Sonochemical-Assisted Deposition Synthesis of Visible-Light-Driven Pd/Bi2MoO6 Used for Photocatalytic Degradation of Rhodamine B

Phuruangrat, Anukorn; Klangnoi, Thitirat; Patiphatpanya, Panudda; Dumrongrojthanath, Phattranit; Thongtem, Somchai; Thongtem, Titipun

doi:10.1007/s11664-020-08078-x

Cited by 13 publications

(3 citation statements)

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“…In the space charge layer formed, the precious metal Pd surface will acquire excess negative charge, and the Bi 2 WO 6 semiconductor surface will obtain excess positive charge; thus, the band of the Bi 2 WO 6 semiconductor will bend upward at the surface, thereby forming a lossy layer. Such a lossy layer formed on the metal–semiconductor surface is called the Schottky energy barrier, which will prevent the recombination of electron–hole pairs during photocatalysis. , Thus, the metal Pd nanoparticles act as electron acceptors, improving the charge separation and inhibiting the recombination of charge carriers in Bi 2 WO 6 .…”

Section: Resultsmentioning

confidence: 99%

“…Such a lossy layer formed on the metal−semiconductor surface is called the Schottky energy barrier, which will prevent the recombination of electron−hole pairs during photocatalysis. 57,58 Thus, the metal Pd nanoparticles act as electron acceptors, improving the charge separation and inhibiting the recombination of charge carriers in Bi 2 WO 6 .…”

Section: Mechanism 341 Evaluation Of Photogenerated Charge Carriers' ...mentioning

confidence: 99%

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Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

et al. 2022

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Bi 2 WO 6 is a promising photocatalyst for NO x removal, owing to its wide solar light absorption and specific photoelectric properties. Nevertheless, enhancing its efficiency remains a major concern. Palladium proves to be a good co-catalyst for semiconductor materials, but how the combination of Pd and bismuth tungstate affects the efficiency of NO removal and relevant process is still vague. In this work, nutshell-like bismuth tungstate was synthesized using a hydrothermal method, followed by photodepositing Pd nanoparticles with different contents. The obtained photocatalysts were characterized by X-ray diffraction, specific surface area analyzer (BET), X-ray photoelectron spectroscopy, and scanning electron microscopy. Among the prepared photocatalysts, Bi 2 WO 6 deposited with 1 wt % Pd shows the best photocatalytic activity with a NO removal efficiency of 58%, which is 2.9 times that of the Bi 2 WO 6 under the same conditions. The enhanced photocatalytic activities were attributed to the comprehensive effects of the high efficiency in separating electrons and holes, improvement in invisible light utilization and BET specific surface areas of Pd−Bi 2 WO 6 nanocomposites. More importantly, it was found that NO 2 is the main product over Bi 2 WO 6 , whereas the conversion of NO to NO 3 − (an environmentally friendly product) is dominant over Pd-modified Bi 2 WO 6 due to the enhanced separation of electrons and holes. Active species capture experiments show that photo-generated holes (h + ) and • O 2 − play an important role in NO removal. The present work provides new insights into the role of Pd cocatalysts in NO removal.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanism 341 Evaluation Of Photogenerated Charge Carriers' ...mentioning

confidence: 99%

Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

et al. 2022

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“…Among layered perovskites, Bi 2 WO 6 is the most studied and fascinating semiconductor material with a band gap of about 2.8 eV, which enables it to harvest visible light. There are several reports on Bi 2 WO 6 based materials, in which researchers tried to improve its photocatalytic performance through doping and coupling with other semiconducting materials, noble metals, and carbon based materials, a few of which are discussed in this section. − ,,− Wu et al have synthesized the Bi 2 WO 6 –BiOI heterojunction photocatalyst by coupling BiOI with Bi 2 WO 6 using microwave-assisted method . They prepared different morphologies of BiOI (nanoplate, microflower, and microsphere) and found that the BiOI microsphere showed the highest photocatalyst activity toward MO and BPA degradation under visible light irradiation.…”

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

2020

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The use of solar energy to catalyze the photo-driven processes has attracted tremendous attention from the scientific community because of its great potential to address energy and environmental issues. In this regard, several attempts have been made by researchers to design and develop different materials with enhanced photocatalytic efficiencies. This Review comprehensively summarizes the recent reports on perovskite oxide based photocatalysts for organic pollutant degradation, water splitting, carbon dioxide conversion, and nitrogen fixation along with the basic understanding of involved mechanisms, current trends and advances in the field. The different design, synthesis, and development strategies have been discussed in detail to provide a comprehensive view of materials’ fabrication that influences their photocatalytic properties. Subsequently, the insights from recent reports on different perovskite oxide based materials, including simple oxides, mixed oxides, and layered perovskite oxides, are provided for the above-mentioned photocatalytic applications in a detailed manner. Finally, a summary of photocatalytic applications and a perspective on future research direction have been discussed. Based on the research progress in this field, it is highly anticipated that the photocatalytic systems, comprising perovskite oxide materials along with groundbreaking technologies for large-scale realization of these processes, can be established in the near future to address the energy and environment-oriented challenges.

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Pd nanoparticle-modified Bi2WO6 nanoplates used for visible-light-driven photocatalyst

et al. 2021

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Sonochemical-Assisted Deposition Synthesis of Visible-Light-Driven Pd/Bi2MoO6 Used for Photocatalytic Degradation of Rhodamine B

Cited by 13 publications

References 30 publications

Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Pd nanoparticle-modified Bi2WO6 nanoplates used for visible-light-driven photocatalyst

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Sonochemical-Assisted Deposition Synthesis of Visible-Light-Driven Pd/Bi2MoO6 Used for Photocatalytic Degradation of Rhodamine B

Cited by 13 publications

References 30 publications

Palladium Nanoparticles Embedded Nutshell-like Bi2WO6 as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

Palladium Nanoparticles Embedded Nutshell-like Bi2WO6 as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Pd nanoparticle-modified Bi2WO6 nanoplates used for visible-light-driven photocatalyst

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Product

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Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

Palladium Nanoparticles Embedded Nutshell-like Bi₂WO₆ as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal