Enhanced removal of organic dye by activated carbon decorated TiO2 nanoparticles from Mentha Aquatica leaves via ultrasonic approach. Issue 6 (15th March 2021)

• Record Type: Journal Article
• Authors: Bathula, Chinna; Rabani, Iqra; Sekar, Sankar; Youi, Hae-Kyung; Choy, Ji-Yeon; Kadam, Abhijit; Shretha, Nabeen K.; Seo, Young-Soo; Kim, Hyun-Seok
• Is Part Of: Ceramics international. Volume 47:Issue 6(2021)
• Page Start: 8732
• Page End: 8739
• Publication Date: 2021-03-15
• Subjects: TiO2 -- Mentha Aquatica -- Carbon -- Photocatalytic activity -- Stability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.12.282
• Languages: English
• ISSNs: 0272-8842

Abstract

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. Graphical abstract: Image 1