Blue-shift of UV emission in ZnO/graphene composites

Yang, Jing; Zhao, Xiaoting; Shan, Xiaonan; Fan, Hougang; Yang, Lili; Zhang, Yongjun; Li, Xiuyan

doi:10.1016/j.jallcom.2012.12.098

Cited by 57 publications

(24 citation statements)

References 43 publications

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“…The D/G intensity value of the nanocomposites (0.99) increased compared with that of the GO (0.91) and rGO (0.96). The nanocomposite exhibits the highest D/G value due to the increasing disorder of sp 2 contributed by the presence of ZnO in the composites [33,34]. Compared with rGO, the D band was blue-shifted by 4 cm −1 while the G band was blue-shifted by 10 cm −1 in nanocomposites.…”

Section: Resultsmentioning

confidence: 97%

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Omar

Ming

Hafiz

et al. 2014

International Journal of Photoenergy

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This work reports on synthesis of zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites in the presence of diethylenetriamine (DETA) via a facile microwave method. The X-ray diffraction (XRD) patterns of the nanocomposites correspond to the ZnO hexagonal phase wurtzite structure. The high-resolution transmission electron microscopy (HRTEM) images revealed that the ZnO nanorods, with an average length : diameter ratio of 10, were successfully deposited on the rGO sheets. Under the irradiation of sunlight, the nanocomposites showed enhanced adsorption-photocatalysis by more than twofold and photocurrent response by sixfold compared to the ZnO. The excellent photoactivity performance of the nanocomposites is contributed by smaller ZnO nanorod and the presence of rGO that acts as a photosensitizer by transferring electrons to the conduction band of ZnO within the nanocomposite during sunlight illumination.

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Section: Resultsmentioning

confidence: 97%

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Omar

Ming

Hafiz

et al. 2014

International Journal of Photoenergy

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“…The fact that no diffraction peaks from carbon species were observed can be attributed to the low amount of GR (1 wt%) in the samples 18,19 and to the relatively low diffraction intensity of GR. 31 The presence of GR in the nanocomposites was identied by TEM and XPS analysis (see below). The addition of AgI nanoparticles to the ZnO and ZnO/ GR nanocomposites show diffraction patterns at 2q values of 23.9 , 39.2 , and 46.0 , which could be related to the crystal planes (111), (220), and (311), respectively, of the cubic AgI structure (JCPDS no 01-0503).…”

Section: Resultsmentioning

confidence: 99%

Graphene-based plasmonic nanocomposites for highly enhanced solar-driven photocatalytic activities

et al. 2019

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“…1) [37,38]. The shifting to higher (red-shift) [39] or lower (blue-shift) [40] wavelengths is determined by the work function value of metal oxides compare to pristine graphene layers.…”

Section: Resultsmentioning

confidence: 99%

Co₃O₄/graphene nanocomposite: pre-graphenization synthesis and photocatalytic investigation of various magnetic nanostructures

Soofivand

Salavati‐Niasari

2015

RSC Adv.

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For the first time, a novel technique of preparing cobalt (II) acetyl acetonate [Co(acac)2] nanostructures has been developed by using the sublimation process. It is found that the sublimation temperature has a main role in creating of special morphology and size of [Co(acac)2] and Co3O4 nanostructures. The nano-sized Co3O4 were obtained by thermal decomposition of [Co(acac)2] nanostructures at 400 O C for 120 min. The produced nanostructures were characterized by powder X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) analysis, Raman spectroscopy, transmission and scanning electron microscopy (TEM, SEM). Magnetic and optical properties of the final product were measured at room temperature by a vibrating sample magnetometer (VSM) and UV-vis spectroscopy, respectively. The Co3O4 nanostructures anchored onto graphene sheets and Co3O4/graphene (Co3O4/GR) nanocomposite synthesized through pre-graphenization, successfully. To investigate the catalytic properties of Co3O4/G nanocomposites, photooxidation of methyl orange (MO) was performed. The performed photocatalytic test shows that the methyl orange degradation was about 54.9% after 75 min irradiation of UV light.

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Blue-shift of UV emission in ZnO/graphene composites

Cited by 57 publications

References 43 publications

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Graphene-based plasmonic nanocomposites for highly enhanced solar-driven photocatalytic activities

Co₃O₄/graphene nanocomposite: pre-graphenization synthesis and photocatalytic investigation of various magnetic nanostructures

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Blue-shift of UV emission in ZnO/graphene composites

Cited by 57 publications

References 43 publications

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

Graphene-based plasmonic nanocomposites for highly enhanced solar-driven photocatalytic activities

Co3O4/graphene nanocomposite: pre-graphenization synthesis and photocatalytic investigation of various magnetic nanostructures

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Co₃O₄/graphene nanocomposite: pre-graphenization synthesis and photocatalytic investigation of various magnetic nanostructures