Boron-doped CN supported metallic Co catalysts with interfacial electron transfer for enhanced photothermal CO hydrogenation

被引:26
|
作者
Hao, Quanguo [1 ]
Li, Zhenhua [2 ]
Shi, Yiqiu [1 ]
Li, Ruizhe [1 ]
Li, Yuan [1 ]
Ouyang, Shuxin [1 ]
Yuan, Hong [1 ]
Zhang, Tierui [2 ]
机构
[1] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金; 北京市自然科学基金;
关键词
Co-based catalysts; Boron doping; Interfacial electron; Photothermal catalysis; FISCHER-TROPSCH SYNTHESIS; COBALT CATALYSTS; GRAPHENE; NANOPARTICLES; CONVERSION; REDUCTION; OLEFINS; SYNGAS; SIZE;
D O I
10.1016/j.nanoen.2022.107723
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
Solar-driven Fischer-Tropsch synthesis (FTS) is a promising route to produce solar fuels of value-added hydro-carbons. Herein, an approach of boron doping in CN support to modulate the interfacial electronic structure of Co-BCN catalysts is developed to promote the yield of hydrocarbon products in photothermal FTS. Under light irradiation, the optimized Co-BCN catalyst delivers a hydrocarbon selectivity of 96.9 % at a CO conversion over 40 %, which is 4.3 and 10.2 times that of Co-CN and Co-C catalysts, respectively. Detailed characterizations demonstrate that the electron transfer between Co nano-metal and BCN support, where electronic structure at interface is modulated. The formation of electron-rich interface in Co-BCN could promote CO activation with assistance of H* and thus enhance the conversion of CO. This work not only paves the way for the modulation of interface electrons to enhance photothermocatalytic activity but also offers a promising strategy toward the rational design and preparation of highly efficient catalysts.
引用
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页数:10
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