pH-Control of Oxidative Degradation of Methylene Blue Over Octahedral Molecular Sieve Cryptomelane-Type Manganese Oxide (OMS-2) and Fe-OMS-2

Sandra, I; Muhdarina,; Siregar, Siti Saidah; Awaluddin, Amir

doi:10.1088/1742-6596/1351/1/012037

Cited by 3 publications

References 10 publications

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The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

Awaluddin,

Amiruddin,

Siregar

et al. 2024

E3S Web Conf.

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Photocatalytic degradation of organic dye such as methylene blue (MB) has been on focused various research interest due to environmental impact. In this study, the composite manganosite MnO/activated carbon was synthesized by a facile one-pot of solgel method through the reaction between potassium permanganate, glucose and commercial activated carbon. The XRD result revealed the presence of rock-salt manganosite MnO in the composite. The catalytic studies were performed under different solution pH, different catalyst concentration and various initial MB concentrations. The result indicated that the catalyst is very effective for the degradation of MB at the basic condition (pH 9 and p11). The degradation of MB in an acidic environment, however, is much less than that of basic condition. In addition, an increase in initial MB concentration caused a decrease in MB degradation due to the saturation of the active sites of the catalyst. The maximum degradation of MB was 98.86 % achieved at pH 11, the initial MB concentration of 50 ppm, and the catalyst concentration of 35 mg.

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The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

Awaluddin,

Amiruddin,

Siregar

et al. 2024

E3S Web Conf.

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Wastewater treatment from organic dye methylene blue on ceramic membranes with applied layers based on a mixture of manganese and cobalt oxides

Lin¹,

Yarovaya²,

Zaw³

2022

International Scientific and Practical Conference “Energy, Ecology and Technology in Agriculture” (Eea2022)

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The Effect of Support on the Catalytic Efficiency of MnO₂/Activated Carbon for degradation of Methylene blue

Yanti

Sophia

Siregar

et al. 2021

J. Phys.: Conf. Ser.

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Methylene blue (MB) is a blue cationic thiazine dye which is widely used in cotton fiber, wood and textile industries, but has an adverse effect to environment and living organism. It is urgent to find an alternative and effective solution for this recalcitrant compound. The Fenton process-based advanced oxidation process is considered as an effective method for the degradation of organic contaminants such as dyes. In this study, the composite α-MnO2/activated carbon (AC) was first synthesized by a facile, one-pot synthesis using sol-gel method and characterized by X-ray diffraction (XRD) and BET surface areas. The XRD results indicated that the tunnel cryptomelane-type manganese oxide (α-MnO2) was successfully synthesized as the minor phase in the activated carbon support. The composite α-MnO2/AC has higher specific surface area than the single α-MnO2. The catalytic studies indicated that the α-MnO2/AC has a much higher catalytic efficiency over single α-MnO2 for degradation of MB. The presence of the support and the increase in surface area of α-MnO2/AC could be responsible for its higher catalytic efficiency compared to single α-MnO2. In the optimum condition, the α-MnO2/AC was able to degrade 98.48 % and 99.2 % of MB within 10 and 120 minute of reaction time, respectively.

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pH-Control of Oxidative Degradation of Methylene Blue Over Octahedral Molecular Sieve Cryptomelane-Type Manganese Oxide (OMS-2) and Fe-OMS-2

Cited by 3 publications

References 10 publications

The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

Wastewater treatment from organic dye methylene blue on ceramic membranes with applied layers based on a mixture of manganese and cobalt oxides

The Effect of Support on the Catalytic Efficiency of MnO₂/Activated Carbon for degradation of Methylene blue

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pH-Control of Oxidative Degradation of Methylene Blue Over Octahedral Molecular Sieve Cryptomelane-Type Manganese Oxide (OMS-2) and Fe-OMS-2

Cited by 3 publications

References 10 publications

The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic Dye

Wastewater treatment from organic dye methylene blue on ceramic membranes with applied layers based on a mixture of manganese and cobalt oxides

The Effect of Support on the Catalytic Efficiency of MnO2/Activated Carbon for degradation of Methylene blue

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The Effect of Support on the Catalytic Efficiency of MnO₂/Activated Carbon for degradation of Methylene blue