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Vol. 27 No. 1 (2015): Vol 27 Issue 1

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Efficiently Applicability of Synthetic Cu-TiO2 in Tetrachloroethene, Trichloroethene and 1,1,1-Trichloroethane Removal in Aqueous Phase under VUV Irradiation

https://doi.org/10.14233/ajchem.2015.16690
Landry Biyoghe Bi Ndong
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Murielle Primaelle Ibondou
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Xiaoliang Wu
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Shuguang Lu
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Zhaofu Qiu
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Qian Sui
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
Serge Maurice Mbadinga
State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China

Corresponding Author(s) : Shuguang Lu

lvshuguang@ecust.edu.cn; xuminhui@outlook.com

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1

Abstract

Cu-TiO2 nano-sheets has been tested by degrading tetrachloroethene, trichloroethene and 1,1,1-trichloroethane in the aqueous phase under VUV illumination. The photo-degradation results revealed the efficient photolysis of these harmful chemicals under VUV irradiation and the addition of synthetic Cu-TiO2 remarkably enhanced their degradation according to the higher degradation rate observed. Moreover, the fast degradation rate of nitrobenzene, a probe of hydroxyl radicals (•OH), over Cu-TiO2 suggesting the high concentration of •OH generated in VUV/Cu-TiO2 system. Cu-TiO2 has been synthesized by simply hydrothermal solution containing tetrabutyl titanate, hydrofluoric acid and cupric nitrate and characterized by using XRD, BET, TEM and XPS. The characterization results showed that the synthesized doped TiO2 was in anatase form and consisted of well-defined sheet-shaped structures. It was also showed that the surface state of the synthesized TiO2 was not modified after Cu doping. It can be suggested that Cu can be used to enhance the photo-catalytic activity of TiO2 nano-sheets for chlorinated solvent remediation in contaminated groundwater.

Keywords

Cu doping Titanium dioxide Chlorinated solvent pollutants VUV illumination Groundwater remediation
Biyoghe Bi Ndong, L., Primaelle Ibondou, M., Wu, X., Lu, S., Qiu, Z., Sui, Q., & Maurice Mbadinga, S. (2014). Efficiently Applicability of Synthetic Cu-TiO2 in Tetrachloroethene, Trichloroethene and 1,1,1-Trichloroethane Removal in Aqueous Phase under VUV Irradiation. Asian Journal of Chemistry, 27(1), 60–66. https://doi.org/10.14233/ajchem.2015.16690
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