Name: synthesis of platinum-nickel nanowires and optimization for oxygen reduction performance
Uploaded: 2018-04-27T12:30:00
Description: Watch this Scientific Journal Video about Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance at JoVE.com

Mali destek ABD Enerji Bakanlığı, Office enerji verimliliği ve yenilenebilir enerji tarafından sözleşme numarası DE-AC36-08GO28308 altında NREL için sağlanan.

1. Pt-Ni Nanowires sentezi
<ol><li>Yer değiştirme işlemine başlamak için su nikel nanowire şablonunda askıya alma ve 90 ° c ısı<ol>
<li>40 mg eklemek, piyasada bulunan, nanowires 20 ml deiyonize su 50 mL santrifüj tüpü nikel. 5 min için solüsyon içeren temizleyicide. Not: Yaklaşık 150-250 nm çapı ve uzunluğu 100-200 µm nanowires vardır.</li>
		<li>Askıya alınmış nanowires 250 mL cam alt şişesi yuvarlak transfer ve 60 mL deiyonize su ekleyin. Şişeye bir mineral yağ banyosunda 90 ° c ?...

<ol>
	<li>Bregoli, L. 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+Platinum+Crystallite+Size+on+Electrochemical+Reduction+of+Oxygen+in+Phosphoric-Acid.">Influence of Platinum Crystallite Size on Electrochemical Reduction of Oxygen in Phosphoric-Acid.</a> Electrochim. Acta. 23 (6), 489-492 (1978).</li><li>Debe, M. K., Parsonage, E. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanostructured+electrode+membranes.">Nanostructured electrode membranes.</a> US patent. , (1994).</li><li>Papandrew, A. 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M., 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=Platinum-Coated+Nickel+Nanowires+as+Oxygen-Reducing+Electrocatalysts.">Platinum-Coated Nickel Nanowires as Oxygen-Reducing Electrocatalysts.</a> ACS Cat. 4 (4), 1114-1119 (2014).</li><li>Alia, S. M., 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=Exceptional+Oxygen+Reduction+Reaction+Activity+and+Durability+of+Platinum-Nickel+Nanowires+through+Synthesis+and+Post-Treatment+Optimization.">Exceptional Oxygen Reduction Reaction Activity and Durability of Platinum-Nickel Nanowires through Synthesis and Post-Treatment Optimization.</a> ACS Omega. 2 (4), 1408-1418 (2017).</li><li>Norskov, 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=Origin+of+the+Overpotential+for+Oxygen+Reduction+at+a+Fuel-Cell+Cathode.">Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode.</a> J. Phys. Chem. B. 108 (46), 17886-17892 (2004).</li><li>Sha, Y., Yu, T. H., Merinov, B. V., Shirvanian, P., Goddard, W. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanism+for+Oxygen+Reduction+Reaction+on+Pt3Ni+Alloy+Fuel+Cell+Cathode.">Mechanism for Oxygen Reduction Reaction on Pt3Ni Alloy Fuel Cell Cathode.</a> J. Phys. Chem. C. 116 (40), 21334-21342 (2012).</li><li>Paulus, U. A., 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=Oxygen+reduction+on+high+surface+area+Pt-based+alloy+catalysts+in+comparison+to+well+defined+smooth+bulk+alloy+electrodes.">Oxygen reduction on high surface area Pt-based alloy catalysts in comparison to well defined smooth bulk alloy electrodes.</a> Electrochim. 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Funct. Mater. 20 (21), 3742-3746 (2010).</li><li>Alia, S. M., 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=Platinum+Coated+Copper+Nanowires+and+Platinum+Nanotubes+as+Oxygen+Reduction+Electrocatalysts.">Platinum Coated Copper Nanowires and Platinum Nanotubes as Oxygen Reduction Electrocatalysts.</a> ACS Cat. 3 (3), 358-362 (2013).</li><li>Alia, S. M., 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=Platinum-Coated+Cobalt+Nanowires+as+Oxygen+Reduction+Reaction+Electrocatalysts.">Platinum-Coated Cobalt Nanowires as Oxygen Reduction Reaction Electrocatalysts.</a> ACS Cat. 4 (8), 2680-2686 (2014).</li><li>Alia, S. M., Duong, K., Liu, T., Jensen, K., Yan, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Palladium+and+Gold+Nanotubes+as+Oxygen+Reduction+Reaction+and+Alcohol+Oxidation+Reaction+Catalysts+in+Base.">Palladium and Gold Nanotubes as Oxygen Reduction Reaction and Alcohol Oxidation Reaction Catalysts in Base.</a> ChemSusChem. , (2014).</li><li>Alia, S. M., Pylypenko, S., Neyerlin, K. C., Kocha, S. S., Pivovar, B. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Platinum+Nickel+Nanowires+as+Methanol+Oxidation+Electrocatalysts.">Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts.</a> J. Electrochem. Soc. 162 (12), 1299-1304 (2015).</li><li>Alia, S. 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Bu protokoller yüksek yüzey alanları ve oksijen azaltma tepki8belirli faaliyetleri ile genişletilmiş yüzey electrocatalysts üretmek için kullanılmaktadır. Pt nanostructured Şablonlar yatırma tarafından nanowires düşük koordine siteleri kaçınılması ve üretim belirli faaliyetleri 12 kat daha fazla karbon destekli Pt nano tanecikleri parçacık boyutu etkileri en aza indirmek. Galvanik deplasman sentez yaklaşımı kullanarak da Ni şablon7üzerinde yakla?...

