Name: an efficient method for selective desalination of radioactive iodine anions by using gold nanoparticles-embedded membrane filter
Uploaded: 2018-07-13T14:00:00
Description: Watch this Scientific Journal Video about An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter at JoVE.com

Este trabalho foi apoiado pela bolsa de investigação provenientes da Fundação Nacional de pesquisa da Coreia (Grant number: 2017M2A2A6A01070858).

1. síntese de nanopartículas de ouro citrato-estabilizada
<ol><li>Lave um balão de fundo redondo de dois-pescoço (250 mL) e uma barra de agitação magnética com água régia, uma mistura de ácido clorídrico concentrado e ácido nítrico concentrado na proporção de 3:1 volume. Cuidado: solução de água régia é extremamente corrosiva e pode resultar em explosão ou pele queima se não for tratada com extrema cautela.</li>
	<li>Lavagem do material de vidro com água desionizada para remover o ácido resid...

<ol>
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F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Capture+of+Volatile+Iodine,+a+Gaseous+Fission+Product,+by+Zeolitic+Imidazolate+Framework-8.">Capture of Volatile Iodine, a Gaseous Fission Product, by Zeolitic Imidazolate Framework-8.</a> Journal of the American Chemical Society. 133, 12398-12401 (2011).</li><li>Zhang, Z. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+new+type+of+polyhedron-based+metal-organic+frameworks+with+interpenetrating+cationic+and+anionic+nets+demonstrating+ion+exchange,+adsorption+and+luminescent+properties.">A new type of polyhedron-based metal-organic frameworks with interpenetrating cationic and anionic nets demonstrating ion exchange, adsorption and luminescent properties.</a> Chemical Communications. 47, 6425-6427 (2011).</li><li>Li, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Highly+efficient+I2+capture+by+simple+and+low-cost+deep+eutectic+solvents.">Highly efficient I2 capture by simple and low-cost deep eutectic solvents.</a> Green Chemistry. 18, 2522-2527 (2016).</li><li>Yan, C., Mu, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Investigation+of+ionic+liquids+for+efficient+removal+and+reliable+storage+of+radioactive+iodine:+a+halogen-bonding+case.">Investigation of ionic liquids for efficient removal and reliable storage of radioactive iodine: a halogen-bonding case.</a> Physical Chemistry Chemical Physics. 16, 5071-5075 (2014).</li><li>Choi, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+bioremediation+of+radioactive+iodine+using+biogenic+gold+nanomaterial-containing+radiation-resistant+bacterium,+Deinococcus+radiodurans+R1.">Efficient bioremediation of radioactive iodine using biogenic gold nanomaterial-containing radiation-resistant bacterium, Deinococcus radiodurans R1.</a> Chemical Communications. 53, 3937-3940 (2017).</li><li>Kim, Y. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tumor+targeting+and+imaging+using+cyclic+RGD-PEGylated+gold+nanoparticle+probes+with+directly+conjugated+iodine-125.">Tumor targeting and imaging using cyclic RGD-PEGylated gold nanoparticle probes with directly conjugated iodine-125.</a> Small. 7, 2052-2060 (2011).</li><li>Choi, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gold-Nanoparticle-Immobilized+Desalting+Columns+for+Highly+Efficient+and+Specific+Removal+of+Radioactive+Iodine+in+Aqueous+Media.">Gold-Nanoparticle-Immobilized Desalting Columns for Highly Efficient and Specific Removal of Radioactive Iodine in Aqueous Media.</a> ACS Applied Materials &amp; Interfaces. 8, 29227-29231 (2016).</li><li>Mushtaq, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+and+selective+removal+of+radioactive+iodine+anions+using+engineered+nanocomposite+membranes.">Efficient and selective removal of radioactive iodine anions using engineered nanocomposite membranes.</a> Environmental Science: Nano. 4, 2157-2163 (2017).</li><li>Awual, M. R., Ismael, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+gold(III)+detection,+separation+and+recovery+from+urban+mining+waste+using+a+facial+conjugate+adsorbent.">Efficient gold(III) detection, separation and recovery from urban mining waste using a facial conjugate adsorbent.</a> Sensors and Actuators B: Chemical. 196, 457-466 (2014).</li><li>Awual, M. R., Hasan, M. M., Naushad, M., Shiwaku, H., Yaita, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preparation+of+new+class+composite+adsorbent+for+enhanced+palladium(II)+detection+and+recovery.">Preparation of new class composite adsorbent for enhanced palladium(II) detection and recovery.</a> Sensors and Actuators B: Chemical. 209, 790-797 (2015).</li><li>Awual, M. R., Hasan, M. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fine-tuning+mesoporous+adsorbent+for+simultaneous+ultra-trace+palladium(II)+detection,+separation+and+recovery.">Fine-tuning mesoporous adsorbent for simultaneous ultra-trace palladium(II) detection, separation and recovery.</a> Journal of Industrial and Engineering Chemistry. 