Preparation and Modification of Supported Nano Cu/Fe Bimetal Alloy in Ethanol-water Solution and Its Reduction-chlorination Property for Trichloroethylene

Chem. J. Chinese Universities

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Preparation and Modification of Supported Nano Cu/Fe Bimetal Alloy in Ethanol-water Solution and Its Reduction-chlorination Property for Trichloroethylene

ZHANG Huan¹*, JIN Zhao-Hui², LI Tie-Long²

1. Key Laboratory of Hollow Fiber Membrane Materials and Membrane Process, Ministry of Education, College of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China;
2. College of Environmental Science and Engineering, Nankai University, Tianjin 300170, China

Received:2007-08-14 Revised:1900-01-01 Online:2007-12-10 Published:2007-12-10
Contact: ZHANG Huan

Abstract

Abstract: Supported nano Cu/Fe bimetal alloy with a spherical nanocluster structure was synthesized in ethanol-water solution by using KBH₄ as the reducing agent and Cu as the complex metal when micro-scale graphite was used as a support material. This supported nano bimetal alloy showed the better reductive dechlorination property for trichloroethylene than the supported nano Fe⁰ in the solution. TCE of 10 mg/L was completely removed in 5 h when Fe⁰ dosage was 10 g/L. The cationic surfactant cetyltrimethyl ammonium bromide(CTAB) was used to modify the surface of the supported nano bimetal alloy. The reduction effect of the material for TCE was enhanced after being modified. During the 36 d of continuous dechlorination, the modified supported nano bimetal alloy shows a highly stable property for TCE removal. The experiment results show that 10.2 mg/L TCE could be completely reduced in 7 h by the supported nano bimetal alloy in the 36th day.

Key words: Ethanol-water system, Supported nano Cu/Fe bimetal alloy, Reduction-dechlorination, Trichloroethylene, Surface modification

CLC Number:

O614.81
X52

TrendMD:

ZHANG Huan¹*, JIN Zhao-Hui², LI Tie-Long². Preparation and Modification of Supported Nano Cu/Fe Bimetal Alloy in Ethanol-water Solution and Its Reduction-chlorination Property for Trichloroethylene[J]. Chem. J. Chinese Universities, doi: .

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Preparation and Modification of Supported Nano Cu/Fe Bimetal Alloy in Ethanol-water Solution and Its Reduction-chlorination Property for Trichloroethylene

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