Proton değişim membran yakıt hücreleri tutar ve maliyet yakıt hücresi maliyeti1yarısı için hesap katalizör katmanındaki gerekli platin tarafından kısmen sınırlıdır. Yakıt hücreleri, reaksiyon kinetically hidrojen oksidasyon yavaş olduğundan Nanomalzemeler oksijen azaltma katalizör, genelde geliştirilir. Karbon destekli Pt nano tanecikleri kez oksijen azaltma electrocatalysts nedeniyle onların yüksek yüzey alanı olarak kullanılır; Ancak, onlar özel seçici faaliyet ve dayanıklılık zararları yatkındır.
Genişletilmiş ince filmler potansiyel nano tanecikleri bu sınırlamaların ele alarak avantajlar. Genişletilmiş Pt yüzeyler genellikle belirli faaliyetleri bir büyüklük nano tanecikleri büyük daha az etkin özellikleri ve parçacık boyutu efektleri sınırlayarak üretmek ve2,3 Bisiklete binme potansiyel altında dayanıklı olduğu gösterilmiştir , 4. yüksek toplu etkinlikler genişletilmiş yüzey electrocatalysts elde, iyileştirmeler belirli aktivite öncelikle artar yapılan ve katalizör türü Pt için düşük yüzey alanı (10 m2 g ile sınırlı olmuştur PT -1) 3 , 4 , 5.
Spontan galvanik deplasman korozyona ve electrodeposition6yönlerini birleştirir. İşlemi genellikle iki metallerin standart Redoks potansiyeli tarafından yönetilir ve yeminli ifade genellikle metal katyon şablonu daha fazla reaktif oluşur. Yer değiştirme şablonu Morfoloji maç nanoyapıların üretmek eğilimindedir. Bu teknik için genişletilmiş nanoyapıların uygulayarak, Pt tabanlı katalizörler genişletilmiş ince filmlerin yüksek belirli oksijen azaltma faaliyetlerinin yararlanan bir araya gelebilir. Kısmi deplasman, Pt küçük miktarlarda tevdi ve yüksek yüzey alanları (> 90 m2 gPt-1)7,8malzemelerle üretilmiş.
Bu protokoller Pt ve Ni bölgeleri mix ve oksijen azaltma etkinliğini artırmak için tavlama hidrojen içerir. Çalışmalar bir dizi teorik olarak kurulan mekanizma ve deneysel olarak Pt oksijen azaltma Alaşımlandırma yürürlükte doğruladı. Modelleme ve Pt-OH ve Pt-O bağlama oksijen azaltma aktivite birleştiriliyor kafes sıkıştırma9,-10Pt iyileştirmeler yapılabilir öneririz. Daha küçük geçiş metaller ile PT elementlerinin bu parası onaylamıştır ve Pt-Ni çok sayıda formu polikristalin, yönlü elektrotlar, nano tanecikleri ve taşınımı11,12, de dahil olmak üzere, soruşturma 13,14.
Galvanik deplasman çeşitli gümüş, bakır ve kobalt nanoyapıların15,16,17de dahil olmak üzere diğer şablonlar ile Pt-oksijen azaltma katalizör geliştirme kullanılmıştır. Sentez tekniği diğer metallerin birikimi da kullanılmıştır ve yakıt hücreleri, electrolyzers ve elektrokimyasal oksidasyon alkoller18,19,20electrocatalysts üretti, 21. Benzer protokoller de elektrokimyasal uygulamaları daha geniş bir yelpazesi ile Nanomalzemeler sentezi için adapte edilebilir.

