标題: Iron and nitrogen co-doped porous carbon derived from natural cellulose of wood activating peroxymonosulfate for degradation of tetracycline: Role of delignification and mechanisms

作者: Zheng, KW (Zheng, Kewang); Xiao, L (Xiao, Ling)

來源出版物: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 卷: 222 頁: 2041-2053 DOI: 10.1016/j.ijbiomac.2022.10.003 子輯: B 出版年: DEC 1 2022

摘要: Iron and nitrogen co-doped porous carbon materials as peroxymonosulfate (PMS) activator for tetracycline (TC) degradation were prepared by pymlyzing the mixture of iron loading cellulose and melamine under N-2 flow. The cellulose obtained from balsawood through delignification with sodium chlorite. The delignification of wood obviously improved the specific surface area and enhanced the catalytic efficiency of carbon materials obtained after pyrolysis. Enhancing graphitization degree of carbon material demonstrated that delignification of wood was conducive to formation of a short-range ordered graphitic structure during pyrolysis, which facilitated to the improvement of adsorption/catalytic performance of the carbon materials. The prepared catalyst exhibited excellent catalytic stability and adaptability under the conditions of different systems. Radical quenching test and electron paramagnetic resonance measurements suggested that superoxide radical (O-2 center dot(-)) and singlet oxygen (O-1(2)) played dominant roles in TC degradation. Fe-0/Fe3C, pyridine N and graphite N were the dominant active sites for PMS activation. This research provides new insights for the development of biomass derived high performance carbon catalysts and their application in wastewater treatment via PMS based advanced oxidation processes.

作者關鍵詞: Wood; Tetracycline; Peroxymonosulfate; Carbon materials; Delignification

地址: [Zheng, Kewang; Xiao, Ling] Wuhan Univ, Sch Resource & Environm Sci, Key Lab Biomass Resource Chem & Environm Biotechno, Wuhan 430072, Peoples R China.

通訊作者地址: Xiao, L (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Key Lab Biomass Resource Chem & Environm Biotechno, Wuhan 430072, Peoples R China.

電子郵件地址: xiaoling9119@whu.edu.cn

影響因子：8.025