氢
相(物质)
电催化剂
相变
材料科学
溢出效应
化学
化学工程
无机化学
电化学
电极
物理化学
物理
有机化学
凝聚态物理
工程类
经济
微观经济学
作者
Jiexian Liu,Peifang Guo,Da Li,Xiaoxiao Yan,Xin Tu,Hongge Pan,Renbing Wu
出处
期刊:Small
[Wiley]
日期:2024-04-04
标识
DOI:10.1002/smll.202400783
摘要
Abstract Endowing conventional materials with specific functions that are hardly available is invariably of significant importance but greatly challenging. TiO 2 is proven to be highly active for the photocatalytic hydrogen evolution while intrinsically inert for electrocatalytic hydrogen evolution reaction (HER) due to its poor electrical conductivity and unfavorable hydrogen adsorption/desorption behavior. Herein, the first activation of inert TiO 2 for electrocatalytic HER is demonstrated by synergistically modulating the positions of d‐band center and triggering hydrogen spillover through the dual doping‐induced partial phase transition. The N, F co‐doping‐induced partial phase transition from anatase to rutile phase in TiO 2 (AR‐TiO 2 |(N,F)) exhibits extraordinary HER performance with overpotentials of 74, 80, and 142 mV at a current density of 10 mA cm –2 in 1.0 M KOH, 0.5 M H 2 SO 4 , and 1.0 M phosphate‐buffered saline electrolytes, respectively, which are substantially better than pure TiO 2 , and even superior to the benchmark Pt/C catalysts. These findings may open a new avenue for the development of low‐cost alternative to noble metal catalysts for electrocatalytic hydrogen production.
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