Boosting Hydrogen Evolution Reaction by Phase Engineering and Phosphorus Doping on Ru/P-TiO2

被引：120

作者：

Zhou, Shizheng ^{[1
]}

Jang, Haeseong ^{[2
]}

Qin, Qing ^{[1
]}

Hou, Liqiang ^{[1
]}

Kim, Min Gyu ^{[3
]}

Liu, Shangguo ^{[1
]}

Liu, Xien ^{[1
]}

Cho, Jaephil ^{[2
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China

[2] Ulsan Natl Inst Sci & Technol UNIST, Sch Energy & Chem Engn, Dept Energy Engn, Ulsan 44919, South Korea

[3] Pohang Accelerator Lab PAL, Beamline Res Div, Pohang 790784, South Korea

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 47期

基金：

中国国家自然科学基金;

关键词：

Electrocatalyst; Hydrogen Evolution Reaction; Hydrogen Spillover; Oxygen Vacancy; Support-Structure Engineering; P-DOPED TIO2; OXYGEN VACANCY; WATER; ADSORPTION; CATALYST; GROWTH;

D O I：

10.1002/anie.202212196

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synergistic optimization of the elementary steps of water dissociation and hydrogen desorption for the hydrogen evolution reaction (HER) in alkaline media is a challenge. Herein, the Ru cluster anchored on a trace P-doped defective TiO2 substrate (Ru/P-TiO2) was synthesized as an electrocatalyst for the HER; it exhibited a commercial Pt/C-like geometric activity and an excellent mass activity of 9984.3 mA mg(Ru)(-1) at -0.05 V vs. RHE, which is 34.3 and 18.7 times higher than that of Pt/C and Ru/TiO2, respectively. Experimental and theoretical studies indicated that using a rutile-TiO2-crystal-phase substrate enhanced the HER activity more than the anatase phase. Rich surface oxygen vacancies on rutile-TiO2 facilitated the adsorption and dissociation of water, while the partial substitution of Ti4+ with P5+ enhanced H-2 generation by facilitating hydrogen spillover from the Ru site to the surface P site, synergistically enhancing the HER activity.

引用

页数：9

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