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Photocatalytical Inactivation of Enterococcus faecalis from Water Using Functional Materials Based on Natural Zeolite and Titanium Dioxide 被引量：2

由天然沸石和二氧化钛制备的功能材料光催化抑制水中粪肠球菌活性(英文)
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摘要 The functional materials based on natural zeolite （clinoptilolite）, TiO2-zeolite and Ag-TiO2-zeolite have been successfully synthesized by solid-state reaction in fast-hydrothermal conditions. The obtained functional materials were investigated by X-ray diffraction （XRD）, FT-1R （Fourier transform infrared） spectroscopy, DRUV-VIS （diffuse reflectance ultraviolet-visible） spectroscopy, BET （Brunauer-Emmett-Teller） and SEM/EDX （scanning electron microscope/energy dispersive X-ray spectrometer） analyses. The XRD results indicated that the clinoptilolite structure has a good thermal stabilization after the fast-hydrothermal treatment. Also, the high specific surface area about 92.55 m^2.g^-1 was noticed for Ag-TiO2-zeolite functional material. The presence of dopants was evidenced from EDX spectra. The enhanced bactericidal activity of Ag-TiO2-zeolite catalyst is proved through damaging of Enterococcusfaecalis colonies under visible irradiation, at different material doses and irradiation times. The functional materials based on natural zeolite(clinoptilolite),TiO2-zeolite and Ag-TiO2-zeolite have been successfully synthesized by solid-state reaction in fast-hydrothermal conditions.The obtained functional materials were investigated by X-ray diffraction(XRD),FT-IR(Fourier transform infrared)spectroscopy,DRUV-VIS(diffuse reflectance ultraviolet-visible)spectroscopy,BET(Brunauer-Emmett-Teller)and SEM/EDX(scanning electron microscope/energy dispersive X-ray spectrometer)analyses.The XRD results indicated that the clinoptilolite structure has a good thermal stabilization after the fast-hydrothermal treatment.Also,the high specific surface area about 92.55 m2·g 1was noticed for Ag-TiO2-zeolite functional material.The presence of dopants was evidenced from EDX spectra.The enhanced bactericidal activity of Ag-TiO2-zeolite catalyst is proved through damaging of Enterococcus faecalis colonies under visible irradiation,at different material doses and irradiation times.
作者 Cornelia Bandas(Ratiu) Corina Orha Corina Misca Carmen Lazau Paula Sfirloaga Sorin Olariu
机构地区 National Institute for Research and Development in Microtechnologies National Institute for Research and Development in Electrochemistry and Condensed Matter Banat’s University of Agricultural Sciences and Veterinary Medicine of Timisoara Medical and Pharmaceutical University "Victor Babes"
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第1期38-43,共6页 中国化学工程学报（英文版）
基金 Supported by the Sectoral Operational Programme Human Resources Development(SOP HRD)Financed from the European Social Fund the Romanian Government under the Contract Number POSDRU/89/1.5/S/63700
关键词 titanium dioxide COMPOSITE catalytic properties Enterococcusfaecalis 天然沸石 功能材料 二氧化钛 水热条件 粪肠球菌 光催化 X射线光谱仪 Ag-TiO2
分类号 X703 [环境科学与工程—环境工程]
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参考文献26

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同被引文献23

  • 1周晚琴,余长林,樊启哲,魏龙福,陈建钗,YU Jimmy C.超声波制备介孔结构的氮掺杂TiO_2纳米晶及其可见光催化性能(英文)[J].催化学报,2013,34(6):1250-1255. 被引量：15
  • 2王奎,钱晓良,方彩霞,刘石明.负载型光催化剂TiO_2/Al_2O_3的制备与研究[J].应用化工,2004,33(6):17-20. 被引量：8
  • 3黄冠,郭灿城.甲壳素铁卟啉制备及其催化空气氧化环己烷研究[J].分子催化,2005,19(1):36-40. 被引量：9
  • 4张彭义,余刚,蒋展鹏.半导体光催化剂及其改性技术进展[J].环境科学进展,1997,5(3):1-10. 被引量：237
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  • 6Sung K C,Kim S,Lim S K,et al. Photoeatalytie compari- son of TiO2 nanopartieles and eleetrospun TiO2 nanofibers : Effects of mesoporosity and interpartiele charge transfer [J]. Phys Chem C,2010,114(39) :16475-16480.
  • 7Linsebigler A L, Lu G, John T, et al. Photoeatalysis on TiOz surfaces: Principles, mechanisms, and selected re- suits [ J ]. Chemical Reviews, 1995,95 ( 3 ) :735-738.
  • 8Sano T, Puzenat E, Guillard C, et al. Improvement of pho- tocatalytic degradation activity of visible- light- responsive TiO2 by aid of ultraviolet-light pretreatment [ J ]. J Phys Chem C,2009,113(14) :5535-5540.
  • 9Iharaa T, Miyoshia M, Iriyamab Y, et al. Visible-light-ac- tive titanium oxide photocatalyst realized by an oxygen-de- ficient structure and by nitrogen doping [ J ]. Applied Ca- talysis B : Environmental,2003,42:403-409.
  • 10Kim S, Lee S. Visible light-induced photocatalytic oxida- tion of 4-chlorophenol and dichloroacetate in nitrided Pt- TiO2 aqueous suspensions [ J ]. Journal of Photochemistry and Photobiology A: Chemistry,2009,203 (2) : 145-150.

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Chinese Journal of Chemical Engineering
2014年 第1期

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