共 43 条
Visible-light-enhanced hydrogen evolution from catalytic hydrolysis of ammonia borane using Ru nanoparticles supported on CdS-modified graphitic carbon nitride
被引:7
作者:
Wei, Lei
[1
]
Zhang, Yani
[1
]
Liu, Jingyang
[1
]
Li, Yepei
[1
]
Lu, Yanhong
[1
]
Liu, Hongyan
[1
]
机构:
[1] Langfang Normal Univ, Coll Chem & Mat Sci, Langfang 065000, Peoples R China
关键词:
METAL-ORGANIC FRAMEWORK;
EFFICIENT CATALYSTS;
RUTHENIUM NANOPARTICLES;
FACILE SYNTHESIS;
H-2;
PRODUCTION;
QUANTUM DOTS;
DEHYDROGENATION;
GENERATION;
PHOTOCATALYSTS;
NANOCOMPOSITES;
D O I:
10.1039/d2nj03770j
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Photocatalytic hydrolysis of ammonia borane (AB) has been regarded as an efficient and safe approach for hydrogen evolution. In this work, an optimized CdS/C3N4 heterojunction was employed as the photoactive support, and ultrafine Ru nanoparticles were deposited by impregnation and chemical reduction, yielding a Ru/CdS/C3N4 photocatalyst for AB hydrolysis. A series of advanced techniques were used for material characterization involving micromorphology, phase structure, chemical composition, and optical properties. Compared with raw g-C3N4, the heterojunction possesses a stronger absorption ability in the visible-light region, which endows the prepared Ru/CdS/C3N4 with excellent photocatalytic activity. For AB hydrolysis, visible-light-enhanced TOF was measured to be 132.9 min(-1) (25 degrees C), which is 2.2-fold higher than the value obtained under dark conditions. The AB hydrolysis behavior and photocatalysis mechanism were investigated in detail. Additionally, Ru/CdS/C3N4 retains 86% of the initial activity after recycling five times, showing that the photocatalyst has a good prospect for practical applications.
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页码:19731 / 19739
页数:9
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