Antibacterial effect of nanostructured ZnO-SnO2 coatings: The role of microstructure

被引：22

作者：

Evstropiev, S. K. ^{[1
,2
]}

Karavaeva, A., V ^{[3
]}

Petrova, M. A. ^{[3
]}

Nikonorov, N., V ^{[1
]}

Vasilyev, V. N. ^{[1
]}

Lesnykh, L. L. ^{[1
]}

Dukelskii, K., V ^{[1
,4
]}

机构：

[1] ITMO Univ, St Petersburg, Russia

[2] St Petersburg State Inst Technol Tech Univ, St Petersburg, Russia

[3] St Petersburg State Chem Pharmaceut Acad, St Petersburg, Russia

[4] Bonch Bruevich St Petersburg State Univ Telecommu, St Petersburg, Russia

来源：

MATERIALS TODAY COMMUNICATIONS | 2019年 / 21卷

关键词：

ZnO-SnO2; coatings; Singlet oxygen; Crystal structure; Oxide materials; Bacteria; ZINC-OXIDE; THIN-FILMS; DOPED ZNO; MOLECULAR-OXYGEN; NANOPARTICLES; DEGRADATION; MECHANISM; REMOVAL; GROWTH;

D O I：

10.1016/j.mtcomm.2019.100628

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The article presents the study of transparent bactericidal ZnO-SnO2 coatings prepared on a glass surface by a polymer-salt method using polyvinylpyrrolidone, zinc nitrate, and tin (IV) chloride solutions. The coatings were studied by spectroscopic and luminescent methods, SEM, XRD analysis and their antibacterial activities against gram-positive (Staphylococcus aureus ATCC) and gram-negative (Escherichia coli ATCC 25922) were tested. Obtained ZnO-SnO2 films are thin (about 250-300 nm) and they fully cover the glass surface and contain oriented ZnO nanocrystals. Coatings crystal structure strongly affects their spectral and bactericidal properties. SnO(2)additions change the coatings microstructure by decreasing ZnO crystal size and making their spatial orientation more random. These microstructural changes enhance antibacterial activity against gram-positiveand gram-negative bacteria.

引用

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