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首页> 外文期刊>RSC Advances >Electroless deposition of RuO2-based nanoparticles for energy conversion applications
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Electroless deposition of RuO2-based nanoparticles for energy conversion applications

机译：基于RuO2的纳米粒子的化学沉积，用于能量转换应用

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This study reports a delicate electroless approach for the deposition of RuO _(2) · n H _(2) O nanoparticles on the VO _( x ) · m H _(2) O nanowires and this method can be extended to deposit RuO _(2) · n H _(2) O 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 ~(4+) species of VO _( x ) · m H _(2) O, which drives the oxidation of RuCl _(3) to proceed with the growth of RuO _(2) · n H _(2) O. This core/shell VO _( x ) · m H _(2) O/RuO _(2) · n H _(2) O shows a better catalytic activity of the oxygen reduction reaction (ORR) than RuO _(2) · n H _(2) O, which is ascribed to the pronounced dispersion of RuO _(2) · n H _(2) O. Such an electroless approach was applicable to the preparation of a RuO _(2) -based nanoparticle suspension as well as the deposition of nanocrystalline RuO _(2) · n H _(2) O on other functional supports like TiO _(2) nanowires. The thus-obtained RuO _(2) -decorated TiO _(2) 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 _(2) · n H _(2) O in a variety of energy-related applications.
机译：这项研究报告了一种精细的化学方法，用于在VO _（x）·m H _（2）O纳米线上沉积RuO _（2）·n H _（2）O纳米粒子，并且该方法可以扩展为沉积RuO _（2）·n H _（2）O纳米粒子在各种材料表面上。进行了电化学表征，包括线性扫描伏安法（LSV），电化学石英晶体微量天平（QCM）分析和旋转圆盘电极（RRDE）伏安法，以研究其生长机理。沉积涉及通过VO _（x）·m H _（2）O的V〜（4+）物种对溶解氧的催化还原，其驱动RuCl _（3）氧化以继续RuO的生长_（2）·n H _（2）O。此核/壳VO _（x）·m H _（2）O / RuO _（2）·n H _（2）O显示出更好的催化活性氧还原反应（ORR）比RuO _（2）·n H _（2）O大，这归因于RuO _（2）·n H _（2）O的明显分散。这种无电方法是适用的制备基于RuO _（2）的纳米粒子悬浮液，以及在其他功能性载体（如TiO _（2）纳米线上）上沉积纳米晶体RuO _（2）·n H _（2）O。如此获得的RuO_（2）修饰的TiO_（2）纳米棒对光电化学水氧化显示出显着增强的光活性。当前无电方法的多功能性可以促进纳米晶体RuO_（2）·nH_（2）O在各种与能源有关的应用中的广泛部署。

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