首页|Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts
Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts
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The direct activation of methane under mild condition to achieve highly selective of oxygenates is a challenging project.In this study,a well dispersed silver supported ZnTiO3 catalyst was prepared to achieve selective preparation of methanol from methane and water under mild condition.X-ray diffraction,transmission electron microscopy and X-ray photoelectron spectroscopy characterizations demonstrate that silver species are uniformly dispersed on ZnTiO3 surface in the form of metallic silver nanoparticles.The photoelectric characterizations reveal that the addition of silver species enhances light absorption and promotes charge separation of the catalysts.Under the reaction conditions of 50 ℃ and 3 MPa,the methanol is obtained as the only liquid product over the designed Ag/ZnTiO3 catalyst under light irradiation.In this photocatalytic process,the holes generated by ZnTiO3 activate water to produce intermediate OH,which further reacts with methane to synthesize methanol.The silver species as co-catalysts extend the light absorption range of ZnTiO3 as well as promote charge separation.
Yuyan Gan、Jinbi Huang、Qian Lv、Yanru Li、Lizhi Wu、Yu Tang、Yuanxing Fang、Pengfei Zhu、Li Tan
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Institute of Molecule Catalysis and In-Situ/Operando Studies,State Key Laboratory of Photocatalysis on Energy and Environment,College of Chemistry,Fuzhou University,Fuzhou,350108,China
School of Environmental Science and Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China
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