title: Artificial Photosynthesis of Alcohols by Multi-Functionalized Semiconductor Photocathodes.
abstract: Novel artificial photosynthesis systems are devised as cells of dye/Pd/NR-MOx(M=Ti, Zn)∥CoPi/W:BiVO4that convert efficiently CO2to alcohols. The photocathodes are aminofunctionalized, palladium-deposited, and in situ sensitized nano-TiO2or ZnO/FTO (FTO: fluorine-doped tin oxide) electrodes that are characterized by X-ray photoelectron spectroscopy (XPS), TEM, XRD, UV/Vis spectra, and evaluated by electrochemical techniques. The cell of dye/Pd/S-TiO2∥CoPi/W:BiVO4uniquely generates ethanol under irradiation of 200 mW cm-2, reaching 0.56 % quantum efficiency (QE) at -0.56 V and 0.13 % QE without external electron supply. The cell of dye/Pd/ N-ZnO∥CoPi/W:BiVO4produces solely methanol at a rate of 42.8 μm h-1cm-2at -0.56 V of a Si solar cell, which is far less than the electrochemical voltage of water splitting (1.23 V). Its QE reaches to 0.38 %, which is equal to plants. The isotopic labeling experiments confirm the carbon source and oxygen releasing. The selectivity for alcohols of multi-functionalized semiconductors is discussed.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Yuqian
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Bo
authors.initials: B
authors.lastname: Han
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Yanjie
authors.initials: Y
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Dongning
authors.initials: D
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Yongjian
authors.initials: Y
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Rong
authors.initials: R
authors.lastname: Nie
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Zhouhe
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.
authors.forename: Fengjuan
authors.initials: F
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan, Shanxi, 030001, P. R. China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, 222 South Tianshui Road, Lanzhou, Gansu, 730000, P. R. China.|State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan, Shanxi, 030001, P. R. China.
authors.forename: Huanwang
authors.identifier: 0000-0003-3814-0087
authors.initials: H
authors.lastname: Jing
mesh_terms: D000438:Alcohols / Q000138:chemical synthesis*; D004566:Electrodes; D046529:Microscopy, Electron, Transmission; D010788:Photosynthesis; D012666:Semiconductors; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000438:Alcohols
keywords: artificial photosynthesis; carbon dioxide reduction; photoelectrocatalysis; quantum efficiency; water splitting