Enhanced removal of organic dye by activated carbon decorated TiO2 nanoparticles from Mentha Aquatica leaves via ultrasonic approach
- Authors
- Bathula, C.; Rabani, I.; Sekar, S.; Youi, Hae-Kyung; Choy, Ji-Yeon; Kadam, A.; Shretha, N.K.; Seo, Young-Soo; Kim, Hyun-Seok
- Issue Date
- Mar-2021
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Carbon; Mentha Aquatica; Photocatalytic activity; Stability; TiO2
- Citation
- Ceramics International, v.47, no.6, pp.8732 - 8739
- Journal Title
- Ceramics International
- Volume
- 47
- Number
- 6
- Start Page
- 8732
- End Page
- 8739
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/80453
- DOI
- 10.1016/j.ceramint.2020.12.282
- ISSN
- 0272-8842
- Abstract
- The development and investigation of environmental-friendly photocatalysts remain a challenge for eco-system remediation concerns. Herein, an ultrasonically-driven, biogenic, green synthesis of titanium dioxide (TiO2) nanoparticles (NPs) utilizing the extract of Mentha Aquatica leaves is reported. The TiO2 nanoparticles were further functionalized with carbon (TiO2@Carbon). The product composition and structure were examined through Raman, BET, and XPS analysis. The XRD studies of the TiO2 NPs confirmed the anatase phase of nanostructures. The TiO2@Carbon NPs displayed enhanced photocatalytic activity(doubled) compared to pristine TiO2 due to their increased surface area, a bathochromic shift in the optical absorption band, and effective charge separation. Significantly, greater than 90% RhB dye was decayed during the photocatalytic oxidation method, which is validated via trapping active species experiment. Carbon is a powerful substrate for the TiO2 hybrid and can be reused over successive five catalytic cycles. The experimental results demonstrated the TiO2@Carbon as a potential candidate for highly-efficient, eco-friendly, reusable, cost-effective photocatalyst. © 2021 Elsevier Ltd and Techna Group S.r.l.
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