材料科学
钛酸钡
甲烷化
纳米颗粒
镍
光热治疗
光热效应
化学工程
可见光谱
钛酸酯
光化学
人工光合作用
纳米技术
辐照
催化作用
光催化
光电子学
冶金
陶瓷
复合材料
有机化学
核物理学
化学
工程类
物理
作者
Diego Mateo,Natalia Morlanés,Partha Maity,Genrikh Shterk,Omar F. Mohammed,Jorge Gascón
标识
DOI:10.1002/adfm.202008244
摘要
Abstract Solar‐driven methanation represents a potentially cost‐efficient and environmentally friendly route for the direct hydrogenation of CO 2 . Recently, photothermal catalysis, which involves the combination of both photochemical and thermochemical pathways, has emerged as a promising strategy for the production of solar fuels. For a photothermal catalyst to efficiently convert CO 2 under illumination, in the absence of external heating, effective light harvesting, an excellent photothermal conversion and efficient active sites are required. Here, a new composite catalyst consisting of Ni nanoparticles supported on barium titanate that, under optimal reaction conditions, is able to hydrogenate CO 2 to CH 4 at nearly 100% selectivity with production rates as high as 103.7 mmol g –1 h –1 under both UV–visible and visible irradiation (production rate: 40.3 mmol g −1 h –1 ) is reported. Mechanistic studies suggest that reaction mostly proceeds through a nonthermal hot‐electron‐driven pathway, with a smaller thermal contribution.
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