3D hierarchical Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O and Zn{sub 3}(VO{sub 4}){sub 2} microspheres: Synthesis, characterization and photoluminescence

Journal Article · Sun Jan 15 04:00:00 EST 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.10.020· OSTI ID:22212381

Wang, Miao ^[1]; Shi, Yujun; Jiang, Guoqing ^[1]

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1. School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019 (China)

Highlights: Black-Right-Pointing-Pointer 3D hierarchical microspheres of Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O were gained with glycine-assisted hydrothermal method. Black-Right-Pointing-Pointer Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O can be transformed into Zn{sub 3}(VO{sub 4}){sub 2} with the similar morphologies by calcination. Black-Right-Pointing-Pointer The PL properties of Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O and Zn{sub 3}(VO{sub 4}){sub 2} were studied. -- Abstract: Via a simple glycine-assisted hydrothermal route, large-scale 3D hierarchical Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O microspheres have been fabricated. Their purity, crystalline phase, morphologies and thermal stability were characterized by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), Fourier transform IR (FTIR), scanning electron microscopy (SEM) and thermogravimetry-differential scanning calorimetry (TG-DSC). The SEM results indicate that the microspheres are self-assembled by numerous nanoflakes with mean thickness of 100 nm. Some factors influencing the morphologies of the Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O micro-/nanostructures have been systematically investigated, as well as quantity of glycine and the reaction time. The possible mechanism of the crystal growth and assembled procedure were also proposed. The as-prepared Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O can be transformed into Zn{sub 3}(VO{sub 4}){sub 2} with the similar morphologies by calcination in air at 600 Degree-Sign C. Furthermore, the photoluminescent properties of both Zn{sub 3}(OH){sub 2}V{sub 2}O{sub 7}{center_dot}2H{sub 2}O and Zn{sub 3}(VO{sub 4}){sub 2} were studied and exhibited different spectra.

• OSTI ID: 22212381
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 1 Vol. 47; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
CALORIMETRY
CRYSTAL GROWTH
FOURIER TRANSFORMATION
GLYCINE
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
INORGANIC COMPOUNDS
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
VANADATES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY