Cuprous oxide nanoparticles dispersed on reduced graphene oxide as an efficient electrocatalyst for oxygen reduction reaction

Yan, Xiaoyan; Tong, Xili; Zhang, Yuefei; Han, Xiaodong; Wang, Ying-Yong; Jin, Guojun; Qin, Yong; Guo, Xiang‐Yun

doi:10.1039/c2cc17537a

Cited by 196 publications

(74 citation statements)

References 25 publications

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“…Similar features and trends are observed for the reduction of GO by L-ascorbic acid [25]. The results obtained for the X-ray diffraction (XRD) shows no graphite diffraction peaks are present in the XRD pattern, indicating that the regular stack of GO has been broken [26]. The morphology of graphene as circled in the image is observed as a flaky texture reflecting its layered microstructure and Cu particles are dispersed on the surface of graphene or imbedded into the graphene sheets [27], [28].…”

Section: Resultssupporting

confidence: 73%

Evaluation of the Toxic Potential of Graphene Copper Nanocomposite (GCNC) in the Third Instar Larvae of Transgenic Drosophila melanogaster (hsp70-lacZ)Bg9

et al. 2013

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Graphene, a two-dimensional carbon sheet with single-atom thickness, have attracted the scientific world for its potential applications in various field including the biomedical areas. In the present study the graphene copper nanocomposite (GCNC) was synthesized, characterized and evaluated for its toxic potential on third instar larvae of transgenic Drosophila melanogaster (hsp70-lacZ)Bg9. The synthesized GCNC was analyzed by X-ray diffraction (XRD), scanning/transmission electron microscopy (SEM/TEM), atomic force microscopy (AFM), and fourier transform infrared spectroscopy (FTIR). The GCNC in 0.1% DMSO was sonicated for 10 min and the final concentration of 0.033, 0.099, 0.199 and 3.996 µg/µl of diet were established. The third instar larvae were allowed to feed on it separately for 24 and 48 hrs. The hsp70 expression was measured by O-nitrophenyl-β-D-galactopyranoside assay, tissue damage by trypan blue exclusion test and β-galactosidase activity was monitored by in situ histochemical β-galactosidase staining. Oxidative stress was monitored by performing lipid peroxidation assay and total protein estimation. Ethidium bromide/acridine orange staining was performed on midgut cells for apoptotic index and the comet assay was performed for the DNA damage. The results of the present study showed that the exposure of 0.199 and 3.996 µg/µl of GCNC were toxic for 24 hr of exposure and for 48 hr of exposure: 0.099, 0.199 and 3.996 µg/µl of GCNC was toxic. The dose of 0.033 µg/µl of GCNC showed no toxic effects on its exposure to the third instar larvae for 24 hr as well as 48 hrs. This dose can be considered as No Observed Adverse Effect Level (NOAEL).

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Section: Resultssupporting

confidence: 73%

Evaluation of the Toxic Potential of Graphene Copper Nanocomposite (GCNC) in the Third Instar Larvae of Transgenic Drosophila melanogaster (hsp70-lacZ)Bg9

et al. 2013

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“…Recently, a class of nanocarbon/ transition metal oxides or sulfides hybrid catalysts for ORR in alkaline media were extensively studied in Dai's group at Stanford University by rGO, which includes Co 3 O 4 /N-rGO [31], MnCo 2 O 4 /N-rGO [42], Co 1− xS/rGO [44], etc. Besides manganeseor cobalt-based catalysts, a large variety of metal oxides have also been studied as ORR catalyst in alkaline solution, including Cu 2 O/rGO [45,46] and Fe 3 O 4 /N-rGO aerogel [47].…”

Section: Rgo/oxide Hybrids Catalystsmentioning

confidence: 99%

GO/rGO as Advanced Materials for Energy Storage and Conversion

Gao

2015

Graphene Oxide

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Recently, GO/rGO has become promising platforms for advanced materials in energy related technologies. Extensive applications of rGO have been explored in a variety of electrochemical energy storage and conversion technologies (e.g., fuel cells, metal-air batteries, supercapacitors, and water splitting devices). In particular, GO/rGO was studied as efficient components in catalysts in fuel cells and metal-air batteries for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), one pair of the most important electrochemical reactions. The promising applications are primarily due to their unique physical and chemical properties, such as high surface area, access to large quantities, tunable electronic/ionic conductivity, unique graphitic basal plane structure, and the easiness of modification or functionalization. Chemical doping with heteroatoms (e.g., N, B, P, or S) into graphitic domains can tune the electronic properties, provide more active sites, and enhance the interaction between carbon structures and oxygen molecules. Meanwhile, GO/ rGO has demonstrated excellent performances in electric double-layer capacitors (EDLCs, also known as supercapacitors or ultracapacitors) with excellent volumetric and gravimetric capacitance densities as well as feasibility in design and fabrications. Additionally, rGO holds great promise to be high-performance anode materials in lithium-ion batteries due to its favorable interactions with Li. In this chapter, we will discuss the uses of GO/rGO derivatives in these energy conversion and storage technologies, providing insights and guidance for further optimization and design of multifunctional materials for energy applications.

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“…Nevertheless, pristine transition metal oxides usually exhibit limited ORR activities and insufficient durability, probably due to their low electrical conductivity and agglomeration during operation. The loading of transition metal oxides on conducting high surface carbon supports (carbon blacks, activated carbon, porous carbon, carbon nanotubes, graphene and N-doped graphene) has been used to overcome these limitations [19,21,[25][26][27][28][29][30][31]. In this way, considering that both carbon materials and transition metal oxides have considerable ORR activities, it is attractive to study the ORR performances of their composites.…”

Section: Introductionmentioning

confidence: 99%

Oxygen reduction to hydrogen peroxide on Fe3O4 nanoparticles supported on Printex carbon and Graphene

Barros

Wei

Zhang

et al. 2015

Electrochimica Acta

147

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Cuprous oxide nanoparticles dispersed on reduced graphene oxide as an efficient electrocatalyst for oxygen reduction reaction

Cited by 196 publications

References 25 publications

Evaluation of the Toxic Potential of Graphene Copper Nanocomposite (GCNC) in the Third Instar Larvae of Transgenic Drosophila melanogaster (hsp70-lacZ)Bg9

Evaluation of the Toxic Potential of Graphene Copper Nanocomposite (GCNC) in the Third Instar Larvae of Transgenic Drosophila melanogaster (hsp70-lacZ)Bg9

GO/rGO as Advanced Materials for Energy Storage and Conversion

Oxygen reduction to hydrogen peroxide on Fe3O4 nanoparticles supported on Printex carbon and Graphene

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