Fabrication of TiVO<sub>4</sub> photoelectrode for photoelectrochemical application

Alruwaili, Manal; Roy, Anurag; Nundy, Srijita; Tahir, Asif Ali

doi:10.1039/d2ra05894d

Cited by 9 publications

(17 citation statements)

References 66 publications

(80 reference statements)

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“…The X-ray diffraction (XRD) patterns of the prepared TiVO 4 and TiVO 4 /Co (3 mM) samples are displayed in Figure a. Both patterns exhibit diffraction peaks that match the single-phase TiVO 4 peaks, specifically oriented in the (110), (111), and (211) crystal planes, which align well with previous findings . These results further confirm the tetragonal structure of the samples, as indicated by the JCPDS file 01-770332.…”

Section: Resultssupporting

confidence: 86%

“…Titanium vanadate photoanodes were synthesized using the spray pyrolysis technique, as detailed in our previous publication . In summary, a solution was prepared by dissolving vanadium acetylacetonate and titanium isopropoxide in 15 mL of ethanol.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, it has a reduced tendency to form recombination centers, leading to enhanced and efficient water splitting reactions, specifically the OER and HER. Consequently, incorporating this co-catalyst results in a significant improvement in the PEC activity. − Co NPs, an earth-abundant transition co-catalyst, were introduced onto the surface of plain TiVO 4 thin films using the wet impregnation technique inspired by our previous work . In this study, we aimed to enhance the photocurrent density of the TiVO 4 photoanode, which was previously prepared via spray pyrolysis, by varying the cobalt solution contents.…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

et al. 2023

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To optimize the semiconductor properties of TiVO4 thin films and enhance their performance, we incorporated cobalt nanoparticles as an effective co-catalyst consisting of a non-noble metal. Through an investigation into the impact of cobalt loading on spray pyrolyzed TiVO4 thin films, we observed a significant enhancement in the photoelectrochemical (PEC) performance. This was accomplished by carefully optimizing the concentrations of Co2+ (3 mM) to fabricate a composite electrode, resulting in a higher photocurrent density for the TiVO4:Co photoanode. When an applied potential of 1.23 V (vs RHE) was used, the photocurrent density reached 450 μA/cm2, approximately 5 times higher than that of bare TiVO4. We conducted a thorough characterization of the composite structure and optical properties. Additionally, electrochemical impedance spectroscopy analysis indicated that the TiVO4/Co thin film exhibited a smaller semicircle, indicating a significant improvement in charge transfer at the interface. In comparison to bare TiVO4, the TiVO4/Co composite exhibited a notable improvement in photocatalytic activity when degrading methylene blue (MB) dye, a widely employed model dye. Under light illumination, a TiVO4/Co thin film exhibited a notable dye degradation rate of 97% within a 45 min duration. The scalability of our fabrication method makes it suitable for large-area devices intended for sunlight-driven PEC seawater splitting studies.

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Section: Resultssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

et al. 2023

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“…Apart from the characteristic peaks of V 2 O 5 and TiO 2 , there are obvious peaks (27.5°, 36.1°, 54.4°) corresponding to (110), ( 101), (220) phases of TiVO 4 (JCPDS 01-770332), which confirms that there is solid solution TiVO 4 of rutile TiO 2 and VO 2 in V 2 O 5 /TiO 2 catalysts. 39,40 According to the Raman results, it can be considered that the content of solid solution TiVO 4 is the highest in 30% VT due to the largest red-shift of the E g peak. As a result of low V 2 O 5 loading and the V 2 O 5 crystal formation, the TiVO 4 characteristic peaks cannot be observed in the XRD pattern of 10 and 50 wt % V 2 O 5 /TiO 2 powder samples.…”

Section: Resultsmentioning

confidence: 99%

“…With the highest content of solid solution TiVO 4 , the 30% VT sample has a narrower band gap width than the 10% VT and 30% VT samples (Figure 4d) because the band gap widths of VO 2 and rutile TiO 2 are 0.69 and 3.0 eV. 40 In addition, due to the infiltration of V 4+ into the TiO 2 lattice, there are stable oxygen vacancy defects on the interface (Figure 6e), capturing electrons to improve the electron−hole separation rate. The properties of the 30% VT sample illustrate that the formation of a solid solution phase is beneficial for improving the effect of plasma activation on the catalyst.…”

