Mechanism of Antibacterial Activity via Morphology Change of α-AgVO3: Theoretical and Experimental Insights

被引：60

作者：

de Oliveira, Regiane Cristina ^{[1
]}

de Foggi, Camila Cristina ^{[2
]}

Teixeira, Mayara Mondego ^{[1
]}

Penha da Silva, Maya Dayana ^{[1
]}

Assis, Marcelo ^{[1
]}

Francisco, Eric Mark ^{[1
]}

Alves da Silva Pimentel, Bruna Natalia ^{[2
]}

dos Santos Pereira, Paula Fabiana ^{[1
]}

Vergani, Carlos Eduardo ^{[2
]}

Machado, Ana Lucia ^{[2
]}

Andres, Juan ^{[3
]}

Gracia, Lourdes ^{[3
,4
]}

Longo, Elson ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, CDMF UFSCar, POB 676, BR-13563905 Sao Carlos, SP, Brazil

[2] Univ Estadual Paulista, FOAr UNESP, POB 1680, BR-14801903 Araraquara, SP, Brazil

[3] Univ Jaume 1, Dept Quim Fis & Analit, Castellon de La Plana 12071, Spain

[4] Univ Valencia, Dept Phys Chem, E-46100 Burjassot, Spain

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 13期

基金：

巴西圣保罗研究基金会;

关键词：

alpha-AgVO3; morphologies; first-principles calculations; photoluminescence; Wulff construction; antibacterial activity; CRYSTAL-STRUCTURE; METASTABLE BETA-AG2WO4; PHASE; STABILITY; AGVO3; MICROCRYSTALS; OXIDES;

D O I：

10.1021/acsami.7b00920

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The electronic configuration, morphology, optical features, and antibacterial activity of metastable alpha-AgVO3 crystals have been discussed by a conciliation and association of the results acquired by experimental procedures and first-principles calculations. The alpha-AgVO3 powders were synthesized using a coprecipitation method at 10, 20, and 30 degrees C. By using a Wulff construction for all relevant low-index surfaces [(100), (010), (001), (110), (011), (101), and (111)], the fine-tuning of the desired morphologies can be achieved by controlling the values of the surface energies, thereby lending a microscopic understanding to the experimental results. The as-synthesized alpha-AgVO3 crystals display a high antibacterial activity against methicillin-resistant Staphylococcus aureus. The results obtained from the experimental and theoretical techniques allow us to propose a mechanism for understanding the relationship between the morphological changes and antimicrobial performance of alpha-AgVO3.

引用

页码：11472 / 11481

页数：10

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