Catalytic effect of highly dispersed ultrafine Ru nanoparticles on a TiO2-Ti3C2 support: Hydrolysis of sodium borohydride for H2 generation

被引：32
作者：
Li, Tianshuo [1 ,2 ]
Xiang, Cuili [1 ,2 ]
Chu, Hailiang [1 ,2 ]
Xu, Fen [1 ,2 ,3 ]
Sun, Lixian [1 ,2 ,3 ]
Zou, Yongjin [1 ,2 ,3 ]
Zhang, Jian [1 ,2 ,3 ]
机构：
[1] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China
[2] Guangxi Collaborat Innovat Ctr Struct & Property, Guilin 541004, Peoples R China
[3] Minist Educ Elect Informat Mat & Devices, Engn Res Ctr, Guilin 541004, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 906卷
关键词：
TiO2; nanosphere; Ti3C2; Ru nanoparticles; NaBH4; hydrolysis; Hydrogen generation rate; Cyclic stability; PORE-SIZE ANALYSIS; HYDROGEN GENERATION; EFFICIENT CATALYST; SINGLE; PERFORMANCE; GRAPHENE; NICKEL; NANOCOMPOSITE; IR-1/FEOX; EVOLUTION;
D O I：
10.1016/j.jallcom.2022.164380
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To improve the utilization rate of the precious metal, ruthenium, TiO2 nanospheres containing oxygen vacancies are grown on the surface of layered Ti3C2, and superfine Ru nanoparticles are fixed on the surface of TiO2 nanospheres via hydrogen reduction of a Ru precursor. The presence of titanium in a low oxidation state is verified by X-ray photoelectron spectroscopy, thus confirming the existence of oxygen vacancies. Spherical aberration transmission electron microscopy studies indicate the dispersion of uniform Ru nanoparticles (average diameter: similar to 2 nm) on TiO2, and the existence of a part of Ru in the form of single atoms. The catalyst with 0.33 wt% Ru loading exhibits the best catalytic performance in the hydrolysis of NaBH4 (NaBH4 hydrolysis rate at 303 K is 60 L.min(-1).g(Ru)(-1)). Further, the catalyst performs well even after five cycles of use. (c) 12022 Elsevier B.V. All rights reserved.
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页数：8
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