Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid
TiO2 has been widely used as a key catalyst in photocatalytic reactions; it also shows good catalytic activity for esterification reactions. Different sulfated M-TiO2 nanoparticles (M = Ag, Au, Rh, and Pt) were prepared by photodeposition and ultrasonic methods. The results show that the noble metal...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2016/4618924 |
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| author | Yu Niu Pan Huang Fuying Li Kai Yang Jinbei Yang Renzhang Wang Cheng Lin Ting Qiu |
| author_facet | Yu Niu Pan Huang Fuying Li Kai Yang Jinbei Yang Renzhang Wang Cheng Lin Ting Qiu |
| author_sort | Yu Niu |
| collection | DOAJ |
| description | TiO2 has been widely used as a key catalyst in photocatalytic reactions; it also shows good catalytic activity for esterification reactions. Different sulfated M-TiO2 nanoparticles (M = Ag, Au, Rh, and Pt) were prepared by photodeposition and ultrasonic methods. The results show that the noble metal nanoparticles, which were loaded onto a TiO2 surface, slightly affected the crystal phase and particle size of TiO2. Among all the catalysts, SO42-/Au-TiO2 exhibited the best catalytic activity in the esterification reaction for the synthesis of citric acid n-butyl acetate and in the decomposition of methyl orange, as confirmed by a high conversion rate of up to 98.2% and 100% degradation rate, respectively. This can be attributed to an increase in the Lewis acidity of the catalyst and increased separation efficiency of electron-hole pairs. This superior catalyst has great potential applications in esterification reactions and wastewater treatments. |
| format | Article |
| id | doaj-art-52ecfc8d342f4066ade42904d8f02e89 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-52ecfc8d342f4066ade42904d8f02e892025-08-20T03:36:34ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2016-01-01201610.1155/2016/46189244618924Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric AcidYu Niu0Pan Huang1Fuying Li2Kai Yang3Jinbei Yang4Renzhang Wang5Cheng Lin6Ting Qiu7School of Chemical Engineering, Fuzhou University, Fuzhou 350116, ChinaSchool of Chemical Engineering, Fuzhou University, Fuzhou 350116, ChinaCollaborative Innovation Center of Clean Coal Gasification Technology, Sanming University, Sanming 365004, ChinaResearch Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, ChinaSchool of Chemical Engineering, Fuzhou University, Fuzhou 350116, ChinaCollaborative Innovation Center of Clean Coal Gasification Technology, Sanming University, Sanming 365004, ChinaSchool of Chemical Engineering, Fuzhou University, Fuzhou 350116, ChinaSchool of Chemical Engineering, Fuzhou University, Fuzhou 350116, ChinaTiO2 has been widely used as a key catalyst in photocatalytic reactions; it also shows good catalytic activity for esterification reactions. Different sulfated M-TiO2 nanoparticles (M = Ag, Au, Rh, and Pt) were prepared by photodeposition and ultrasonic methods. The results show that the noble metal nanoparticles, which were loaded onto a TiO2 surface, slightly affected the crystal phase and particle size of TiO2. Among all the catalysts, SO42-/Au-TiO2 exhibited the best catalytic activity in the esterification reaction for the synthesis of citric acid n-butyl acetate and in the decomposition of methyl orange, as confirmed by a high conversion rate of up to 98.2% and 100% degradation rate, respectively. This can be attributed to an increase in the Lewis acidity of the catalyst and increased separation efficiency of electron-hole pairs. This superior catalyst has great potential applications in esterification reactions and wastewater treatments.http://dx.doi.org/10.1155/2016/4618924 |
| spellingShingle | Yu Niu Pan Huang Fuying Li Kai Yang Jinbei Yang Renzhang Wang Cheng Lin Ting Qiu Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid International Journal of Photoenergy |
| title | Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid |
| title_full | Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid |
| title_fullStr | Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid |
| title_full_unstemmed | Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid |
| title_short | Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid |
| title_sort | noble metal decoration and presulfation on tio2 increased photocatalytic activity and efficient esterification of n butanol with citric acid |
| url | http://dx.doi.org/10.1155/2016/4618924 |
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