A facile synthesis of octahedral layered birnessite-type manganese oxide (OL-1) nanostructures with tremendous catalytic activity for methylene blue degradation

Absus, Suharsimi; Zulfa, Riana; Awaluddin, Amir; Anita, Sofia; Siregar, Siti Saidah; Prasetya,

doi:10.1063/1.5082414

Cited by 12 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The degradation time also showed that within 1 minute, it was able to reduce Methylene Blue levels up to 89.18% and continue to increase until 30 minutes reaching 97.63 %. There was an increase in the effectiveness of catalysis for MB degradation compared to cryptomelane doped with Fe (54.82 -77.82 %) [16], cryptomelane doped with Cu (57.82 -94.64 %) [17], and birnessite (78.89 -97.73 %) [18].…”

Section: Characteristic Of Function Groupsmentioning

confidence: 99%

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

Prasetya¹,

Putri²,

Yuhelson³

et al. 2019

Proceedings of the International Conference of CELSciTech 2019 - Science and Technology Track (ICCELST-ST 2019)

Self Cite

View full text Add to dashboard Cite

The need for catalysts for effective and environmentally friendly waste degradation is increasing. Manganese oxide has a layered structure which is theoretically capable of producing catalysis properties. The synthesis was done through variation of mole ratio of precursors and time of washing. The variations ratio of moles of precursors and washing determined the type of manganese oxide. Synthesis of birnessite type manganese oxide has been successfully performed using KMnO 4 and citric acid precursors via sol-gel method. The optimum condition of birnessite synthesis through sol-gel method was obtained in a precursor mole ratio of KMnO 4 and citric acid 3:1, single washing, with a time of calcination for 5 hours, and calcination temperature of 500 °C. The results showed that the ratio of K/Mn atoms were 3.1 to 8.0. Interpretation of infrared absorption shows a typical vibration of birnessite. Birnessite produced has a formula which was KMn 3 O 11. Birnessite can eliminate Methylene Blue up to 97.63%.

show abstract

Section: Characteristic Of Function Groupsmentioning

confidence: 99%

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

Prasetya¹,

Putri²,

Yuhelson³

et al. 2019

Proceedings of the International Conference of CELSciTech 2019 - Science and Technology Track (ICCELST-ST 2019)

Self Cite

View full text Add to dashboard Cite

show abstract

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

Awaluddin,

Amiruddin,

Siregar

et al. 2024

E3S Web Conf.

View full text Add to dashboard Cite

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.

show abstract

Synthesis and Catalytic Activities of Manganese Oxides Prepared by Precipitation Method: Effects of Mixing Modes of Reactants and Calcination Process

Kurniati

Asleni

Linggawati

et al. 2019

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The two phases of manganese oxides are prepared by two different mixing modes using the same precipitation method from the solutions of KMnO4 dan maltose, resulting in marked different phase structures and catalytic activities. The oxides synthesized by adding dropwise of the maltose solution into KMnO4 solution (method A) resulted in the formation of layer manganese oxide birnessite, which turns into tunnel structured manganese oxide cryptomelane following the calcination at 600°C for 4 hours. The simultaneous addition of KMnO4 solution and maltose solution (method B) also produced birnessite before calcination, but remain unchanged as birnessite phase after calcination with cryptomelane as minor product. The samples without calcination obtained from method A posseses higher surface area and poor crystallinity compared to that with calcination. The catalytic test using Fenton-like Reaction for methylene blue (MB) degradation indicated the tremendeous difference in their catalytic activities for both samples without and with calcination. The birnessite catalysts (without calcination) prepared using method A show the highest activity and are able to degrade 93% methylene blue within 10 minute, much higher than other samples.

show abstract

A facile synthesis of octahedral layered birnessite-type manganese oxide (OL-1) nanostructures with tremendous catalytic activity for methylene blue degradation

Cited by 12 publications

References 21 publications

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

Manganese Oxide Synthesis of Birnessite Type Using Sol-Gel Method for Methylene Blue Degradation

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

Synthesis and Catalytic Activities of Manganese Oxides Prepared by Precipitation Method: Effects of Mixing Modes of Reactants and Calcination Process

Contact Info

Product

Resources

About