Enhanced photocatalytic degradation of methylene blue by WO<inf>3</inf>/ZnWO<inf>4</inf> composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure

© 2015 Elsevier B.V. ZnWO<inf>4</inf> nanoparticles were successfully synthesized by microwave-solvothermal method. Subsequently, the incipient wetness procedure was used to load WO<inf>3</inf> into ZnWO<inf>4</inf> matrix and to form the WO<inf>3</inf>...

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Main Authors: Yanee Keereeta, Somchai Thongtem, Titipun Thongtem
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/54239
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spelling th-cmuir.6653943832-542392018-09-04T10:09:57Z Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure Yanee Keereeta Somchai Thongtem Titipun Thongtem Chemical Engineering © 2015 Elsevier B.V. ZnWO<inf>4</inf> nanoparticles were successfully synthesized by microwave-solvothermal method. Subsequently, the incipient wetness procedure was used to load WO<inf>3</inf> into ZnWO<inf>4</inf> matrix and to form the WO<inf>3</inf>/ZnWO<inf>4</inf> composites with different morphologies. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Raman spectrophotometry, and electron microscopy (EM) were used to characterize the phase, oxidation state, composites, and morphology. According to the Scherrer formula and the Brunauer-Emmett-Teller (BET) adsorption, average crystallite sizes of the nanoparticles are less than 30nm and 45nm, respectively, larger than the direct measurement by TEM. The 3.23eV direct energy gap (E<inf>g</inf>) and the 478nm emission wavelength of 3mol% WO<inf>3</inf>/ZnWO<inf>4</inf> composites were determined by UV-visible absorption and photoluminescence (PL) spectroscopy. The photocatalytic degradation of methylene blue (C<inf>16</inf>H<inf>18</inf>N<inf>3</inf>SCl) was greatly enhanced by WO<inf>3</inf> loading in ZnWO<inf>4</inf> matrix to form WO<inf>3</inf>/ZnWO<inf>4</inf> composites. In this research, 3mol% WO<inf>3</inf>-loaded ZnWO<inf>4</inf> offered the best photodegradation performance of methylene blue at 36.21% within 300min and 55.54% within 480min under UV light irradiation. 2018-09-04T10:09:57Z 2018-09-04T10:09:57Z 2015-11-01 Journal 1873328X 00325910 2-s2.0-84934343596 10.1016/j.powtec.2015.06.046 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84934343596&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/54239
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemical Engineering
spellingShingle Chemical Engineering
Yanee Keereeta
Somchai Thongtem
Titipun Thongtem
Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
description © 2015 Elsevier B.V. ZnWO<inf>4</inf> nanoparticles were successfully synthesized by microwave-solvothermal method. Subsequently, the incipient wetness procedure was used to load WO<inf>3</inf> into ZnWO<inf>4</inf> matrix and to form the WO<inf>3</inf>/ZnWO<inf>4</inf> composites with different morphologies. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Raman spectrophotometry, and electron microscopy (EM) were used to characterize the phase, oxidation state, composites, and morphology. According to the Scherrer formula and the Brunauer-Emmett-Teller (BET) adsorption, average crystallite sizes of the nanoparticles are less than 30nm and 45nm, respectively, larger than the direct measurement by TEM. The 3.23eV direct energy gap (E<inf>g</inf>) and the 478nm emission wavelength of 3mol% WO<inf>3</inf>/ZnWO<inf>4</inf> composites were determined by UV-visible absorption and photoluminescence (PL) spectroscopy. The photocatalytic degradation of methylene blue (C<inf>16</inf>H<inf>18</inf>N<inf>3</inf>SCl) was greatly enhanced by WO<inf>3</inf> loading in ZnWO<inf>4</inf> matrix to form WO<inf>3</inf>/ZnWO<inf>4</inf> composites. In this research, 3mol% WO<inf>3</inf>-loaded ZnWO<inf>4</inf> offered the best photodegradation performance of methylene blue at 36.21% within 300min and 55.54% within 480min under UV light irradiation.
format Journal
author Yanee Keereeta
Somchai Thongtem
Titipun Thongtem
author_facet Yanee Keereeta
Somchai Thongtem
Titipun Thongtem
author_sort Yanee Keereeta
title Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
title_short Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
title_full Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
title_fullStr Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
title_full_unstemmed Enhanced photocatalytic degradation of methylene blue by WO&lt;inf&gt;3&lt;/inf&gt;/ZnWO&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
title_sort enhanced photocatalytic degradation of methylene blue by wo&lt;inf&gt;3&lt;/inf&gt;/znwo&lt;inf&gt;4&lt;/inf&gt; composites synthesized by a combination of microwave-solvothermal method and incipient wetness procedure
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84934343596&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/54239
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