# Adsorption of Pb2+ on Thiol-functionalized Mesoporous Silica, SH-MCM-48
> Taba P.

URL kanonis: https://discover.unhas.ac.id/publications/adsorption-of-pb2-on-thiol-functionalized-mesoporous-silica-sh-mcm-48
Jurnal / Konferensi: Journal of Physics Conference Series
Tahun terbit: 2018
DOI: https://doi.org/10.1088/1742-6596/979/1/012058
ISSN: 17426588
Citations: 10

## Authors
- Taba P.

## Abstract
Modification of mesoporous silica, MCM-48, by using 3- mercaptopropyltrimethoxysilane has been successfully conducted. MCM-48 and SH-MCM-48 were characterized using XRD and FTIR. SH-MCM-48 was used as an adsorbent of Pb2+ ions from solution. A number of Pb2+ ions adsorbed were studied as the function of time, pH, and concentration. The concentration of the ions after adsorption was determined by an Atomic Absorption Spectrophotometer. The removal of the adsorbed ions from the SH-MCM-48 was also studied using several desorbing agents. The result showed that the optimum time was 20 minutes and optimum pH was 4. The adsorption of Pb(II) ion followed the pseudo-second-order with the rate constant of 0,2632 g•mg−1•min−1. Adsorption of Pb(II) ion fitted the Langmuir isotherm with the adsorption capacity of 0,1088 mmol/g. The best desorbing agent to remove the adsorbed ion from SH-MCM-48 was 0.3 M HCl solution with the desorption percentage of 58.6%.

## Keywords
- Adsorption
- Mesoporous silica
- Chemistry
- Desorption
- Langmuir adsorption model
- MCM-41
- Fourier transform infrared spectroscopy
- Ion
- Mesoporous material
- Nuclear chemistry
- Inorganic chemistry
- Thiol
- Organic chemistry
- Molecular sieve
- Catalysis
- Chemical engineering
- Engineering

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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