Ar/H2/O2-Controlled Growth Thermodynamics and Kinetics to Create Zero-, One-, and Two-Dimensional Ruthenium Nanocrystals towards Acidic Overall Water Splitting

被引：32
作者：
Chen, Ligang [1 ]
Li, Yaping [1 ]
Liang, Xin [1 ]
机构：
[1] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
ADVANCED FUNCTIONAL MATERIALS | 2021年 / 31卷 / 11期
基金：
国家重点研发计划;
关键词：
hydrogen evolution reaction; oxygen evolution reaction; Ru nanocrystals; small molecule gas; water splitting; OXYGEN EVOLUTION; EFFICIENT; NANOPARTICLES; NANOSHEETS; PERFORMANCE; MORPHOLOGY; NANOWIRES; CATALYST; SURFACE; CO;
D O I：
10.1002/adfm.202007344
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A gas controlled formation strategy is developed to synthesize free-standing 0D Ru nanoparticles, 1D Ru nanowires, and 2D Ru nanosheets through in-situ regulated growth thermodynamics and kinetics with typical inert, reductive, and oxidative gases (Ar/H-2/O-2). The growth process of these Ru nanoparticles, nanowires, and nanosheets follow non-directional growth, shape-directed nanoparticle attachment, and directional growth mechanisms, respectively. Kinetics studies approve that H-2 accelerates the reduction rate of the Ru precursor, while O-2 depresses the reduction. The calculation results of the Gibbs surface free energy under different gas coverage further show that small molecules' gas can effectively regulate the surface state and growth rate. These Ru nanocrystals exhibit excellent acidic water splitting performance. This work has systematically studied the influence of the small molecule gas on the formation process of the Ru nanocrystals, and provides an effective idea for the development and research of high-performance nanomaterials in the future.
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页数：10
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