Germanium and iron double-substituted ZnGa2O4 solid-solution photocatalysts with modulated band structure for boosting photocatalytic CO2 reduction with H2O - Details

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Abstract：

The　conversion　of　CO2　into　renewable　fuels　by　artificial　photosynthesis　is　an　attractive　solution　for　storing　solar　energy　in　the　form　of　chemical　fuel.　Herein,　we　presented　a　general　molten-salt　route　to　synthesize　spinel　germanium　and　iron　double-substituted　ZnGa2O4　solid　solutions.　Introducing　ZnFe2O4　and　Zn2GeO4　into　ZnGa2O4　can　effectively　expand　the　light-harvesting　wavelength　range　to　improve　the　ability　of　photocatalyst　in　CO2　reduction　and　H2O　oxidation.　The　solid　solutions　provide　a　larger　effective　mass　of　holes　compared　with　electrons　through　the　introduction　of　Fe3d,　Ge4s　and　Ge4p　orbitals　according　to　DFT　analysis.　This　leads　to　a　great　difference　in　the　mobility　between　the　electrons　and　holes　to　lessen　the　electron–hole　recombination　rate,　and　enhance　the　conversion　of　CO2　and　H2O　in　kinetics.　This　approach　is　developed　to　achieving　smaller　bandgap　values　and　a　closer　bracketing　of　the　CO2/reduced-H2O/oxidized　redox　couples　to　drive　the　overall　conversion　of　CO2　and　H2O.　©　2019　Elsevier　B.V.

Keyword：

CO2 conversion; Germanium and iron double-substituted ZnGa2O4; Molten salts; Photosynthesis; Ternary solid solution

Community：

[ 1 ] [Liang, J.]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
[ 2 ] [Chai, Y.]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
[ 3 ] [Li, L.]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
[ 4 ] [Li, D.]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
[ 5 ] [Shen, J.]College of Materials Science and Engineering, State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry, Fuzhou University, Fujian, 350002, China
[ 6 ] [Zhang, Y.]College of Materials Science and Engineering, State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry, Fuzhou University, Fujian, 350002, China
[ 7 ] [Wang, X.]College of Materials Science and Engineering, State Key Laboratory of Photocatalysis on Energy and Environment, Department of Chemistry, Fuzhou University, Fujian, 350002, China

Reprint 's Address：

[Liang, J.]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia UniversityChina

Email：

Junliang@nxu.edu.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2020

Volume： 265

1 9 . 5 0 3

JCR@2020

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 40

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

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