Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim

Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim

The utilization of nanocarriers in the development of environmentally friendly herbicides has led to the creation of controlled release formulations. These formulations offer precise concentration and timed-release properties. To achieve this, zinc chloride (ZnCl2) and zinc nitrate hexahydrate (Zn (...

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Main Author: Abd Rahim, Hasnatul Fitriah
Format: Thesis
Language:English
Published: 2024
Subjects:
QD Chemistry
Online Access:https://ir.uitm.edu.my/id/eprint/107500/1/107500.pdf
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spelling my-uitm-ir.1075002024-12-09T22:41:30Z Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim 2024 Abd Rahim, Hasnatul Fitriah QD Chemistry The utilization of nanocarriers in the development of environmentally friendly herbicides has led to the creation of controlled release formulations. These formulations offer precise concentration and timed-release properties. To achieve this, zinc chloride (ZnCl2) and zinc nitrate hexahydrate (Zn (NO3)2.6H2O) were used as precursors to synthesize zinc layered hydroxide-chloride (ZLC) or zinc layered hydroxide-nitrate (ZLN). These compounds were then intercalated with 2-napthoxyacetic acid (BNOA), an herbicide, resulting in nanocomposites called Zinc layered hydroxide-2napthoxyacetic acid (ZLCB) and (ZLNB) through ion exchange. The formation of these nanocomposites was analysed using Powder X-Ray Diffraction (PXRD), which revealed an increase in the basal spacing from 7.9Å to 27.3Å in ZLCB and from 9.8Å to 28.2Å in ZLNB, indicating successful intercalation of the anions into the interlayer of the host material. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of BNOA anions within the interlayers of ZLCB and ZLNB by detecting the formation of COO- ions (carboxylate ions) a new peak at approximately 1611 cm-1 and 1616 cm-1 respectively. The surface area of ZLCB and ZLNB also increased from 6.61 m2g-1 to 27.47 m2g-1 and from 9.16 m2g-1 to 28.08 m2g-1 respectively, indicating the successful insertion of BNOA into the interlayers of ZLC and ZLN. Additionally, the loading percentage of BNOA, estimated using a CHNS analyser, was found to be 83.9% for ZLCB and 41.80% for ZLNB. The controlled release properties demonstrated that the release of BNOA in various aqueous solutions followed the order of Na3PO4 > Na2SO4 > NaCl and confirmed pseudo-second order kinetic models for both nanocomposites. 2024 Thesis https://ir.uitm.edu.my/id/eprint/107500/ https://ir.uitm.edu.my/id/eprint/107500/1/107500.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Sarijo, Siti Halimah
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
advisor Sarijo, Siti Halimah
topic QD Chemistry
spellingShingle QD Chemistry
Abd Rahim, Hasnatul Fitriah
Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
description The utilization of nanocarriers in the development of environmentally friendly herbicides has led to the creation of controlled release formulations. These formulations offer precise concentration and timed-release properties. To achieve this, zinc chloride (ZnCl2) and zinc nitrate hexahydrate (Zn (NO3)2.6H2O) were used as precursors to synthesize zinc layered hydroxide-chloride (ZLC) or zinc layered hydroxide-nitrate (ZLN). These compounds were then intercalated with 2-napthoxyacetic acid (BNOA), an herbicide, resulting in nanocomposites called Zinc layered hydroxide-2napthoxyacetic acid (ZLCB) and (ZLNB) through ion exchange. The formation of these nanocomposites was analysed using Powder X-Ray Diffraction (PXRD), which revealed an increase in the basal spacing from 7.9Å to 27.3Å in ZLCB and from 9.8Å to 28.2Å in ZLNB, indicating successful intercalation of the anions into the interlayer of the host material. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of BNOA anions within the interlayers of ZLCB and ZLNB by detecting the formation of COO- ions (carboxylate ions) a new peak at approximately 1611 cm-1 and 1616 cm-1 respectively. The surface area of ZLCB and ZLNB also increased from 6.61 m2g-1 to 27.47 m2g-1 and from 9.16 m2g-1 to 28.08 m2g-1 respectively, indicating the successful insertion of BNOA into the interlayers of ZLC and ZLN. Additionally, the loading percentage of BNOA, estimated using a CHNS analyser, was found to be 83.9% for ZLCB and 41.80% for ZLNB. The controlled release properties demonstrated that the release of BNOA in various aqueous solutions followed the order of Na3PO4 > Na2SO4 > NaCl and confirmed pseudo-second order kinetic models for both nanocomposites.
format Thesis
qualification_level Master's degree
author Abd Rahim, Hasnatul Fitriah
author_facet Abd Rahim, Hasnatul Fitriah
author_sort Abd Rahim, Hasnatul Fitriah
title Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
title_short Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
title_full Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
title_fullStr Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
title_full_unstemmed Synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (BNOA) nanocomposite / Hasnatul Fitriah Abd Rahim
title_sort synthesis, characterization and control release properties of single metal zinc layered hydroxide-2napthoxyacetic acid (bnoa) nanocomposite / hasnatul fitriah abd rahim
granting_institution Universiti Teknologi MARA (UiTM)
granting_department Faculty of Applied Sciences
publishDate 2024
url https://ir.uitm.edu.my/id/eprint/107500/1/107500.pdf
_version_ 1818588227049619456

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