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Putri, G. E., Arief, S., Jamarun, N., Gusti, F. R., & Fisli, A. (2019). High Performance of Photocatalytic Activity of Cerium Doped Silika Mesoporous Operating under Visible light Irradiation. KnE Engineering, 4(2), 128–140. https://doi.org/10.18502/keg.v1i2.4438

https://doi.org/10.18502/keg.v1i2.4438

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authors

  • Gusliani Eka Putri
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  • Syukri Arief
    No author data available.
  • Novesar Jamarun
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  • Feni Rahayu Gusti
    No author data available.
  • Adel Fisli
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Published Date

  • Apr 16, 2019

High Performance of Photocatalytic Activity of Cerium Doped Silika Mesoporous Operating under Visible light Irradiation

KnE Engineering / International Conference on Basic Sciences and Its Applications (ICBSA-2018) / Pages 128–140

Abstract

The photocatalytic activity of cerium oxide increased after being doped with mesoporous silica. Increasing activity photocatalytic as shown from BET, TEM, and DRS UV Vis data. Results showed the surface area of Cerium oxide doped of mesoporous silica advanced from 97.44 to 736.88 m2g −1. High surface area caused increased photocatalytic activity. DRS UV VIS Analysis showed that cerium oxide nanoparticles band gap value of 2.43 eV and mesoporous silica band gap value 1.27 eV. The smaller bandgap results in effective photocatalysts used in visible light. Degradation methylene blue had done used photochatalyst Ceria, MS-Ce dan MMS-Ce, and visible irradiation. This study determines the optimum weight of Ceria, MS-Ce and MMS-Ce catalysts, optimum radiation time of Ceria, MS-Ce and MMS-Ce catalysts and the effectiveness of photodegradation of methylene blue, MS-Ce and MMS-Ce at optimum conditions. Degradation of Methylene blue was analyzed using a UV-Vis spectrometer. The results showed that the optimum conditions obtained were the optimum catalyst weight of Ceria, MS-Ce, and MMS-Ce, were 50 mg, 50 mg, and 40 mg. The optimum time for Ceria, MS-Ce and MMS-Ce photocatalyst degrades used visible light was 150 minutes, 300 minutes and 120 minutes. The effectiveness of methylene blue degradation using Ceria, MS-Ce and MMS-Ce photocatalysts was 68.85%, 97.38%, and 99.98%.


 


 


Keywords: cerium oxide, silica mesoporous, photocatalytic

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