Preparation of Hierarchical Microsphere BiOBr Catalyst and Its Photocatalytic Disinfection Performance Under Visible Light

doi:10.13560/j.cnki.biotech.bull.1985.2016.08.035

Abstract

Abstract: The BiOBr,three-dimensional hierarchical microsphere,was successfully fabricated by one-pot solvent-thermal method,and was characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）and UV-vis. Performance of photocatalytic disinfection of Escherichia coli using BiOBr under visible light irradiation was studied,also the disinfection mechanism was explored. The results showed that the BiOBr was microsphere with diameter of about 2 µm,and had solid visible light response. Sterilization experiments showed that the BiOBr presented the enhanced photocatalytic inactivation of gram-negative bacterium E. coli under visible light irradiation（λ> 420 nm）. The disinfection rate reached over 70% with the 0.5 mg/mL photocatalytic materials for 12 h visible light irradiation. Reactive capture experiments demonstrated that 3D hierarchical microspheres BiOBr destroyed bacterial cell membranes and walls via hole oxidation,therefore achieved the purpose of killing bacteria under visible light. ^?

Key words: BiOBr, visible light irradiation, photocatalytic disinfection, Escherichia coli

WANG Ya, LIN Li, LI Bei-bei, HUANG Man-hong, CHEN Liang. Preparation of Hierarchical Microsphere BiOBr Catalyst and Its Photocatalytic Disinfection Performance Under Visible Light[J]. Biotechnology Bulletin, 2016, 32(8): 242-248.

References

[1] 吴东海, 尤宏, 刘巍巍, 等. 载银TiO 2 薄膜制备及其光催化灭菌性能[J]. 化工学报, 2009, 60（7）：1693-1699.
[2] 董丽丽, 黄骏雄. 饮用水消毒副产物及其分析技术[J]. 化学进展, 2005, 17（2）：350-358.
[3] Koivunen J, Tanski H. Inactivation of enteric microorganisms with chemical disinfectants, UV irradiation and combined chemical/UV treatments[J]. Water Research, 2005, 39（8）：1519-1526.
[4] 常青云, 贺泓, 曲久辉, 等. Ag-Ce/AlPO 4 催化剂在水中催化杀菌的影响因素[J]. 催化学报, 2008, 29（3）：215-220.
[5] 崔玉民, 王洪涛, 二氧化钛光催化技术在污水处理领域中应用[J]. 水处理技术, 2009, 35（4）：9-12.
[6] 刘佳佳, 王军, 张霞, 等. 一种新型铋基光催化剂的合成及其可见光催化性能[J]. 环境工程学报, 2015, 9（6）：2923-2930.
[7] Matsunaga T, Tomoda R, Nakajima T, et al. Continuous sterilization system that uses photo semiconductor powders[J]. Applied and Environmental Microbiology, 1988, 54（6）：1330-1333.
[8] Chang W, Lin W, Zulkarnain Z, et al. Bactericidal activity of TiO 2 photocatalyst in aqueous media：toward a solar-assisted water disinfection system[J]. Environmental Science and Technology, 1994, 28：934-938
[9] Huang Z, Maness P, Blake D, et al. Bactericidal mode of titanium dioxide photocatalysis[J]. Journal of Photochemistry and Photobiology A：Chemistry, 2000, 130：163-170.
[10] Yang L, Yu L, Madhumita B, et al. Photocatalytic oxidation of paracetamol：Dominant reactants, intermediates, and reaction mechanisms[J]. Environmental Science & Technology, 2009, 43（2）：460-465.
[11] Zhao H, Yu H, Quan X, et al. Fabrication of atomic single layer graphitic-C3N4 and its high performance of photocatalytic disinfection under visible light irradiation[J]. Applied Catalysis B：Environmental, 2014（152）：46-50.
[12] Wang W, Yu Y, An T, et al. Visible-light-driven photocatalytic inactivation of E. coli K-12 by bismuth vanadate nanotubes：Bactericidal performance and mechanism[J]. Environ Sci Technol, 2012（46）：4599-4606.
[13] 刘红旗, 顾晓娜, 陈锋, 等. BiOCl纳米片微球的制备及其形成机理[J]. 催化学报, 2011, 32（1）：129-134.
[14] Liu H, Cao W, Su Y, et al. Synthesis, characterization and photocatalytic performance of novel visible light induced Ag/BiOI[J]. Applied Catalysis B：Environmental, 2012, 111：271-279.
[15] Zhang D, Wen M, Jiang B, et al. Ionothermal synthesis of hierarchical BiOBr microspheres for water treatment[J]. Journal of Hazardous Materials, 2012, 211：104-111.
[16] Shi X, Chen X, Chen X, et al. Solvothermal synthesis of BiOI hierarchical spheres with homogeneous sizes and their high photocatalytic performance[J]. Material Letters, 2012, 68：296-299.
[17] Cheng H, Huang B, Wang Z, et al. One-pot Miniemulsion-Mediated route to BiOBr hollow microspheres with highly efficient photocatalytic activity[J]. Chemistry-A European Journal, 2011（17）：8039-8043.
[18] 林立, 黄满红, 龙立平, 等. 分级微球BiOBr和BiOI的制备及光催化活性比较[J]. 应用化工, 2014, 43（8）：1377-1380.
[19] 张丽, 刘又年. 光催化杀菌机理研究进展[J]. 湖南理工学院学报：自然科学版, 2011, 24（3）：62-65.
[20] Benabbou AK, Derriche Z, Felix C, et al. Photocatalytic inactivation of Escherichia coli-Effect of concentration of TiO 2 and microorganism, nature, and intensity of UV irradiation[J]. Applied Catalysis B-Environmental, 2007, 76（3）：257-263.
[21] Matsunaga T, Tomada R, Nakajima T, et al. Photo-electro chemical sterilization of microbial-cells by semiconductor powders[J]. FEMS Microbiol Lett, 1985（29）：211-214.
[22] Saito T, Iwase T, Morioka T. Mode of photocatalytic bactericidal action of powdered semiconductor TiO 2 on mutans streptococci[J]. J Photochem Photobiol B, 1992（14）：369-379.
[23] 郭健, 胡学康, 王爱民, 等. NiO/SrBi 2 O 4 可见光催化杀菌的研究[J]. 环境化学, 2007, 26（2）：207-209.
[24] Lu Z, Zhou L, Zhang Z, et al. Cell damage induced by photo-catalysis of TiO 2 thin films[J]. Langmuir, 2009, 19（21）：8765.
[25] Li Y, Ma M, Wang X, et al. Inactivated properties of activated carbon-supported TiO 2 nanoparticles for bacteria and kinetic study[J]. Journal of Environmental Sciences-China, 2008, 20：1527-1533.
[26] Ren J, Wang W, Zhang L, et al. Photocatalytic inactivation of bacteria by photocatalyst Bi 2 WO 6 under visible light[J]. Catalysis Communications, 2009, 10：1940-1943.