CeO2 nanoparticles/graphene nanocomposite-based high performance supercapacitor

Wang, Yi; Guo, Chunxian; Liu, Jiehua; Chen, Tao; Yang, Hongbin; Li, Chang Ming

doi:10.1039/c1dt10397k

Cited by 246 publications

(135 citation statements)

References 19 publications

(13 reference statements)

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“…The average crystallite size of CeO 2 in nano-CeO 2 / RGO nanohybrid was obtained as *2.5 nm which was relatively higher than the CeO 2 nanoparticles (*0.13 nm). These results are quite similar to the findings reported by other authors [43,44]. Figure 2 elucidates the Raman spectra of GO, RGO, CeO 2 NPs, and the nano-CeO 2 /RGO nanohybrid.…”

Section: Resultssupporting

confidence: 93%

Nano-CeO2 decorated graphene based chitosan nanocomposites as enzymatic biosensing platform: fabrication and cellular biocompatibility assessment

Mohanty

Nayak

2015

Bioprocess Biosyst Eng

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The present study summarizes the designing of a green transducer phase based on nano-cerium oxide (CeO2) decorated reduced graphene oxide (RGO) reinforced chitosan nanocomposites as an effective enzyme immobilizer and bio-sensing matrix for glucose analyte. Also, it scrutinizes the biocompatibility and cell viability of the synthesized nanohybrid with human fibroblastic macrophage cell line. CeO2 nanoparticles (NPs) were successfully grown on graphene nanosheet in the presence of cationic surfactant followed by facile hydrothermal treatment. The eventual growth of synthesized CeO2 nanocrystals on the graphene layer was confirmed from X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman analysis. The biocompatibility of the synthesized nanohybrid was also evident from the MTT assay. Glucose oxidase (GOx) was employed on the green polymer nanocomposites modified FTO electrode to fabricate an enzymatic bioelectrode. The electroanalytical response of the GOx/nano-CeO2/RGO/CS/FTO bioelectrode towards electrooxidation of glucose analyte was investigated by electrochemical impedance (EIS) and cyclic voltammetry (CV) study. The resulting biosensor exhibited a good electrochemical response to glucose within the linear detection range of 0.05-6.5 mM with a low detection limit of 2 μM and a sensitivity of 7.198 μA mM(-1) cm(-2). The bioelectrode also showed good shelf life (~10 weeks) and negligible interfering ability under controlled environment. The obtained results indicate that nano-CeO2/RGO nanohybrid based chitosan nanocomposites achieve a biocompatible biosensing platform for effective enzyme immobilization due to the excellent synergistic effects between the CeO2 nanoparticles and graphene sheet.

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Section: Resultssupporting

confidence: 93%

Nano-CeO2 decorated graphene based chitosan nanocomposites as enzymatic biosensing platform: fabrication and cellular biocompatibility assessment

Mohanty

Nayak

2015

Bioprocess Biosyst Eng

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“…The carbon material can form a homogeneous matrix which will enhance the electronic conductivity and act as a buffer to accommodate the volume change in the inorganic metal oxides. Among the metal oxide nanoparticles, only a very few researchers investigated electrochemical properties of CeO 2 [4,[13][14][15][16]. Furthermore, some of the interesting properties like electrocatalytic, high surface area, non-toxicity, biocompatibility, oxygen storage capacity, chemical stability and high electron transfer capability make CeO 2 a promising material for electrochemical sensor [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 3D porous CeO2/reduced graphene oxide xerogel composite and low level detection of H2O2

Jha

Kumar

Raj

et al. 2014

Electrochimica Acta

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a b s t r a c tA novel synthetic approach has been designed to prepare CeO 2 /reduced graphene oxide (rGO) xerogel composite. The CeO 2 /rGO xerogel composite electrode displays much enhanced performance for the catalytic reduction of H 2 O 2 than the single component CeO 2 . The CeO 2 /rGO modified glassy carbon electrode displayed a wide linear range (60.7 nM-3.0 M), and low level of detection limit (30.40 nM) for H 2 O 2 and much higher sensitivity than that of CeO 2 nanoparticles modified electrode. The sensor fabricated by the xerogel composite was fast, stable, and reliable to the detection of hydrogen peroxide.

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“…Graphene-supported Pd [3], Pt [22], TiO 2 [23], CeO 2 [24], and MnO 2 [25] materials have been recently reported to possess high activities in many catalytic reactions. In the theoretical research field, some studies have predicted that graphene-based catalysts may possess high activity for CO oxidation [26,27].…”

Section: Introductionmentioning

confidence: 99%

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

et al. 2016

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Abstract:Developing an efficient non-noble catalyst for CO oxidation with high catalytic activity remains a challenge for practical applications. In this work, CuO nanorods decorated reduced graphene oxide (RGO) nanocatalysts were prepared via a facile one-step hydrothermal method. The structure and morphology of the as-prepared samples were characterized by XRD, Raman spectroscopy, SEM, TEM, and X-ray photoelectron spectroscopy (XPS). The analysis results show that CuO nanorods were successfully deposited on the surface of RGO sheets with the length of 250-500 nm. The catalytic properties of the as-prepared catalysts for CO oxidation were evaluated by using a microreactor-gas chromatograph (GC) system. The as-prepared RGO-CuO nanocatalysts exhibited high activity for CO oxidation, and the 10 wt % reduced graphene oxide content catalyst can achieve CO total oxidation at 165 • C.

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CeO2 nanoparticles/graphene nanocomposite-based high performance supercapacitor

Cited by 246 publications

References 19 publications

Nano-CeO2 decorated graphene based chitosan nanocomposites as enzymatic biosensing platform: fabrication and cellular biocompatibility assessment

Nano-CeO2 decorated graphene based chitosan nanocomposites as enzymatic biosensing platform: fabrication and cellular biocompatibility assessment

Synthesis of 3D porous CeO2/reduced graphene oxide xerogel composite and low level detection of H2O2

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

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