NiO/TiO2 Nanoparticles for Photocatalytic Disinfection of Bacteria under Visible Light

被引：34

作者：

Chockalingam, Karunakaran ^{[1
]}

Ganapathy, Abiramasundari ^{[1
]}

Paramasivan, Gomathisankar ^{[1
]}

Govindasamy, Manikandan ^{[1
]}

Viswanathan, Anandi ^{[2
]}

机构：

[1] Annamalai Univ, Dept Chem, Annamalainagar 608002, Tamil Nadu, India

[2] Annamalai Univ, Div Microbiol, Rajah Muthiah Med Coll, Annamalainagar 608002, Tamil Nadu, India

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2011年 / 94卷 / 08期

关键词：

ESCHERICHIA-COLI; ANTIMICROBIAL PROPERTIES; TITANIUM-DIOXIDE; TIO2; POWDERS; INACTIVATION; DEGRADATION; WATER; ABATEMENT; AG-TIO2; ANATASE;

D O I：

10.1111/j.1551-2916.2011.04403.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

NiO-TiO2 composite nanoparticles have been prepared by a modified ammonia-evaporation-induced synthetic method, sintered at 450 degrees C and characterized by powder X-ray diffraction, energy-dispersive X-ray spectroscopy, scanning electron microscopy, UV-visible diffuse reflectance spectroscopy, photoluminescence spectroscopy, and electrochemical impedance spectroscopy. Doping shifts the optical absorption edge to the visible region but increases the charge-transfer resistance and decreases the capacitance. Under visible light, the composite nanoparticles effectively catalyze the Escherichia coli inactivation. The prepared oxide is selective in photocatalysis; with UV light, its photocatalytic activity to degrade sunset yellow, rhodamine B, and methylene blue dyes is less than that of the undoped one. However, it degrades phenol faster than TiO2 P25.

引用

页码：2499 / 2505

页数：7

共 32 条

[1] Photocatalytic inactivation of E. coli in surface water using immobilised nanoparticle TiO2 films [J].

Alrousan, Dheaya M. A. ;

Dunlop, Patrick S. M. ;

McMurray, Trudy A. ;

Byrne, J. Anthony .

WATER RESEARCH, 2009, 43 (01) :47-54

[2]

Barsoukov E, 2005, IMPEDANCE SPECTROSCOPY: THEORY, EXPERIMENT, AND APPLICATIONS, 2ND EDITION, pXII

[3] Linear correlation between inactivation of E-coli and OH radical concentration in TiO2 photocatalytic disinfection [J].

Cho, M ;

Chung, H ;

Choi, W ;

Yoon, J .

WATER RESEARCH, 2004, 38 (04) :1069-1077

[4] Photocatalytic microbial inactivation over Pd doped SnO2 and TiO2 thin films [J].

Erkan, Arcan ;

Bakir, Ufuk ;

Karakas, Gurkan .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2006, 184 (03) :313-321

[5] Heterogeneous photocatalytic degradation of organic contaminants over titanium dioxide: A review of fundamentals, progress and problems [J].

Gaya, Umar Ibrahim ;

Abdullah, Abdul Halim .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2008, 9 (01) :1-12

[6] Microbiological disinfection of water and air by photocatalysis [J].

Guillard, Chantal ;

Bui, Thu-Hoai ;

Felix, Caroline ;

Moules, Vincent ;

Lina, Bruno ;

Lejeune, Philippe .

COMPTES RENDUS CHIMIE, 2008, 11 (1-2) :107-113

[7] Catalytic activity of commercial of TiO2 powders for the abatement of the bacteria (E-coli) under solar simulated light:: Influence of the isoelectric point [J].

Gumy, D ;

Morais, C ;

Bowen, P ;

Pulgarin, C ;

Giraldo, S ;

Hajdu, R ;

Kiwi, J .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 63 (1-2) :76-84

[8] Tailored titanium dioxide photocatalysts for the degradation of organic dyes in wastewater treatment: A review [J].

Han, Fang ;

Kambala, Venkata Subba Rao ;

Srinivasan, Madapusi ;

Rajarathnam, Dharmarajan ;

Naidu, Ravi .

APPLIED CATALYSIS A-GENERAL, 2009, 359 (1-2) :25-40

[9] Design, Fabrication, and Modification of Nanostructured Semiconductor Materials for Environmental and Energy Applications [J].

Hu, Xianluo ;

Li, Guisheng ;

Yu, Jimmy C. .

LANGMUIR, 2010, 26 (05) :3031-3039

[10] Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2 using EPR [J].

Hurum, DC ;

Agrios, AG ;

Gray, KA ;

Rajh, T ;

Thurnauer, MC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (19) :4545-4549

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