Name: in situ synthesis of gold nanoparticles without aggregation in the interlayer space of layered titanate transparent films
Uploaded: 2017-01-17T14:00:00
Description: Watch this Scientific Journal Video about In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films at JoVE.com

This work was partly supported by Nippon Sheet Glass Foundation for Materials Science and Engineering and JSPS KAKENHI (Grant-in-Aid for Challenging Exploratory Research, #50362281).

Forsigtig: Udvis altid forsigtighed når du arbejder med kemikalier og løsninger. Følg de relevante sikkerhedsregler og handsker, briller og en lab coat på alle tidspunkter. Vær opmærksom på at nanomaterialer kan have yderligere farer i forhold til deres bulk-modstykke. 1. Udarbejdelse af Regents <ol><li> Forbered methylviologen vandig opløsning ved opløsning af 0,0012 g 1,1&#39;-dimethyl-4,4&#39;-bipyridinium dichlorid (methylviologen; MV 2+) i 20 ml vand til opnåelse af 0,2 mM MV 2+....

Dette håndskrift giver en detaljeret protokol for in situ syntese af guld nanopartikler (AuNPs) inden mellemlaget rum TNS film. Dette er den første rapport af in situ syntese af AuNPs inden mellemlaget rum TNS. Desuden fandt vi, at to-AET + fungerer som en effektiv beskyttende reagens til AuNPs inden mellemlaget af TNS. Disse metoder hybridiseret AuNPs og TNS transparente film. TNS film med god optisk transparens 21 blev syntetiseret gennem sintring processer (s-TNS film), som p...

Forskellige ædle metal nanopartikler (MNP&#39;er) udviser karakteristiske farver eller toner på grund af deres lokaliserede overfladeplasmonresonans (LSPR) egenskaber; således kan MNP&#39;er anvendes i forskellige optiske og / eller fotokemiske anvendelser 1-4. For nylig, kombinationer af metal oxide semiconductor (MOS) fotokatalysatorer, såsom titanium oxid (TiO2) og MNP&#39;er, er blevet grundigt undersøgt som nye typer af fotokatalysatorer 5-14. Men i mange tilfælde, meget små mængder MNP&#39;er eksistere på MOS overflade, fordi de fleste MOS partikler har relativt lave overfladearealer. På den anden side, lagdelte metaloxid halvledere (LMOSs) udviser fotokatalytiske egenskaber og har et stort overfladeareal, typisk flere hundrede kvadratmeter pr g af en LMO 15-17. Endvidere er der forskellige LMOSs har indlejringsforbindelser egenskaber (dvs. kan forskellige kemiske arter rummes inden deres udvidelige og store mellemlag mellemrum) 15-20. Således med en kombination af MNP&#39;er og LMOSs, forventes det, at relativt store mængder af MNP&#39;er hybridiseres med halvleder fotokatalysatorer. Vi har rapporteret det første in situ syntese af kobber nanopartikler (CuNPs) 21 inden mellemlaget plads LMO (titaniumdioxid nanosheet; TNS 16-30) gennemsigtige film gennem meget enkle trin. Imidlertid er endnu ikke blevet rapporteret detaljerne i de syntetiske procedurer og karakteriseringen af ​​de andre ædle MNP&#39;er og TNS hybrider. Endvidere blev CuNPs inden for TNS lagene let oxideret og affarvet under omgivende forhold 21. Som sådan har vi fokuseret på guld nanopartikler (AuNPs), fordi AuNPs vidt omfang anvendes til forskellige optiske, fotokemisk, og katalytiske applikationer, og det forventes, at de vil være relativt stabil over for oxidation 3-5,7,8,10-14 , 28,31,32. Her rapporterer vi syntesen af ​​AuNPs inden mellemlaget rum TNS og show that 2-ammoniumethanethiol (2-AET +; figur 1 indsat) fungerer effektivt som et beskyttende reagens til AuNPs inden mellemlaget af TNS.

<table border="0" cellpadding="0" cellspacing="0" width="979">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="22">
			<td height="22" style="height:22px;width:295px;">Methyl viologen dichloride</td>
			<td style="width:173px;">Aldrich Chemical&#160; Co., Inc.</td>
			<td style="width:124px;">1910-42-5</td>
			<td style="width:388px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Tetrabutylammonium hydroxide</td>
			<td>TCI</td>
			<td>T1685</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">cesium carbonate</td>
			<td>Kanto Chemical Co., Inc.</td>
			<td>07184-33</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">anatase titanium dixoide</td>
			<td>Ishihara Sangyo Ltd.</td>
			<td>ST-01</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">hydrochloric acid</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>20010-0350</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">sodium hydroxide</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>195-13775</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Tetrachloroauric(III) acid trihydrate</td>
			<td>Kanto Chemical Co., Inc.</td>
			<td>17044-60</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">sodium tetrahydroborate</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>39245-1210</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">2-ammoniumethanethiol hydrochloride</td>
			<td>TCI</td>
			<td>A0296</td>
			<td></td>
		</tr>
		<tr height="24">
			<td height="24" style="height:24px;">Ultrapure water (0.056 &#181;S/cm)</td>
			<td></td>
			<td></td>
			<td>Milli-Q water purification system (Direct-Q&#174; 3UV, Millipore)</td>
		</tr>
		<tr height="22">
			<td>Microscope slide (Thickness : 1.0&#8764;1.2 mm)</td>
			<td>Matsunami glass Co., Ltd.</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;"></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

in situ synthesis of gold nanoparticles without aggregation in the interlayer space of layered titanate transparent films

