A novel a-Fe2O3 photoanode with multilayered In2O3/Co-Mn nanostructure for efficient photoelectrochemical water splitting - Details

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Abstract：

Hematite　(a-Fe2O3)　is　considered　one　of　the　most　promising　materials　for　PEC　water　splitting　under　solar　light.　However,　the　drawbacks　of　lower　charge　transfer　efficiency　and　slow　oxygen　evolution　reaction　(OER)　kinetics　seriously　limited　the　practical　application　of　a-Fe2O3　photoanodes.　In　this　work,　a　multilayer　structure　modified　a-Fe2O3　photoanode　is　proposed.　Firstly,　the　In2O3　nanolayers　were　loaded　onto　the　surface　of　a-Fe2O3　nanorods,　significantly　increasing　the　photoelectrochemical　(PEC)　water　oxidation　activity.　The　heterojunction　form　by　the　In2O3　passivation　layer　with　a-Fe2O3　effectively　promotes　charge　separation.　Next,　an　electrodeposition　method　deposited　a　nanosheet　combining　ultrathin　non-crystalline　Co(OH)x　and　Mn3O4　nanocrystals　(Co-Mn)　on　the　a-Fe2O3　thin　film.　As　an　efficient　co-catalyst,　the　Co-Mn　nanosheets　assisted　the　performance　of　a-Fe2O3　PEC　water　oxidation.　The　optimized　a-Fe2O3-In2O3-Co(OH)x-Mn3O4　photoanode　produces　a　high　photocurrent　density　of　6.5　mA/cm2　at　1.23　V　(vs.　RHE),　a　maximum　IPCE　of　57.9%　at　400　nm　can　reach.(c)　2023　Published　by　Elsevier　Ltd　on　behalf　of　Hydrogen　Energy　Publications　LLC.

Keyword：

Co-Mn nanosheet coating Photoelectrochemical water splitting

Community：

[ 1 ] [Ji, Ming-Hao]Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China
[ 2 ] [Chen, Yan-Xin]Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China
[ 3 ] [Lu, Can-Zhong]Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China
[ 4 ] [Ji, Ming-Hao]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 5 ] [Chen, Yan-Xin]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 6 ] [Chen, Rui]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 7 ] [Li, Ke-Xian]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 8 ] [Zhao, Hai-Peng]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 9 ] [Shi, Hao-Yan]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 10 ] [Wang, Hai-Long]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 11 ] [Jiang, Xia]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 12 ] [Lu, Can-Zhong]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
[ 13 ] [Ji, Ming-Hao]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 14 ] [Chen, Yan-Xin]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 15 ] [Chen, Rui]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 16 ] [Li, Ke-Xian]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 17 ] [Zhao, Hai-Peng]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 18 ] [Shi, Hao-Yan]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 19 ] [Wang, Hai-Long]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 20 ] [Jiang, Xia]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 21 ] [Lu, Can-Zhong]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China
[ 22 ] [Chen, Yan-Xin]Innovat Lab Optoelect Informat China, Fujian Sci & Technol, Fuzhou 350100, Peoples R China
[ 23 ] [Lu, Can-Zhong]Innovat Lab Optoelect Informat China, Fujian Sci & Technol, Fuzhou 350100, Peoples R China
[ 24 ] [Chen, Yan-Xin]Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350108, Peoples R China
[ 25 ] [Li, Ke-Xian]Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350108, Peoples R China
[ 26 ] [Lu, Can-Zhong]Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350108, Peoples R China

Reprint 's Address：

[Chen, Yan-Xin]Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China;;[Lu, Can-Zhong]Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China;;[Chen, Yan-Xin]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China;;[Lu, Can-Zhong]Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China;;[Chen, Yan-Xin]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China;;[Lu, Can-Zhong]Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China;;[Chen, Yan-Xin]Innovat Lab Optoelect Informat China, Fujian Sci & Technol, Fuzhou 350100, Peoples R China;;[Lu, Can-Zhong]Innovat Lab Optoelect Informat China, Fujian Sci & Technol, Fuzhou 350100, Peoples R China;;[Chen, Yan-Xin]Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350108, Peoples R China;;[Lu, Can-Zhong]Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350108, Peoples R China;;

Email：

yanxinchen@fjirsm.ac.cn |
czlu@fjirsm.ac.cn

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