Abstract
The tin dioxide (SnO2) nanoparticles were synthesized by using a simple hydrothermal route in the presence of tetrapropyl ammonium bromide (TPAB) as a surfactant. Accordingly, the titanium mesh based SnO2 catalyst electrode was prepared. The morphologies and structures of SnO2 nanostructures were characterized by scanning electron microscopy and X-ray diffraction spectrometry. The influences of reactant concentration, reaction temperature and time on the morphology of the products were investigated in detail. The electrocatalytic performance of SnO2 for the reduction of nitrobenzene with zinc was studied. Possible formation process and growth mechanism for such hierarchical SnO2 nanostructures have been proposed based on the experimental results. The results showed that when the concentration of NaOH was 0.5 mol•L-1, the hydrothermal reaction temperature was 160 ℃, hydrothermal reaction time was 9 h, the as-prepared SnO2 catalyst appeared thorny spheric particles consisting of nanosheets with the particle size as small as 17 nm. Compared with Pt electrode, the catalyst electrode exhibited higher catalytic activity toward the electrochemical reduction of nitrobenzene. The conversion rate of nitrobenzene was up to 74% and the maximum discharge power density was 21.9 mW•cm-2, which are much better than those with platinum electrode. The main reduction products of nitrobenzene were aniline, p-phenetidine and p-chloroaniline.
Graphical Abstract
Keywords
Tin dioxide, Nanometer, Electrocatalysis, Nitrobenzene, Reduction
Publication Date
2017-06-29
Online Available Date
2017-03-30
Revised Date
2017-03-16
Received Date
2016-11-05
Recommended Citation
Xu-guo TU, Xiang-yu MA, Rui-nan HE, Xiao-juan WANG, Chen LING, Yun-xia SUN, Song CHEN.
Electrocatalysis of NanoTin Dioxide in the Battery Reaction of Zinc-Nitrobenzene[J]. Journal of Electrochemistry,
2017
,
23(3): 356-363.
DOI: 10.13208/j.electrochem.161049
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol23/iss3/13
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