Section: Reaction Pathway and Performance Comparisonmentioning

confidence: 96%

Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

Xia,

Wu,

et al. 2023

Energy Fuels

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As one of the most consensus goals around the world, reduction of carbon emissions has attracted huge attention from academic and industry communities for developing renewable energy sources and carbon capture techniques. Nonthermal equilibrium plasma catalysis has been proven to be a very promising way for CO 2 conversion into high-value-added products; however, the synergistic catalytic mechanism between the plasma and various catalysts remains a challenge. In this work, we designed a reactor of atmospheric pressure glow discharge (APGD) plasma jet coupled with V 2 O 5 /TiO 2 nanocomposite catalysts and studied the influence of V 2 O 5 mass fraction, catalyst pretreatment, and reaction plasma parameters on the CO 2 dissociation performance. Results showed that the designed reactor could introduce high-density plasma to the downstream area and maintain lower gas temperature, allowing the collaboration between APGD and the V 2 O 5 /TiO 2 catalyst. The XRD analysis indicated that the solid solution phase TiVO 4 could be formed in catalysts by V 2 O 5 doping and reach a maximal content at a mass fraction of 30%, which determined the most excellent redox ability of the catalyst. The pretreatment of the as-prepared catalyst by Ar dielectric barrier discharge (DBD) plasma increased the oxygen vacancy density of the catalyst, thereby raising the conversion rate by 18.43%. Moreover, the transition regime between laminar and turbulent states was found to be the optimal configuration for CO 2 dissociation. The reaction pathway was proposed for CO 2 dissociation synergistically catalyzed by an APGD plasma jet and V 2 O 5 / TiO 2 . Ultimately, the maximum conversion of 14.88% and energy efficiency of 40.45% were simultaneously achieved, which were superior to the results of most atmospheric pressure plasmas. This work opens an avenue to develop plasma technology for sustainable CO 2 utilization.

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Development of ABO₄‐type photoanodes for photoelectrochemical water splitting

Wang,

Liu,

Zhang

et al. 2023

EcoEnergy

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Photoelectrochemical (PEC) water splitting with zero carbon emissions is a promising technology to solve the global issues of energy shortage and environmental pollution. However, the current development of PEC systems is facing a bottleneck of low solar‐to‐hydrogen (STH) efficiency (<10%), which cannot meet the demand of large‐scale H2 production. The development of low‐cost, highly active, and stable photoanode materials is crucial for high STH efficiency of PEC water splitting. The recent development of BiVO4 as photoanode materials for PEC water splitting has been a great success, and ABO4‐type ternary metal oxides with a similar structure to BiVO4 have high development potential as efficient photoanodes for high‐performance PEC water splitting. The design and development of ABO4 photoanodes for PEC water splitting are critically reviewed with special emphasis on the modification strategies and performance improvement mechanisms of each semiconductor. The comprehensive analysis in this review provides guidelines and insights for the exploration of new high‐efficiency photoanodes for solar fuel production.

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Fabrication of TiVO₄ photoelectrode for photoelectrochemical application

Abstract: TiVO4 photoanode was prepared using the spray pyrolysis technique and further employed for photoelectrochemical water splitting to produce hydrogen.

Cited by 9 publications

References 66 publications

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

Development of ABO₄‐type photoanodes for photoelectrochemical water splitting

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Fabrication of TiVO4 photoelectrode for photoelectrochemical application

Abstract: TiVO4 photoanode was prepared using the spray pyrolysis technique and further employed for photoelectrochemical water splitting to produce hydrogen.

Cited by 9 publications

References 66 publications

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO4 Thin Film

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO4 Thin Film

Enhancing CO2 Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

Development of ABO4‐type photoanodes for photoelectrochemical water splitting

Contact Info

Product

Resources

About

Fabrication of TiVO₄ photoelectrode for photoelectrochemical application

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

Synergistic Photoelectrochemical and Photocatalytic Properties of the Cobalt Nanoparticles-Embedded TiVO₄ Thin Film

Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

Development of ABO₄‐type photoanodes for photoelectrochemical water splitting