A Flower-like In<sub>2</sub>O<sub>3</sub> Catalyst Derived via Metal–Organic Frameworks for Photocatalytic Applications
The most pressing concerns in environmental remediation are the design and development of catalysts with benign, low-cost, and efficient photocatalytic activity. The present study effectively generated a flower-like indium oxide (In<sub>2</sub>O<sub>3</sub>-MF) catalyst emplo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
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| Series: | International Journal of Molecular Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1422-0067/23/8/4398 |
| Summary: | The most pressing concerns in environmental remediation are the design and development of catalysts with benign, low-cost, and efficient photocatalytic activity. The present study effectively generated a flower-like indium oxide (In<sub>2</sub>O<sub>3</sub>-MF) catalyst employing a convenient MOF-based solvothermal self-assembly technique. The In<sub>2</sub>O<sub>3</sub>-MF photocatalyst exhibits a flower-like structure, according to morphology and structural analysis. The enhanced photocatalytic activity of the In<sub>2</sub>O<sub>3</sub>-MF catalyst for 4-nitrophenol (4-NP) and methylene blue (MB) is likely due to its unique 3D structure, which includes a large surface area (486.95 m<sup>2</sup> g<sup>−1</sup>), a wide spectrum response, and the prevention of electron–hole recombination compared to In<sub>2</sub>O<sub>3</sub>-MR (indium oxide-micro rod) and In<sub>2</sub>O<sub>3</sub>-MD (indium oxide-micro disc). In the presence of NaBH<sub>4</sub> and visible light, the catalytic performances of the In<sub>2</sub>O<sub>3</sub>-MF, In<sub>2</sub>O<sub>3</sub>-MR, and In<sub>2</sub>O<sub>3</sub>-MD catalysts for the reduction of 4-NP and MB degradation were investigated. Using In<sub>2</sub>O<sub>3</sub>-MF as a catalyst, we were able to achieve a 99.32 percent reduction of 4-NP in 20 min and 99.2 percent degradation of MB in 3 min. Interestingly, the conversion rates of catalytic 4-NP and MB were still larger than 95 and 96 percent after five consecutive cycles of catalytic tests, suggesting that the In<sub>2</sub>O<sub>3</sub>-MF catalyst has outstanding catalytic performance and a high reutilization rate. |
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| ISSN: | 1661-6596 1422-0067 |