21, 507-515 (2015).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ring+size+dependent+crown+ether+based+mesoporous+adsorbent+for+high+cesium+adsorption+from+wastewater.">Ring size dependent crown ether based mesoporous adsorbent for high cesium adsorption from wastewater.</a> Chemical Engineering Journal. 303, 539-546 (2016).</li><li>Awual, M. R., Miyazaki, Y., Taguchi, T., Shiwaku, H., Yaita, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Encapsulation+of+cesium+from+contaminated+water+with+highly+selective+facial+organic-inorganic+mesoporous+hybrid+adsorbent.">Encapsulation of cesium from contaminated water with highly selective facial organic-inorganic mesoporous hybrid adsorbent.</a> Chemical Engineering Journal. 291, 128-137 (2016).</li><li>Awual, M. R., Yaita, T., Taguchi, T., Shiwaku, H., Suzuki, S., Okamoto, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Selective+cesium+removal+from+radioactive+liquid+waste+by+crown+ether+immobilized+new+class+conjugate+adsorbent.">Selective cesium removal from radioactive liquid waste by crown ether immobilized new class conjugate adsorbent.</a> Journal of Hazardous Materials. 278, 227-235 (2014).</li><li>Awual, M. R., Suzuki, S., Taguchi, T., Shiwaku, H., Okamoto, Y., Yaita, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radioactive+cesium+removal+from+nuclear+wastewater+by+novel+inorganic+and+conjugate+adsorbents.">Radioactive cesium removal from nuclear wastewater by novel inorganic and conjugate adsorbents.</a> Chemical Engineering Journal. 242, 127-135 (2014).</li><li>Awual, M. R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+detection+and+adsorption+of+cadmium+(II)+ions+using+innovative+nano-composite+materials.">Efficient detection and adsorption of cadmium (II) ions using innovative nano-composite materials.</a> Chemical Engineering Journal. 343, 118-127 (2018).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+type+mesoporous+conjugate+material+for+selective+optical+copper(II)+ions+monitoring+&amp;+removal+from+polluted+waters.">New type mesoporous conjugate material for selective optical copper(II) ions monitoring &amp; removal from polluted waters.</a> Chemical Engineering Journal. 307, 85-94 (2017).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Novel+nanocomposite+materials+for+efficient+and+selective+mercury+ions+capturing+from+wastewater.">Novel nanocomposite materials for efficient and selective mercury ions capturing from wastewater.</a> Chemical Engineering Journal. 307, 456-465 (2017).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Solid+phase+sensitive+palladium(II)+ions+detection+and+recovery+using+ligand+based+efficient+conjugate+nanomaterials.">Solid phase sensitive palladium(II) ions detection and recovery using ligand based efficient conjugate nanomaterials.</a> Chemical Engineering Journal. 300, 264-272 (2016).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Assessing+of+lead(III)+capturing+from+contaminated+wastewater+using+ligand+doped+conjugate+adsorbent.">Assessing of lead(III) capturing from contaminated wastewater using ligand doped conjugate adsorbent.</a> Chemical Engineering Journal. 289, 65-73 (2016).</li><li>Awual, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+novel+facial+composite+adsorbent+for+enhanced+copper+(II)+detection+and+removal+from+wastewater.">A novel facial composite adsorbent for enhanced copper (II) detection and removal from wastewater.</a> Chemical Engineering Journal. 266, 368-375 (2015).</li><li>Kaushik, M., Moores, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Review:+nanocelluloses+as+versatile+supports+for+metal+nanoparticles+and+their+applications+in+catalysis.">Review: nanocelluloses as versatile supports for metal nanoparticles and their applications in catalysis.</a> Green Chemistry. 18, 622-637 (2016).</li><li>Jang, H., Kim, Y. K., Ryoo, S. R., Kim, M. H., Min, D. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Facile+synthesis+of+robust+and+biocompatible+gold+nanoparticles.">Facile synthesis of robust and biocompatible gold nanoparticles.</a> Chemical Communication. 46, 583-585 (2010).</li><li>Bolisetty, S., Mezzenga, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Amyloid-carbon+hybrid+membranes+for+universal+water+purification.">Amyloid-carbon hybrid membranes for universal water purification.</a> Nature Nanotechnology. 11, 365-371 (2016).</li><li>Zakrzewska-Trznadel, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Advances+in+membrane+technologies+for+the+treatment+of+liquid+radioactive+waste.">Advances in membrane technologies for the treatment of liquid radioactive waste.</a> Desalination. 321, 119-130 (2013).</li><li>Rana, D., Matsuura, T., Kassim, M. A., Ismail, A. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radioactive+decontamination+of+water+by+membrane+processes+-+A+review.">Radioactive decontamination of water by membrane processes - A review.</a> Desalination. 321, 77-92 (2013).</li></ol>

