Feng Tiantian, Cui Zhijie, Guo Pengfei, Wang Xuehong, Li Juan, Liu Xien, Wang Wenpin, Li Zhongcheng
Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Jiangsu Provincial Key Laboratory of Eco-Environmental Materials, Yancheng Institute of Technology, Yancheng 224051, China.
J Colloid Interface Sci. 2023 Apr 15;636:618-626. doi: 10.1016/j.jcis.2023.01.054. Epub 2023 Jan 13.
Recent experimental analysis indicates WO-based nanostructures exhibit poor hydrogen evolution reactivity, particularly in alkaline medium, arising from the low electron transfer rate. It is imperative to tune the composition and structure of WO to boost the cleavage of H-OH bond. Here, we construct Ru/WO-WN/N-doped carbon sheets (Ru/WO-WN/NC) using m-WO nanosheets as precursors with the aid of RuCl, Tris (hydroxymethyl) aminomethane, and dopamine. Structural investigation reveals the formation of N-doped carbon sheets, Ru nanoparticles, and WO-WN. As a result, hydrogen evolution reactivity is greatly improved on Ru/WO-WN/N-doped carbon sheets with 64 mV at 10 mA/cm in 1 mol/L (M) KOH, outperforming most of WO-based electrocatalysts in previous literatures. Meanwhile, it facilitates the generation of H in 0.5 M HSO with the excellent activity of 110 mV at 10 mA/cm. Our work provides an efficient strategy to tailor the electronic structure of WO to catalyze acidic and alkaline hydrogen evolution reaction.
最近的实验分析表明，基于WO的纳米结构表现出较差的析氢反应活性，尤其是在碱性介质中，这是由于电子转移速率低所致。调整WO的组成和结构以促进H-OH键的裂解势在必行。在此，我们以m-WO纳米片为前驱体，借助RuCl、三（羟甲基）氨基甲烷和多巴胺构建了Ru/WO-WN/N掺杂碳片（Ru/WO-WN/NC）。结构研究揭示了N掺杂碳片、Ru纳米颗粒和WO-WN的形成。结果，在1 mol/L（M）KOH中，Ru/WO-WN/N掺杂碳片在10 mA/cm²时的析氢反应活性大大提高，过电位为64 mV，优于以往文献中大多数基于WO的电催化剂。同时，它在0.5 M H₂SO₄中以10 mA/cm²时110 mV的优异活性促进了H⁺的生成。我们的工作提供了一种有效的策略来调整WO的电子结构，以催化酸性和碱性析氢反应。
