Synthesis and Characterization of Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/TiO&lt;sub&gt;2&lt;/sub&gt;/ SiO&lt;sub&gt;2&lt;/sub&gt; and Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/TiO&lt;sub&gt;2&lt;/sub&gt;/Activated Carbon Nanocomposite Photocatalysts for Dye Removal

Zubir, Zuhana Ahmad; Ibrahim, Suhaina Mohd; Muhammad, Nor Adhila; Ahmad, Mohamad Ibrahim; Yeoh, Fei-Yee; Lee, Ting; Shaari, Nur Shuhada

doi:10.4028/www.scientific.net/amr.1133.523

Cited by 2 publications

(2 citation statements)

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“…Nanostructures of TiO 2 /Fe 2 O 3 supported on powder-activated carbon exhibited notable photocatalytic and adsorption capabilities, along with excellent structural stability and reusability for cyanide removal [41]. Comparatively, the AC-supported catalyst on TiO 2 /Fe 2 O 3 demonstrated superior performance in the discoloration of methylene blue (MB) compared to a silica-supported counterpart [42]. Fe 2 O 3 /TiO 2 @AC fiber membrane functioned as an efficient, reusable photocatalyst and adsorbent, achieving 100% removal of phenol pollutants [43] and effectively eliminating high concentrations of Congo Red pollutants [44].…”

Section: Introductionmentioning

confidence: 99%

Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis

Kartikowati,

Darmawan,

Saraswati

et al. 2024

Funct. Compos. Struct.

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Fe2O3/TiO2/AC composites were successfully synthesized via a sol-gel method, and their efficacy in decomposing methyl orange via adsorption-photocatalytic processes was reported for the first time in this study. Systematic exploration of the physicochemical properties impacting photocatalytic activity was conducted through X-ray diffraction (XRD), scanning electron microscopy - Energy-dispersive X-ray spectroscopy (SEM-EDS), and Fourier transform infrared spectroscopy (FTIR) characterizations. The study revealed that the degradation of methyl orange resulted from a synergistic interplay between adsorption and photocatalysis. The incorporation of Fe2O3 nanoparticles significantly elevated photocatalytic activity by 70%, with additional enhancement observed upon the introduction of activated carbon (AC) particles. The synergistic effects of AC adsorption and TiO2/Fe2O3 photocatalysis exhibited remarkable efficiency in degrading methyl orange under visible light irradiation. The trial functioning of Fe2O3 and AC in the TiO2/Fe2O3/AC composite, which serves as an adsorbent, an electron trap, and a co-catalyst providing active sites, significantly improved photocatalytic activity. These findings not only contribute to understanding the crucial role of composite TiO2 in conjunction with metal and carbon-based co-catalysts but also hold valuable implications for advancing research in the development of adsorption-photocatalytic systems for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis

Kartikowati,

Darmawan,

Saraswati

et al. 2024

Funct. Compos. Struct.

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“…These charge pairs tend to recombine so that the quantity of •OH formed on the surface is small, resulting in low photocatalytic activity [6]. In addition, the adsorption ability of organic substrates is relatively small because the surface area of TiO2 [11].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue using Fe2O3-TiO2/Kaolinite under Visible Light Illumination

Aritonang

Selpiana

Wibowo

et al. 2022

JKPK

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Combining TiO2 and a semiconductor with a smaller band gap, such as Fe2O3, to form a heterojunction composite can increase its photocatalytic activity. In this work, the Fe2O3-TiO2/kaolinite composites were successfully synthesized by ultrasonic-assisted coprecipitation using titanium-tetraisopropoxide (TTIP) dan Fe (NO3)3.9H2O as precursors. Using kaolinite as a matrix also increases the photocatalyst’s surface area. The obtained Fe2O3-TiO2/kaolinite composites were characterized. The crystal phase was characterized using X-Ray Diffraction and resulted in anatase with a crystallite size average of 9,7 nm. Fourier Transform Infrared Spectrophotometer (FTIR) shows the peak at a wavenumber 574-1210 cm−1 ascribed TiO2 and Fe2O3 incorporated into kaolinite. The Optical properties show the absorption edge of Fe2O3-TiO2/kaolinite is redshift toward the visible light region. The result showed that the photocatalytic activity of Fe2O3-TiO2/kaolinite composites with heterostructure was more active than the corresponding Fe2O3 or pure TiO2 in the degradation of methylene blue under visible light illumination, which can degrade 83% for 180 minutes. Fe2O3 and kaolinite cause its synergistic effect as supporting materials. Furthermore, it indicates that the recombination of photo hole and photoelectron charge pair can be minimized. The Fe2O3-TiO2/kaolinite composite is a promising photocatalyst to degrade organic pollutants for wastewater treatment.

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Synthesis and Characterization of Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>/ SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>/Activated Carbon Nanocomposite Photocatalysts for Dye Removal

Cited by 2 publications

References 8 publications

Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis

Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis

Photocatalytic Degradation of Methylene Blue using Fe2O3-TiO2/Kaolinite under Visible Light Illumination

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Synthesis and Characterization of Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>/ SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>/Activated Carbon Nanocomposite Photocatalysts for Dye Removal

Cited by 2 publications

References 8 publications

Enhancing methyl orange discoloration with TiO2/Fe2O3/AC composites: synergistic adsorption-photocatalysis

Enhancing methyl orange discoloration with TiO2/Fe2O3/AC composites: synergistic adsorption-photocatalysis

Photocatalytic Degradation of Methylene Blue using Fe2O3-TiO2/Kaolinite under Visible Light Illumination

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Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis

Enhancing methyl orange discoloration with TiO₂/Fe₂O₃/AC composites: synergistic adsorption-photocatalysis