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Citation: ZHU Chuangao, WANG Fengwu, XU Mai, FANG Wenyan. Preparation of NanO-crystalline SnO₂/TiO₂ Electrode and Its ElectrO-catalytic Degradation Toward m-Nitrophenol[J]. Chinese Journal of Applied Chemistry, ;2013, 30(5): 567-572. doi: 10.3724/SP.J.1095.2013.20398 shu

Preparation of NanO-crystalline SnO₂/TiO₂ Electrode and Its ElectrO-catalytic Degradation Toward m-Nitrophenol

Department of Chemistry, Huainan Normal College, Huainan 232001, China

Received Date: 10 September 2012
Revised Date: 15 October 2012

The precursor Sn_0.75Ti(OCH₂CH₂OH)_(7-x) was synthesized by electrolysis of titanium and tin in glycol solution. Nano-crystalline SnO₂/TiO₂ powder was prepared by direct hydrolysis from the precursor and then calcined for 2 h at 400℃. The metal alkoxide was characterized by FT-IR and Raman spectra. The mono-dispersed structure and the diameter of nano-SnO₂/TiO₂ were observed by XRD and SEM.The results showed that SnO₂/TiO₂ of 100~200 nm was obtained in organic solution. The highly active nano-SnO₂/TiO₂ electrode was prepared using electro-synthesis and sol-gel method. The cyclic voltammetry was used to study the redox behavior and electro-catalytic activity of the nano-SnO₂/TiO₂ electrode in HCl/m-NO₂C₆H₄OH solution. The current density of the electrode increased obviously and reached to 143 × 10^-3 A/cm². The electrode potential difference of the redox peaks decreased obviously. The COD removal rate of m-nitrophenol reached to 86.1% and the SnO₂/TiO₂ electrode had high electro-catalytic activities.
- alkoxide complex,
- nano-SnO₂/TiO₂,
- electro-catalysis,
- m-nitrophenol
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Preparation of NanO-crystalline SnO₂/TiO₂ Electrode and Its ElectrO-catalytic Degradation Toward m-Nitrophenol