Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates

The non-toxic tannic acid (TA) – zinc oxide (ZnO) nanocolloid has been facilely synthesised and characterised for consideration as a multifunctional nanostructure in a variety of application. The work presents a green hydrothermal synthesis of ZnO nanocolloids in the presence of an aqueous TA which...

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Main Authors:	Nurul Akmal, Che Lah, Nurshuhada, Mohamad, Mohd Mawardi, Saari, Mohd Rafie, Johan
Format:	Article
Language:	English
Published:	Institute of Physics Publishing 2019
Subjects:	Q Science (General) TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/7/Nanoscopic%20tannic%20acid.pdf

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recordtype	eprints
spelling	ump-242352019-07-17T04:26:26Z http://umpir.ump.edu.my/id/eprint/24235/ Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates Nurul Akmal, Che Lah Nurshuhada, Mohamad Mohd Mawardi, Saari Mohd Rafie, Johan Q Science (General) TP Chemical technology The non-toxic tannic acid (TA) – zinc oxide (ZnO) nanocolloid has been facilely synthesised and characterised for consideration as a multifunctional nanostructure in a variety of application. The work presents a green hydrothermal synthesis of ZnO nanocolloids in the presence of an aqueous TA which acts as both a capping as well as a structure directing agents. The aim of the work is particularly to extend the capability of ZnO on the light absorption spectrum toward the visible light region. The sol-gel hydrothermal reaction took less than 5 hours due to the reaction of gallotannin with citrate derivatives at low reaction temperatures (40 to 55°C). The properties of the nanoscopic size of TA-ZnO colloids were well characterised by combined characterisation techniques that include TEM, FESEM, UV-Vis and PL. The particle size and morphological properties of TA-ZnO nanostructures are feasible to alter by varying the reaction temperatures with the reaction solution maintained at an alkali pH. The mean nanoparticle size obtained was as small as 10 ± 1.2 nm. Although TA was noted to enfold around the ZnO nanostructures, the ZnO nanocolloids aggregates were not wholly influenced by TA as explored in this work. These findings suggest that TA could be a growth directing agent under alkaline conditions at low-temperature reactions. The overall results reflected that the exploration of eco-friendly TA-ZnO nanocolloids was a combination of pH solution and complexation reaction. This work will be one of the important means to understand further to which extent the TA performance influence the nature of ZnO nanocolloids at low-temperature process. Institute of Physics Publishing 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24235/7/Nanoscopic%20tannic%20acid.pdf Nurul Akmal, Che Lah and Nurshuhada, Mohamad and Mohd Mawardi, Saari and Mohd Rafie, Johan (2019) Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates. Materials Research Express, 6 (6). pp. 1-14. ISSN 2053-1591 https://doi.org/10.1088/2053-1591/ab099f https://doi.org/10.1088/2053-1591/ab099f
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General) TP Chemical technology
spellingShingle	Q Science (General) TP Chemical technology Nurul Akmal, Che Lah Nurshuhada, Mohamad Mohd Mawardi, Saari Mohd Rafie, Johan Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
description	The non-toxic tannic acid (TA) – zinc oxide (ZnO) nanocolloid has been facilely synthesised and characterised for consideration as a multifunctional nanostructure in a variety of application. The work presents a green hydrothermal synthesis of ZnO nanocolloids in the presence of an aqueous TA which acts as both a capping as well as a structure directing agents. The aim of the work is particularly to extend the capability of ZnO on the light absorption spectrum toward the visible light region. The sol-gel hydrothermal reaction took less than 5 hours due to the reaction of gallotannin with citrate derivatives at low reaction temperatures (40 to 55°C). The properties of the nanoscopic size of TA-ZnO colloids were well characterised by combined characterisation techniques that include TEM, FESEM, UV-Vis and PL. The particle size and morphological properties of TA-ZnO nanostructures are feasible to alter by varying the reaction temperatures with the reaction solution maintained at an alkali pH. The mean nanoparticle size obtained was as small as 10 ± 1.2 nm. Although TA was noted to enfold around the ZnO nanostructures, the ZnO nanocolloids aggregates were not wholly influenced by TA as explored in this work. These findings suggest that TA could be a growth directing agent under alkaline conditions at low-temperature reactions. The overall results reflected that the exploration of eco-friendly TA-ZnO nanocolloids was a combination of pH solution and complexation reaction. This work will be one of the important means to understand further to which extent the TA performance influence the nature of ZnO nanocolloids at low-temperature process.
format	Article
author	Nurul Akmal, Che Lah Nurshuhada, Mohamad Mohd Mawardi, Saari Mohd Rafie, Johan
author_facet	Nurul Akmal, Che Lah Nurshuhada, Mohamad Mohd Mawardi, Saari Mohd Rafie, Johan
author_sort	Nurul Akmal, Che Lah
title	Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
title_short	Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
title_full	Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
title_fullStr	Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
title_full_unstemmed	Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates
title_sort	nanoscopic tannic acid - zno colloid: low temperature synthesis and the influence of ph on the aggregates
publisher	Institute of Physics Publishing
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/ http://umpir.ump.edu.my/id/eprint/24235/7/Nanoscopic%20tannic%20acid.pdf
first_indexed	2023-09-18T22:36:33Z
last_indexed	2023-09-18T22:36:33Z
_version_	1777416633929695232

Nanoscopic tannic acid - ZnO colloid: Low temperature synthesis and the influence of pH on the aggregates

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