塔菲尔方程
过电位
介孔材料
电催化剂
化学
催化作用
分解水
化学工程
无机化学
电化学
硫化物
硫化氢
纳米技术
氢
纳米颗粒
制氢
电极
物理化学
材料科学
有机化学
硫黄
工程类
光催化
作者
Ran Miao,Biswanath Dutta,Sanjubala Sahoo,Jian He,Wei Zhong,Shaylin A. Cetegen,Ting Jiang,S. P. Alpay,Steven L. Suib
摘要
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 78 mV 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.
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