Photocatalytic co-production of hydrogen and alkanes from short chain fatty acids over Cu2O particle: Effects of electron donors

Zheng, Xian-Jun1; Zhao, Meng1; Li, Cui-Ling1; Zheng, Zhi2; Wei, Li-Fang1; Chen, Feng-Hua1; Wang, Huan-Xin1; Chen, Ping-Ping1; Qin, Xiao-Mei1

2017-12-14

10.1016/j.ijhydene.2017.10.083

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

Effects of electron donors on photocatalytic production of H-2 and hydrocarbons over Cu2O photocatalyst have been systematically investigated in this paper. The cubic Cu2O has been synthesized by reduction precipitation method and further characterized by XRD, SEM and UV-vis DRS. Short chain fatty acids (SCFAs) including acetic acids, propionic acids and butyric acids, main by-products produced during dark H-2 fermentation, have been chosen as typical electron donors. Experimental results showed that distributions of gaseous products during photocatalytic water-splitting process were greatly influenced by individual and mixed SCFAs. Using three mixed SCFAs as electron donors, the overall carbon recoveries obtained in this study are in range of 86.11-95.36%. The AQEs in our photo catalytic system are changed from 4.88% to 8.94%. The AECEs in our photocatalytic system are varied from 4.46% to 10.48%. Based on our experimental results, a novel route for renewable energy generation from organic wastes or wastewater can be established by coupling dark H-2 fermentation with photocatalytic system. According to distributions of gaseous products and known intermediates, a possible mechanism about photocatalytic decomposition of SCFAs for production of H-2 and hydrocarbons has been proposed and analyzed as well. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Electron donors Short chain fatty acids Hydrogen Hydrocarbons Cu2O

SCI ; EI

英语

其他

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

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000419417600005

PERGAMON-ELSEVIER SCIENCE LTD

20174504376477

Butyric acid ; Chains ; Copper oxides ; Electrons ; Fermentation ; Hydrocarbons ; Hydrogen ; Precipitation (chemical) ; Propionic acid ; Renewable energy resources

Energy Resources and Renewable Energy Issues:525.1 ; Mechanical Drives:602.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804

ENGINEERING

Web of Science

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

Zheng, Xian-Jun,Zhao, Meng,Li, Cui-Ling,et al. Photocatalytic co-production of hydrogen and alkanes from short chain fatty acids over Cu2O particle: Effects of electron donors[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42(50):29672-29685.

Zheng, Xian-Jun.,Zhao, Meng.,Li, Cui-Ling.,Zheng, Zhi.,Wei, Li-Fang.,...&Qin, Xiao-Mei.(2017).Photocatalytic co-production of hydrogen and alkanes from short chain fatty acids over Cu2O particle: Effects of electron donors.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42(50),29672-29685.

Zheng, Xian-Jun,et al."Photocatalytic co-production of hydrogen and alkanes from short chain fatty acids over Cu2O particle: Effects of electron donors".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42.50(2017):29672-29685.