Cu2O@reduced graphene oxide composite for removal of contaminants from water and supercapacitors

Li, Baojun; Cao, Huaqiang; Yin, Geping; Lu, Yuexiang; Yin, Jiefu

doi:10.1039/c1jm12135a

Cited by 202 publications

(108 citation statements)

References 39 publications

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“…The 2-D peak of Cu 2 O/RGO composites appears at 2707 cm -1 , shifts to the higher wave number value of, and becomes broader for an increasing number of layers with respect to single-layer graphene (2-D, 2680 cm -1 ). The peak at 2938 cm -1 (D+D′) is attributed to defects, due to the combination of two phonons with different [17,18]. The data suggest the formation of Cu 2 O/RGO composites.…”

Section: Resultsmentioning

confidence: 75%

Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials

Yan

Yang

et al. 2015

J Solid State Electrochem

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Cuprous oxide nanoparticles uniformly dispersed on reduced graphene oxide (RGO) sheets were prepared by a polyol process using copper acetate and graphite oxide as precursors in diethylene glycol solution. The size of Cu 2 O particles can be controlled by changing the heat treatment time. With prolonging the heat treatment time at 140°C from 0 to 30 min, the size of Cu 2 O particles on the reduced graphene oxide sheets decreases from 500 to 4 nm. The electrochemical activity of the Cu 2 O/RGO composites in potassium ferricyanide solution shows strongly sensitive on the size of Cu 2 O nanoparticles. Moreover, the smallest size of composite-based electrode shows excellent electrochemical activities for electrocatalytic oxidation of glucose in alkaline medium. The proposed biosensor can be applied to the quantification of glucose with a high sensitivity and durability, wide linear range, a low detection limit of 0.1 μM, and ease of construction, thus is promising for the future development of non-enzymatic glucose sensors.

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Section: Resultsmentioning

confidence: 75%

Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials

Yan

Yang

et al. 2015

J Solid State Electrochem

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“…However, the wide application of traditional Cu 2 O nanocrystals is limited by many factors, including the poor stability in oxidizing environments, rapid recombination of photo-generated electrons and holes, and transformation of crystal planes under reaction process [6][7][8]. Therefore, various materials (n-type semiconductors [9], noble metals [10,11], and carbon materials [12,13]) are employed to modify the traditional Cu 2 O crystals, for the purpose of photo-catalytic performance enhancement. Graphene or reduced graphene oxide (rGO), a promising material with a range of unique properties (superior mobility of charge carriers, extremely high specific surface area and excellent conductivity) [14][15][16], has recently acted as a flexible conducting support to encapsulate Cu 2 O nanocrystals in many fields [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Engineering the Cu2O–reduced graphene oxide interface to enhance photocatalytic degradation of organic pollutants under visible light

Zou

Zhang

Liu

et al. 2016

Applied Catalysis B: Environmental

160

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“…There are only a few reports on this aspect [35][36][37], however, in which reduced graphene oxide/cuprous oxide (RGO/Cu 2 O) composites were usually prepared from copper salts with graphene oxide [33-35, 38, 39] …”

Section: Introductionmentioning

confidence: 99%

Direct synthesis of RGO/Cu2O composite films on Cu foil for supercapacitors

Dong

Wang

Zhao

et al. 2014

Journal of Alloys and Compounds

106

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Reduced graphene oxide/cuprous oxide (RGO/Cu2O) composite films were directly synthesized on the surface of copper foil substrates through a straight redox reaction between GO and Cu foil via a hydrothermal approach. Characterization of the resultant composites with X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and field emission scanning electron microscope (FESEM) confirms the formation of Cu2O and reduction of GO, in which Cu2O nanoparticles were well covered by RGO. The resultant composites (referred to as RGO/Cu2O/Cu) were directly used as electrodes for supercapacitors, and their electrochemical performance was assessed by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrometry (EIS) in 1 M KOH aqueous solution. A specific capacitance of 98.5 F g−1 at 1 A g−1 was obtained, which is much higher than that of pure Cu2O prepared under the same conditions, due to the presence of RGO. Keywordssupercapacitors, synthesis, rgo, cu2o, composite, films, cu, foil, direct Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsDong, X., Wang, K., Zhao, C., Qian, X., Chen, S., Li, Z., Liu, H. & Dou, S. (2014) at 1 A g -1 was obtained, which is much higher than that of pure Cu 2 O prepared under the same conditions, due to the presence of RGO.

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Cu2O@reduced graphene oxide composite for removal of contaminants from water and supercapacitors

Cited by 202 publications

References 39 publications

Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials

Size-controlled synthesis of Cu2O nanoparticles on reduced graphene oxide sheets and their application as non-enzymatic glucose sensor materials

Engineering the Cu2O–reduced graphene oxide interface to enhance photocatalytic degradation of organic pollutants under visible light

Direct synthesis of RGO/Cu2O composite films on Cu foil for supercapacitors

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