Reduced titania nanosheets as an effective visible-light germicide

被引：15
作者：
Zhen, Deshuai [1 ,2 ]
Liu, Yu [1 ,2 ]
Grimes, Craig A. [3 ]
Cai, Qingyun [1 ]
机构：
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
[2] Qiannan Normal Univ Nationalities, Coll Chem & Chem Engn, Duyun 558000, Peoples R China
[3] Flux Photon Corp, 5950 Shiloh Rd East, Alpharetta, GA 30005 USA
来源：
NANOTECHNOLOGY | 2019年 / 30卷 / 40期
基金：
中国国家自然科学基金;
关键词：
reduced titania; TiO2-x; photocatalytic; Escherichia coli; ESCHERICHIA-COLI; ANATASE TIO2; MALDI-TOF; PHOTOELECTROCATALYTIC OXIDATION; PHOTOCATALYTIC DISINFECTION; 001; FACETS; NANOPARTICLES; NITROGEN; WATER; DEGRADATION;
D O I：
10.1088/1361-6528/ab2d69
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Two-dimensional reduced titania nanosheets (RTNs), synthesized by a solvothermal method, reveal significant visible light-activated germicidal activity. XRD, XPS, EPR, TEM and Raman show successful reduction of anatase TiO2, resulting in Ti3+ formation as well as an increase in the concentration of {001} facets. The RTNs possess a bandgap energy of approximately 2.86 eV, and demonstrate strong absorption over the visible spectrum. Under simulated solar light (lambda = 320-780 nm, 70mW cm(-2)) the RTNs are found to completely inactivate Escherichia coli bacteria within 1 h. Our study indicates the RTNs have significant potential for ameliorating antibiotic-resistant bacteria in clinical settings under ambient lighting conditions.
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页数：9
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