Mesoporous Iron Sulfide for Highly Efficient Electrocatalytic Hydrogen Evolution
Mesoporous Iron Sulfide for Highly Efficient Electrocatalytic Hydrogen Evolution
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DOI：
10.1021/jacs.7b07044
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发表时间：
2017-10-04
影响因子：
15
通讯作者：
Suib, Steven L.
中科院分区：
文献类型：
--
作者：
Miao, Ran;Dutta, Biswanath;Suib, Steven L.
报道了一种不使用硬模板作为析氢反应电催化剂的介孔FeS_2的简便合成方法。采用溶胶凝胶法在硫化氢气氛中进行硫化处理，成功制备了高比表面积的FeS2介孔材料。在碱性条件下(PH 13)，当电流密度为10 mA·cm(-2)时，HER催化剂的过电位为96 mV，Tafel斜率为每十年。理论计算表明，介孔FeS_2优异的催化活性归因于(210)晶面的暴露。介孔FeS_2材料有望替代铂基电催化剂用于裂解水。
We report a facile synthetic protocol to prepare mesoporous FeS2 without the aid of hard template as an electrocatalyst for the hydrogen evolution reaction (HER). The mesoporous FeS2 materials with high surface area were successfully prepared by a sol gel method following a sulfurization treatment in an H2S atmosphere. A remarkable HER catalytic performance was achieved with a low overpotential of 96 mV at a current density of 10 mA.cm(-2) and a Tafel slope of per decade under alkaline conditions (pH 13). The theoretical calculations indicate that the excellent catalytic activity of mesoporous FeS2 is attributed to the exposed (210) facets. The mesoporous FeS2 material might be a promising alternative to the Pt-based electrocatalysts for water splitting.