Name: dispersion of nanomaterials in aqueous media: towards protocol optimization
Uploaded: 2017-12-25T13:00:00
Duration: 9 min 35 s
Description: Watch this Scientific Journal Video about Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization at JoVE.com

इन परिणामों के लिए अग्रणी अनुसंधान NE/J010783/1 से धन प्राप्त हुआ है । परियोजना NanoValid अनुसंधान, प्रौद्योगिकीय विकास के लिए यूरोपीय संघ के सातवें कार्यक्रम से धन प्राप्त किया है, और प्रदर्शन अनुदान समझौते No. २६३१४७ के तहत ।

<ol>
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K., Neigh, A. M., Spencer, M. T., Guyen, O. T. N., Oldenburg, S. 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F., Wilhelm, A. M., Berlan, J., Delmas, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Power+measurement+in+sonochemistry.">Power measurement in sonochemistry.</a> Ultrason Sonochem. 2 (1), S43-S47 (1995).</li><li>Kimura, T., 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=Standardization+of+ultrasonic+power+for+sonochemical+reaction.">Standardization of ultrasonic power for sonochemical reaction.</a> Ultrason Sonochem. 3 (3), S157-S161 (1996).</li><li>Raso, J., Ma&#241;as, P., Pag&#225;n, R., Sala, F. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Influence+of+different+factors+on+the+output+power+transferred+into+medium+by+ultrasound.">Influence of different factors on the output power transferred into medium by ultrasound.</a> Ultrason Sonochem. 5 (4), 157-162 (1999).</li><li>Matarredona, O., 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=Dispersion+of+Single-Walled+Carbon+Nanotubes+in+Aqueous+Solutions+of+the+Anionic+Surfactant+NaDDBS.">Dispersion of Single-Walled Carbon Nanotubes in Aqueous Solutions of the Anionic Surfactant NaDDBS.</a> J Phys Chem B. 107 (48), 13357-13367 (2003).</li><li>Jiang, L., Gao, L., Sun, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Production+of+aqueous+colloidal+dispersions+of+carbon+nanotubes.">Production of aqueous colloidal dispersions of carbon nanotubes.</a> J Colloid Interface Sci. 260 (1), 89-94 (2003).</li><li>Jensen, K. 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लेखकों के पास वित्तीय हित की कोई होड़ नहीं है । इक और EVJ ने संयुक्त रूप से इक डिजाइन के साथ अध्ययन की कल्पना की, प्रयोगों का प्रदर्शन किया, आंकड़ों का विश्लेषण, और पांडुलिपि तैयार की । LJE और IR उनि इमेजिंग बाहर किया । एसए, एमएलएम, और MC सिरैमिक की आपूर्ति की, और सह के बाकी लेखकों पर चर्चा की और सभी चरणों और आरटी पर पांडुलिपि के संपादन की दिशा में योगदान पर टिप्पणी की ।

<table border="0" cellpadding="0" cellspacing="0" width="906">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:203px;">Cerium oxide nanopowder</td>
			<td style="width:305px;">Sigma-Aldrich</td>
			<td style="width:119px;">544841</td>
			<td style="width:280px;">&#60;25&#160;nm particle size (BET)</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;">Zinc oxide</td>
			<td style="width:305px;">European Commission&#39;s Joint Research Centre (JRC)</td>
			<td style="width:119px;">NM110</td>
			<td>hydrophylic</td>
		</tr>
		<tr height="84">
			<td height="84" style="height:84px;">Zinc oxide</td>
			<td style="width:305px;">European Commission&#39;s Joint Research Centre (JRC)</td>
			<td style="width:119px;">NM111</td>
			<td>hydrophobic</td>
		</tr>
		<tr height="85">
			<td height="85" style="height:85px;width:203px;">Multi walled carbon nanotubes</td>
			<td style="width:305px;">NanoMile project (Large Collaborative Project under the European Commission&#39;s 7th Framework Programme)</td>
			<td style="width:119px;">A32 (MWCNT1)</td>
			<td>3.0&#177;1.8 &#181;m long, O/C ratio of 4.5%</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:203px;">Multi walledcarbon nanotubes</td>
			<td style="width:305px;">NanoMile project</td>
			<td style="width:119px;">A106 (MWCNT2)</td>
			<td>3.3&#177;2.4 &#181;m long, O/C ratio of 7%</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:203px;">Silver dispersion</td>
			<td style="width:305px;">Sigma-Aldrich</td>
			<td style="width:119px;">730785</td>
			<td>10&#160;nm particle size (TEM), 0.02&#160;mg/mL</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:203px;">Zetasizer nano</td>
			<td style="width:305px;">Malvern Instruments</td>
			<td style="width:119px;"></td>
			<td>Particle size and zeta-potential measurements&#160;</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Disc Centrifuge</td>
			<td>CPS instruments Inc.</td>
			<td>Model DC 24000</td>
			<td>Particle size distribution by centrifugal sedimentation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Transmission electron microscope</td>
			<td style="width:305px;">JEOL USA</td>
			<td style="width:119px;">Jeol 1200EX TEM</td>
			<td>Bright field images, particle size, shape, agglomeration</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Ultrasonic probe fitted with a vial tweeter</td>
			<td style="width:305px;">Hielscher</td>
			<td>UIS250V</td>
			<td>Sonicator</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:203px;">Ultrasonic bath</td>
			<td>Branson&#160;</td>
			<td style="width:119px;">Model 1510</td>
			<td>Sonicator</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:203px;">Eppendorf vials</td>
			<td style="width:305px;">Eppendorf</td>
			<td style="width:119px;">2236411-1</td>
			<td>1.5ml capacity</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:203px;">UV-vis spectrophotometer</td>
			<td style="width:305px;">Jenson flight deck</td>
			<td style="width:119px;">Model 6800</td>
			<td>SPR peaks, suspension stability</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:203px;">Disposable folded capillary cell</td>
			<td style="width:305px;">Malvern Instruments</td>
			<td>DTS 1070</td>
			<td>for the measurement of elecr</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;">Zeta- potential standard</td>
			<td style="width:305px;">Malvern Instruments</td>
			<td style="width:119px;">DTS 1235</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:203px;">Quartz cuvette</td>
			<td style="width:305px;">Jasco</td>
			<td>1103-0042</td>
			<td>Rectangular quartz cell 10 x 100 
			Spectrosil Quartz with lid 190 -2700 nm</td>
		</tr>
	</tbody>
</table>

