Low-cost industrially available molybdenum boride and carbide as "platinum-like" catalysts for the hydrogen evolution reaction in biphasic liquid systems.
Low-cost industrially available molybdenum boride and carbide as "platinum-like" catalysts for the hydrogen evolution reaction in biphasic liquid systems.
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DOI：
10.1039/c2cp44522k
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发表时间：
2013-01
期刊：
影响因子：
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通讯作者：
Micheál D. Scanlon;Xiaojun Bian;Heron Vrubel;V. Amstutz;K. Schenk;Xile Hu;Baohong Liu;H. Girault
中科院分区：
文献类型：
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作者：
Micheál D. Scanlon;Xiaojun Bian;Heron Vrubel;V. Amstutz;K. Schenk;Xile Hu;Baohong Liu;H. Girault
很少报道的低成本硼化钼和碳化钼微粒，这两者由于其在工业上的广泛应用而大量可用，在有机电子给体十甲基二茂铁存在下，吸附在水溶液酸-1，2-二氯乙烷界面处并有效地催化析氢反应。通过UV/维斯光谱监测两相反应的动力学研究以及通过气相色谱提供的进一步证据突出了（a）它们相对于其它工业上重要的过渡金属碳化物和硅化物以及主族难熔化合物的上级催化速率，以及（B）它们与相似尺寸的Pt微粒的催化速率高度可比。洞察到每个吸附微粒发生的催化过程中得到的伏安法在液-液界面。
Rarely reported low-cost molybdenum boride and carbide microparticles, both of which are available in abundant quantities due to their widespread use in industry, adsorb at aqueous acid-1,2-dichloroethane interfaces and efficiently catalyse the hydrogen evolution reaction in the presence of the organic electron donor - decamethylferrocene. Kinetic studies monitoring biphasic reactions by UV/vis spectroscopy, and further evidence provided by gas chromatography, highlight (a) their superior rates of catalysis relative to other industrially significant transition metal carbides and silicides, as well as a main group refractory compound, and (b) their highly comparable rates of catalysis to Pt microparticles of similar dimensions. Insight into the catalytic processes occurring for each adsorbed microparticle was obtained by voltammetry at the liquid-liquid interface.