Visible light driven reduced graphene oxide supported ZnMgAl LTH/ZnO/g-C3N4 nanohybrid photocatalyst with notable two-dimension formation for enhanced photocatalytic activity towards organic dye degradation
| Autor: | K. Bhuvaneswari, M.L. Aruna Kumari, Nora H. Al-Shaalan, Ayman A. Ghfar, R.P. Rajesh, Ganapathi Bharathi, G. Palanisamy, Mani Govindasamy, Indra Raj Upadhyaya, T. Pazhanivel |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Graphene Oxide Heterojunction 010501 environmental sciences 01 natural sciences Biochemistry Hydrothermal circulation law.invention 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Chemical engineering law Photocatalysis Hydroxide Charge carrier 030212 general & internal medicine 0105 earth and related environmental sciences General Environmental Science Visible spectrum |
| Zdroj: | Environmental Research. 197:111079 |
| ISSN: | 0013-9351 |
| Popis: | In this study, 2D/2D/2D heterostructured r-GO/LTH/ZnO/g-C3N4 nanohybrid were synthesized through hydrothermal method. The strong electrostatic interaction between the negatively charged g-C3N4 and r-GO nanosheets with positively charged layered triple hydroxide (LTH) nanosheets are effectively influences the successful formation of heterojunction. The LTH nanosheets are well spread on the g-C3N4 nanosheets combined with r-GO. In particular, the as prepared heterojunction shows a better photocatalytic degradation activity compared to pristine samples and the significant enhancement in the photocatalytic performance is mainly accredited to the large interfacial charge transition of photogenerated charge carriers under the visible light irradiation. Although the 2D/2D/2D heterojunction effectively hinders the charge carrier recombination resulting high photocatalytic activity with good stability. In addition, the r-GO supported LTH/ZnO/g-C3N4 heterojunction shows high photo-stability after sequential experimental runs with no obvious change in the dye degradation process. Consequently, the role of active species was investigated over the r-GO/LTH/ZnO/g-C3N4 heterojunction with the help of different scavengers. |
| Databáze: | OpenAIRE |
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