Em anos recentes, vários nanomateriais engenharia e membranas foram desenvolvidas para remover metais radioactivos perigosos e metais pesados na água com base na sua funcionalidade específica na adsorção técnicas25,26, 27 , 28 , 29 , 30 , 31 , 32 <sup...

Há várias décadas, enorme quantidade de resíduos radioactivos líquidos foi gerada por reactores nucleares, instalações de pesquisa e instituições médicas. Esses poluentes foram frequentemente uma ameaça palpável para o meio ambiente e saúde humana1,2,3. Especialmente, o iodo radioativo é reconhecido como um dos elementos mais perigosos devido a acidentes de usina nuclear. Por exemplo, um ambiente um relatório sobre o Fukushima e Chernobyl reator nuclear demonstrou que a quantidade de lançado iodines radioativos incluindo 131eu (t1/2 = 8,02 dias) e 129eu (t1/2 = 15,7 milhões de anos) para o ambiente era maior do que aqueles de outros radionuclídeos4,5. Em particular, a exposição destes radioisótopos resultou em alta absorção e enriquecimento na tiroide humana6. Além disso, iodines radioativos liberados podem causar grave contaminação do solo, água do mar e das águas subterrâneas devido à sua alta solubilidade em água. Portanto, muitos processos de remediação usando vários Adsorventes inorgânicos e orgânicos têm sido investigados para capturar iodines radioativos em resíduos aquosos7,8,9,10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20. apesar de extensos esforços têm se dedicado ao desenvolvimento de sistemas avançados de adsorvente, o estabelecimento de um método de descontaminação mostrando performances satisfatórias sob condição de em fluxo contínua era muito limitado. Recentemente, nós relatamos um processo de dessalinização novela mostrando a eficiência de remoção boa, íon-seletividade, sustentabilidade e reutilização usando materiais de compósito nano híbrido de nanopartículas de ouro (AuNPs)21,22 , 23. entre eles, membranas de ouro embutido de nanopartículas de acetato de celulose (Au-CAM) facilitaram a dessalinização altamente eficiente de íons iodeto sob um sistema de fluxo contínuo em comparação com aqueles de materiais adsorventes existentes. Além disso, todo o processo poderia ser terminado em um curto período de tempo, que foi outra vantagem para o tratamento de resíduos nucleares gerados a partir de pós-uso em aplicações médicas e industriais. O objetivo geral do presente manuscrito é fornecer um protocolo passo a passo para a preparação de Au-CAM24. Também demonstramos que um processo de filtração rápida e conveniente para íon-seletivo captura de iodo radioativo usando as membranas compostas projetadas. O protocolo detalhado neste relatório oferecerá uma aplicação útil dos nanomateriais no campo de pesquisa de ciências ambientais.

