# Treatment of Groundwater-Rich Organic Compounds Using Activated Carbon with Additional Germanium Dioxide (GeO2): Kinetics and Adsorption Studies of Methylene Blue and Congo Red
> Fajriani Y.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_85166747885
Jurnal / Konferensi: ACS Omega
Tahun terbit: 2023
DOI: https://doi.org/10.1021/acsomega.3c03526
ISSN: 24701343
Kuartil SJR: Q1
Citations: 10

## Authors
- Fajriani Y.

## Abstract
Activated carbon/GeO<sub>2</sub> composites were synthesized using the sol-gel method and then used as catalysts for the photodegradation of organic pollutants methylene blue (MB) and congo red (CR). The composites were characterized using an X-ray diffractometer and Fourier transform infrared spectroscopy to analyze the structure and chemical bonds of the composite materials, respectively. The ultraviolet-visible (UV-vis) absorption wavelength ranges of the composites toward the pollutants were 550-700 nm for MB and 450-550 for CR. The band gap energies of the composites were calculated, with the values found to be <4.5 eV. It was shown that the adsorption ability of the composites increased with the irradiation time of the pollutants. Furthermore, the adsorption kinetics data were found to be a good fit to a pseudo-first-order kinetics model.

## Keywords
- Adsorption
- Methylene blue
- Congo red
- Activated carbon
- Photodegradation
- Materials science
- Fourier transform infrared spectroscopy
- Kinetics
- Diffractometer
- Catalysis
- Nuclear chemistry
- Chemistry
- Chemical engineering
- Photocatalysis
- Composite material
- Organic chemistry
- Scanning electron microscope
- Physics
- Engineering
- Quantum mechanics

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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