Effects of Zirconium Doping Into a Monoclinic Scheelite BiVO4 Crystal on Its Structural, Photocatalytic, and Photoelectrochemical Properties

Ikeda, Shigeru; Kawaguchi, Takato; Higuchi, Yui; Kawasaki, Naoto; Harada, Takashi; Remeika, Mikas; Islam, Muhammad Monirul; Sakurai, Takayasu

doi:10.3389/fchem.2018.00266

Cited by 30 publications

(24 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(a) shows the XRD patterns of AC, BV and AC-BV nanoparticles synthesized from hydrothermal process from which all the crystal planes and related 2Ɵ values were observed. Generally, the photocatalytic property of BiVO4 is associated with crystalline phase; only the monoclinic scheelite structure has good photocatalytic activity [26].Therefore, the objective of this synthesis is to produce more volume of monoclinic scheelite structured material. All diffraction peaks correspond to the monoclinic scheelite structure of BiVO4 with lattice constants a=5.195Ȧ, b=11.701 Ȧ, c=5.092 Ȧ in accordance with the standard JCPDS No.14-0688.…”

Section: Structural Analysismentioning

confidence: 99%

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Prabhavathy¹,

Arivuoli²

2021

JMSSE

View full text Add to dashboard Cite

An Efficient photocatalysts for environmental remediation have generated much interest in recent times with a significant emphasis on natural light source. In the present study, activated carbon (AC) incorporated BiVO4 (BV) were synthesized using hydrothermal method and their photocatalytic properties were studied through the photodegradation of Rhodamine B (Rh-B) as a model pollutant under sunlight irradiation. The structural and morphological characteristics of BV and AC-BV nanoparticles have been ascertained, which reveals BV crystallizes in pure monoclinic phase at 120 °C, whereas the modification with AC leads to hexagonal shaped particles. In an effort to develop highly active visible light photocatalysts, small particle size, extended visible absorption in solar spectrum, narrow bandgap and increased surface area were achieved. The inclusion of AC into BV nanoparticles assists the bandgap tuning from 2.4 eV to 1.9 eV which effectively improves the visible light activity of BiVO4. The AC-BV nanoparticles possess mesoporous structure with high surface area of 68.10 m 2 /g which is 9 times greater than that of BV nanoparticles (7.34 m 2 /g). The synthesized AC-BV nanoparticles degrade the pollutant about 98% within 60 minutes whereas BV nanoparticles degrade 47% at same condition. The influence of AC on BV triggers the rate of degradation, due to the narrow bandgap and porosity of the carbon. This study provides a promising photocatalyst to be used for treatment of effluents in large scale.

show abstract

Section: Structural Analysismentioning

confidence: 99%

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Prabhavathy¹,

Arivuoli²

2021

JMSSE

View full text Add to dashboard Cite

show abstract

“…The photocatalyst efficiency could be enhanced with the introduction of transition-metal cations (W [340], Cr [341], Zr [342], Mn [343][344][345], Fe [346], Ni [341,347,348], Mo [340,349,350]) or anions (N [351], C [352], S [353,354], B [355]). Doping ions are functional in the modification of electronic and optical properties of semiconductors and improve photoelectrical conductivity and charge-carriers transport and separation [356].…”

Section: Modification Techniquesmentioning

confidence: 99%

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

et al. 2020

View full text Add to dashboard Cite

Innovative renewable routes are potentially able to sustain the transition to a decarbonized energy economy. Green synthetic fuels, including hydrogen and natural gas, are considered viable alternatives to fossil fuels. Indeed, they play a fundamental role in those sectors that are difficult to electrify (e.g., road mobility or high-heat industrial processes), are capable of mitigating problems related to flexibility and instantaneous balance of the electric grid, are suitable for large-size and long-term storage and can be transported through the gas network. This article is an overview of the overall supply chain, including production, transport, storage and end uses. Available fuel conversion technologies use renewable energy for the catalytic conversion of non-fossil feedstocks into hydrogen and syngas. We will show how relevant technologies involve thermochemical, electrochemical and photochemical processes. The syngas quality can be improved by catalytic CO and CO2 methanation reactions for the generation of synthetic natural gas. Finally, the produced gaseous fuels could follow several pathways for transport and lead to different final uses. Therefore, storage alternatives and gas interchangeability requirements for the safe injection of green fuels in the natural gas network and fuel cells are outlined. Nevertheless, the effects of gas quality on combustion emissions and safety are considered.

show abstract

“…The Tin (Sn) as dopant having excellent charge mobility (200 cm 2 V −1 s −1 ) and the lowest onset potential among the n‐type dopants. Also, tetravalent Zr is substituted into the trivalent Bi site, which could effectively induce the n‐type conductivity [25] . These metals can reduce the bandgap energy by an upward shift of the valence band by the contribution of lone pair cation and thus enhance the photogenerated electron migration property of the bare BiVO 4 photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Sn and Zr‐Doped BiVO₄ Nanocatalyst with Enhanced Photocatalytic and Photoelectrochemical Activity

et al. 2022

View full text Add to dashboard Cite

Herein, a facile microwave route to synthesized of Tin (Sn) and Zirconium (Zr) doped BiVO4 with enhanced photocatalytic and photoelectrochemical performance are demonstrated. X‐ray diffraction (XRD) studies confirmed the monoclinic‐tetragonal structure of metal doped BiVO4. Field Emission Scanning Electron Microscopy (FE‐SEM) images confirmed the sphere like morphology while bare is in floral structure. The Raman (RS) and Fourier Transform Infra‐Red (FT‐IR) Spectroscopy indicate the functional group of composition. Photoluminance (PL) spectroscopy revealed that the doped BiVO4 showed better excitation then the bare BiVO4. The UV‐Visible diffused reflectance (UV‐vis‐DRS) spectroscopy exposed improved visible light driven by narrow band gap of metal doped BiVO4. Further Electrochemical impedance spectroscopy (EIS) and Linear Sweep voltammetry characterization (LSV) report that the metal doped BiVO4 established better photoelectrochemical activity in water splitting. The impact of metal doping in the crystallinity, optical properties, electrical properties and photocatalytic activity were evaluated using model pollutant of azo dyes and gaseous acetaldehyde under visible light irradiation. The Zr doped BiVO4 exhibit better performance for degradation of dyes, acetaldehyde decomposition and water splitting properties then the Sn doped BiVO4 and bare BiVO4. This work founds that the metal doping with semiconductor is effective in creating heterostructured nanomaterials, which result in reduce the recombination processes, leading to improved photocatalytic and photoelectrochemical performance.

show abstract

Effects of Zirconium Doping Into a Monoclinic Scheelite BiVO4 Crystal on Its Structural, Photocatalytic, and Photoelectrochemical Properties

Cited by 30 publications

References 24 publications

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

Synthesis of Sn and Zr‐Doped BiVO₄ Nanocatalyst with Enhanced Photocatalytic and Photoelectrochemical Activity

Contact Info

Product

Resources

About

Effects of Zirconium Doping Into a Monoclinic Scheelite BiVO4 Crystal on Its Structural, Photocatalytic, and Photoelectrochemical Properties

Cited by 30 publications

References 24 publications

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Sunlight Driven Activated Carbon Modified BiVO4 Photocatalyst for the Degradation of Rhodamine-B

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

Synthesis of Sn and Zr‐Doped BiVO4 Nanocatalyst with Enhanced Photocatalytic and Photoelectrochemical Activity

Contact Info

Product

Resources

About

Synthesis of Sn and Zr‐Doped BiVO₄ Nanocatalyst with Enhanced Photocatalytic and Photoelectrochemical Activity