Activation of peroxydisulfate by endogenous nitrogen-doped carbon for efficient degradation of sulfamethoxazole

被引：5

作者：

Cen, Zhan ^{[1
]}

Tang, Chengyang ^{[1
]}

Ni, Zhuobiao ^{[2
]}

Zhu, Yu ^{[1
]}

Xu, Chuanyi ^{[1
,3
]}

Qiu, Rongliang ^{[2
]}

Liu, Yingju ^{[1
]}

Zhang, Shengsen ^{[1
]}

机构：

[1] South China Agr Univ, Coll Mat & Energy, Guangdong Lab Lingnan Modern Agr, Key Lab Biobased Mat & Energy,Minist Educ, Guangzhou 510643, Peoples R China

[2] South China Agr Univ, Coll Nat Resources & Environm, Guangdong Prov Key Lab Agr & Rural Pollut Abatemen, Guangzhou 510642, Peoples R China

[3] Zhenjiang Inst Agr Sci Hilly Reg Jiangsu Prov, Jurong 212400, Peoples R China

来源：

SURFACES AND INTERFACES | 2024年 / 53卷

关键词：

Nitrogen-doped carbon materials; Peroxydisulfate activation; Sulfamethoxazole degradation; Surface-bound radicals; Mediated electron transfer; WASTE-WATER; PERSULFATE; OXIDATION; BIOCHAR;

D O I：

10.1016/j.surfin.2024.105051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An endogenous nitrogen-doped carbon (ENC) was synthesized to activate peroxydisulfate (PDS) for Sulfamethoxazole (SMX) removal using graphitic carbon nitride as the raw material. The characterization of the surface properties of ENC demonstrated that ENC is rich in functional groups and mesoporous structure, coupled with a very large specific surface area (1034.6 m(2)& sdot;g(-1)). The ENC/PDS system demonstrated up to 98.5% degradation capability of SMX within 30 min and maintained over 80% in a complex aqueous environment. Further investigation of the intrinsic mechanism of SMX decomposition by ENC/PDS confirmed the dominant roles of surface-bound radicals and mediated electron transfer, with surface-bound SO4 & sdot;- and a transient active complex (PDS/ENC*) identified as the key reactive species. This study significantly broadens the scope of nitrogen-doped carbon materials in environmental treatment by conducting an extensive investigation of the ENC/PDS/SMX system.

引用

页数：10

共 58 条

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