One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation

Bi 2 WO 6 with different Bi 3+ ion concentrations (0-30 mol%) is incorporated with the ZnWO 4 photocatalyst to improve the photocatalytic efficiency by forming a ZnWO 4 /Bi 2 WO 6 composite photocatalyst with hierarchical heterostructure via a one-step hydrothermal method. X-ray diffraction and Rama...

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Publicado:	2013
Materias:	Bismuth tungstate Composite photocatalyst Heterostructure Hydrothermal synthesis UV light irradiation Zinc tungstate Bismuth tungstates Composite photocatalysts Degradation of acetaldehyde Photocatalytic efficiency Photocatalytic performance Transmission electron microscopy observation UV-light irradiation Acetaldehyde Complexation Heterojunctions Irradiation Photocatalysis Raman spectroscopy Scanning electron microscopy Separation Transmission electron microscopy X ray diffraction Photocatalysts
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0926860X_v457_n_p12_Hojamberdiev http://hdl.handle.net/20.500.12110/paper_0926860X_v457_n_p12_Hojamberdiev
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0926860X_v457_n_p12_Hojamberdiev
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spelling	paper:paper_0926860X_v457_n_p12_Hojamberdiev2023-06-08T15:51:42Z One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation Bismuth tungstate Composite photocatalyst Heterostructure Hydrothermal synthesis UV light irradiation Zinc tungstate Bismuth tungstates Composite photocatalysts Degradation of acetaldehyde Photocatalytic efficiency Photocatalytic performance Transmission electron microscopy observation UV-light irradiation Zinc tungstate Acetaldehyde Complexation Heterojunctions Hydrothermal synthesis Irradiation Photocatalysis Raman spectroscopy Scanning electron microscopy Separation Transmission electron microscopy X ray diffraction Photocatalysts Bi 2 WO 6 with different Bi 3+ ion concentrations (0-30 mol%) is incorporated with the ZnWO 4 photocatalyst to improve the photocatalytic efficiency by forming a ZnWO 4 /Bi 2 WO 6 composite photocatalyst with hierarchical heterostructure via a one-step hydrothermal method. X-ray diffraction and Raman spectroscopy analyses confirm the presence of ZnWO 4 and Bi 2 WO 6 as main phases in the composite photocatalyst. Scanning electron microscopy and transmission electron microscopy observations reveal that the rice- and plate-like Bi 2 WO 6 nanoparticles were either separate or attached to the surface of quasi-spherical ZnWO 4 particles. A gradual increase in the Bi 2 WO 6 content of the composite photocatalyst results in a monotonic shift of the absorption edge from ca. 355 nm to longer wavelengths up to ca. 450 nm. The photocatalytic performance of the ZnWO 4 /Bi 2 WO 6 composite photocatalyst was evaluated by investigating the degradation of gaseous acetaldehyde (AcH) under UV light irradiation. Only the composite photocatalyst synthesized with 30 mol% Bi 3+ exhibits higher photocatalytic activity under UV light irradiation compared with both individual ZnWO 4 and Bi 2 WO 6 , and with a mechanically mixed ZnWO 4 /Bi 2 WO 6 composite photocatalyst. The enhanced photocatalytic activity is attributed to the n-n isotype junction formed between the two semiconductors and the charge separation of each semiconductor. © 2013 Elsevier B.V. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0926860X_v457_n_p12_Hojamberdiev http://hdl.handle.net/20.500.12110/paper_0926860X_v457_n_p12_Hojamberdiev
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Bismuth tungstate Composite photocatalyst Heterostructure Hydrothermal synthesis UV light irradiation Zinc tungstate Bismuth tungstates Composite photocatalysts Degradation of acetaldehyde Photocatalytic efficiency Photocatalytic performance Transmission electron microscopy observation UV-light irradiation Zinc tungstate Acetaldehyde Complexation Heterojunctions Hydrothermal synthesis Irradiation Photocatalysis Raman spectroscopy Scanning electron microscopy Separation Transmission electron microscopy X ray diffraction Photocatalysts
spellingShingle	Bismuth tungstate Composite photocatalyst Heterostructure Hydrothermal synthesis UV light irradiation Zinc tungstate Bismuth tungstates Composite photocatalysts Degradation of acetaldehyde Photocatalytic efficiency Photocatalytic performance Transmission electron microscopy observation UV-light irradiation Zinc tungstate Acetaldehyde Complexation Heterojunctions Hydrothermal synthesis Irradiation Photocatalysis Raman spectroscopy Scanning electron microscopy Separation Transmission electron microscopy X ray diffraction Photocatalysts One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
topic_facet	Bismuth tungstate Composite photocatalyst Heterostructure Hydrothermal synthesis UV light irradiation Zinc tungstate Bismuth tungstates Composite photocatalysts Degradation of acetaldehyde Photocatalytic efficiency Photocatalytic performance Transmission electron microscopy observation UV-light irradiation Zinc tungstate Acetaldehyde Complexation Heterojunctions Hydrothermal synthesis Irradiation Photocatalysis Raman spectroscopy Scanning electron microscopy Separation Transmission electron microscopy X ray diffraction Photocatalysts
description	Bi 2 WO 6 with different Bi 3+ ion concentrations (0-30 mol%) is incorporated with the ZnWO 4 photocatalyst to improve the photocatalytic efficiency by forming a ZnWO 4 /Bi 2 WO 6 composite photocatalyst with hierarchical heterostructure via a one-step hydrothermal method. X-ray diffraction and Raman spectroscopy analyses confirm the presence of ZnWO 4 and Bi 2 WO 6 as main phases in the composite photocatalyst. Scanning electron microscopy and transmission electron microscopy observations reveal that the rice- and plate-like Bi 2 WO 6 nanoparticles were either separate or attached to the surface of quasi-spherical ZnWO 4 particles. A gradual increase in the Bi 2 WO 6 content of the composite photocatalyst results in a monotonic shift of the absorption edge from ca. 355 nm to longer wavelengths up to ca. 450 nm. The photocatalytic performance of the ZnWO 4 /Bi 2 WO 6 composite photocatalyst was evaluated by investigating the degradation of gaseous acetaldehyde (AcH) under UV light irradiation. Only the composite photocatalyst synthesized with 30 mol% Bi 3+ exhibits higher photocatalytic activity under UV light irradiation compared with both individual ZnWO 4 and Bi 2 WO 6 , and with a mechanically mixed ZnWO 4 /Bi 2 WO 6 composite photocatalyst. The enhanced photocatalytic activity is attributed to the n-n isotype junction formed between the two semiconductors and the charge separation of each semiconductor. © 2013 Elsevier B.V.
title	One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
title_short	One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
title_full	One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
title_fullStr	One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
title_full_unstemmed	One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation
title_sort	one-step hydrothermal synthesis and photocatalytic performance of znwo 4 /bi 2 wo 6 composite photocatalysts for efficient degradation of acetaldehyde under uv light irradiation
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0926860X_v457_n_p12_Hojamberdiev http://hdl.handle.net/20.500.12110/paper_0926860X_v457_n_p12_Hojamberdiev
_version_	1768544647033913344

One-step hydrothermal synthesis and photocatalytic performance of ZnWO 4 /Bi 2 WO 6 composite photocatalysts for efficient degradation of acetaldehyde under UV light irradiation

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