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

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Particuology 2020年第2期18卷 24-32页

作者： nazerah ahmad Nik Abdul Hadi Md Nordin Juhana Jaafar Nik ahmad Nizam Nik Malek ahmad Fauzi Ismail Muhammad Nabil Fikri Yahya Siti Aishah Mohd Hanim Mohd Sohaimi Abdullah Advanced Membrane Technology Research Centre Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia Malaysian Institute of Chemical Engineering Technology-Universiti Kuala Lumpur Lot 1988Bandar VendorTaboh Naning78000 Alor GajahMelakaMalaysia Chemical Engineering Department Universiti Teknologi PETRONAS32610 Seri IskandarPerakMalaysia Department of Biosciences Faculty of ScienceUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia Centre for Student Innovation and Technology Entrepreneurship Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia

We report a rapid method for synthesis of zeolitic imidazolate framework 8(ZIF-8)-decorated graphene oxide(GO)composites(ZGO)with good antibacterial *** ZGO composites were synthesized at room temperature with low GO to metal salt *** samples were characterized by X-ray diffraction,transmission electron microscopy,Fourier transform infrared spectroscopy,thermal gravimetric analysis,and surface area *** 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 *** 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)***-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 *** and *** of 5 times lower than those of pristine *** antibacterial mechanisms are proposed based on field-emission scanning electron microscope images of the two bacteria after contact with the synthesized ***,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.

关键词： Graphene oxide Metal-organic framework Hybrid nanocomposite Zeolitic imidazolate framework Antibacterial agent

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