<table border="0" cellpadding="0" cellspacing="0" style="width:813px;" width="813">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:351px;">Hydrochloric acid</td>
			<td style="width:177px;">DUKSAN</td>
			<td style="width:119px;">1129</td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Nitric acid&#160;</td>
			<td>JUNSEI</td>
			<td style="width:119px;">37335-1250</td>
			<td></td>
		</tr>
		<tr height="25">
			<td height="25" style="height:25px;">Chloroautic chloride trihydrate (HAuCl4&#183;3H2O)</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">254169</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sodium citrate tribasic dihydrate</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">71402</td>
			<td></td>
		</tr>
		<tr height="24">
			<td height="24" style="height:24px;">[125I]NaI&#160;</td>
			<td>Perkin-Elmer</td>
			<td style="width:119px;">NEZ033A010MC</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sodium chloride</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">S9888</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sodium iodide</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">383112</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sodium hydroxide</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">S5881</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Lithium L-lactate</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">L2250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Citric acid</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">C1909</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:351px;">Sodium hydrogen carbonate</td>
			<td>JUNSEI</td>
			<td style="width:119px;">43305-1250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:351px;">Urea</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">U1250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Calcium chloride</td>
			<td>JUNSEI</td>
			<td style="width:119px;">18230-0301</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Magnesium sulfate</td>
			<td>SAMCHUN</td>
			<td style="width:119px;">M0146</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Potassium dihydrogen phosphate</td>
			<td>JUNSEI</td>
			<td style="width:119px;">84185A1250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Dipotassium hydrogen phosphate</td>
			<td>JUNSEI</td>
			<td style="width:119px;">84120-1250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sodium sulfate</td>
			<td>JUNSEI</td>
			<td style="width:119px;">83260-1250</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Ammonium chloride</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">A9434</td>
			<td>Synthetic urine</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Sea water</td>
			<td>Sigma Aldrich</td>
			<td style="width:119px;">S9148</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">1x PBS</td>
			<td>Thermo</td>
			<td style="width:119px;">SH30256.01</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cellulose acetate membranes (pore size: 0.20 &#956;m, diameter: 25 mm)</td>
			<td>Advantec MFS</td>
			<td style="width:119px;">25CS045AS</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cellulose acetate membranes (pore size: 0.20 &#956;m, diameter: 47 mm)</td>
			<td>Advantec MFS</td>
			<td style="width:119px;">C045A047A</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">47 mm Glass Microanalysis Holders</td>
			<td>Advantec MFS</td>
			<td style="width:119px;">KG47(311400)</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Petri dish (50 mm diameter &#180; 15 mm height)</td>
			<td>SPL</td>
			<td style="width:119px;">10050</td>
			<td></td>
		</tr>
		<tr height="24">
			<td height="24" style="height:24px;">Gamma counter</td>
			<td>Perkin-Elmer</td>
			<td>2480 WIZARD2</td>
			<td>Model number</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">UV-vis spectrophotometer</td>
			<td>Thermo</td>
			<td style="width:119px;">GENESYS 10</td>
			<td>Model number</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Transmission electron microscopy</td>
			<td style="width:177px;">Hitachi</td>
			<td style="width:119px;">H-7650</td>
			<td>Model number</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:351px;">Field Emission Scanning electron microscope</td>
			<td style="width:177px;">FEI</td>
			<td style="width:119px;">Verios 460L</td>
			<td>Model number</td>
		</tr>
	</tbody>
</table>

an efficient method for selective desalination of radioactive iodine anions by using gold nanoparticles-embedded membrane filter

Aqui, demonstramos um protocolo de detalhe para a preparação de membranas compostas incorporado nanomateriais e sua aplicação para a remoção eficiente e íon seletivo de iodines radioativos. Por meio de nanopartículas de ouro citrato-estabilizado (diâmetro médio: 13 nm) e membranas de acetato de celulose, ouro, membranas de acetato de celulose de nanopartículas-incorporado (Au-CAM) facilmente tem sido fabricadas. Os nano-adsorventes na Au-CAM foram altamente estáveis na presença de alta concentração de sais inorgânicos e moléculas orgânicas. Íons em soluções aquosas de iodeto rapidamente poderiam ser capturados por esta membrana projetada. Através de um processo de filtração, usando uma unidade de filtro contendo Au-CAM, eficiência de remoção excelente (> 99%), bem como íon seletivo resultado de dessalinização foi alcançado em um curto espaço de tempo. Além disso, Au-CAM prevista uma boa reutilização sem diminuição significativa de suas performances. Estes resultados sugeriram que a tecnologia presente usando a membrana híbrido projetada será um processo promissor para a descontaminação em grande escala de iodo radioativo de resíduos líquidos.

