Self-assembled ZnGa{sub 2}O{sub 4}–RGO nanocomposites and their enhanced adsorption and photocatalytic performance in water treatment

Journal Article · Mon Dec 15 00:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.09.018· OSTI ID:22420689

Huang, K. ^[1]; Zhao, X. S.; Li, Y. F.; Xu, X.; Liang, C.; Fan, D. Y.; Yang, H. J. ^[2]; Wang, Y. G. ^[2]

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1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876 (China)
2. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876 (China)

Highlights: • ZnGa{sub 2}O{sub 4}–RGO nanocomposites by a self-assembly approach under facile solvothermal condition. • ZnGa{sub 2}O{sub 4} NPs have a well-controlled size and uniform distribution. • The water treatment process is formed by two successive parts: adsorption and photocatalytic degradation. • The content of RGO sheets is crucial for optimizing the photocatalytic activity with a key value of 5%. - Abstract: ZnGa{sub 2}O{sub 4} nanoparticles (NPs) have been successfully anchored onto reduced graphene oxide (RGO) nanosheets by a self-assembly approach under facile solvothermal condition. The as-synthesized ZnGa{sub 2}O{sub 4}–RGO nanocomposites were investigated by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The results reveal that ZnGa{sub 2}O{sub 4} NPs with a well-controlled size and uniform distribution were successfully assembled onto RGO sheets. Moreover, both methylene blue (MB) and rhodamine B (RhB) were employed as model pollutants to evaluate the ability of as-prepared ZnGa{sub 2}O{sub 4}–RGO nanocomposites for wastewater treatment. The content of RGO sheets was found to be crucial for optimizing the photocatalytic activity of various nanocomposites with a key value of 5% beyond which the adsorption ability of ZnGa{sub 2}O{sub 4}–RGO nanocomposites for dyes dominates the process of water treatment.

• OSTI ID: 22420689
• Journal Information: Materials Research Bulletin, Vol. 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
FIELD EMISSION
GALLIUM OXIDES
GRAPHENE
METHYLENE BLUE
NANOCOMPOSITES
NANOPARTICLES
NANOSTRUCTURES
OXIDES
PHOTOCATALYSIS
SCANNING ELECTRON MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
WASTE WATER
WATER TREATMENT
X-RAY DIFFRACTION
ZINC COMPOUNDS