Journal
NANOSCALE
Volume 14, Issue 18, Pages 6888-6901Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr01040b
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Funding
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [410871749]
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This study develops a novel approach to fast degradation of 4-nitrophenol using porous MoS2 nanoparticles as catalysts, integrating their intrinsic catalytic property with photothermal conversion capability. The open porous architecture and light-to-heat conversion performance of the MoS2 particles contribute to the catalytic enhancement. This research provides new opportunities for efficient photothermal-assisted catalysis.
Advanced catalysis triggered by photothermal conversion effects has aroused increasing interest due to its huge potential in environmental purification. In this work, we developed a novel approach to the fast degradation of 4-nitrophenol (4-Nip) using porous MoS2 nanoparticles as catalysts, which integrate the intrinsic catalytic property of MoS2 with its photothermal conversion capability. Using assembled polystyrene-b-poly(2-vinylpyridine) block copolymers as soft templates, various MoS 2 particles were prepared, which exhibited tailored morphologies (e.g., pomegranate-like, hollow, and open porous structures). The photothermal conversion performance of these featured particles was compared under near-infrared (NIR) light irradiation. Intriguingly, when these porous MoS2 particles were further employed as catalysts for the reduction of 4-Nip, the reaction rate constant was increased by a factor of 1.5 under NIR illumination. We attribute this catalytic enhancement to the open porous architecture and light-to-heat conversion performance of the MoS2 particles. This contribution offers new opportunities for efficient photothermal-assisted catalysis.
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