Temos demonstrado métodos simples para a fabricação de Au-CAM utilizando citrato-estabilizado AuNPs e acetato de celulose da membrana (Figura 1um). A superfície do Au-CAM foi observada por SEM que mostrou que os nanomateriais foram incorporados estàvel nas nanofibras de celulose (Figura 2). As nanopartículas encarceradas na membrana foram sustentadas estàvel e não foram liberadas pela membrana por lavagem...

Watch this Scientific Journal Video about An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter at JoVE.com

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Um método eficiente para a rápida e íon seletivo dessalinização de iodo radioativo em várias soluções aquosas é descrito usando filtros de membrana de acetato de celulose imobilizada de nanopartículas de ouro.

Um método eficiente para dessalinização seletiva de iodo radioativo ânions usando filtro de membrana incorporado de nanopartículas de ouro

Here, we demonstrate a detail protocol for the preparation of nanomaterials-embedded composite membranes and its application to the efficient and ...

Research

JoVE Journal

Engineering

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Seletiva Área Modificação de Superfície Wettability Silicon por Pulsed Laser irradiação UV em meio líquido

The wettability of silicon (Si) is one of the important parameters in the technology of surface functionalization of this material and fabrication of ...

Engenharia

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detecção e recuperação de paládio, do ouro e cobalto Metais da Mina Urbana Usando novos sensores / adsorventes Designados com poros em nanoescala em forma de roda de carroça

Developing low-cost, efficient processes for recovering and recycling palladium, gold and cobalt metals from urban mine remains a significant challenge in ...

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Híbrido multifuncional Fe<sub&gt; 2</sub&gt; ó<sub&gt; 3</sub&gt; -au Nanopartículas para Aquecimento plasmonic Eficiente

One of the most widely used methods for manufacturing colloidal gold nanospherical particles involves the reduction of chloroauric acid (HAuCl4) to ...

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalente Cation Doping de CH<sub&gt; 3</sub&gt; NH<sub&gt; 3</sub&gt; PBI<sub&gt; 3</sub&gt; For eficientes células solares Perovskita

Here, we demonstrate the incorporation of monovalent cation additives into CH3NH3PbI3 perovskite in order to adjust the optical, excitonic, and electrical ...

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Localização de Defeitos Subsuperficiais por Aquecimento Estruturado usando a Termografia Fototérmica Projetada a Laser

The presented method is used to locate subsurface defects oriented perpendicularly to the surface. To achieve this, we create destructively interfering ...

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

Fabricação de matrizes de periódicos Nanocup ouro usando litografia coloidal

Within recent years, the field of plasmonics has exploded as researchers have demonstrated exciting applications related to chemical and optical sensing ...

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Projeto e metodologia de caracterização para filtros de MEMS sintonizável eficiente gama

Here, we demonstrate the advantages of the laser Doppler vibrometer (LDV) over conventional techniques (the network analyzer), as well as the techniques ...

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Controlável nucleação de cavitação de nanopartículas de ouro plasmônico para reforçar a alta intensidade focada aplicações de ultra-som

In this study, plasmonic gold nanoparticles were simultaneously exposed to pulsed near-infrared laser light and high intensity focused ultrasound (HIFU) ...

Using Flexible Gold-Titanium Reaction Cells to Simulate Pressure-Dependent Microbial Activity in the Context of Subsurface Biomining

Usando células de reação de ouro-titânio flexíveis para simular atividade microbiana dependente de pressão no contexto da Biomineração subsuperficial

Laboratory studies investigating subsurface microbial processes, such as metal leaching in deep ore deposits (biomining), share common and challenging ...

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Renderização SiO2/Si Surfaces Omniphobic esculpindo microtexturas de armadilha de gás compreendendo reentrant e duplamente reentrant cavidades ou pilares