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Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies
Liu, Meijun; Zhang, Depeng; Han, Jinglong; Liu, Chengbin; Ding, Yangcheng; Wang, Zhigang; Wang, Aijie
2020-02-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume382Pages:1-9
AbstractResidues of antibiotics are promoting antibiotic resistance of environmental microbiota which is identified as one of the most crucial global challenge for health security. Photocatalysis has been regarded as a desirable technology for organic pollutant removal, but is underappreciated in degradation of persistent organic pollutants due to the low adsorption capacity and photocatalytic efficiency of photocatalysts. In this study, a scalable photocatalyst of single/few-layered carbon nitride nanosheets with carbon vacancies (Cv-CNNs) is synthesized through a thermal process. Quantum mechanical simulation results reveal that the C vacancies can change the plane structure of CN sheets, enhancing adsorption capability of Cv-CNNs towards sulfadiazine (SDZ, a refractory antibiotic pollutant). Furthermore, the introduction of C vacancies in Cv-CNNs enhance the redox capacity, promoting photocatalytic hydrogen evolution and SDZ degradation. The removal efficiency of SDZ (5 mg L-1) reaches almost 100% within 20 min under visible-light irradiation. In addition, the photocatalyst delivers a high H-2 evolution rate of 2.03 mmol h(-1) g(-1). The study provides a large-scale-production metal-free photocatalyst for practical application in antibiotics removal from wastewater or solar-to-hydrogen energy conversion.
Department中国科学院环境生物技术重点实验室
KeywordCarbon nitride nanosheets Carbon vacancies Adsorption enhancement Sulfadiazine degradation Hydrogen evolution
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45130
Collection中国科学院环境生物技术重点实验室
Recommended Citation
GB/T 7714
Liu, Meijun,Zhang, Depeng,Han, Jinglong,et al. Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies[J]. CHEMICAL ENGINEERING JOURNAL,2020,382:1-9.
APA Liu, Meijun.,Zhang, Depeng.,Han, Jinglong.,Liu, Chengbin.,Ding, Yangcheng.,...&Wang, Aijie.(2020).Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies.CHEMICAL ENGINEERING JOURNAL,382,1-9.
MLA Liu, Meijun,et al."Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies".CHEMICAL ENGINEERING JOURNAL 382(2020):1-9.
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