Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions

Summary: Nowadays, photoelectrocatalytic (PEC) reduction of CO2 represents a very promising solution for storing solar energy in value-added chemicals, but so far it has been hampered by the lack of highly efficient catalyst of photocathode. Enlightened by the Calvin cycle of plants, here we show th...

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Main Authors:	Jinyuan Wang, Yongji Guan, Xiaogang Yu, Youzhi Cao, Jiazang Chen, Yilin Wang, Bin Hu, Huanwang Jing
Format:	Article
Language:	English
Published:	Elsevier 2020-01-01
Series:	iScience
Online Access:	http://www.sciencedirect.com/science/article/pii/S2589004219305139

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record_format	Article
spelling	doaj-114a7855f28b422391c44f618bdf08722020-11-25T01:36:31ZengElsevieriScience2589-00422020-01-01231Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n HeterojunctionsJinyuan Wang0Yongji Guan1Xiaogang Yu2Youzhi Cao3Jiazang Chen4Yilin Wang5Bin Hu6Huanwang Jing7State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, ChinaKey Laboratory of Colloid, Interface and Chemical Thermodynamics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Corresponding authorSummary: Nowadays, photoelectrocatalytic (PEC) reduction of CO2 represents a very promising solution for storing solar energy in value-added chemicals, but so far it has been hampered by the lack of highly efficient catalyst of photocathode. Enlightened by the Calvin cycle of plants, here we show that a series of three-dimensional C/N-doped heterojunctions of Znx:Coy@Cu are successfully fabricated and applied as photocathodes in the PEC reduction of CO2 to generate paraffin product. These materials integrate semiconductors of p-type Co3O4 and n-type ZnO on Cu foam to construct fine heterojunctions with multiple active sites, which result in excellent C-C coupling control in reduction of CO2. The best catalyst of Zn0.2:Co1@Cu yields paraffin at a rate of 325 μg·h−1 under −0.4 V versus saturated calomel electrode without H2 release. The apparent quantum efficiency of PEC cell is up to 1.95%. : Catalysis; Electrochemical Materials Science; Materials Design Subject Areas: Catalysis, Electrochemical Materials Science, Materials Designhttp://www.sciencedirect.com/science/article/pii/S2589004219305139
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Jinyuan Wang Yongji Guan Xiaogang Yu Youzhi Cao Jiazang Chen Yilin Wang Bin Hu Huanwang Jing
spellingShingle	Jinyuan Wang Yongji Guan Xiaogang Yu Youzhi Cao Jiazang Chen Yilin Wang Bin Hu Huanwang Jing Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions iScience
author_facet	Jinyuan Wang Yongji Guan Xiaogang Yu Youzhi Cao Jiazang Chen Yilin Wang Bin Hu Huanwang Jing
author_sort	Jinyuan Wang
title	Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions
title_short	Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions
title_full	Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions
title_fullStr	Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions
title_full_unstemmed	Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions
title_sort	photoelectrocatalytic reduction of co2 to paraffin using p-n heterojunctions
publisher	Elsevier
series	iScience
issn	2589-0042
publishDate	2020-01-01
description	Summary: Nowadays, photoelectrocatalytic (PEC) reduction of CO2 represents a very promising solution for storing solar energy in value-added chemicals, but so far it has been hampered by the lack of highly efficient catalyst of photocathode. Enlightened by the Calvin cycle of plants, here we show that a series of three-dimensional C/N-doped heterojunctions of Znx:Coy@Cu are successfully fabricated and applied as photocathodes in the PEC reduction of CO2 to generate paraffin product. These materials integrate semiconductors of p-type Co3O4 and n-type ZnO on Cu foam to construct fine heterojunctions with multiple active sites, which result in excellent C-C coupling control in reduction of CO2. The best catalyst of Zn0.2:Co1@Cu yields paraffin at a rate of 325 μg·h−1 under −0.4 V versus saturated calomel electrode without H2 release. The apparent quantum efficiency of PEC cell is up to 1.95%. : Catalysis; Electrochemical Materials Science; Materials Design Subject Areas: Catalysis, Electrochemical Materials Science, Materials Design
url	http://www.sciencedirect.com/science/article/pii/S2589004219305139
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Photoelectrocatalytic Reduction of CO2 to Paraffin Using p-n Heterojunctions

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