光热治疗
光热效应
催化作用
光化学
甲烷
材料科学
太阳能
化学工程
二氧化碳重整
辐照
合成气
电子转移
纳米技术
化学
有机化学
生态学
物理
核物理学
工程类
生物
作者
Ying Tang,Yangyang Li,Wentao Bao,Wenxia Yan,Jie Zhang,Yifan Huang,Han Li,Zijun Wang,Minmin Liu,Feng Ye
标识
DOI:10.1016/j.apcatb.2023.123054
摘要
CH4 and CO2, which are greenhouse gases, can be converted into valuable syngas through the solar-powered photothermal dry reforming of methane (DRM); this process also facilitates the collection and storage of solar energy. However, conventional photothermal catalysts insufficient catalytic activity for light enhancement at high temperatures. Herein, we report a photothermal catalyst Ru/SrTiO3. The yields of CO and H2 were 1.4–1.5 times those obtained using the thermocatalytic process at 600℃ and under 300-W xenon lamp irradiation. Based on in situ–irradiated X-ray photoelectron spectroscopy and density functional theory calculations, light can induce electron transfer from SrTiO3 to Ru in Ru/SrTiO3 catalysts and participate in CH4 dehydrogenation and H2 generation, lowering its reaction energy barrier. Moreover, photogenerated electrons can suppress the occurrence of inverse water–gas reaction. This study clarifies the mechanism of the photothermal DRM, providing a useful guide for the future solar photothermal conversion of greenhouse gases.
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