Photocatalytic degradation of butyric acid over Cu2O/Bi2WO6 composites for simultaneous production of alkanes and hydrogen gas under UV irradiation

Zheng, Xian-Jun1; Li, Cui-Ling1; Zhao, Meng1; Zheng, Zhi2; Wei, Li-Fang1; Chen, Feng-Hua1; Li, Xi-Li1

2017-03-23

10.1016/j.ijhydene.2016.12.131

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

In present study, photocatalytic production of alkanes and hydrogen gas from butyric acid solution over Cu2O/Bi2WO6 composites has been investigated under UV irradiation. The Cu2O/Bi2WO6 heterojunction composites were synthesized by a two-step method, first by a hydrothermal method, and then by a simple reduction precipitation method. The as prepared samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), ultraviolet visible diffuse reflection spectroscopy (DRS) and photoluminescence spectroscopy (PL). In Cu2O/Bi2WO6 composites, the larger spherical Cu2O were covered by smaller Bi2WO6 nanosheets. The 24.36 wt%Cu2O/Bi2WO6 composite showed the highest photo catalytic activity for production of alkanes and hydrogen gas. The enhancement in photocatalytic activity can be ascribed to increment in light absorption and effective inhibition of recombination of photogenerated carriers at the heterostructure interface. Based on distributions of gaseous products and intermediates in liquid, a possible mechanism for photocatalytic decomposition of butyric acid over Cu2O/Bi2WO6 composites is proposed. Our results provide a method for pollutants removal with simultaneous production of alkanes and hydrogen. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Alkanes production Hydrogen production Butyric acid Cu2O/Bi2WO6 Photocatalysis

SCI ; EI

英语

其他

Program for Science and Technology Innovation Talents in Universities of Henan Province[15HASTIT048]

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000401889800016

PERGAMON-ELSEVIER SCIENCE LTD

20170303265984

Complexation ; Copper oxides ; Field emission microscopes ; Heterojunctions ; High resolution transmission electron microscopy ; Hydrogen production ; Irradiation ; Light absorption ; Paraffins ; Photocatalysis ; Photodegradation ; Photoluminescence spectroscopy ; Precipitation (chemical) ; Scanning electron microscopy ; X ray diffraction ; X ray photoelectron spectroscopy

Gas Fuels:522 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Optical Devices and Systems:741.3 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2

ENGINEERING

Web of Science

1.Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Lab Clean Energy, Zhengzhou 450002, Peoples R China
2.South Univ Sci & Technol China, Dept Biol, Shenzhen 518055, Peoples R China

Zheng, Xian-Jun,Li, Cui-Ling,Zhao, Meng,et al. Photocatalytic degradation of butyric acid over Cu2O/Bi2WO6 composites for simultaneous production of alkanes and hydrogen gas under UV irradiation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42(12):7917-7929.

Zheng, Xian-Jun.,Li, Cui-Ling.,Zhao, Meng.,Zheng, Zhi.,Wei, Li-Fang.,...&Li, Xi-Li.(2017).Photocatalytic degradation of butyric acid over Cu2O/Bi2WO6 composites for simultaneous production of alkanes and hydrogen gas under UV irradiation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42(12),7917-7929.

Zheng, Xian-Jun,et al."Photocatalytic degradation of butyric acid over Cu2O/Bi2WO6 composites for simultaneous production of alkanes and hydrogen gas under UV irradiation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42.12(2017):7917-7929.