Development of nanostructured based ZnO@WO3 photocatalyst and its photocatalytic and electrochemical properties: Degradation of Rhodamine B

Xu, Youzhi; Chen, Tiwei

doi:10.1016/j.ijoes.2023.100055

Cited by 13 publications

(4 citation statements)

References 55 publications

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“…Furthermore, the straight lines displaying phase angles exceeding 45° for all electrodes provide evidence of capacitive behavior . This highlights its crucial role in energy storage applications. , The equivalent circuit diagram for the EIS is shown in Figure S6a. The reaction kinetics of the electrodes are explored to ascertain the primary mechanism for energy storage in these materials.…”

Section: Resultsmentioning

confidence: 88%

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Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Barhoi,

Mahto,

Ali

et al. 2024

Langmuir

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Developing an improved synthesis method that controls the morphology and crystal phase remains a substantial challenge. Herein, we report phase and morphologycontrolled hydrothermal synthesis of tungsten oxides by varying acid concentration and utilizing glutathione (GSH) as a structural directing agent, together with the exploration of their applications in supercapacitors, photoconductivity, and photocatalysis. Orthorhombic hydrated tungsten oxide (WO 3 •0.33H 2 O) with nonuniform block and plate-like morphology was obtained at 3 M hydrochloric acid (HCl). In contrast, nonhydrated monoclinic tungsten oxide (WO 3 ) with smaller rectangular blocks was obtained at 6 M HCl. Further, the addition of GSH results in an increase in the surface area of the materials along with a narrowing of the band gap. Moreover, it plays a pivotal role in regulating the morphology through oriented attachments, Ostwald ripening, and the self-assembly of WO 3 nuclei. GHTO and GTO polymorphs showed pseudocapacitive behavior with the highest specific capacitances of 450 and 300 F g −1 at 0.5 A g −1 , maintaining 94 and 92% retention stability, respectively, over 1000 cycles at 2 A g −1 . Also, the synthesized materials displayed favorable photoconductivity under light irradiation, implying potential utilization in photovoltaic applications. Moreover, these materials exhibited remarkable photocatalytic performance in the degradation of methylene blue (MB) dye, establishing themselves as highly effective photocatalysts. Therefore, nanostructured tungsten oxide showcases its versatility, rendering it an appealing candidate for energy storage, photovoltaic systems, and photocatalysis.

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Section: Resultsmentioning

confidence: 88%

“…56 This highlights its crucial role in energy storage applications. 57,58 The equivalent circuit diagram for the EIS is shown in Figure S6a. The reaction kinetics of the electrodes are explored to ascertain the primary mechanism for energy storage in these materials.…”

mentioning

confidence: 99%

Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Barhoi,

Mahto,

Ali

et al. 2024

Langmuir

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“…These materials can be realized to unlock the full potential of piezo-photocatalysis. [12][13][14] Other materials, such as SrTiO 3 , PbTiO 3 , and Na 0.5 Bi 0.5 TiO 3 , realize an inherent piezoelectric property due to their high dielectric constant. For another example, ZnO, while it does not possess any polarization in its crystal, it can exhibit dipolar polarization.…”

Section: Yen-peimentioning

confidence: 99%

Recent developments in piezo-photocatalytic CO₂ reduction: concepts, mechanism, and advances

Verma,

2024

Dalton Trans.

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“…The ZnO/WO 3 photocatalyst synthesized by hydrothermal and calcination methods exhibited the outstanding photocatalytic H 2 O 2 production due to the generation of interfacial internal electric field (IEF) in the S-scheme heterojunction, which can further suppress the charge recombination and empower the electrons to participate the photocatalytic reaction 37 . A ZnO@WO 3 nanocomposite synthesized by the hydrothermal method exhibited a short rod-like structure with a long lifespan of charge carriers and a low charge transfer resistance 38 . Besides, hybridizing WO 3 with ZnO importantly changed the forbidden band width of the nanocomposites, thus improving the visible light response and the photocatalytic degradation of RhB.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient ZnO/WO3 nanocomposites towards photocatalytic gold recovery from industrial cyanide-based gold plating wastewater

Sangkhanak,

Kunthakudee,

Hunsom

et al. 2023

Sci Rep

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Discharging the gold-contained wastewater is an economic loss. In this work, a set of ZnO/WO3 was facile synthesized by hydrothermal method in order to recover gold from the industrial cyanide-based gold plating wastewater by photocatalytic process. Effect of ZnO contents coupled with WO3 was first explored. Then, effects of operating condition including initial pH of wastewater, type of hole scavenger, concentration of the best hole scavenger and photocatalyst dose were explored. A series of experimental results demonstrated that the ZnO/WO3 nanocomposite with 5 wt% ZnO (Z5.0/WO3) depicted the highest photocatalytic activity for gold recovery due to the synergetic effect of oxygen vacancies, a well-constructed ZnO/WO3 heterostructure and an appropriate band position alignment with respect to the redox potentials of [Au(CN)2]− and hole scavengers. Via this ZnO/WO3 nanocomposite, approximately 99.5% of gold ions was recovered within 5 h using light intensity of 3.57 mW/cm2, catalyst dose of 2.0 g/L, ethanol concentration of 20 vol% and initial pH of wastewater of 11.2. In addition, high stability and reusability were observed with the best nanocomposite even at the 5th reuse. This work provides the guidance and pave the way for designing the ZnO/WO3 nanocomposite for precious metal recovery from a real industrial wastewater.

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Development of nanostructured based ZnO@WO3 photocatalyst and its photocatalytic and electrochemical properties: Degradation of Rhodamine B

Cited by 13 publications

References 55 publications

Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Recent developments in piezo-photocatalytic CO₂ reduction: concepts, mechanism, and advances

Highly efficient ZnO/WO3 nanocomposites towards photocatalytic gold recovery from industrial cyanide-based gold plating wastewater

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Development of nanostructured based ZnO@WO3 photocatalyst and its photocatalytic and electrochemical properties: Degradation of Rhodamine B

Cited by 13 publications

References 55 publications

Glutathione-Mediated Synthesis of WO3 Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Glutathione-Mediated Synthesis of WO3 Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Recent developments in piezo-photocatalytic CO2 reduction: concepts, mechanism, and advances

Highly efficient ZnO/WO3 nanocomposites towards photocatalytic gold recovery from industrial cyanide-based gold plating wastewater

Contact Info

Product

Resources

About

Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Glutathione-Mediated Synthesis of WO₃ Nanostructures with Controllable Morphology/Phase for Energy Storage, Photoconductivity, and Photocatalytic Applications

Recent developments in piezo-photocatalytic CO₂ reduction: concepts, mechanism, and advances