Photocatalytic Oxidation of Arsenic(III) by Hydrothermal Synthesized TiO2 Loaded on Activated Carbon Fiber

Article Preview

Abstract:

In this paper, nano TiO2 loaded on activated carbon fiber(ACF) was prepared by hydrothermal method as TiO2/ACF photocatalytic.The material crystal structure, the superficial appearance of catalyst, were analyzed and measured by XRD and SEM images.Moreover, it used for photocatalytic oxidation As(Ⅲ).The effect of pH on the oxidation of As(Ⅲ) was studied. The oxidation of As(Ⅲ) efficiency increasing markedly with pH, and the catalytic efficiency is much higher in the alkaline environment than in the acidic environment.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 631-632)

Pages:

176-180

Citation:

Online since:

January 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] J.F. Ferguson, J. Gavis, A review of the arsenic cycle in natural waters, Water Research 6 (1972) 1259-1274.

DOI: 10.1016/0043-1354(72)90052-8

Google Scholar

[2] H. Fei, W.H. Leng, X. Li, Photocatalytic oxidation of arsenite over TiO2: Is superoxide the main oxidant in normal air-saturated aqueous solutions, Environ. Sci. Technol. 45 (2011) 4532-4539.

DOI: 10.1021/es200574h

Google Scholar

[3] P.K. Dutta, A.K. Ray, V.K. Sharma, Adsorption of arsenate and arsenite on titanium dioxide suspensions, Colloid and Interface Science 278 (2004) 270-275.

DOI: 10.1016/j.jcis.2004.06.015

Google Scholar

[4] R.K. Dhar, Y. Zheng, J. Rubenstone, A rapid colorimetric method for measuring arsenic concentrations in groundwater, Analytica Chimica Acta 526 (2004) 203-209.

DOI: 10.1016/j.aca.2004.09.045

Google Scholar

[5] Yu Jiaguo, Wang Guohong, Cheng Bei, Effects of hydrothermal temperature and time on the photocatalytic activity and microstructures of bimodal mesoporous TiO2 powders, Applied Catalysis B: Environmenta 69 (2007) 171-180.

DOI: 10.1016/j.apcatb.2006.06.022

Google Scholar

[6] M.E. Pena, G.P. Korfiatis, M. Patel, Adsorption of As(V) and As(III) by nanocrystalline titanium dioxide, Water Research 39 (2005) 2327-2337.

DOI: 10.1016/j.watres.2005.04.006

Google Scholar

[7] H. Lee, W. Choi, Photocatalytic oxidation of arsenite in TiO2 suspension: kinetics and mechanisms. Environ. Sci. Technol. 36 (2002) 3872-3878.

DOI: 10.1021/es0158197

Google Scholar