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Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content

The novelties in this paper are embodied in the fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase compositions. The carbon source-glucose plays an important role as the connecting bridge between the micelles in the solution, formin...

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Autores principales: Zhao, Chengcheng, Tan, Guoqiang, Yang, Wei, Xu, Chi, Liu, Ting, Su, Yuning, Ren, Huijun, Xia, Ao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5141511/
https://www.ncbi.nlm.nih.gov/pubmed/27924929
http://dx.doi.org/10.1038/srep38603
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author Zhao, Chengcheng
Tan, Guoqiang
Yang, Wei
Xu, Chi
Liu, Ting
Su, Yuning
Ren, Huijun
Xia, Ao
author_facet Zhao, Chengcheng
Tan, Guoqiang
Yang, Wei
Xu, Chi
Liu, Ting
Su, Yuning
Ren, Huijun
Xia, Ao
author_sort Zhao, Chengcheng
collection PubMed
description The novelties in this paper are embodied in the fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase compositions. The carbon source-glucose plays an important role as the connecting bridge between the micelles in the solution, forming interfacial C-O, C-O-Fe and O-Fe-C bonds through dehydration and polymerization reactions. Then the extra VO(3)(−) around the FeVO(4) colloidal particles can react with unstable Fe(OH)(3), resulting the phase transformation from α-Fe(2)O(3) (47.99–7.16%) into FeVO(4) (52.01–92.84%), promoting photocarriers’ generation capacities. After final carbonization, a part of C atoms enter into lattices of α-Fe(2)O(3) and FeVO(4), forming impurity levels and oxygen vacancies to increase effective light absorptions. Another part of C sources turn into interfacial carbon layers to bring fast charge transfer by decreasing the charge transition resistance (from 53.15 kΩ into 8.29 kΩ) and the surface recombination rate (from 64.07% into 7.59%). The results show that the bulk heterojunction with 90.29% FeVO(4) and 9.71% α-Fe(2)O(3) shows ideal light absorption, carriers’ transfer efficiency and available photocatalytic property. In general, the synergistic effect of optimized heterojunction structure, carbon replacing and the interface carbon layers are critical to develop great potential in stable and recoverable use.
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spelling pubmed-51415112016-12-16 Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content Zhao, Chengcheng Tan, Guoqiang Yang, Wei Xu, Chi Liu, Ting Su, Yuning Ren, Huijun Xia, Ao Sci Rep Article The novelties in this paper are embodied in the fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase compositions. The carbon source-glucose plays an important role as the connecting bridge between the micelles in the solution, forming interfacial C-O, C-O-Fe and O-Fe-C bonds through dehydration and polymerization reactions. Then the extra VO(3)(−) around the FeVO(4) colloidal particles can react with unstable Fe(OH)(3), resulting the phase transformation from α-Fe(2)O(3) (47.99–7.16%) into FeVO(4) (52.01–92.84%), promoting photocarriers’ generation capacities. After final carbonization, a part of C atoms enter into lattices of α-Fe(2)O(3) and FeVO(4), forming impurity levels and oxygen vacancies to increase effective light absorptions. Another part of C sources turn into interfacial carbon layers to bring fast charge transfer by decreasing the charge transition resistance (from 53.15 kΩ into 8.29 kΩ) and the surface recombination rate (from 64.07% into 7.59%). The results show that the bulk heterojunction with 90.29% FeVO(4) and 9.71% α-Fe(2)O(3) shows ideal light absorption, carriers’ transfer efficiency and available photocatalytic property. In general, the synergistic effect of optimized heterojunction structure, carbon replacing and the interface carbon layers are critical to develop great potential in stable and recoverable use. Nature Publishing Group 2016-12-07 /pmc/articles/PMC5141511/ /pubmed/27924929 http://dx.doi.org/10.1038/srep38603 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhao, Chengcheng
Tan, Guoqiang
Yang, Wei
Xu, Chi
Liu, Ting
Su, Yuning
Ren, Huijun
Xia, Ao
Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title_full Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title_fullStr Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title_full_unstemmed Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title_short Fast interfacial charge transfer in α-Fe(2)O(3−δ)C(δ)/FeVO(4−x+δ)C(x−δ)@C bulk heterojunctions with controllable phase content
title_sort fast interfacial charge transfer in α-fe(2)o(3−δ)c(δ)/fevo(4−x+δ)c(x−δ)@c bulk heterojunctions with controllable phase content
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5141511/
https://www.ncbi.nlm.nih.gov/pubmed/27924929
http://dx.doi.org/10.1038/srep38603
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