Template-free hydrothermal synthesis and high photocatalytic activity of ZnWO4 nanorods

Bin Gao; Huiqing Fan; Xiaojun Zhang; Lixun Song

doi:10.1016/j.mseb.2012.05.022

Template-free hydrothermal synthesis and high photocatalytic activity of ZnWO₄ nanorods

Bin Gao, Huiqing Fan, Xiaojun Zhang, Lixun Song

School of Materials Sience and Engineering

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

35 Scopus citations

Abstract

ZnWO₄ nanorods are successfully synthesized by a template-free hydrothermal method, and are characterized in detail by X-ray diffractometer (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). The results show that the ZnWO₄ nanorods with wolframite structure are well-crystallized single crystallites. The crystallinity of the products is influenced by the pH value of initial precursor suspension. The width and length of the synthesized samples increase with hydrothermal reaction temperature. The photocatalytic efficiency of the ZnWO₄ nanorods for degradation of methylene blue (MB) in aqueous solution under UV light irradiation declines greatly with increasing crystallinity. The ZnWO₄ nanorods prepared at pH of 4 have the best activity in photo-degradation of MB. After six recycles, photocatalytic activity loss of the catalyst is not obvious.

Original language	English
Pages (from-to)	1126-1132
Number of pages	7
Journal	Materials Science and Engineering: B
Volume	177
Issue number	13
DOIs	https://doi.org/10.1016/j.mseb.2012.05.022
State	Published - 1 Aug 2012

Keywords

Hydrothermal synthesis
Methylene blue
Photocatalytic

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title = "Template-free hydrothermal synthesis and high photocatalytic activity of ZnWO4 nanorods",

abstract = "ZnWO4 nanorods are successfully synthesized by a template-free hydrothermal method, and are characterized in detail by X-ray diffractometer (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). The results show that the ZnWO4 nanorods with wolframite structure are well-crystallized single crystallites. The crystallinity of the products is influenced by the pH value of initial precursor suspension. The width and length of the synthesized samples increase with hydrothermal reaction temperature. The photocatalytic efficiency of the ZnWO4 nanorods for degradation of methylene blue (MB) in aqueous solution under UV light irradiation declines greatly with increasing crystallinity. The ZnWO4 nanorods prepared at pH of 4 have the best activity in photo-degradation of MB. After six recycles, photocatalytic activity loss of the catalyst is not obvious.",

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author = "Bin Gao and Huiqing Fan and Xiaojun Zhang and Lixun Song",

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T1 - Template-free hydrothermal synthesis and high photocatalytic activity of ZnWO4 nanorods

AU - Gao, Bin

AU - Fan, Huiqing

AU - Zhang, Xiaojun

AU - Song, Lixun

PY - 2012/8/1

Y1 - 2012/8/1

N2 - ZnWO4 nanorods are successfully synthesized by a template-free hydrothermal method, and are characterized in detail by X-ray diffractometer (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). The results show that the ZnWO4 nanorods with wolframite structure are well-crystallized single crystallites. The crystallinity of the products is influenced by the pH value of initial precursor suspension. The width and length of the synthesized samples increase with hydrothermal reaction temperature. The photocatalytic efficiency of the ZnWO4 nanorods for degradation of methylene blue (MB) in aqueous solution under UV light irradiation declines greatly with increasing crystallinity. The ZnWO4 nanorods prepared at pH of 4 have the best activity in photo-degradation of MB. After six recycles, photocatalytic activity loss of the catalyst is not obvious.

AB - ZnWO4 nanorods are successfully synthesized by a template-free hydrothermal method, and are characterized in detail by X-ray diffractometer (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED). The results show that the ZnWO4 nanorods with wolframite structure are well-crystallized single crystallites. The crystallinity of the products is influenced by the pH value of initial precursor suspension. The width and length of the synthesized samples increase with hydrothermal reaction temperature. The photocatalytic efficiency of the ZnWO4 nanorods for degradation of methylene blue (MB) in aqueous solution under UV light irradiation declines greatly with increasing crystallinity. The ZnWO4 nanorods prepared at pH of 4 have the best activity in photo-degradation of MB. After six recycles, photocatalytic activity loss of the catalyst is not obvious.

KW - Hydrothermal synthesis

KW - Methylene blue

KW - Photocatalytic

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U2 - 10.1016/j.mseb.2012.05.022

DO - 10.1016/j.mseb.2012.05.022

M3 - 文章

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SN - 0921-5107

VL - 177

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JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

IS - 13

ER -

Template-free hydrothermal synthesis and high photocatalytic activity of ZnWO₄ nanorods

Abstract

Keywords

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