期刊
ACS CATALYSIS
卷 10, 期 18, 页码 10364-10374出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.0c02244
关键词
photothermal catalysis; CO2 hydrogenation; iron carbide; iron oxide; selectivity; nonthermal effect
资金
- National Natural Science Foundation of China [21725301, 21932002, 21821004, 21872104]
- National Key R&D Program of China [2017YFB0602200]
- Jacob F. Buckman Chair Award
- Higasket Research Fund
- NSF-MRI [1531585]
- Natural Science Foundation of China [21673273, 21872163]
- Tencent Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1531585] Funding Source: National Science Foundation
Conversion of CO2 into fuels via solar energy would be a promising strategy to reduce CO2 emissions and produce value-added carbon compounds. However, the development of efficient light-harvesting and photocatalytic systems remains a significant challenge because of scarcity of low-cost and high-efficiency catalysts in CO2 conversion. Herein, a tunable selectivity in photothermal CO2 conversion was demonstrated over a series of Fe-based catalysts developed through a simple hydrogenation/carbonization treatment with commercial Fe3O4 as a precursor. The Fe3O4 catalyst demonstrated a full selectivity toward CO (about 100%) and 11.3 mmol g(-1) h(-1) activity for the photothermal catalytic conversion of CO2. More importantly, the purephase theta-Fe3C produced remarkably high selectivity toward hydrocarbon products (>97%) and superior activity (10.9 mmol g(-1) h(-1)) in the photothermal conversion of CO2. Meanwhile, it is found that the selectivity toward a hydrocarbon (CHx) can be modulated by the extent of hydrogenation/carbonization of the Fe3O4 precursor. In addition, we demonstrated the vital influence of the nonthermal effect on the enhanced catalytic performance with the Fe-based catalysts during the photothermal conversion of CO2.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据