Combinations of metal oxide semiconductors and gold nanoparticles (AuNPs) have been investigated as new types of materials. The in situ synthesis of AuNPs within the interlayer space of semiconducting layered titania nanosheet (TNS) films was investigated here. Two types of intermediate films (i.e., TNS films containing methyl viologen (TNS/MV2+) and 2-ammoniumethanethiol (TNS/2-AET+)) were prepared. The two intermediate films were soaked in an aqueous tetrachloroauric(III) acid (HAuCl4) solution, whereby considerable amounts of Au(III) species were accommodated within the interlayer spaces of the TNS films. The two types of obtained films were then soaked in an aqueous sodium tetrahydroborate (NaBH4) solution, whereupon the color of the films immediately changed from colorless to purple, suggesting the formation of AuNPs within the TNS interlayer. When only TNS/MV2+ was used as the intermediate film, the color of the film gradually changed from metallic purple to dusty purple within 30 min, suggesting that aggregation of AuNPs had occurred. In contrast, this color change was suppressed by using the TNS/2-AET+ intermediate film, and the AuNPs were stabilized for over 4 months, as evidenced by the characteristic extinction (absorption and scattering) band from the AuNPs.

To typer af precursor-film blev anvendt i denne undersøgelse (dvs. med og uden det beskyttende reagens (2-AET +) inden for mellemlag af TNS). I fravær af 2-AET +, 1,1&#39;-dimethyl-4,4&#39;-bipyridinium dichlorid (methylviologen; MV 2+) blev anvendt som en ekspander af mellemlægget plads, fordi MV 2+ holdige LMOSs har været ofte anvendes som mellemprodukter i gæst udveksling fremgangsmåde til fremstilling LMOSs 16,17,21,33-3...

Watch this Scientific Journal Video about In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films at JoVE.com

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

Her præsenterer vi en protokol for in situ syntese af guld nanopartikler (AuNPs) inden mellemlaget rum af lagdelte titanat film uden sammenlægning af AuNPs. Ingen spektral ændring blev observeret selv efter 4 måneder. Den syntetiserede materiale er forventet applikationer i katalyse, foto-katalyse, og udvikling af omkostningseffektive plasmoniske enheder.

In Situ Syntese af Gold Nanopartikler uden Sammenlægning i mellemlaget Space of Layered titanat Gennemsigtige Films

Combinations of metal oxide semiconductors and gold nanoparticles (AuNPs) have been investigated as new types of materials. The in situ synthesis of AuNPs ...

Research

JoVE Journal

Engineering

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers

Syntese og Funktionalisering af Nitrogen-doped kulstof nanorør Cups med guld nanopartikler som korkpropper

Nitrogen-doped carbon  nanotubes consist of many cup-shaped graphitic compartments termed as  nitrogen-doped carbon nanotube cups (NCNCs).  These ...

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

Detektion og Inddrivelse af Palladium, Guld og kobolt Metaller fra Urban Mine Brug Nye sensorer / Adsorbenter Udpegede med Nanoscale Wagon-hjul-formede porer

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

Fabrication and Characterization of Superconducting Resonators

Fremstilling og karakterisering af superledende Resonatorer

Superconducting microwave resonators are of interest for a wide range of applications, including for their use as microwave kinetic inductance detectors ...

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

Elektrospraymassespek Deposition af ensartet tykkelse Ge<sub&gt; 23</sub&gt; Sb<sub&gt; 7</sub&gt; S<sub&gt; 70</sub&gt; Og As<sub&gt; 40</sub&gt; S<sub&gt; 60</sub&gt; chalcogenid Glas Films

Solution-based electrospray film deposition, which is compatible with continuous, roll-to-roll processing, is applied to chalcogenide glasses. Two ...

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Spark Plasma Sintring Apparater Anvendes til dannelse af strontiumtitanat Bicrystals

A spark plasma sintering apparatus was used as a novel method for diffusion bonding of two single crystals of strontium titanate to form bicrystals with ...

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Fabrikation af ultra-tynde farve film med meget absorberende medier bruger skråt Deposition

Ultra-thin film structures have been studied extensively for use as optical coatings, but performance and fabrication challenges remain.&#160; We present ...

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Metoder til Ex Situ og In Situ undersøgelser af strukturelle forandringer: sagen om krystallisering af metalliske briller

We demonstrate the use of two nuclear-based analytical methods that can follow the modifications of microstructural arrangement of iron-based metallic ...

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

Styrbar Nukleering af kavitation fra Plasmonic guld nanopartikler til forbedring af høj intensitet fokuseret ultralyd applikationer

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

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7&#8722;&#948;/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7ÃƒÆ’Ã‚Â¢Ãƒâ€¹Ã¢â‚¬Â 'ÃƒÆ’Ã…Â½Ãƒâ€šÃ‚Â´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Radio Frequency Magnetron Sputtering af GdBa2Cu3O7−δ/ La0,67Sr0,33MnO3 kvasi tolagede film på SrTiO3 (STO) Single-krystal substrater

Here, we demonstrate a method of coating ferromagnetic La0.67Sr0.33MnO3 (LSMO) nanoparticles on (001) SrTiO3 (STO) single-crystal substrates by radio ...

Large Area Substrate-Based Nanofabrication of Controllable and Customizable Gold Nanoparticles Via Capped Dewetting

Stort område substrat-baseret Nanofabrication af kontrollerbar og kan tilpasses guld nanopartikler Via reducerede Dewetting

Recent scientific advances in the utilization of metallic nanoparticle for enhanced energy conversion efficiency, improved optical device performance, and ...