<table border="0" cellpadding="0" cellspacing="0" style="width:681px;" width="680">
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	<tbody>
		<tr height="40">
			<td height="40" style="height:40px;width:215px;">Nickel nanowires</td>
			<td style="width:300px;">Plasmachem GmbH</td>
			<td style="width:167px;"></td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">250 mL round bottom flask</td>
			<td>Ace Glass</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Hot plate</td>
			<td>VWR International</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Mineral oil</td>
			<td>VWR International</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Potassium tetrachloroplatinate</td>
			<td>Sigma Aldrich</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Syringe pump</td>
			<td>New Era Pump Systems</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Rotator</td>
			<td>Arrow Engineering</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Teflon paddle</td>
			<td>Ace Glass</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Glass shaft</td>
			<td>Ace Glass</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Split hinge tubular furnace</td>
			<td>Lindberg</td>
			<td></td>
			<td>Customized in-house</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Schlenk line</td>
			<td>Ace Glass</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Condensers</td>
			<td>VWR International</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Nitric acid</td>
			<td>Fisher Scientific</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">2-propanol</td>
			<td>Fisher Scientific</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Nafion ionomer (5 wt. %)</td>
			<td>Sigma Aldrich</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Glassy carbon working electrode</td>
			<td>Pine Instrument Company</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">RDE glassware</td>
			<td>Precision Glassblowing</td>
			<td></td>
			<td>Customized in-house</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Platinum wire</td>
			<td>Alfa Aesar</td>
			<td></td>
			<td>Customized in-house</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Platinum mesh</td>
			<td>Alfa Aesar</td>
			<td></td>
			<td>Customized in-house</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">MSR Rotator</td>
			<td>Pine Instrument Company</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Potentiostat</td>
			<td>Metrohm Autolab</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

synthesis of platinum-nickel nanowires and optimization for oxygen reduction performance

Platin-nikel (Pt-Ni) nanowires yakıt hücresi electrocatalysts geliştirilmiş ve performans ve dayanıklılık oksijen azaltma tepki için optimize. Spontan galvanik deplasman Pt katmanları Ni nanowire yüzeyler üzerine yatırmak için kullanıldı. Sentez yaklaşım katalizörler yüksek belirli faaliyetleri ve yüksek Pt yüzey alanları ile üretilen. Hidrojen tavlama Pt ve Ni karıştırma ve belirli aktivite geliştirilmiş. Asit leaching tercihen Ni nanowire yüzey kaldırmak için kullanılan ve oksijen tavlama yüzey yakınındaki Ni, dayanıklılık geliştirmek ve Ni dağılmasından en aza indirmek dengelemek için kullanılmıştır. Bu protokoller hidrojen ile 250 ° C, pozlama 0.1 M nitrik asit ve oksijen 175 ° C'ye tavlama tavlama dahil olmak üzere her sonrası sentez işleme adımının optimizasyonu detay Bu adımları, Pt-Ni nanowires bir büyüklük Pt nano tanecikleri, daha fazla artan faaliyetleri önemli dayanıklılık Gelişmeler sunarken üretti. Sunulan protokolleri Pt-Ni sistemler, yakıt hücresi katalizörler geliştirilmesinde temel alır. Bu teknikler de metal kombinasyonları çeşitli için kullanılan ve elektrokimyasal süreçlerin bir dizi için Katalizörler geliştirmek için uygulanabilir.

Ni nanowires ile belirtilen miktar kullanarak Pt, spontan galvanik deplasman 7.3 WT % Pt (Resim 1 ve Şekil 2A) idi Pt-Ni nanowires üretti. Bazı değişiklik miktarı ile Pt habercisi yükleme optimum Pt ulaşmak için gerekli. PT yer değiştirme şablonu yaş (Hava pozlama) ve ters yönde değişkenlik22göre değişebilir yüzey Ni oksit tabakası, kalınlığı duyarlıdır. Kompozis...

Watch this Scientific Journal Video about Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance at JoVE.com

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Platin-nikel Nanowires ve oksijen azaltma performansı için en iyi duruma getirme sentezi

Sentez ve elektrokimyasal Platin-nikel nanowires test protokolünü açıklar. Nanowires nikel nanowire şablon galvanik yerinden tarafından sentezlenen. Sonrası sentez işleme, hidrojen tavlama dahil olmak üzere, asit leaching ve oksijen tavlama nanowire performans ve dayanıklılık oksijen azaltma tepki olarak optimize etmek için kullanılmıştır.

