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g-C3N4@alpha-Fe2O3/C Photocatalysts: Synergistically Intensified Charge Generation and Charge Transfer for NADH Regeneration
Wu, Yizhou1,3; Ward-Bond, Jesse1,4; Li, Donglin1; Zhang, Shaohua1,3; Shi, Jiafu2,3,5; Jiang, Zhongyi1,3,5
2018-07-01
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume8Issue:7Pages:5664-5674
Abstract

Graphitic carbon nitride (g-C3N4) is an emergent metal-free photocatalyst because of its band position, natural abundance, and facile preparation. Synergetic intensification of charge generation and charge transfer of g-C3N4 to increase solar-to-chemical efficiency remains a hot yet challenging issue. Herein, a nanoshell with two moieties of alpha-Fe2O3 and carbon (C) is in situ formed on the surface of a g-C3N4 core through calcination of Fe3+/polyphenol-coated melamine, thus acquiring g-C3N4@alpha-Fe2O3/C core@shell photocatalysts. The alpha-Fe2O3 moiety acts as an additional photosensitizer, offering more photogenerated electrons, whereas the C moiety bridges a "highway" to facilitate the electron transfer either from alpha-Fe2O3 moiety to g-C3N4 or from g-C3N4 to C moiety. By tuning the proportion of these two moieties in the nanoshell, a photocurrent density of 3.26 times higher than pristine g-C3N4 is obtained. When utilized for photocatalytic regeneration of reduced nicotinamide adenine dinucleotide (NADH, a dominant cofactor in biohydrogenation reaction), g-C3N4@alpha-Fe2O3/C exhibits an equilibrium NADH yield of 76.3% with an initial reaction rate (r) of 7.7 mmol h(-1) g(-1), among the highest r for photocatalytic NADH regeneration ever reported. Manipulating the coupling between charge generation and charge transfer may offer a facile, generic strategy to improve the catalytic efficiency of a broad range of photocatalysts other than g-C3N4.

KeywordCharge Generation Charge Transfer Graphitic Carbon Nitride Photocatalysis Nadh Regeneration
DOI10.1021/acscatal.8b00070
Language英语
WOS KeywordGraphitic Carbon Nitride ; Visible-light Photocatalysts ; Hydrogen Evolution ; Environmental Remediation ; Water ; Reduction ; Efficiency ; Semiconductors ; System ; Co2
Funding ProjectNational Natural Science Foundation of China[21621004] ; National Natural Science Foundation of China[21776213] ; National Natural Science Foundation of China[91534126] ; Tianjin Research Program of Application Foundation and Advanced Technology[15JCQNJC10000] ; National Key Laboratory of Biochemical Engineering[2015KF-03] ; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development[Y707s61001] ; Program of Introducing Talents of Discipline to Universities[B06006]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Natural Science Foundation of China ; Tianjin Research Program of Application Foundation and Advanced Technology ; National Key Laboratory of Biochemical Engineering ; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development ; Program of Introducing Talents of Discipline to Universities
WOS IDWOS:000438475100002
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25480
Collection中国科学院过程工程研究所
Corresponding AuthorShi, Jiafu; Jiang, Zhongyi
Affiliation1.Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China
2.Tianjin Univ, Sch Environm Sci & Engn, Tianjin Engn Ctr Biomass Derived Gas & Oil, Tianjin 300072, Peoples R China
3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
4.Univ Ottawa, Dept Chem & Biol Engn, 161 Louis Pasteur Private, Ottawa, ON K1N 6N5, Canada
5.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yizhou,Ward-Bond, Jesse,Li, Donglin,et al. g-C3N4@alpha-Fe2O3/C Photocatalysts: Synergistically Intensified Charge Generation and Charge Transfer for NADH Regeneration[J]. ACS CATALYSIS,2018,8(7):5664-5674.
APA Wu, Yizhou,Ward-Bond, Jesse,Li, Donglin,Zhang, Shaohua,Shi, Jiafu,&Jiang, Zhongyi.(2018).g-C3N4@alpha-Fe2O3/C Photocatalysts: Synergistically Intensified Charge Generation and Charge Transfer for NADH Regeneration.ACS CATALYSIS,8(7),5664-5674.
MLA Wu, Yizhou,et al."g-C3N4@alpha-Fe2O3/C Photocatalysts: Synergistically Intensified Charge Generation and Charge Transfer for NADH Regeneration".ACS CATALYSIS 8.7(2018):5664-5674.
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