Construction of Z-scheme photocatalyst with p-n heterojunction of molecular semiconductors for enhanced photocatalytic water oxidation - Details

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Abstract：

Here,　the　donor-acceptor　organic　composites　of　n-type　perylene-3,4,9,10-tetracarboxylic　dianhydride　(PTCDA)　and　p-type　cobalt　phthalocyanine　(CoPc)　semiconductors　are　firstly　synthesized　and　optimized　for　photocatalytic　oxygen　evolution　(POE)　as　catalyst.　The　POE　rate　of　12.30　mmol·g−1·h−1　with　the　apparent　quantum　yield　of　4.00　%　at　475　nm　can　be　achieved　under　visible　light　(＞　420　nm),　as　compared　with　1.58　mmol.g−1.h−1　of　PTCDA.　Under　the　full　UV-Vis　light　(＞　320　nm),　the　rate　is　up　to　17.65　mmol·g−1·h−1.　The　systematical　experiments　clearly　reveal　the　generation　of　dual-channel　energy　transfer　of　fluorescence　resonance　from　CoPc　to　PTCDA　and　electron　transfer　from　oxygen　groups　in　PTCDA　to　Co　atom　in　CoPc　under　UV-Vis　light　irradiation.　Consequently,　the　formation　of　Z-scheme　p/n　heterojunction　in　CoPc/PTCDA　composite　greatly　enhances　the　POE　performance　due　to　the　lifetime　increase　of　metal-ligand　charge　transfer　exciton　in　CoPc　(44.83　vs.　2.95　ps)　and　perylene　cationic　exciton　(20.13　vs.　2.13　ps).　©　2023　Elsevier　B.V.

Keyword：

Cobalt phthalocyanine Molecular semiconductor Perylene-3,4,9,10-tetracarboxylic dianhydride Photocatalytic water oxidation P/N type heterojunction Z-Scheme heterojunction

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[ 1 ] [Li J.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 2 ] [Li J.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 3 ] [Li J.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China
[ 4 ] [Li J.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Wang S.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 6 ] [Wang S.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 7 ] [Wang S.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China
[ 8 ] [Wang S.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 9 ] [Li R.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 10 ] [Zhang B.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 11 ] [Zhang B.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 12 ] [Zhang B.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China
[ 13 ] [Zhang B.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 14 ] [Xu X.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 15 ] [Xu X.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 16 ] [Xu X.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China
[ 17 ] [Wang Z.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 18 ] [Wang Z.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 19 ] [Wang Z.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China
[ 20 ] [Wang Z.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 21 ] [Kang L.]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
[ 22 ] [Kang L.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 23 ] [Kang L.]University Chinese Academy of Science, Fujian College, Fuzhou, 350002, China

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2024

Volume： 342

2 0 . 3 0 0

JCR@2023

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