Ni, Co-Embedded MOF-Derived N-Doped Bimetallic Porous Carbon for Adsorption–Photocatalytic Degradation of Organic Dyes and Antibiotics

Ni, Co-Embedded MOF-Derived N-Doped Bimetallic Porous Carbon for Adsorption–Photocatalytic Degradation of Organic Dyes and Antibiotics

February 28, 2024 | Zheng Yang, Yi-Wu Chen, Yu-Fei Jin, Zheng Jin, Heng-Shen Xie, Xing-Shun Cong, Dao-Guang Teng
The article presents the development of a novel MOF-derived N-doped bimetallic porous carbon material, NiCo/NC, for the photocatalytic degradation of organic dyes and antibiotics. The NiCo/NC nanocomposite, characterized by well-distributed structures and suitable specific surface areas, exhibits high photocatalytic performance and stability. It effectively degrades methylene blue (MB) under visible light irradiation within 60 minutes, achieving a degradation efficiency of 100%. The catalyst's superior performance is attributed to its high dispersion of Ni and Co species, which enhances charge transfer and reduces recombination. Radical quenching experiments confirm that electron holes (h⁺) and superoxide radical anions (•O₂⁻) play dominant roles in the MB degradation process. Additionally, NiCo/NC shows good activity for other organic dyes and antibiotics, such as Rhodamine B, methyl orange, tetracycline hydrochloride, and norfloxacin. The catalyst's stability is further demonstrated by its ability to maintain its photocatalytic activity after 8 cycles. This work provides a promising protocol for the design of MOF-derived carbon materials with enhanced properties for industrial applications.The article presents the development of a novel MOF-derived N-doped bimetallic porous carbon material, NiCo/NC, for the photocatalytic degradation of organic dyes and antibiotics. The NiCo/NC nanocomposite, characterized by well-distributed structures and suitable specific surface areas, exhibits high photocatalytic performance and stability. It effectively degrades methylene blue (MB) under visible light irradiation within 60 minutes, achieving a degradation efficiency of 100%. The catalyst's superior performance is attributed to its high dispersion of Ni and Co species, which enhances charge transfer and reduces recombination. Radical quenching experiments confirm that electron holes (h⁺) and superoxide radical anions (•O₂⁻) play dominant roles in the MB degradation process. Additionally, NiCo/NC shows good activity for other organic dyes and antibiotics, such as Rhodamine B, methyl orange, tetracycline hydrochloride, and norfloxacin. The catalyst's stability is further demonstrated by its ability to maintain its photocatalytic activity after 8 cycles. This work provides a promising protocol for the design of MOF-derived carbon materials with enhanced properties for industrial applications.
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