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Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei

This study demonstrated the application of chalcone based dithiocarbamate derivative as metal capturing ligands for the removal and pre-concentration of mercury ion (Hg2+). Chalcones are a group of naturally occurring compounds, which can be extracted from fruits, vegetables, plants, and spice. In t...

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Main Author: Khor , Soo Wei
Format: Thesis
Published: 2018
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://studentsrepo.um.edu.my/9370/1/Khor_Soo_Wei.pdf
http://studentsrepo.um.edu.my/9370/6/soo_wei.pdf
http://studentsrepo.um.edu.my/9370/
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spelling my.um.stud.93702021-02-25T00:19:51Z Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei Khor , Soo Wei Q Science (General) QD Chemistry This study demonstrated the application of chalcone based dithiocarbamate derivative as metal capturing ligands for the removal and pre-concentration of mercury ion (Hg2+). Chalcones are a group of naturally occurring compounds, which can be extracted from fruits, vegetables, plants, and spice. In the first part of this work, chalcone was first chemically modified to produce dithiocarbamate derivative, 3-oxo-1,3-diphenylpropyl-2-(naphthalen-2-ylamino) ethylcarbamodithioate (ODPPNE). After that, chalcone incorporated sol-gel (SG-C) and ODPPNE incorporated sol-gel (SG-ODPPNE) were prepared and used as adsorbents to remove Hg2+. The result showed that with the presence of dithiocarbamate functional group, SG-ODPPNE exhibited the high selectivity toward Hg2+ adsorption as compared to other metal ions. The effect of operating conditions (such as the size of adsorbent, adsorbent dosage, contact time, the initial concentration of Hg2+ and pH of solution) were examined for the adsorption of Hg2+ by SG-ODPPNE. The adsorption data were fitted well to Langmuir isotherm, and the monolayer adsorption capacity was found to be 13.5 mg/g. In the adsorption kinetic study, the obtained data were well fitted to pseudo-second order model. According to intraparticle diffusion model, the adsorption process of Hg2+ by SG-ODPPNE involves film diffusion, intraparticle diffusion, and equilibrium stages. For the second part of this study, ODPPNE incorporated silica was coated onto magnetic nanoparticle (ODPPNE@MNP). This ODPPNE@MNP was used as the solid phase in magnetic dispersive micro-solid phase extraction method (D- 2018-04 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/9370/1/Khor_Soo_Wei.pdf application/pdf http://studentsrepo.um.edu.my/9370/6/soo_wei.pdf Khor , Soo Wei (2018) Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/9370/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Khor , Soo Wei
Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
description This study demonstrated the application of chalcone based dithiocarbamate derivative as metal capturing ligands for the removal and pre-concentration of mercury ion (Hg2+). Chalcones are a group of naturally occurring compounds, which can be extracted from fruits, vegetables, plants, and spice. In the first part of this work, chalcone was first chemically modified to produce dithiocarbamate derivative, 3-oxo-1,3-diphenylpropyl-2-(naphthalen-2-ylamino) ethylcarbamodithioate (ODPPNE). After that, chalcone incorporated sol-gel (SG-C) and ODPPNE incorporated sol-gel (SG-ODPPNE) were prepared and used as adsorbents to remove Hg2+. The result showed that with the presence of dithiocarbamate functional group, SG-ODPPNE exhibited the high selectivity toward Hg2+ adsorption as compared to other metal ions. The effect of operating conditions (such as the size of adsorbent, adsorbent dosage, contact time, the initial concentration of Hg2+ and pH of solution) were examined for the adsorption of Hg2+ by SG-ODPPNE. The adsorption data were fitted well to Langmuir isotherm, and the monolayer adsorption capacity was found to be 13.5 mg/g. In the adsorption kinetic study, the obtained data were well fitted to pseudo-second order model. According to intraparticle diffusion model, the adsorption process of Hg2+ by SG-ODPPNE involves film diffusion, intraparticle diffusion, and equilibrium stages. For the second part of this study, ODPPNE incorporated silica was coated onto magnetic nanoparticle (ODPPNE@MNP). This ODPPNE@MNP was used as the solid phase in magnetic dispersive micro-solid phase extraction method (D-
format Thesis
author Khor , Soo Wei
author_facet Khor , Soo Wei
author_sort Khor , Soo Wei
title Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
title_short Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
title_full Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
title_fullStr Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
title_full_unstemmed Chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(II) ion / Khor Soo Wei
title_sort chalcone based dithiocarbamate derivative incorporated sol-gel for the removal and pre-concentration of aqueous mercury(ii) ion / khor soo wei
publishDate 2018
url http://studentsrepo.um.edu.my/9370/1/Khor_Soo_Wei.pdf
http://studentsrepo.um.edu.my/9370/6/soo_wei.pdf
http://studentsrepo.um.edu.my/9370/
_version_ 1738506257186160640
score 13.211869

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