dispersion of nanomaterials in aqueous media: towards protocol optimization

sonication प्रक्रिया सामांयतः de-agglomerating के लिए प्रयोग किया जाता है और जलीय आधारित मीडिया में मैटीरियल्स dispersing, एकरूपता और निलंबन की स्थिरता में सुधार करने के लिए आवश्यक है । इस अध्ययन में, एक व्यवस्थित कदम-वार दृष्टिकोण एक स्थिर फैलाव को प्राप्त करने के लिए इष्टतम sonication शर्तों की पहचान करने के लिए किया जाता है । इस दृष्टिकोण को अपनाया गया है और कई मैटीरियल्स (सीरियम ऑक्साइड, जस्ता ऑक्साइड, और कार्बन नैनोट्यूब) के लिए उपयुक्त होना दिखाया (DI) पानी में फैलाया । हालांकि, या तो nanomaterial प्रकार या फैलाने के माध्यम में किसी भी परिवर्तन के साथ, इस प्रक्रिया के दौरान जैसे sonication समय, बिजली, और sonicator प्रकार के रूप में के रूप में अच्छी तरह से तापमान वृद्धि के रूप में विभिंन कारकों का समायोजन करके बुनियादी प्रोटोकॉल के अनुकूलन की जरूरत है । दृष्टिकोण विस्तार में फैलाव की प्रक्रिया रिकॉर्ड । यह समय बिंदुओं की पहचान करने के लिए आवश्यक है के रूप में अच्छी तरह के रूप में sonication प्रक्रिया में जो वहां अवांछनीय परिवर्तन, इस प्रकार सतह गुणों को प्रभावित कण सतह को नुकसान के रूप में हो सकता है के दौरान उपर्युक्त शर्तों अंय । हमारा लक्ष्य एक संगत दृष्टिकोण है कि अंतिम, उत्पादित फैलाव की गुणवत्ता को नियंत्रित कर सकते है की पेशकश है । इस तरह के एक दिशानिर्देश विशेष रूप से nanotoxicology के क्षेत्र में, nanoscience समुदाय में फैलाव गुणवत्ता पुनरावर्तन सुनिश्चित करने में महत्वपूर्ण भूमिका निभाई है ।

Watch this Scientific Journal Video about Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization at JoVE.com

Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

यहाँ, हम वास्तविक समय लक्षण वर्णन के साथ जलीय मीडिया में मैटीरियल्स के फैलाव के लिए एक कदम वार प्रोटोकॉल वर्तमान इष्टतम sonication शर्तों, तीव्रता, और सुधार स्थिरता और nanoparticle की एकरूपता के लिए अवधि की पहचान करने के लिए नमूना अखंडता को प्रभावित किए बिना फैलाव ।

मैटीरियल्स के जलीय मीडिया में फैलाव: प्रोटोकॉल अनुकूलन की ओर

The sonication process is commonly used for de-agglomerating and dispersing nanomaterials in aqueous based media, necessary to improve homogeneity and ...

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