Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water

Abstract The tetragonal phase Nb2O5 (T‐Nb2O5) nanobelts with preferentially exposed the (010) facet have been successfully prepared for the first time by insitu topological reaction using the KNb3O8 nanobelts as the precursor. Meanwhile, the transformation mechanism of the crystal structure and morp...

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Autores principales:	Puhong Wen, Xiaowen Jiang, Qian He, Dengwei Hu, Lijun Ren, Weixing Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	Ag/T‐Nb2O5 nanobelts crystal structure evolution photoelectrochemical properties topological hydrothermal synthesis Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/3666f4ce86984a73b2d22806dc326604
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spelling	oai:doaj.org-article:3666f4ce86984a73b2d22806dc3266042021-11-10T13:30:46ZTopological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water2688-401110.1002/nano.202100082https://doaj.org/article/3666f4ce86984a73b2d22806dc3266042021-11-01T00:00:00Zhttps://doi.org/10.1002/nano.202100082https://doaj.org/toc/2688-4011Abstract The tetragonal phase Nb2O5 (T‐Nb2O5) nanobelts with preferentially exposed the (010) facet have been successfully prepared for the first time by insitu topological reaction using the KNb3O8 nanobelts as the precursor. Meanwhile, the transformation mechanism of the crystal structure and morphology from the layered KNb3O8 nanobelt to the T‐Nb2O5 nanobelt was revealed in detail by using XRD, FE‐SEM, TEM, HRTEM, SAED, UV‐vis DRS, EDX, XPS, and Raman spectra. In addition, Ag deposited T‐Nb2O5 (Ag/T‐Nb2O5) nanobelts were prepared by photo‐reduction reaction. The photoelectrochemical properties of the T‐Nb2O5 nanobelts and Ag/T‐Nb2O5 nanobelts as a photocatalyst were evaluated by splitting water under simulated sunlight. The results show that the photocurrent density generated by the prepared Ag/T‐Nb2O5 sample is 48.1 µA∙cm−2, which is 2.3 times that of the T‐Nb2O5 sample, and the prepared tetragonal phase T‐Nb2O5 nanobelts produce a photocurrent value 1.5 times that of the contrast orthogonal phase O‐Nb2O5 nanosheets. It indicates that the (010) facet of the tetragonal phase Nb2O5 is one of the highest photocatalytic active surfaces, and the visible light utilization efficiency of the T‐Nb2O5 nanobelt with Ag deposited on the surface has been significantly improved, which implies that it has potential applications in the field of photocatalysis.Puhong WenXiaowen JiangQian HeDengwei HuLijun RenWeixing ZhaoWiley-VCHarticleAg/T‐Nb2O5 nanobeltscrystal structure evolutionphotoelectrochemical propertiestopological hydrothermal synthesisMaterials of engineering and construction. Mechanics of materialsTA401-492ENNano Select, Vol 2, Iss 11, Pp 2135-2147 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ag/T‐Nb2O5 nanobelts crystal structure evolution photoelectrochemical properties topological hydrothermal synthesis Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Ag/T‐Nb2O5 nanobelts crystal structure evolution photoelectrochemical properties topological hydrothermal synthesis Materials of engineering and construction. Mechanics of materials TA401-492 Puhong Wen Xiaowen Jiang Qian He Dengwei Hu Lijun Ren Weixing Zhao Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
description	Abstract The tetragonal phase Nb2O5 (T‐Nb2O5) nanobelts with preferentially exposed the (010) facet have been successfully prepared for the first time by insitu topological reaction using the KNb3O8 nanobelts as the precursor. Meanwhile, the transformation mechanism of the crystal structure and morphology from the layered KNb3O8 nanobelt to the T‐Nb2O5 nanobelt was revealed in detail by using XRD, FE‐SEM, TEM, HRTEM, SAED, UV‐vis DRS, EDX, XPS, and Raman spectra. In addition, Ag deposited T‐Nb2O5 (Ag/T‐Nb2O5) nanobelts were prepared by photo‐reduction reaction. The photoelectrochemical properties of the T‐Nb2O5 nanobelts and Ag/T‐Nb2O5 nanobelts as a photocatalyst were evaluated by splitting water under simulated sunlight. The results show that the photocurrent density generated by the prepared Ag/T‐Nb2O5 sample is 48.1 µA∙cm−2, which is 2.3 times that of the T‐Nb2O5 sample, and the prepared tetragonal phase T‐Nb2O5 nanobelts produce a photocurrent value 1.5 times that of the contrast orthogonal phase O‐Nb2O5 nanosheets. It indicates that the (010) facet of the tetragonal phase Nb2O5 is one of the highest photocatalytic active surfaces, and the visible light utilization efficiency of the T‐Nb2O5 nanobelt with Ag deposited on the surface has been significantly improved, which implies that it has potential applications in the field of photocatalysis.
format	article
author	Puhong Wen Xiaowen Jiang Qian He Dengwei Hu Lijun Ren Weixing Zhao
author_facet	Puhong Wen Xiaowen Jiang Qian He Dengwei Hu Lijun Ren Weixing Zhao
author_sort	Puhong Wen
title	Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
title_short	Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
title_full	Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
title_fullStr	Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
title_full_unstemmed	Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
title_sort	topological synthesis of crystalline ag/t‐nb2o5 nanobelts with enhanced solar photoelectrochemical properties for splitting water
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/3666f4ce86984a73b2d22806dc326604
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Topological synthesis of crystalline Ag/T‐Nb2O5 nanobelts with enhanced solar photoelectrochemical properties for splitting water

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