Staff View: Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement

Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement

We report a rapid method for synthesis of zeolitic imidazolate framework 8 (ZIF-8)-decorated graphene oxide (GO) composites (ZGO) with good antibacterial properties. The ZGO composites were synthesized at room temperature with low GO to metal salt ratios. The samples were characterized by X-ray diff...

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Main Authors:	Ahmad, Nazerah, Nordin, N. A. H., Jaafar, J., Malek, N., Ismail, A., Yahya, Muhammad Nabil Fikri, Mohd. Hanim, Siti Aishah, Abdullah, M. S.
Format:	Article
Published:	Elsevier B. V. 2020
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86780/ http://dx.doi.org/10.1016/j.partic.2019.04.007
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spelling	my.utm.867802020-09-30T09:08:10Z http://eprints.utm.my/id/eprint/86780/ Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement Ahmad, Nazerah Nordin, N. A. H. Jaafar, J. Malek, N. Ismail, A. Yahya, Muhammad Nabil Fikri Mohd. Hanim, Siti Aishah Abdullah, M. S. TP Chemical technology We report a rapid method for synthesis of zeolitic imidazolate framework 8 (ZIF-8)-decorated graphene oxide (GO) composites (ZGO) with good antibacterial properties. The ZGO composites were synthesized at room temperature with low GO to metal salt ratios. The samples were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis, and surface area analysis. The characterization results show that ZIF-8 with a size of approximately 120 nm is successfully decorated on the surface of GO sheets with the host ZIF-8 framework maintained in the synthesized composite, but there is a significant reduction in the Brunauer–Emmett–Teller surface area. The antibacterial activities of the samples against Escherichia coli ATCC 11229 and Staphylococcus aureus ATCC 6538 as model strains of gram-negative and -positive bacteria, respectively, were determined by disc diffusion and minimum inhibitory concentration (MIC) tests. ZGO-1.0 (1 wt% of ratio of GO to metal salt) shows the highest antibacterial activity with MIC values required to inhibit bacterial growth of E. coli and S. aureus of 5 times lower than those of pristine ZIF-8. Different antibacterial mechanisms are proposed based on field-emission scanning electron microscope images of the two bacteria after contact with the synthesized composite. Overall, owing to the simple synthesis, good stability, low chemical usage, and excellent antibacterial activity of the ZGO composites, they show great potential for application in the field of microbial contamination control. Elsevier B. V. 2020-04 Article PeerReviewed Ahmad, Nazerah and Nordin, N. A. H. and Jaafar, J. and Malek, N. and Ismail, A. and Yahya, Muhammad Nabil Fikri and Mohd. Hanim, Siti Aishah and Abdullah, M. S. (2020) Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement. Particuology, 49 . pp. 24-32. ISSN 1674-2001 http://dx.doi.org/10.1016/j.partic.2019.04.007
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ahmad, Nazerah Nordin, N. A. H. Jaafar, J. Malek, N. Ismail, A. Yahya, Muhammad Nabil Fikri Mohd. Hanim, Siti Aishah Abdullah, M. S. Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
description	We report a rapid method for synthesis of zeolitic imidazolate framework 8 (ZIF-8)-decorated graphene oxide (GO) composites (ZGO) with good antibacterial properties. The ZGO composites were synthesized at room temperature with low GO to metal salt ratios. The samples were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis, and surface area analysis. The characterization results show that ZIF-8 with a size of approximately 120 nm is successfully decorated on the surface of GO sheets with the host ZIF-8 framework maintained in the synthesized composite, but there is a significant reduction in the Brunauer–Emmett–Teller surface area. The antibacterial activities of the samples against Escherichia coli ATCC 11229 and Staphylococcus aureus ATCC 6538 as model strains of gram-negative and -positive bacteria, respectively, were determined by disc diffusion and minimum inhibitory concentration (MIC) tests. ZGO-1.0 (1 wt% of ratio of GO to metal salt) shows the highest antibacterial activity with MIC values required to inhibit bacterial growth of E. coli and S. aureus of 5 times lower than those of pristine ZIF-8. Different antibacterial mechanisms are proposed based on field-emission scanning electron microscope images of the two bacteria after contact with the synthesized composite. Overall, owing to the simple synthesis, good stability, low chemical usage, and excellent antibacterial activity of the ZGO composites, they show great potential for application in the field of microbial contamination control.
format	Article
author	Ahmad, Nazerah Nordin, N. A. H. Jaafar, J. Malek, N. Ismail, A. Yahya, Muhammad Nabil Fikri Mohd. Hanim, Siti Aishah Abdullah, M. S.
author_facet	Ahmad, Nazerah Nordin, N. A. H. Jaafar, J. Malek, N. Ismail, A. Yahya, Muhammad Nabil Fikri Mohd. Hanim, Siti Aishah Abdullah, M. S.
author_sort	Ahmad, Nazerah
title	Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
title_short	Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
title_full	Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
title_fullStr	Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
title_full_unstemmed	Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
title_sort	eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement
publisher	Elsevier B. V.
publishDate	2020
url	http://eprints.utm.my/id/eprint/86780/ http://dx.doi.org/10.1016/j.partic.2019.04.007
_version_	1680321094385401856
score	13.211869

Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement

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