Revealing the pivotal role of B/N-co-doping onto carbon nanospheres for promoted sulfamethoxazole degradation and its bio-toxicity evaluation
文献类型： 外文期刊
作者： Wang, Jing 1 ; Jiang, Enhui 2 ; Jia, Mingyang 1 ; Xing, Baosong 1 ; Fang, Chen 3 ; Wang, Haoqi 3 ; Yan, Jiaying 3 ; Pan, Chuanying 2 ; Liu, Xiang 3 ; Lan, Xianyong 2 ;
作者机构： 1.Henan Acad Agr Sci, Inst Anim Husb, Zhengzhou 450002, Henan, Peoples R China
2.Northwest A&F Univ, Coll Anim Sci & Technol, Yangling 712100, Shannxi, Peoples R China
3.China Three Gorges Univ, Coll Mat & Chem Engn, Engn Res Ctr Ecoenvironm Gorges Reservoir Reg 3, Minist Educ, Yichang 443002, Hubei, Peoples R China
关键词： Carbon nanospheres; B/N co-doping; Selective 1 O 2 generation; Biotoxicity evaluation; Water decontamination
期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.2； 五年影响因子：7.6 ）
ISSN： 2213-2929
年卷期： 2025 年 13 卷 4 期
页码：
收录情况： SCI
摘要： The doping of hetero-atoms into carbon framework could significantly regulate and activate inherent active sites of carbon configuration, thus promoting the catalytic performance of carbon catalysts. However, the mechanisms are contradictory, more effort needs to be put into mechanism insight. Herein, we designed and synthesized B/Nco-doped carbon nanospheres (B/N-CNS) in activating peroxymonosulfate (PMS) for promoted sulfamethoxazole degradation via nonradical oxidation pathway. Fully physical characterizations highlighted that as-obtained B/ N-CNS exhibited a uniform structure of nanosphere with abundant B-N bond and B-C bond at the surface, which was beneficial to attract PMS and sulfamethoxazole (SMX) via Lewis acid-base effect. Quenching tests and electron paramagnetic resonance (EPR) analysis confirmed that the co-doped B/N atoms in B/N-CNS was conducive to the selective singlet oxygen(1O2) generation from PMS activation. Indeed, B/N-CNS also exhibited a much higher degradation efficiency (93.12 %) and mineralization rate (73.29 %) than those of N-CNS (78.00 %, 59.39 %) and B-CNS (47.55 %, 26.20 %) on SMX degradation, respectively. In addition, Ecological StructureActivity Relationships (ECOSAR) model also illustrated the bio-toxicity of SMX to green algae, fish and daphnid was significantly reduced to ecological environment safety standards after treatment of B/N-CNS/PMS system.
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