Effect of pH on the synthesis of BiVO4 to improve photocatalysis and antimicrobial properties

被引:7
作者
Rodrigues, Murillo Henrique de Matos [1 ]
Borges, Kellen Cristina Mesquita [1 ]
Tello, Ana Cristina Mora [2 ,3 ]
Roca, Roman Alvarez [2 ]
Goncalves, Rosana de Fatima [1 ]
da Silva, Alberico B. F. [3 ]
Longo, Elson [2 ]
Godinho, Mario Junior [1 ]
机构
[1] Univ Fed Goias Reg Catalao, Inst Quim, BR-75704020 Catalao, GO, Brazil
[2] Univ Fed Sao Carlos, CDMF LIEC, Chem Dpto, BR-13565905 Sao Carlos, SP, Brazil
[3] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
关键词
Bismuth vanadate; Phase conversion; Scheelite monoclinic; Zircon tetragonal; pH dependence; DOPED BIVO4; HIERARCHICAL STRUCTURES; HYDROTHERMAL SYNTHESIS; MICROWAVE SYNTHESIS; OPTICAL-PROPERTIES; DEGRADATION; NANOPARTICLES; CLINOBISVANITE; FABRICATION; STABILITY;
D O I
10.1016/j.matchemphys.2022.127198
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The present work deals with studies of the obtaining structures Monoclinic Scheelita (MS) and Tetragonal Zir-conia (TZ) of BiVO4 through an experimental procedure. First, the characterization of the samples evaluates their structural and electronic properties. Then, from the analysis of X-ray diffraction (XRD) for pH 1, occurs the formation of the TZ phase, which with higher processing times, occurs the transformation to the MS phase, different from the pH 5 at which the MS phase was formed, with higher processing times, occurs a formation of a second phase (TZ). The temperature, pressure, and pH values of the hydrothermal treatment contribute to the organization of the crystalline system. For the solar photocatalysis and microbial tests, the MS phase presented the best results because it has a higher absorption in the visible phase, defined morphologies, and low bandgap values.
引用
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页数:12
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