材料科学
过电位
催化作用
纳米晶
离子
纳米技术
化学工程
纳米结构
铂金
组合化学
电极
电化学
有机化学
物理化学
化学
工程类
作者
Chengtian Zhang,Qian Liu,Jiawei Zhu,Hong Wang,Xueqin Mu,Weihao Zeng,Zonghua Pu,Pengyan Wang,Lei Chen,Jun Yu,Rui Lin,Shichun Mu
标识
DOI:10.1016/j.mtphys.2023.100996
摘要
Although anion-regulated PtxAy (A is anion, P, S, Se, Te, etc.) catalysts are promising in energy conversion applications, their facile synthesis is very challenging. Herein, we find a facile and general route to synthesize PtxAy-type nanocompounds by anion-regulated-engineering of nanostructural Pt. Taking PtP2 nanocrystals as sample, they can form by one-step phosphorization of Pt nanoparticles dispersed on carbon. PtP2 nanocrystals ∼5 nm in size exhibit excellent hydrogen evolution/oxidation (HER/HOR) and oxygen reduction (ORR) reaction performance. In acidic media, it only requires a HER overpotential of 22 mV to reach the current density of 10 mA cm−2, with exceptional HOR and ORR mass activity, increased by 11.1% and 28.6% compared to Pt catalysts. Also, PtS, PtSe2 and PtTe2 nanocrystals are got by direct sulfuration, selenization, and telluration on nanostructural Pt, respectively, verifying generality of the facile anion-regulation strategy to build PtxAy-type nanocompounds and accessibility to industrial-scale synthesis of anion-regulated Pt catalysts.
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