1
|
Gao Q, Wang Z, Rao Y, Zhao Y, Cao J, Ho KF, Zhai Y, Xiong M, Li J, Huang Y. Oxygen vacancy mediated α-MoO 3 bactericidal nanocatalyst in the dark: Surface structure dependent superoxide generation and antibacterial mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130275. [PMID: 36327852 DOI: 10.1016/j.jhazmat.2022.130275] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/11/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Understanding bacteria inactivation mechanisms of nanomaterials on the surface molecular level is of prime importance for the development of antibacterial materials and their application in restraining the transmission of pathogenic microorganisms. This study prepared an oxygen vacancy-mediated bactericidal nanocatalyst α-MoO3 which exhibited excellent antibacterial activity against Escherichia coli and Staphylococcus aureus in the dark. By manipulating the surface structure of α-MoO3, the facile tuning of superoxide radical (•O2-) generation can be achieved, which was confirmed by electron paramagnetic resonance. •O2- disrupted bacterial membrane through attacking lipopolysaccharide (LPS) and phosphatidylethanolamine (PE). Intracellular reactive oxygen species (ROS) experiments confirm that oxidative stress induced by •O2- also played a vital role in bacterial inactivation, which might account for DNA damage verified by comet assays. The α-MoO3 with rich oxygen vacancies also exhibited good antibacterial efficiency (>99.00 %) toward airborne microbes under dark conditions, indicating its potential to impede the transmission of pathogenic microbes.
Collapse
Affiliation(s)
- Qin Gao
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, PR China
| | - Zhenyu Wang
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, PR China
| | - Yongfang Rao
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Yulei Zhao
- Xi'an Institute for Innovative Earth Environment Research, Xi'an 710061, PR China
| | - Junji Cao
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, PR China
| | - Kin-Fai Ho
- The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Yue Zhai
- Xi'an Institute for Innovative Earth Environment Research, Xi'an 710061, PR China
| | - Mingyu Xiong
- Xi'an Institute for Innovative Earth Environment Research, Xi'an 710061, PR China
| | - Juntang Li
- Research Centre for Occupation and Environment Medicine, Collaborative Innovation Centre for Medical Equipment, Key Laboratory of Biological Damage Effect and Protection, Luoyang 471031, PR China
| | - Yu Huang
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, PR China.
| |
Collapse
|
2
|
Karkeh-Abadi F, Safardoust-Hojaghan H, Jasim LS, Abdulsahib WK, Mahdi MA, Salavati-Niasari M. Synthesis and characterization of Cu2Zn1.75Mo3O12 ceramic nanoparticles with excellent antibacterial property. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
3
|
Munir T, Imran M, Muzammil S, Ahad Hussain A, Fakhar-e Alam M, Mahmood A, Sohail A, Atif M, Shafeeq S, Afzal M. Antimicrobial activities of polyethylene glycol and citric acid coated graphene oxide-NPs synthesized via Hummer’s method. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
4
|
Antidiabetic and antioxidant potentials of Abelmoschus esculentus: In vitro combined with molecular docking approach. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2021.101418] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|