Citation: LU Chan, WU Ke-Qi, FU Lin-Feng, GUO Xi-Shan, ZHU Song-Ming. Reduced Graphene Oxide Modified Y-Branched TiO₂ Nanotubes Photoelectrode:Preparation and Photoelectrocatalytic Oxidation of Ammonia[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(2): 262-268. doi: 10.11862/CJIC.2017.024 shu

Reduced Graphene Oxide Modified Y-Branched TiO₂ Nanotubes Photoelectrode:Preparation and Photoelectrocatalytic Oxidation of Ammonia

College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China

Corresponding author: GUO Xi-Shan, guoxs@zju.edu.cn
Received Date: 16 June 2016
Revised Date: 31 October 2016

Figures(9)

The rGO/Y-TiO₂ nanotubes (rGO/Y-TiO₂NTs)electrodes with different rGO loading were fabricated by a three-step anodic oxidation, followed by a one-step cyclic voltammetric electrodeposition technique. Field emission scanning electron microscopy (FESEM), X-ray energy dispersive spectrometry (EDS), X-ray diffraction (XRD), UV-Vis diffuse reflection spectrum (UV-Vis DRS)and Raman spectrum were used to characterize the morphology, element composition and crystal form of the samples. Photocurrent responses and the performance of photoelectrocatalytic (PEC)oxidation of ammonia were investigated under 1.0 V bias potential using rGO/Y-TiO₂NTs electrodes prepared under different cyclic voltammetric cycle numbers. The results indicated that the highly ordered Y-TiO₂NTs possessed the crystal form of anatase phases with high surface area. The smooth and transparent rGO film was electrodeposited on the surface of Y-TiO₂NTs. The photoelectrocatalytic efficiency of ammonia using rGO/Y-TiO₂NTs electrode was improved by the modification of rGO film, and reached 95.9% in 30 min when the electrodeposition cycle number was 30, which was 1.3 time higher than that of the pristine Y-TiO₂NTs electrodes.
- Y-branched TiO₂ nanotubes,
- reduced graphene oxide,
- photoelectrocatalytic oxidation,
- ammonia
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Reduced Graphene Oxide Modified Y-Branched TiO₂ Nanotubes Photoelectrode:Preparation and Photoelectrocatalytic Oxidation of Ammonia