DOI: 10.66106/hglaa6.20250207 ISSN: 3105-7489

油茶壳基多孔炭负载铋系催化剂的制备及有机污染物降解性能研究(Preparation of Bismuth-Based Catalysts Supported on Camellia Oleifera Shell-Derived Porous Carbon and Its Degradation Performance for Organic Pollutants)

聂佳磊 Jialei Nie
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Abstract：Aiming at the problems of high cost, easy agglomeration, difficult recovery and limited degradation efficiency of organic wastewater of traditional photocatalysts, this paper uses agricultural waste oil tea shell as biomass raw material to prepare oil tea shell-based porous carbon (OSPC) through high-temperature carbonization and activation process. Bismuth-based composite catalysts supported by oil tea shell-based porous carbon were prepared by loading bismuth-based semiconductor active components on the carrier. Rhodamine B was used to simulate printing and dyeing wastewater with typical organic pollutants. The effects of process parameters such as carbonization temperature, activator dosage, bismuth source loading capacity and illumination time on the degradation performance of the catalyst were systematically explored. The microscopic morphology, pore structure and optical properties of the catalyst were analyzed by characterization, and the optimal preparation and degradation process conditions were optimized. The experimental results show that under the optimal preparation process, the oil tea shell-based porous carbon has a developed pore structure, which can effectively disperse bismuth-based active components, inhibit particle agglomeration, and improve the separation efficiency of photogenerated carriers. Under visible light irradiation, the degradation rate of composite catalyst for rhodamine B organic pollutants is significantly better than that of pure bismuth-based catalyst and unsupported porous carbon materials, and has good reuse stability. This study realizes the resource utilization of agricultural solid waste. The prepared composite catalyst is green, efficient and low-cost, which provides new environmental protection materials and technical references for the treatment of organic chemical wastewater, and has good application prospects and ecological value.

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