دورية أكاديمية
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Modulation of ultrathin nanosheet structure and nitrogen defects in graphitic carbon nitride for efficient photocatalytic bacterial inactivation.

التفاصيل البيبلوغرافية
العنوان: Modulation of ultrathin nanosheet structure and nitrogen defects in graphitic carbon nitride for efficient photocatalytic bacterial inactivation.
المؤلفون: Zhong KQ; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China., Xie DH; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China., Liu YJ; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China., Guo PC; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China., Sheng GP; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China.
المصدر: Water research X [Water Res X] 2023 Aug 04; Vol. 20, pp. 100193. Date of Electronic Publication: 2023 Aug 04 (Print Publication: 2023).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Ltd Country of Publication: England NLM ID: 101742109 Publication Model: eCollection Cited Medium: Internet ISSN: 2589-9147 (Electronic) Linking ISSN: 25899147 NLM ISO Abbreviation: Water Res X Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: [London] : Elsevier Ltd., [2018]-
مستخلص: The efficient generation and utilization of ROSs is a key step in determining the achievement of safe drinking water by photocatalytic bacterial inactivation technology. Although graphitic carbon nitride (g-C 3 N 4 ) serves as a green and promising photocatalyst for water disinfection, insufficient bacterial capturing capacity and serious charge recombination of pristine g-C 3 N 4 extremely restrict its bactericidal activity. Herein, we develop a facile thermal exfoliation and thermal polymerization method to prepare the nitrogen-defective ultrathin g-C 3 N 4 nanosheets (DUCN-500). Our results showed that ultrathin nanosheet structure greatly enhanced bacterial capturing capacity of g-C 3 N 4 to increase the utilization efficiency of ROS, which contributed to the performance of DUCN-500 greatly outperforming bulk g-C 3 N 4 . The nitrogen defects increased ROS generation (·O 2 - and H 2 O 2 ) by approximately 4.6 times, which was attributed to negative shift of the conduction band potential and rapid separation of charge carriers. The DUCN-500 could rapidly and completely inactivate Escherichia coli and Bacillus subtilis in real sewage under simulated solar irradiation, accompanied by good anti-interference capability and stability. Additionally, bacterial morphology destruction, the loss of antioxidant enzyme activity and the leakage of protein were proven to be the main mechanisms of photocatalytic sterilization. This study offers new insight into the rational design of efficient g-C 3 N 4 -based photocatalysts for water disinfection.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2023 The Authors.)
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فهرسة مساهمة: Keywords: Bacterial capture; Nitrogen vacancy; Photocatalytic bacterial inactivation; Ultrathin nanosheet; g-C3N4
تواريخ الأحداث: Date Created: 20230821 Latest Revision: 20230823
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC10433005
DOI: 10.1016/j.wroa.2023.100193
PMID: 37601243
قاعدة البيانات: MEDLINE
الوصف
تدمد:2589-9147
DOI:10.1016/j.wroa.2023.100193