Characterizations of in situ grown ceria nanoparticles on reduced graphene oxide as a catalyst for the electrooxidation of hydrazine

被引:243
作者
Srivastava, Manish [1 ]
Das, Ashok Kumar [1 ]
Khanra, Partha [1 ]
Uddin, Md Elias [1 ]
Kim, Nam Hoon [1 ]
Lee, Joong Hee [1 ,2 ]
机构
[1] Chonbuk Natl Univ, Dept BIN Fus Technol, WCU Program, Jeonju 561756, Jeonbuk, South Korea
[2] Chonbuk Natl Univ, Dept Polymer & Nano Engn, BIN Fus Res Team, Jeonju 561756, Jeonbuk, South Korea
基金
新加坡国家研究基金会;
关键词
ELECTROCATALYTIC OXIDATION; MAGNETIC-PROPERTIES; CARBON; ELECTRODES; REDUCTION; COMPOSITE; SHEETS; PERFORMANCE; FABRICATION; NANOSHEETS;
D O I
10.1039/c3ta11311f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ceria (CeO2) nanoparticles were grown on reduced graphene oxide (RGO) via the in situ reduction of graphene oxide (GO) in the presence of cerium nitrate and CTAB, followed by a one step hydrothermal treatment. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-Vis), Raman spectroscopy (RS), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) were employed to characterize the samples. The characterization suggests that the ammonia-assisted hydrothermal method is a facile and advantageous route to synthesize CeO2-RGO nanocomposites compared to the widely used method utilising hydrazine hydrate as the reducing reagent. TEM investigations revealed that the CeO2 nanoparticles with an average size of similar to 14 nm were dispersed on the layers of RGO. The catalytic activity of the CeO2-RGO nanocomposites towards the electrooxidation of hydrazine was further investigated by cyclic voltammetry measurements. The results obtained suggest that compared to bare CeO2 nanoparticles, the CeO2-RGO nanocomposite exhibits remarkably enhanced electrocatalytic activity, due to the synergistic effects between the CeO2 nanoparticles and RGO.
引用
收藏
页码:9792 / 9801
页数:10
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