Enhanced removal of organic dye by activated carbon decorated TiO2 nanoparticles from Mentha Aquatica leaves via ultrasonic approach

Bathula, Chinna; Rabani, Iqra; Lee, Sejoon; Youi, Hae-Kyung; Choy, Ji-Yeon; Kadam, Abhijit N.; Shretha, Nabeen K.; Seo, Young‐Soo

doi:10.1016/j.ceramint.2020.12.282

Cited by 42 publications

(6 citation statements)

References 31 publications

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“…As for the AC-TiO 2 is considered, it also shows three characteristic Raman bands at 395.3, 511.3, and 632.4 cm −1 corresponding to the B 1g(1) , A 1g + B 1g(2) , and E g modes of anatase, respectively. Additionally, in AC-TiO 2 composite, the two characteristic Raman bands at 1331.05 cm −1 (D-band) ascribed to disordered SP 3 -defective carbon and 1593.93 cm −1 (G-band) assigned to ordered sp 2 -bonded carbon atoms, confirms the presence of carbon in AC-TiO 2 composite [ 42 ]. It has been noted that there is no major difference in the Raman scattering patterns between AC-TiO 2 composite and bare TiO 2 takes place on AC deposition on bare TiO 2 [ 43 ].…”

Section: Resultsmentioning

confidence: 97%

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

et al. 2022

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The design and development of novel photocatalysts for treating toxic substances such as industrial waste, dyes, pesticides, and pharmaceutical wastes remain a challenging task even today. To this end, a biowaste pistachio-shell-derived activated carbon (AC) loaded TiO2 (AC-TiO2) nanocomposite was fabricated and effectively utilized towards the photocatalytic degradation of toxic azo dye Reactive Red 120 (RR 120) and ofloxacin (OFL) under UV-A light. The synthesized materials were characterized for their structural and surface morphology features through various spectroscopic and microscopic techniques, including high-resolution transmission electron microscope (HR-TEM), field emission scanning electron microscope (FE-SEM) along with energy dispersive spectra (EDS), diffuse reflectance spectra (DRS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, photoluminescence spectra (PL) and BET surface area measurements. AC-TiO2 shows enhanced photocatalytic activity compared to bare TiO2 due to the change in the bandgap energy and effective charge separation. The degradation rate of dyes was affected by the bandgap of the semiconductor, which was the result of the deposition weight percentage of AC onto the TiO2. The presence of AC influences the photocatalytic activity of AC-TiO2 composite towards RR 120 and OFL degradation. The presence of heteroatoms-enriched AC enhances the charge mobility and suppresses the electron-hole recombination in AC-TiO2 composite, which enhances the photocatalytic activity of the composite. The hybrid material AC-TiO2 composite displayed a higher photocatalytic activity against Reactive Red 120 and ofloxacin. The stability of the AC-TiO2 was tested against RR 120 dye degradation with multiple runs. GC-MS analyzed the degradation intermediates, and a suitable degradation pathway was also proposed. These results demonstrate that AC-TiO2 composite could be effectively used as an ecofriendly, cost-effective, stable, and highly efficient photocatalyst.

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Section: Resultsmentioning

confidence: 97%

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

et al. 2022

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“…Despite the deposition of titania nanoparticles on the activated carbon (AC) surface, the AC substrate retains its high surface area, porous structure, and surface features, which play a crucial role in the adsorption of pollutants on the surface as well as in the subsequent delivery of adsorbate to the photocatalyst [4]. Moreover, these materials exhibit self-cleaning properties and, therefore, can be reused [6]. The adsorptive features of titania-activated carbon composites are especially beneficial for highly concentrated dye wastes since the dye molecules can inhibit the light harvesting by titania and cause photocatalyst poisoning that consequently reduces the photocatalytic performance [7,8].…”

Section: Introductionmentioning

confidence: 99%

Advanced Removal of Dyes with Tuning Carbon/TiO2 Composite Properties

Yankovych,

Abreu-Jaureguí,

Farrando-Perez

et al. 2024

Nanomaterials

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This study evaluates the removal of several dyes with different charge properties, i.e., anionic (Acid Red 88), cationic (Basic Red 13), and neutral (Basic Red 5) using transition metal-doped TiO2 supported on a high-surface-area activated carbon. Experimental results confirm the successful deposition of TiO2 and the derivatives (Zr-, Cu-, and Ce-doped samples) on the surface of the activated carbon material and the development of extended heterojunctions with improved electronic properties. Incorporating a small percentage of dopants significantly improves the adsorption properties of the composites towards the three dyes evaluated, preferentially for sample AC/TiO2_Zr. Similarly, the photodegradation efficiency highly depends on the nature of the composite evaluated and the characteristics of the dye. Sample AC/TiO2_Zr demonstrates the best overall removal efficiency for Acid Red 88 and Basic Red 5—83% and 63%, respectively. This promising performance must simultaneously be attributed to a dual mechanism, i.e., adsorption and photodegradation. Notably, the AC/TiO2_Ce outperformed the other catalysts in eliminating Basic Red 13 (74%/6 h). A possible Acid Red 88 degradation mechanism using AC/TiO2_Zr was proposed. This study shows that the removal efficiency of AC/TiO2 composites strongly depends on both the material and pollutant.

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“…1,2 The alarming discharge of organic dye contaminants from the textile industry has brought about serious water pollution, which affects the natural environment and seriously harms human health. [3][4][5] In order to solve these problems, various technologies, such as physical adsorption, 6 membrane ltration, 7 biodegradation, 8 Fenton processes, 9 electrochemical methods 10 and photocatalytic degradation, 11 are applied to get rid of organic dye pollutants in wastewater. Among them, visible-light photocatalysis over semiconductors is an economic, efficient and sustainable method, because it can make the best of renewable and clean solar energy to remove organic pollutants in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

et al. 2023

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Enhanced removal of organic dye by activated carbon decorated TiO2 nanoparticles from Mentha Aquatica leaves via ultrasonic approach

Cited by 42 publications

References 31 publications

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Advanced Removal of Dyes with Tuning Carbon/TiO2 Composite Properties

Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

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Enhanced removal of organic dye by activated carbon decorated TiO2 nanoparticles from Mentha Aquatica leaves via ultrasonic approach

Cited by 42 publications

References 31 publications

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Advanced Removal of Dyes with Tuning Carbon/TiO2 Composite Properties

Kilogram-scale fabrication of TiO2 nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity

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Product

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Kilogram-scale fabrication of TiO₂ nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity