Preparation of Metal Cobalt Embedded N-doped Carbon Nanotube Catalyst and Its Performance for Catalyzing Oxidative Dye Degradation by Hydrogen Peroxide
LIU Qiang1,2, DENG Cheng2,*, LI Haiyun2, SHANG Yiran2, HU Enyuan2, ZHU Mengfu2, GENG Hongzhang1,*
1 School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China 2 Systems Engineering Institute, Academy of Military Sciences of the Chinese People’s Liberation Army, Tianjin 300161, China
Abstract: Metal cobalt embedded N-doped carbon nanotube (NCNT@Co) catalyst was prepared by solid-phase pyrolysis, and its morphology and structure were systematically characterized. The effects of catalyst dosage and solution pH on catalytic performance for hydrogen peroxide oxidation reaction were investigated using methylene blue (MB) as the target pollutant. The results show that the metal Co was successfully embedded in carbon nanotube structure, forming a shell-core structure. When the addition of NCNT@Co is 20 mg and the reaction time is 15 min, it exhibits the best catalytic activity for hydrogen peroxide oxidation and the degradation rate of MB reaches up to 91.31%. Meanwhile, the NCNT@Co catalyst exhibits high catalytic activity over the pH range of 3—9. Moreover, its good stability was also proved by five recycling tests and the degradation rate of MB is still maintained at 80.89% of the initial value. This study provides a simple method for the preparation of high-perfor-mance catalysts for catalytic hydrogen peroxide oxidation.
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2025, Vol. 39 