Platinum-nickel (Pt-Ni) nanowires were developed as fuel cell electrocatalysts, and were optimized for the performance and durability in the oxygen ...

The overall goal of this procedure is to produce platinum based, extended surface electro-catalysts, that demonstrate a high level of performance and durability in the oxygen reduction reaction. This method could help address key issues in hydrogen fuel cells by reducing the amount of platinum required, and cutting the cost of the catalyst layer. The main advantage of this technique is that produces materials with high electrochemical surface areas, attritional limitation of surface catalysts.Begin the nanowire synthesis steps with the displacement process. In a 50 milliliter centrifuge tube, add 20 milliliters deionized water, and 40 milliliters nickel nanowires. Place the mixture in a sonicator and sonicate for five minutes.Meanwhile, prepare a mineral oil bath and an electric stirrer. Retrieve the suspended nanowires from the sonicator, and transfer them to a glass, 250 milliliter round-bottom flask. Add to the flask, 60 milliliters of deionized water.Then place it in the mineral bath to be heated to 90 degrees Celsius, and simultaneously stirred at 500 RPM. Equip the stirrer with a PTFE paddle on a glass shaft. Now form the platinum nickel nanowires.Have ready an automated syringe pump, and prepare a syringe. Use a 20 milliliter syringe with about 8 centimeters of tubing on its tip. Next, obtain 15 milliliters of deionized water, and add 8.1 milligrams of potassium tetrachloroplatinate.Transfer the solution to the syringe. Then place the syringe on the syringe pump. Arrange for the pump to add the solution to the flask containing nanowires.Set the rate to one milliliter per minute, and start the pump. Once the transfer is complete, continue stirring and heating the flask at 90 degrees Celsius for two hours. After two hours, put the solution in to a centrifuge tube, and centrifuge at 2500 G, for 15 minutes.Centrifugation gives rise to supernatant in the tube. Pour this off in to a waste container. With the supernatant gone, add fresh deionized water to the solids.Sonicate the mixture for about 10 seconds. Repeat the centrifuge, supernatant removal, and re-suspension steps, 3 times with the water, and a fourth with 2-Proponal. In the end, put the nanowires in a 20 milliliter, glass scintillation vial.Take the nanowires to a vacuum oven to dry at 40 degrees Celsius, overnight. First prepare, in a 20 milliliter scintillation vial, what is called the Ink. This is deionized water, a catalyst with 73 micrograms of platinum, and 2-propanol.Ice the vial for five minutes. After five minutes, add 10 microliters of ionomer to the ink. Return the vial to the container of ice, and move both to the sonicator.Sonicate the vial for 30 seconds by horn. Follow this with bath sonication for 20 minutes. End with another 30 seconds of horned sonication.During sonication, prepare a container of graphitized carbon nanofibers. Get the sonicated ink and use a pipette to draw out 7.5 milliliters. Add the drawn out ink to the nanofibers.Now, sonicate the ink in ice with a horn for 30 seconds. Then by bath for 20 minutes. And by horn again, for 30 seconds.Have ready, an inverted rotator with a working electrode mounted on it. Here, a glassy carbon electrode is ready for coating. Start the electrode spinning at 100 RPM, and pipette 10 microliters of the sonicated ink on to it.When done, increase the rotation to 700 RPM. As the electrode drys, repeat the three sonication steps with the ink. With the mixture speed at 100 RPM, pipette and additional 10 micrograms of ink on to the working electrode, before increasing the rotation speed to 700 RPM.Fill the half cell with one-tenth molar perchloric acid. Now assemble the rotating disk electrode test station. The test station has a working reference, and counter electrode connected to the main testing cell.Next, connect the working electrode to a modulated speed controller. Then, submerge the working electrode tip in the acid. Set up a potentiostat to take electrochemical measurements.Prior to electrochemical conditioning, purge the electrolyte with nitrogen for seven minutes. Now, prepare to measure oxygen reduction polarization curves. Start the working electrode, rotating at 2500 RPM.Purge the electrolyte with oxygen. After seven minutes, set the oxygen purge to blanket the electrolyte. Slow the electrode rotation to 1600 RPM.Set the parameters for an automated linear sweep photometry measurement and run the experiment. When the measurement is completed, stop the rotation and discard the electrolyte. After refilling the cell with perchloric acid, and immersing the electrode, purge it with oxygen for seven minutes.Perform the linear sweep photometry measurement again, using the same parameters. These data show the platinum nickel nanowire composition as a function of the amount of the platinum precursor. Potassium tetrachloroplatinate, added to 40 milligrams of nickel nanowires during galvanic displacement.An increase of platinum precursor during galvanic displacement, increases the platinum content and the resulting catalyst. This plot is the electrochemical surface area versus the platinum displacement. Increasing platinum content, generally results in catalyst with lower platinum based electrochemical surface areas.Optimal performance occurred at a composition of 7.3%platinum. Here's the mass activity for the oxygen reduction reaction as a function of a kneeling temperature. A temperature of 250 degrees Celsius, produced catalyst with optimal mass activity.Once mastered, this technique can be completed at approximately one week, if performed properly. While attempting this procedure, it is important to remember that contaminants on a part-per-trillion level are electrochemically relevant. Following this procedure, other methods, including microscopy and membrane electrode assembly testing can be completed to answer additional questions, including kettle structure and device performance.From these protocols, we have developed extended service catalysts for proton and nano exchanged membrane fuel cells, electrolyzers and alcohol based fuel cells. After watching this video, you should have a good idea how to synthesize and electrochemically test platinum based extended surface electro-catalyst that demonstrate a high level of performance and durability in the ontra production reaction. Don't forget that working with concentrated acid and pressurized gas, particularly, hydrogen and carbon monoxide can be extremely hazardous and precautions such as, using personal protective equipment and ventilation control should always be taken while performing this procedure.

