DOI: 10.1016/j.cej.2019.123017
论文题名: Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies
作者: Liu M. ; Zhang D. ; Han J. ; Liu C. ; Ding Y. ; Wang Z. ; Wang A.
刊名: Chemical Engineering Journal
ISSN: 13858947
出版年: 2020
卷: 382 语种: 英语
英文关键词: Adsorption enhancement
; Carbon nitride nanosheets
; Carbon vacancies
; Hydrogen evolution
; Sulfadiazine degradation
Scopus关键词: Adsorption
; Antibiotics
; Chemicals removal (water treatment)
; Nanosheets
; Nitrides
; Organic pollutants
; Porous materials
; Quantum theory
; Solar power generation
; Carbon vacancy
; Hydrogen evolution
; Persistent organic pollutant (POP)
; Photo catalytic degradation
; Photocatalytic efficiency
; Photocatalytic hydrogen evolution
; Quantum mechanical simulations
; Visible-light irradiation
; Carbon nitride
英文摘要: Residues 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 H2 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. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159287
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China
Recommended Citation:
Liu M.,Zhang D.,Han J.,et al. Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies[J]. Chemical Engineering Journal,2020-01-01,382