Bio-Derived Graphite from Pterocarpus marsupium Leaves for rGO-MoO$_3$ Nanocomposites with Enhanced Photocatalytic Efficiency
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909682276237312 |
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| author | Mary, P. Princeya Kumaresavanji, M. Venkatesh, P. Sundara Kannan, N. Vasumathi, V. |
| author_facet | Mary, P. Princeya Kumaresavanji, M. Venkatesh, P. Sundara Kannan, N. Vasumathi, V. |
| contents | This study presents a sustainable approach to synthesize bio-graphite from Pterocarpus marsupium (Indian Kino) leaves without using chemical catalysts, activating agents, or organic solvents. The resulting bio-graphite was used to produce reduced graphene oxide (rGO) via a modified Hummers method. The bio-graphite derived rGO was further incorporated with orthorhombic structured MoO$_3$ at different percentages (1, 3, and 6 wt.%) using ultrasonication. Structural, morphological, and functional characterizations were conducted using XRD, FESEM, FTIR, and UV-Vis DRS spectroscopy, revealing a bandgap of 2.82 eV for the rGO(3 wt.%)-MoO$_3$ composite. Photocatalytic activity was evaluated via methylene blue degradation under natural sunlight. The rGO(3 wt.%)-MoO$_3$ nanocomposite showed superior performance, achieving 90% degradation in 150 minutes when compared to 65% by pure MoO$_3$. The Scavenger tests confirmed superoxide radicals $(\cdot O_2^-)$ as the main reactive species. This work highlights the potential of bio-graphite derived rGO-MoO$_3$ nanocomposites as efficient, eco-friendly photocatalysts for wastewater treatment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_19758 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bio-Derived Graphite from Pterocarpus marsupium Leaves for rGO-MoO$_3$ Nanocomposites with Enhanced Photocatalytic Efficiency Mary, P. Princeya Kumaresavanji, M. Venkatesh, P. Sundara Kannan, N. Vasumathi, V. Materials Science This study presents a sustainable approach to synthesize bio-graphite from Pterocarpus marsupium (Indian Kino) leaves without using chemical catalysts, activating agents, or organic solvents. The resulting bio-graphite was used to produce reduced graphene oxide (rGO) via a modified Hummers method. The bio-graphite derived rGO was further incorporated with orthorhombic structured MoO$_3$ at different percentages (1, 3, and 6 wt.%) using ultrasonication. Structural, morphological, and functional characterizations were conducted using XRD, FESEM, FTIR, and UV-Vis DRS spectroscopy, revealing a bandgap of 2.82 eV for the rGO(3 wt.%)-MoO$_3$ composite. Photocatalytic activity was evaluated via methylene blue degradation under natural sunlight. The rGO(3 wt.%)-MoO$_3$ nanocomposite showed superior performance, achieving 90% degradation in 150 minutes when compared to 65% by pure MoO$_3$. The Scavenger tests confirmed superoxide radicals $(\cdot O_2^-)$ as the main reactive species. This work highlights the potential of bio-graphite derived rGO-MoO$_3$ nanocomposites as efficient, eco-friendly photocatalysts for wastewater treatment. |
| title | Bio-Derived Graphite from Pterocarpus marsupium Leaves for rGO-MoO$_3$ Nanocomposites with Enhanced Photocatalytic Efficiency |
| topic | Materials Science |
| url | https://arxiv.org/abs/2504.19758 |