Crystal quality and optical property of MnWO4 nanoparticles synthesized by microwave-assisted method

Pham Van Hanh; Luc Huy Hoang; Pham Van Hai; Nguyen Van Minh; Xiang Bai Chen; In Sang Yang

doi:10.1016/j.jpcs.2012.11.004

Crystal quality and optical property of MnWO₄ nanoparticles synthesized by microwave-assisted method

Pham Van Hanh, Luc Huy Hoang, Pham Van Hai, Nguyen Van Minh, Xiang Bai Chen, In Sang Yang

Department of Physics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

MnWO₄ nanoparticles were prepared using a microwave-assisted method followed by low-temperature treatment. The crystal quality and optical property of the MnWO₄ nanoparticles were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet-visible (UV-vis) absorption spectroscopy. Our results show that good crystal quality MnWO₄ nanoparticles can be prepared by the microwave-assisted method, and best crystal quality nanoparticles can be obtained with synthesizing pH value of 7. Furthermore, by calcination treatments, crystal quality can be further improved with less defect states and the particle size increases when the calcining temperature increases from 150 to 600 °C. In addition, our study shows that the MnWO₄ nanoparticles have strong absorption in the visible light region, suggesting that these nanoparticles are promising for photocatalytic applications.

Original language	English
Pages (from-to)	426-430
Number of pages	5
Journal	Journal of Physics and Chemistry of Solids
Volume	74
Issue number	3
DOIs	https://doi.org/10.1016/j.jpcs.2012.11.004
State	Published - Mar 2013

Bibliographical note

Funding Information:
The authors would like to thank the Vietnam's National Foundation for Science and Technology Development (NAFOSTED) , Grant 103.02.2010.04, for financial support. X.B.C. acknowledges the support by Konkuk University of 2012, I.S.Y. was supported by Leading Foreign Research Institute Recruitment Program, the Ministry of Education, Science and Technology ( 2011-00267 ).

Keywords

A. Nanostructures
B. Chemical synthesis
C. Raman spectroscopy
D. Defects
D. Optical properties

Access to Document

10.1016/j.jpcs.2012.11.004

Cite this

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title = "Crystal quality and optical property of MnWO4 nanoparticles synthesized by microwave-assisted method",

abstract = "MnWO4 nanoparticles were prepared using a microwave-assisted method followed by low-temperature treatment. The crystal quality and optical property of the MnWO4 nanoparticles were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet-visible (UV-vis) absorption spectroscopy. Our results show that good crystal quality MnWO4 nanoparticles can be prepared by the microwave-assisted method, and best crystal quality nanoparticles can be obtained with synthesizing pH value of 7. Furthermore, by calcination treatments, crystal quality can be further improved with less defect states and the particle size increases when the calcining temperature increases from 150 to 600 °C. In addition, our study shows that the MnWO4 nanoparticles have strong absorption in the visible light region, suggesting that these nanoparticles are promising for photocatalytic applications.",

keywords = "A. Nanostructures, B. Chemical synthesis, C. Raman spectroscopy, D. Defects, D. Optical properties",

author = "{Van Hanh}, Pham and {Huy Hoang}, Luc and {Van Hai}, Pham and {Van Minh}, Nguyen and Chen, {Xiang Bai} and Yang, {In Sang}",

note = "Funding Information: The authors would like to thank the Vietnam's National Foundation for Science and Technology Development (NAFOSTED) , Grant 103.02.2010.04, for financial support. X.B.C. acknowledges the support by Konkuk University of 2012, I.S.Y. was supported by Leading Foreign Research Institute Recruitment Program, the Ministry of Education, Science and Technology ( 2011-00267 ).",

year = "2013",

month = mar,

doi = "10.1016/j.jpcs.2012.11.004",

language = "English",

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T1 - Crystal quality and optical property of MnWO4 nanoparticles synthesized by microwave-assisted method

AU - Van Hanh, Pham

AU - Huy Hoang, Luc

AU - Van Hai, Pham

AU - Van Minh, Nguyen

AU - Chen, Xiang Bai

AU - Yang, In Sang

N1 - Funding Information: The authors would like to thank the Vietnam's National Foundation for Science and Technology Development (NAFOSTED) , Grant 103.02.2010.04, for financial support. X.B.C. acknowledges the support by Konkuk University of 2012, I.S.Y. was supported by Leading Foreign Research Institute Recruitment Program, the Ministry of Education, Science and Technology ( 2011-00267 ).

PY - 2013/3

Y1 - 2013/3

N2 - MnWO4 nanoparticles were prepared using a microwave-assisted method followed by low-temperature treatment. The crystal quality and optical property of the MnWO4 nanoparticles were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet-visible (UV-vis) absorption spectroscopy. Our results show that good crystal quality MnWO4 nanoparticles can be prepared by the microwave-assisted method, and best crystal quality nanoparticles can be obtained with synthesizing pH value of 7. Furthermore, by calcination treatments, crystal quality can be further improved with less defect states and the particle size increases when the calcining temperature increases from 150 to 600 °C. In addition, our study shows that the MnWO4 nanoparticles have strong absorption in the visible light region, suggesting that these nanoparticles are promising for photocatalytic applications.

AB - MnWO4 nanoparticles were prepared using a microwave-assisted method followed by low-temperature treatment. The crystal quality and optical property of the MnWO4 nanoparticles were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet-visible (UV-vis) absorption spectroscopy. Our results show that good crystal quality MnWO4 nanoparticles can be prepared by the microwave-assisted method, and best crystal quality nanoparticles can be obtained with synthesizing pH value of 7. Furthermore, by calcination treatments, crystal quality can be further improved with less defect states and the particle size increases when the calcining temperature increases from 150 to 600 °C. In addition, our study shows that the MnWO4 nanoparticles have strong absorption in the visible light region, suggesting that these nanoparticles are promising for photocatalytic applications.

KW - A. Nanostructures

KW - B. Chemical synthesis

KW - C. Raman spectroscopy

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KW - D. Optical properties

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