AgBr-Coupled TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants
A series of AgBr/TiO2 visible photocatalysts with heterojunction structure was synthesized using Ti(OC4H9)4, KBr, and AgNO3 as precursors. The phase composition, particle morphology and size, microstructures, and absorbance of these photocatalysts were characterized by X-ray diffraction, transmissio...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/254201 |
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| _version_ | 1832565233092132864 |
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| author | Jianjun Liu Yingchun Yu Zhixin Liu Shengli Zuo Baoshan Li |
| author_facet | Jianjun Liu Yingchun Yu Zhixin Liu Shengli Zuo Baoshan Li |
| author_sort | Jianjun Liu |
| collection | DOAJ |
| description | A series of AgBr/TiO2 visible photocatalysts with heterojunction structure was synthesized using Ti(OC4H9)4, KBr, and AgNO3 as precursors. The phase composition, particle morphology and size, microstructures, and absorbance of these photocatalysts were characterized by X-ray diffraction, transmission electron microscope (TEM), high-resolution TEM, and UV-vis spectra. It was found that the coupled AgBr/TiO2 was an effective photocatalyst to degrade the methylene blue under visible light irradiation, compared with the other noncoupled photocatalysts of AgBr, AgBr/P25, and P25. The photocatalytic activities of AgBr/TiO2 increase first and then decrease with increasing the mass ratio of mAgNO3/mTiO2 and the photocatalyst with the mass ratio of 3.35 has the highest photocatalytic activity. The results showed that the coupled photocatalyst has the particle size of about 15 nm with homogeneous dispersion and has the strongest absorption in whole UV-vis light region (250∼800 nm) originated from the synergetic effect of heterostructured AgBr/TiO2. The coupled AgBr/TiO2 photocatalyst can keep stable photocatalytic activity after five-circle runs. |
| format | Article |
| id | doaj-art-53d793a12add435e971b3302c357a7da |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-53d793a12add435e971b3302c357a7da2025-02-03T01:08:59ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/254201254201AgBr-Coupled TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye PollutantsJianjun Liu0Yingchun Yu1Zhixin Liu2Shengli Zuo3Baoshan Li4State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaA series of AgBr/TiO2 visible photocatalysts with heterojunction structure was synthesized using Ti(OC4H9)4, KBr, and AgNO3 as precursors. The phase composition, particle morphology and size, microstructures, and absorbance of these photocatalysts were characterized by X-ray diffraction, transmission electron microscope (TEM), high-resolution TEM, and UV-vis spectra. It was found that the coupled AgBr/TiO2 was an effective photocatalyst to degrade the methylene blue under visible light irradiation, compared with the other noncoupled photocatalysts of AgBr, AgBr/P25, and P25. The photocatalytic activities of AgBr/TiO2 increase first and then decrease with increasing the mass ratio of mAgNO3/mTiO2 and the photocatalyst with the mass ratio of 3.35 has the highest photocatalytic activity. The results showed that the coupled photocatalyst has the particle size of about 15 nm with homogeneous dispersion and has the strongest absorption in whole UV-vis light region (250∼800 nm) originated from the synergetic effect of heterostructured AgBr/TiO2. The coupled AgBr/TiO2 photocatalyst can keep stable photocatalytic activity after five-circle runs.http://dx.doi.org/10.1155/2012/254201 |
| spellingShingle | Jianjun Liu Yingchun Yu Zhixin Liu Shengli Zuo Baoshan Li AgBr-Coupled TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants International Journal of Photoenergy |
| title | AgBr-Coupled
TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants |
| title_full | AgBr-Coupled
TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants |
| title_fullStr | AgBr-Coupled
TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants |
| title_full_unstemmed | AgBr-Coupled
TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants |
| title_short | AgBr-Coupled
TiO2: A Visible Heterostructured Photocatalyst for Degrading Dye Pollutants |
| title_sort | agbr coupled tio2 a visible heterostructured photocatalyst for degrading dye pollutants |
| url | http://dx.doi.org/10.1155/2012/254201 |
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