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用于能量转换应用的基于RuO的纳米颗粒的化学镀沉积。

Electroless deposition of RuO-based nanoparticles for energy conversion applications.

作者信息

Li Jing-Mei, Hu Chi-Chang, Wu Tzu-Ho, Hsu Yung-Jung

机构信息

Department of Chemical Engineering, National Tsing Hua University Hsinchu 30013 Taiwan

Department of Materials Science and Engineering, National Chiao Tung University Hsinchu 30010 Taiwan.

出版信息

RSC Adv. 2019 Feb 1;9(8):4239-4245. doi: 10.1039/c8ra07810f. eCollection 2019 Jan 30.

DOI:10.1039/c8ra07810f
PMID:35520188
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9060561/
Abstract

This study reports a delicate electroless approach for the deposition of RuO·HO nanoparticles on the VO ·HO nanowires and this method can be extended to deposit RuO·HO nanoparticles on various material surfaces. Electrochemical characterizations, including linear sweep voltammetry (LSV), electrochemical quartz crystal microbalance (QCM) analysis and rotating ring-disc electrode (RRDE) voltammetry, were carried out to investigate the growth mechanism. The deposition involves the catalytic reduction of dissolved oxygen by the V species of VO ·HO, which drives the oxidation of RuCl to proceed with the growth of RuO·HO. This core/shell VO ·HO/RuO·HO shows a better catalytic activity of the oxygen reduction reaction (ORR) than RuO·HO, which is ascribed to the pronounced dispersion of RuO·HO. Such an electroless approach was applicable to the preparation of a RuO-based nanoparticle suspension as well as the deposition of nanocrystalline RuO·HO on other functional supports like TiO nanowires. The thus-obtained RuO-decorated TiO nanorods exhibit significantly an enhanced photoactivity toward photoelectrochemical water oxidation. The versatility of the current electroless approach may facilitate the widespread deployment of nanocrystalline RuO·HO in a variety of energy-related applications.

摘要

本研究报道了一种在VO·HO纳米线上沉积RuO·HO纳米颗粒的精细化学镀方法，该方法可扩展到在各种材料表面沉积RuO·HO纳米颗粒。进行了包括线性扫描伏安法（LSV）、电化学石英晶体微天平（QCM）分析和旋转环盘电极（RRDE）伏安法在内的电化学表征，以研究其生长机理。沉积过程涉及VO·HO中的V物种对溶解氧的催化还原，这推动了RuCl的氧化以促进RuO·HO的生长。这种核壳结构的VO·HO/RuO·HO对氧还原反应（ORR）表现出比RuO·HO更好的催化活性，这归因于RuO·HO的显著分散。这种化学镀方法适用于制备基于RuO的纳米颗粒悬浮液以及在其他功能载体（如TiO纳米线）上沉积纳米晶RuO·HO。如此获得的RuO修饰的TiO纳米棒对光电化学水氧化表现出显著增强的光活性。当前化学镀方法的多功能性可能有助于纳米晶RuO·HO在各种能量相关应用中的广泛应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/2084fbc4b306/c8ra07810f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/9da826f8eec5/c8ra07810f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/acee82cfe320/c8ra07810f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/7b8e39422fe3/c8ra07810f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/943fca8fc206/c8ra07810f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/b0ed384f552b/c8ra07810f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/f81de4f2c4c0/c8ra07810f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/2084fbc4b306/c8ra07810f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/9da826f8eec5/c8ra07810f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/acee82cfe320/c8ra07810f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/7b8e39422fe3/c8ra07810f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/943fca8fc206/c8ra07810f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/b0ed384f552b/c8ra07810f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/f81de4f2c4c0/c8ra07810f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/17ee/9060561/2084fbc4b306/c8ra07810f-f7.jpg

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