Photocatalytic degradation of pharmaceuticals by pore-structured graphitic carbon nitride with carbon vacancy in water: Identification of intermediate degradants and effects of active species
文献类型：期刊论文
| 作者 | Tao, Le ; Zhang, He; Li, Guoliang; Liao, Chunyang; Jiang, Guibin
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-06-10 |
| 卷号 | 824期号:0页码:153845 |
| 关键词 | LIGHT G-C3N4 EFFICIENT NANOPARTICLES REDUCTION HETEROJUNCTION ADSORPTION NANOSHEETS MECHANISM ATENOLOL |
| ISSN号 | 0048-9697 |
| 英文摘要 | Pharmaceuticals are increasingly used in daily life and have been massively discharged to the aquatic environment. The removal of pharmaceuticals from water by various nanomaterials including graphitic carbon nitride (g-C3N4) has received extensive attention. Herein, we synthesized a carbon-defective carbon nitride with pore structure through a simple thermal polymerization method for photodegradation of lidocaine, mepivacaine and ropivacaine (typical amide local anesthetics). The results showed that the degradation process conformed to the pseudo-first-order reaction kinetics, and the degradation rate constant of organic pollutants using CCN-600 (i.e., g-C3N4 synthesized at 600 degrees C) reached 5.05 x 10(-2) min(-1), about 2.5 times higher than that of the prototype g-C3N4 (2.09 x 10(-2) min(-1)). The capture experiment of active species and the electron paramagnetic resonance (EPR) test demonstrated that superoxide radical (center dot O-2(-)) played a major role in the degradation process. Based on the possible photodegraded intermediate products identified, the degradation pathways were deduced. This study provides not only a new strategy for fabrication of pore-structured g-C3N4 with carbon vacancy, but also a reference method for the treatment of pharmaceuticals in water bodies. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47601]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 通讯作者 | Liao, Chunyang |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Qingdao Univ, Coll Environm Sci & Engn, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao, Le,Zhang, He,Li, Guoliang,et al. Photocatalytic degradation of pharmaceuticals by pore-structured graphitic carbon nitride with carbon vacancy in water: Identification of intermediate degradants and effects of active species[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,824(0):153845. |
| APA | Tao, Le,Zhang, He,Li, Guoliang,Liao, Chunyang,&Jiang, Guibin.(2022).Photocatalytic degradation of pharmaceuticals by pore-structured graphitic carbon nitride with carbon vacancy in water: Identification of intermediate degradants and effects of active species.SCIENCE OF THE TOTAL ENVIRONMENT,824(0),153845. |
| MLA | Tao, Le,et al."Photocatalytic degradation of pharmaceuticals by pore-structured graphitic carbon nitride with carbon vacancy in water: Identification of intermediate degradants and effects of active species".SCIENCE OF THE TOTAL ENVIRONMENT 824.0(2022):153845. |
入库方式： OAI收割
来源：生态环境研究中心
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