| Ru纳米团簇/MoO3-x纳米带双功能催化剂的合成及其肼辅助全解水性能 | |
| Synthesis and Hydrazine-Assisted Overall Water Splitting Performance of Ru Nanoclusters/MoO3-x Nanobelt Bifunctional Catalyst | |
| 摘要: 将超小Ru纳米团簇锚定于富含氧空位MoO3-x纳米带的双功能催化剂（Ru/MoO3-x）。该催化剂展现出优异的肼氧化（HzOR）和析氢反应（HER）催化性能，10 mA·cm-2时的过电势分别为-79和-27 mV，所组成的肼辅助电催化全解水（OWS）的电解池电压仅为13 mV，明显优于商业化20% Pt/C和已报道的一些催化剂。如此优异的性能主要归因于Ru纳米团簇有利于HzOR中N2H4的脱氢和HER氢中间体的吸/脱附平衡以及MoO3-x中的氧空位和Ru/MoO3-x异质结构导致的丰富的电化学活性位点和优化的电子转移动力学。 | |
| 关键词: 钌 肼氧化反应 析氢反应 氧空位 双功能催化剂 | |
| 基金项目: 国家自然科学基金（No.22075147，22102073）资助 | |
| Abstract: This work reports a bifunctional catalyst consisting of ultra-small Ru nanoclusters anchored onto oxygenvacancy-enriched MoO3-x nanobelts (Ru/MoO3-x). The obtained catalyst exhibited excellent hydrazine oxidation reaction (HzOR) and hydrogen evolution reaction (HER) performances with a low overpotential of-79 and-27 mV at 10 mA·cm-2, respectively. And the assembled hydrazine-assisted overall water splitting (OWS) device required a low cell voltage of only 13 mV, significantly better than commercial 20% Pt/C and some recently reported catalysts. Such excellent performance is mainly attributed to Ru nanoclusters facilitating dehydrogenation of N2H4 in HzOR and balancing of H* adsorption/desorption in HER and the abundant electrochemical active sites, optimized electron transfer kinetics resulting from oxygen vacancies in MoO3-x and Ru/MoO3-x heterostructures. | |
| Keywords: Ru hydrazine oxidation reaction hydrogen evolution reaction oxygen vacancy bifunctional catalyst | |
| 投稿时间：2022-06-29 修订日期：2022-08-08 | |
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| 常亚楠,陆徐云,马张玉,许冬冬,刘影,包建春.Ru纳米团簇/MoO3-x纳米带双功能催化剂的合成及其肼辅助全解水性能[J].无机化学学报,2022,38(10):2037-2046. | |
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