Journal ArticleDOI
Solution Combustion Synthesis of Nano ZnWO4 Photocatalyst
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ZnWO4 nanopowder photocatalyst has been successfully prepared by a simple solution combustion synthesis using Zn(NO3)2.6H2O as oxidizer, sucrose as reducing agent and peroxo tungstic acid as tungsten source.Abstract:
ZnWO4 nanopowder photocatalyst has been successfully prepared by a simple solution combustion synthesis using Zn(NO3)2.6H2O as oxidizer, sucrose as reducing agent and peroxo tungstic acid as tungsten source. The as prepared nanopowder was characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and photoluminescence (PL) techniques. The PXRD analysis revealed the formation of pure ZnWO4 monoclinic phase. The crystallite sizes calculated using Scherrer equation are in the range 20–30 nm. SEM images exhibit highly porous nature of the product. BET surface area analysis of ZnWO4 nanopowder shows large specific surface area of 19.20 m2 .g–1. Photocatalytic activities of as synthesized powder were investigated by the degradation of methylene blue (MB) solution under UV light irradiation.read more
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Solvothermal synthesis, characterization and photocatalytic performance of Zn-rich ZnWO 4 nanocrystals
TL;DR: Zhang et al. as discussed by the authors focused on the surface composition disorder, its origin and relevance to photoluminescent and photocatalytic properties of ZnWO 4 nanocrystals, in which formic acid was employed for both the nonstoichiometry and kinetic size control.
Journal ArticleDOI
Bi0 nanoparticle loaded on Bi3+-doped ZnWO4 nanorods with oxygen vacancies for enhanced photocatalytic NO removal
Shiping Li,Libin Chang,Jianhong Peng,Jianzhi Gao,Jiangbo Lu,Fuchun Zhang,Gangqiang Zhu,Mirabbos Hojamberdiev +7 more
TL;DR: In this paper, a two-step hydrothermal-solvothermal method was used for the preparation of Bi0 nanoparticles-loaded on Bi3+-doped ZnWO4 (Bi/ZBWO) nanorods.
Journal ArticleDOI
Citric acid assisted synthesis of manganese tungstate nanoparticles for simultaneous electrochemical sensing of heavy metal ions
H. Eranjaneya,Prashanth Shivappa Adarakatti,Ashoka Siddaramanna,Pandurangappa Malingappa,Gujjarahalli Thimmanna Chandrappa +4 more
TL;DR: In this article, a manganese tungstate nanoparticles (NPs) were successfully synthesized via a simple and cost effective citric acid assisted solution combustion method, and the synthesized NPs were found to be an excellent electrode modifier for the simultaneous detection of Pb(II, Cd(II), Cu(II) ions at nanomolar (nM) concentration.
Journal ArticleDOI
Solution Combustion Synthesis of Complex Oxide Semiconductors
Mohammad Kabir Hossain,Egon Kecsenovity,András Varga,M. Molnár,Csaba Janáky,Krishnan Rajeshwar +5 more
TL;DR: In this article, the role of combustion synthesis in the development of ternary and quaternary metal oxide semiconductors and materials derived from these compounds such as composites, solid solutions, and doped samples is discussed in terms of their applicability in the generation of solar fuels from water splitting and CO2 reduction.
Journal ArticleDOI
Photocatalytic degradation of methylene blue dye using ZnWO4 catalyst prepared by a simple co-precipitation technique
TL;DR: In this paper, a simple co-precipitation technique without the addition of any templates and complexing agent was used to synthesize zinc tungstate (ZnWO4) nanoparticles.
References
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Journal ArticleDOI
Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion
TL;DR: This review summarizes the synthesis of various metal oxide nanomaterials and their applications for energy conversion and storage, including lithium-ion batteries, supercapacitors, hydrogen and methane production, fuel cells and solar cells, and some novel concepts such as reverse support combustion, self-combustion of ionic liquids, and creation of oxygen vacancies are presented.
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Synergetic degradation of rhodamine B at a porous ZnWO4 film electrode by combined electro-oxidation and photocatalysis.
Xu Zhao,Yongfa Zhu +1 more
TL;DR: More active species could be formed through new reactive routines in the photoelectrocatalytic (PEC) process because of the potential for synergetic degradation of rhodamine B through decomposition of the conjugated chromophore structure with slight occurrence of de-ethylation.
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Photocatalytic activities of a novel ZnWO4 catalyst prepared by a hydrothermal process
TL;DR: ZnWO 4 has been successfully synthesized by a hydrothermal crystallization process as discussed by the authors, and it exhibited relatively high photochemical activity for the decomposition of rhodamine-B, and showed better activity for degradation of formaldehyde than that of TiO 2 (P-25).
Journal ArticleDOI
Synthesis, characterization and photocatalytic properties of nanosized Bi2WO6, PbWO4 and ZnWO4 catalysts
TL;DR: The physical and photophysical properties of the catalysts were characterized by X-ray diffractometry, Brunauer-Emmet-Teller surface area and porosity measurements, transmission electron microscopy, Raman spectra, and diffused reflectance spectroscopy as mentioned in this paper.
Journal ArticleDOI
ZnWO4 photocatalyst with high activity for degradation of organic contaminants
TL;DR: In this article, the photocatalytic activity of ZnWO 4 nanoparticle catalysts was investigated and it was found that ZnwO 4 catalysts exhibited a high photocatalysis activity, not only in the decomposition of formaldehyde in gaseous, but also in the degradation of RhB in water.