Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response
Crystal facet engineering has attracted worldwide attention, particularly in facet manipulation of titanium dioxide (TiO2) surface properties. An improved synthesis by solvothermal route has been employed for the formation of TiO2 with highly exposed 001 facets decorated on reduced graphene oxide (R...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2014/650583 |
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| author | Gregory S. H. Thien Fatin Saiha Omar Nur Ily Syuhada Ahmad Blya Wee Siong Chiu Hong Ngee Lim Ramin Yousefi Farid-Jamali Sheini Nay Ming Huang |
| author_facet | Gregory S. H. Thien Fatin Saiha Omar Nur Ily Syuhada Ahmad Blya Wee Siong Chiu Hong Ngee Lim Ramin Yousefi Farid-Jamali Sheini Nay Ming Huang |
| author_sort | Gregory S. H. Thien |
| collection | DOAJ |
| description | Crystal facet engineering has attracted worldwide attention, particularly in facet manipulation of titanium dioxide (TiO2) surface properties. An improved synthesis by solvothermal route has been employed for the formation of TiO2 with highly exposed 001 facets decorated on reduced graphene oxide (RGO) sheets. The RGO-TiO2 composite could be produced with high yield by following a stringently methodical yet simple approach. Field emission scanning electron microscope and high resolution transmission electron microscope imaging reveal that the structure consists of TiO2 nanoparticles covered with TiO2 nanosheets of exposed 001 facets on a RGO sheet. The photocurrent response of the RGO-TiO2 composite was discovered to outperform that of pure TiO2, as a ~10-fold increase in photocurrent density was observed for the RGO-TiO2 electrodes. This may be attributed to rapid electron transport and the delayed recombination of electron-hole pairs due to improved ionic interaction between titanium and carbon. |
| format | Article |
| id | doaj-art-a276b9442f8145488e2102897c3195d9 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-a276b9442f8145488e2102897c3195d92025-02-03T01:09:08ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/650583650583Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical ResponseGregory S. H. Thien0Fatin Saiha Omar1Nur Ily Syuhada Ahmad Blya2Wee Siong Chiu3Hong Ngee Lim4Ramin Yousefi5Farid-Jamali Sheini6Nay Ming Huang7Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaLow Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaLow Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaLow Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Chemistry, Faculty of Science, University Putra Malaysia, 43400 UPM, Serdang, Selangor (Darul Ehsan), MalaysiaDepartment of Physics, Masjed-Soleiman Branch, Islamic Azad University (I.A.U.), Masjed-Soleiman 64914, IranDepartment of Physics, Ahwaz Branch, Islamic Azad University, Ahwaz 63461, IranLow Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaCrystal facet engineering has attracted worldwide attention, particularly in facet manipulation of titanium dioxide (TiO2) surface properties. An improved synthesis by solvothermal route has been employed for the formation of TiO2 with highly exposed 001 facets decorated on reduced graphene oxide (RGO) sheets. The RGO-TiO2 composite could be produced with high yield by following a stringently methodical yet simple approach. Field emission scanning electron microscope and high resolution transmission electron microscope imaging reveal that the structure consists of TiO2 nanoparticles covered with TiO2 nanosheets of exposed 001 facets on a RGO sheet. The photocurrent response of the RGO-TiO2 composite was discovered to outperform that of pure TiO2, as a ~10-fold increase in photocurrent density was observed for the RGO-TiO2 electrodes. This may be attributed to rapid electron transport and the delayed recombination of electron-hole pairs due to improved ionic interaction between titanium and carbon.http://dx.doi.org/10.1155/2014/650583 |
| spellingShingle | Gregory S. H. Thien Fatin Saiha Omar Nur Ily Syuhada Ahmad Blya Wee Siong Chiu Hong Ngee Lim Ramin Yousefi Farid-Jamali Sheini Nay Ming Huang Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response International Journal of Photoenergy |
| title | Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response |
| title_full | Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response |
| title_fullStr | Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response |
| title_full_unstemmed | Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response |
| title_short | Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed {001} Facets and Its Photoelectrochemical Response |
| title_sort | improved synthesis of reduced graphene oxide titanium dioxide composite with highly exposed 001 facets and its photoelectrochemical response |
| url | http://dx.doi.org/10.1155/2014/650583 |
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