Mechanochemical synthesis of nanostructured BiVO4 and investigations of related features

Venkatesan, R.; Velumani, S.; Kassiba, A.

doi:10.1016/j.matchemphys.2012.05.068

Cited by 57 publications

(32 citation statements)

References 30 publications

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“…TiO 2 shows relatively high reactivity and chemical stability under UV light, whose energy exceeds the band gap of 3.3 eV. [5][6][7][8][9] However, the resulting photocatalysts are decient in either activity or stability. 1 and 3) and mixed oxides with p-n junction characteristics.…”

Section: Introductionmentioning

confidence: 99%

Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process

et al. 2015

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Nickel titanate (NiTiO 3 ) thin films were grown by a radio frequency magnetron co-sputtering process using metal (Ni and Ti) targets on fused quartz substrates at a substrate temperature of 400 C. Annealing of asdeposited (amorphous) films was performed at 1100 C for 2 hours to realize a stable crystalline phase. The effect of the Ti target power (200 and 250 W) and nitrogen doping on the structural, morphological and optical properties of post-annealed NiTiO 3 thin films were investigated besides photocatalytic activity under visible light irradiation. X-ray diffraction measurement on the films revealed a pure ilmenite phase at 250 W Ti power. Preferential orientation changed from [104] to [110] as Ti power increased from 200 to 250 W. Raman studies on NiTiO 3 thin films showed almost all the active modes (5A g + 5E g ) of a crystalline structure. Two different microstructures were observed by scanning electron microscopy, films showed rounded (250 nm) grains at 200 W Ti target power while facet forms (500 nm) develop in the films deposited at 250 W. Chemical bonding and valence states of the involved ions such as Ni 2p, Ti 2p and O 1s were investigated by X-ray photoelectron spectroscopy. Nitrogen doping modifies the rms roughness from 12 nm to 17 nm as demonstrated on 200 W grown films and contributes also to modify the indirect optical band gap from 2.50 to 2.43 eV in films obtained at 250 W Ti target power. As a crucial role of nitrogen doping, photocatalytic activity in a broad visible light range was observed with a good efficiency for the degradation of methylene blue by nitrogen doped NiTiO 3 thin films.

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Section: Introductionmentioning

confidence: 99%

Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process

et al. 2015

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“…The search for an efficient visible light driven photocatalyst has led to an upsurge in the field of photocatalysis. Recently, BiVO 4 as a visible light driven photocatalyst has received significant attention for water splitting and water detoxification applications [3][4][5]. Monoclinic scheelite has been considered as more efficient photocatalyst due to its narrow band gap (ca, 2.4-2.5 eV) amongst other phases of BiVO 4 such as tetragonal scheelite and tetragonal zircon [6,7].…”

Section: Introductionmentioning

confidence: 99%

Structural, electronic and optical features of molybdenum-doped bismuth vanadium oxide

Merupo

Velumani

Oza

et al. 2015

Materials Science in Semiconductor Processing

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“…Additionally, its durability and performance stability are remarkable. Other applications of this semiconductor are in fields of water treatment and paint industries (Acar & Dincer, 2016;Mills & Le Hunte, 1997;Venkatesan, Velumani, & Kassiba, 2012).…”

Section: Resultsmentioning

confidence: 99%

Evaluating the materials used for hydrogen production based on photoelectrochemical technology

Nazemzadegan

Ghasempour

2019

Int. J. Renew. Energy Dev.

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Hydrogen as a CO2-free fuel has been considered as a serious alternative for problematic fossil fuels in recent decades Photoelectrochemical (PEC) water splitting is a developing solar-based technology for hydrogen production. In this study, some possible options for upgrading this technology from R&D stage to prototype stage through a material selection approach is investigated. For these purpose, TOPSIS algorithm through a multi criteria decision making (MCDM) approach was utilized for evaluating different (PEC)-based hydrogen production materials. TiO2, WO3 and BiVO4 as three semiconductors known for their PEC application, were selected as alternatives in this decision-making study. After defining a set of criteria, which were assessed based on similar studies and experts' visions, a group of ten PEC-experts including university professors and PhD students were asked to fill the questionnaires. The eight criteria considered in this study are include "Study Cost", "Synthesis Simplicity", "Facility & Availability", "Deposition capability on TCO", "Modifiability", "Commercialization in H2 production", "Physical and Chemical Durability" and "Eco-friendly Fabrication". The final TOPSIS results indicates that TiO2 is selected as the best semiconductor for further investments in order to upgrade the PEC-based hydrogen production technology from R&D level to prototype stage. ©2019. CBIORE-IJRED. All rights reserved

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Mechanochemical synthesis of nanostructured BiVO4 and investigations of related features

Cited by 57 publications

References 30 publications

Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process

Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process

Structural, electronic and optical features of molybdenum-doped bismuth vanadium oxide

Evaluating the materials used for hydrogen production based on photoelectrochemical technology

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Mechanochemical synthesis of nanostructured BiVO4 and investigations of related features

Cited by 57 publications

References 30 publications

Visible-light photocatalytic activity of nitrogen-doped NiTiO3 thin films prepared by a co-sputtering process

Visible-light photocatalytic activity of nitrogen-doped NiTiO3 thin films prepared by a co-sputtering process

Structural, electronic and optical features of molybdenum-doped bismuth vanadium oxide

Evaluating the materials used for hydrogen production based on photoelectrochemical technology

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Product

Resources

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Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process

Visible-light photocatalytic activity of nitrogen-doped NiTiO₃ thin films prepared by a co-sputtering process