Research

JoVE Journal

Chemistry

Isolation and Preparation of Bacterial Cell Walls for Compositional Analysis by Ultra Performance Liquid Chromatography

Ultra Performanslı Sıvı Kromatografisi ile Bileşimsel Analiz için Bakteriyel Hücre Duvarlarının İzolasyonu ve Hazırlanması

The bacterial cell wall is critical for the determination of cell shape during growth and division, and maintains the mechanical integrity of cells in the ...

Kimya

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica

Sentezi ve Mezogözenekli Silika Walls Altın interkalasyonlu Katalitik Performans

As a promising catalytically active nano reactor, gold nanoparticles intercalated in mesoporous silica (GMS) were successfully synthesized and properties ...

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

Sentetik Proteinlerin Optimizasyon: interpozisyonel bağımlılıklar belirlenmesi Yapısal belirten ve / veya Fonksiyonel Bağlantılı tortular

Protein alignments are commonly used to evaluate the similarity of protein residues, and the derived consensus sequence used for identifying functional ...

Synthesis and Characterization of Supramolecular Colloids

Supramoleküler Kolloidlerin Sentezi ve Karakterizasyonu

Control over colloidal assembly is of utmost importance for the development of functional colloidal materials with tailored structural and mechanical ...

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Sentez ve elektrokimyasal CO2 azaltılması için geçiş metalleri tek Atom katalizör performans karakterizasyonu

This protocol presents both the synthesis method of the Ni single atom catalyst, and the electrochemical testing of its catalytic activity and selectivity ...

Synthesis of Substrate-Bound Au Nanowires Via an Active Surface Growth Mechanism

Substrat bağlı Au Nanowires bir aktif yüzey büyüme mekanizması yoluyla sentezi

Advancing synthetic capabilities is important for the development of nanoscience and nanotechnology. The synthesis of nanowires has always been a ...

A Rapid Synthesis Method for Au, Pd, and Pt Aerogels Via Direct Solution-Based Reduction

Otomatik Güncelleştirmeler, Pd ve Pt Aerogels üzerinden doğrudan çözüm tabanlı azaltma için hızlı sentez yöntemi

Here, a method to synthesize gold, palladium, and platinum aerogels via a rapid, direct solution-based reduction is presented. The combination of various ...

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles

Nanodiamonds ve gümüş nano tanecikleri onun azaltılması biyo-ilham Polydopamine yüzey modifikasyonu

Surface functionalization of nanodiamonds (NDs) is still challenging due to the diversity of functional groups on the ND surfaces. Here, we demonstrate a ...

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

U2O5 Film Hazırlık UO2 ifade doğru akım fışkırtması ve art arda gelen oksidasyon ve Redüksiyon atomik oksijen ve Atomik hidrojen ile üzerinden

We describe a method to produce U2O5 films in situ using the Labstation, a modular machine developed at JRC Karlsruhe. The Labstation, an essential part ...