Mechanism, modification and application of silver-based photocatalysts

Li, Mengke; Shah, Navid Hussain; Zhang, Ping; Chen, Peng; Cui, Yanyan; Jiang, Yurong; Wang, Yaling

doi:10.1016/j.mtsust.2023.100409

Cited by 9 publications

(2 citation statements)

References 224 publications

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“…It has been an urgent and global call for the development of environmentally friendly chemical conversion processes from renewable resources because of continuously increased fuel energy demand and massive scale release of greenhouse gases [1,2]. Currently, catalytic technology, especially the photocatalysis process, is the most prevailing way for fuel and chemical production using alternative and renewable feedstocks (e.g.…”

Section: Introductionmentioning

confidence: 99%

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Song,

Xia,

Zhang

et al. 2024

Nanotechnology

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To address the global energy shortage and mitigate greenhouse gas emissions on a massive scale, it is critical to explore novel and efficient photocatalysts for the utilization of renewable resources. Bi-based metal oxide (BixMOy) semiconductors composed of bismuth, transition metal, and oxygen atoms have demonstrated improved photocatalytic activity and product selectivity. The vast number of element combinations available for BixMOy materials provides a huge compositional space for the rational design and isolation of promising photocatalysts for specific applications. In this study, we have systematically investigated the electronic and optical properties over Bi2O3 and a series of selected BixMOy group materials (BiVO4, BiFeO3, BiCoO3, and BiCrO3) by calculating band structure, basic optical property features, mobility and separation of charge carriers. It is clearly noted that band gap and band edge position of the BixMOy group materials can be tuned in a wide range in comparison to Bi2O3. Similarly, the light response of BixMOy also can be broadened from the ultraviolet to the visible light region by adjusting selection of transition metals. Additionally, the analysis of effective mass of charge carriers of these materials further confirms their possibility in photocatalytic reaction applications because of appropriate separation efficiency and mobility of carriers.

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Section: Introductionmentioning

confidence: 99%

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Song,

Xia,

Zhang

et al. 2024

Nanotechnology

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“…Consequently, this study posits that the absorption-driven selective placement of cocatalysts on designated semiconductor facets can occur independently of light exposure. Furthermore, Ag is utilized as a cocatalyst for its ideal work function, facilitating enhanced charge separation through Schottky or Ohmic contacts within Ag/semiconductor junctions. − Employing the layered perovskite oxide KCa 2 Nb 3 O 10 as the photocatalyst that has garnered considerable interest in photocatalytic research. − We demonstrate that situating Ag nanoparticles at the layer side of KCa 2 Nb 3 O 10 , via preadsorption followed by photoreduction, significantly bolsters photocatalytic efficiency. This improvement stems from an optimized electron transfer route that allows carriers to move laterally within the layer to the layer side, thus avoiding the need to cross through the interlayers to the front side.…”

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confidence: 99%

Accelerated Electron Mobility in Layered KCa₂Nb₃O₁₀ via Adsorption-Photodeposition Ag Nanoparticles at the Layer Side

Fang,

Cui,

et al. 2024

ACS Materials Lett.

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The loading position of cocatalysts in photocatalytic water splitting significantly influences their efficiency. In this study, it is demonstrating that the placement of Ag nanoparticles at the layer side of layered KCa 2 Nb 3 O 10 , through preadsorption and subsequent photoreduction. DFT reveals a preferential adsorption of Ag ions within the interlayer region, which are effectively reduced to Ag nanoparticles under UV irradiation. Microscopic analyses confirm the nucleation and growth of Ag nanoparticles primarily at the layer side, rather than on the front side. TRFL show an appreciable increase in the lifetime of photogenerated carriers compared to those with Ag nanoparticles loaded on the front side. Consequently, it is a nearly 20-fold increase in photocatalytic hydrogen evolution. This marked enhancement is due to a more efficient electron transfer pathway, wherein carriers travel laterally within the layer to reach the layer side, bypassing the need to traverse through the interlayers to the front side.

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Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

Tak,

Grewal,

Shreya

et al. 2024

Chem Eng & Technol

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This review explores advancements, challenges, and considerations in photocatalytic dye degradation for sustainable wastewater treatment. It highlights smart photocatalyst design, visible‐light‐responsive materials, and co‐catalyst engineering, which enhance system efficacy. Despite environmental concerns, the eco‐friendly aspects of photocatalysis offer a promising alternative to traditional methods. Future perspectives emphasize nanotechnology's role in developing effective photocatalysts and integrating visible‐light and solar‐driven systems to meet sustainability goals. Efforts in co‐catalyst engineering and reactor design aim to optimize processes, addressing kinetic and scalability challenges, while economic research focuses on reducing costs to improve competitiveness.

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Mechanism, modification and application of silver-based photocatalysts

Cited by 9 publications

References 224 publications

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Accelerated Electron Mobility in Layered KCa₂Nb₃O₁₀ via Adsorption-Photodeposition Ag Nanoparticles at the Layer Side

Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

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Mechanism, modification and application of silver-based photocatalysts

Cited by 9 publications

References 224 publications

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Systematic investigation on the rational design and optimization of bi-based metal oxide semiconductors in photocatalytic applications

Accelerated Electron Mobility in Layered KCa2Nb3O10 via Adsorption-Photodeposition Ag Nanoparticles at the Layer Side

Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

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Accelerated Electron Mobility in Layered KCa₂Nb₃O₁₀ via Adsorption-Photodeposition Ag Nanoparticles at the Layer Side