Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania
The visible-light-driven photocatalytic degradation of Bisphenol A (BPA) was investigated using the binary composite of alkaline treated g-C3N4 (HT-g-C3N4) deposited over commercial TiO2 (Evonik Degussa GmbH, Essen, Germany). The existence and contribution of both TiO2 and g-C3N4/HT-g-C3N4 in the co...
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| Format: | Article |
| Language: | English |
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MDPI
2017
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| Online Access: | http://eprints.um.edu.my/19022/1/Mechanistic_characteristics_of_surface_modified_organic_semiconductor_g-C3N4_nanotubes_alloyed_with_titania.pdf |
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| author | Sim, L.C. Tan, W.H. Leong, K.H. Bashir, M.J.K. Saravanan, P. Surib, N.A. |
| author_facet | Sim, L.C. Tan, W.H. Leong, K.H. Bashir, M.J.K. Saravanan, P. Surib, N.A. |
| author_sort | Sim, L.C. |
| collection | UM |
| description | The visible-light-driven photocatalytic degradation of Bisphenol A (BPA) was investigated using the binary composite of alkaline treated g-C3N4 (HT-g-C3N4) deposited over commercial TiO2 (Evonik Degussa GmbH, Essen, Germany). The existence and contribution of both TiO2 and g-C3N4/HT-g-C3N4 in the composite was confirmed through various analytical techniques including powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-vis-DRS), and photoluminescence (PL) analysis. The results showed that the titania in the binary composite exhibited both pure rutile and anatase phases. The morphological analysis indicated that the spongy "morel-like" structure of g-C3N4 turned to nanotube form after alkaline hydrothermal treatment and thereby decreased the specific surface area of HT-g-C3N4. The low surface area of HT-g-C3N4 dominates its promising optical property and effective charge transfer, resulting in a deprived degradation efficiency of BPA two times lower than pure g-C3N4 The binary composite of HT-g-C3N4/TiO2 exhibited excellent degradation efficiency of BPA with 2.16 times higher than the pure HT-g-C3N4. The enhanced photocatalytic activity was mainly due to the promising optical band gap structure with heterojunction interface, favorable specific surface area, and good charge separation. |
| first_indexed | 2024-03-06T05:47:02Z |
| format | Article |
| id | um.eprints-19022 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:47:02Z |
| publishDate | 2017 |
| publisher | MDPI |
| record_format | dspace |
| spelling | um.eprints-190222018-08-17T03:22:14Z http://eprints.um.edu.my/19022/ Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania Sim, L.C. Tan, W.H. Leong, K.H. Bashir, M.J.K. Saravanan, P. Surib, N.A. TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering The visible-light-driven photocatalytic degradation of Bisphenol A (BPA) was investigated using the binary composite of alkaline treated g-C3N4 (HT-g-C3N4) deposited over commercial TiO2 (Evonik Degussa GmbH, Essen, Germany). The existence and contribution of both TiO2 and g-C3N4/HT-g-C3N4 in the composite was confirmed through various analytical techniques including powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-vis-DRS), and photoluminescence (PL) analysis. The results showed that the titania in the binary composite exhibited both pure rutile and anatase phases. The morphological analysis indicated that the spongy "morel-like" structure of g-C3N4 turned to nanotube form after alkaline hydrothermal treatment and thereby decreased the specific surface area of HT-g-C3N4. The low surface area of HT-g-C3N4 dominates its promising optical property and effective charge transfer, resulting in a deprived degradation efficiency of BPA two times lower than pure g-C3N4 The binary composite of HT-g-C3N4/TiO2 exhibited excellent degradation efficiency of BPA with 2.16 times higher than the pure HT-g-C3N4. The enhanced photocatalytic activity was mainly due to the promising optical band gap structure with heterojunction interface, favorable specific surface area, and good charge separation. MDPI 2017 Article PeerReviewed application/pdf en http://eprints.um.edu.my/19022/1/Mechanistic_characteristics_of_surface_modified_organic_semiconductor_g-C3N4_nanotubes_alloyed_with_titania.pdf Sim, L.C. and Tan, W.H. and Leong, K.H. and Bashir, M.J.K. and Saravanan, P. and Surib, N.A. (2017) Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania. Materials, 10 (1). p. 28. ISSN 1996-1944, DOI https://doi.org/10.3390/ma10010028 <https://doi.org/10.3390/ma10010028>. http://dx.doi.org/10.3390/ma10010028 doi:10.3390/ma10010028 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering Sim, L.C. Tan, W.H. Leong, K.H. Bashir, M.J.K. Saravanan, P. Surib, N.A. Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title | Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title_full | Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title_fullStr | Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title_full_unstemmed | Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title_short | Mechanistic Characteristics of Surface Modified Organic Semiconductor g-C3N4 Nanotubes Alloyed with Titania |
| title_sort | mechanistic characteristics of surface modified organic semiconductor g c3n4 nanotubes alloyed with titania |
| topic | TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering |
| url | http://eprints.um.edu.my/19022/1/Mechanistic_characteristics_of_surface_modified_organic_semiconductor_g-C3N4_nanotubes_alloyed_with_titania.pdf |
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