Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes

Abstract It is highly desired to improve the photoelectrochemical (PEC) performance of nanosized WO3 by artificially modulating the photogenerated electrons and holes simultaneously. Herein, WO3 nanoplates have been successfully prepared by a simple one-pot two-phase separated hydrolysis-solvotherma...

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Autores principales:	Liqun Sun, Yuying Wang, Fazal Raziq, Yang Qu, Linlu Bai, Liqiang Jing
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/00bd0e737e70408593f4ea455e818cf1
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spelling	oai:doaj.org-article:00bd0e737e70408593f4ea455e818cf12021-12-02T15:05:42ZEnhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes10.1038/s41598-017-01300-72045-2322https://doaj.org/article/00bd0e737e70408593f4ea455e818cf12017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01300-7https://doaj.org/toc/2045-2322Abstract It is highly desired to improve the photoelectrochemical (PEC) performance of nanosized WO3 by artificially modulating the photogenerated electrons and holes simultaneously. Herein, WO3 nanoplates have been successfully prepared by a simple one-pot two-phase separated hydrolysis-solvothermal method, and then co-modified with RGO and phosphate acid successively by wet chemical processes. Subsequently, the as-prepared WO3-based nanoplates were immobilized on the conductive glasses to explore the PEC activities for both water oxidation to evolve O2 and phenol degradation. It is clearly demonstrated that the co-modified WO3 nanoplates exhibit significantly improved PEC activities compared with pristine WO3, especially for that with the amount-optimized modifiers by ca. 6-time enhancement. Mainly based on the evaluated hydroxyl radical amounts produced and the electrochemical impedance spectra, it is suggested that the improved PEC activities are attributed to the greatly enhanced photogenerated charge separation after chemically modification with RGO and phosphate groups to WO3, respectively by transferring electrons as the collectors and trapping holes via the formed negative field after phosphate disassociation. This work provides a feasible synthetic strategy to improve the photoactivities of nanosized WO3 for energy production and environmental remediation.Liqun SunYuying WangFazal RaziqYang QuLinlu BaiLiqiang JingNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Liqun Sun Yuying Wang Fazal Raziq Yang Qu Linlu Bai Liqiang Jing Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
description	Abstract It is highly desired to improve the photoelectrochemical (PEC) performance of nanosized WO3 by artificially modulating the photogenerated electrons and holes simultaneously. Herein, WO3 nanoplates have been successfully prepared by a simple one-pot two-phase separated hydrolysis-solvothermal method, and then co-modified with RGO and phosphate acid successively by wet chemical processes. Subsequently, the as-prepared WO3-based nanoplates were immobilized on the conductive glasses to explore the PEC activities for both water oxidation to evolve O2 and phenol degradation. It is clearly demonstrated that the co-modified WO3 nanoplates exhibit significantly improved PEC activities compared with pristine WO3, especially for that with the amount-optimized modifiers by ca. 6-time enhancement. Mainly based on the evaluated hydroxyl radical amounts produced and the electrochemical impedance spectra, it is suggested that the improved PEC activities are attributed to the greatly enhanced photogenerated charge separation after chemically modification with RGO and phosphate groups to WO3, respectively by transferring electrons as the collectors and trapping holes via the formed negative field after phosphate disassociation. This work provides a feasible synthetic strategy to improve the photoactivities of nanosized WO3 for energy production and environmental remediation.
format	article
author	Liqun Sun Yuying Wang Fazal Raziq Yang Qu Linlu Bai Liqiang Jing
author_facet	Liqun Sun Yuying Wang Fazal Raziq Yang Qu Linlu Bai Liqiang Jing
author_sort	Liqun Sun
title	Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
title_short	Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
title_full	Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
title_fullStr	Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
title_full_unstemmed	Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes
title_sort	enhanced photoelectrochemical activities for water oxidation and phenol degradation on wo3 nanoplates by transferring electrons and trapping holes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/00bd0e737e70408593f4ea455e818cf1
work_keys_str_mv	AT liqunsun enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes AT yuyingwang enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes AT fazalraziq enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes AT yangqu enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes AT linlubai enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes AT liqiangjing enhancedphotoelectrochemicalactivitiesforwateroxidationandphenoldegradationonwo3nanoplatesbytransferringelectronsandtrappingholes
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Enhanced photoelectrochemical activities for water oxidation and phenol degradation on WO3 nanoplates by transferring electrons and trapping holes

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