Controlled Growth of WO(3) Nanostructures with Three Different Morphologies and Their Structural, Optical, and Photodecomposition Studies.

Nanoscale Research Letters
S RajagopalO Yu Khyzhun

Abstract

Tungsten trioxide (WO(3)) nanostructures were synthesized by hydrothermal method using sodium tungstate (Na(2)WO(4).2H(2)O) alone as starting material, and sodium tungstate in presence of ferrous ammonium sulfate [(NH(4))(2)Fe(SO(4))(2).6H(2)O] or cobalt chloride (CoCl(2).6H(2)O) as structure-directing agents. Orthorhombic WO(3) having a rectangular slab-like morphology was obtained when Na(2)WO(4).2H(2)O was used alone. When ferrous ammonium sulfate and cobalt chloride were added to sodium tungstate, hexagonal WO(3) nanowire clusters and hexagonal WO(3) nanorods were obtained, respectively. The crystal structure and orientation of the synthesized products were studied by X-ray diffraction (XRD), micro-Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM), and their chemical composition was analyzed by X-ray photoelectron spectroscopy (XPS). The optical properties of the synthesized products were verified by UV-Vis and photoluminescence studies. A photodegradation study on Procion Red MX 5B was also carried out, showing that the hexagonal WO(3) nanowire clusters had the highest photodegradation efficiency.

References

Jul 13, 2005·Chemical Communications : Chem Comm·Zhanjun GuJiannian Yao
Nov 28, 2006·The Journal of Physical Chemistry. B·Zhanjun GuJiannian Yao
Feb 14, 2008·Physical Chemistry Chemical Physics : PCCP·Johan BergeldDinko Chakarov
Oct 22, 2008·Physical Chemistry Chemical Physics : PCCP·Masahiro Miyauchi

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Citations

Jun 22, 2011·ACS Applied Materials & Interfaces·Maria TrapatseliEmmanuel Spanakis
Jun 30, 2011·Nanoscale Research Letters·Malcolm GovenderAndrew Forbes
Nov 5, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yossy WicaksanaRose Amal
May 20, 2016·Applied Biochemistry and Biotechnology·Abdelrahman M YassinElsayed E Hafez
May 23, 2017·ACS Applied Materials & Interfaces·Sang Youn ChaeYun Jeong Hwang
May 17, 2018·Royal Society Open Science·Kunyapat ThummavichaiYanqiu Zhu

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Methods Mentioned

BETA
scanning
transmission
X-ray

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