Synthesis and characterization of (Ni, Sb)-co-doped rutile ceramic pigment via mechanical activation-assisted solid-state reaction--颗粒学报PARTICUOLOGY

Ahmad, N., Md Nordin, N. A. H., Jaafar, J., Nik Malek, N. A. N., Ismail, A. F., Yahya, M. N. F., . . . Abdullah, M. S. (2020). Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement. Particuology, 49, 24-32. https://doi.org/10.1016/j.partic.2019.04.007

Synthesis and characterization of (Ni, Sb)-co-doped rutile ceramic pigment via mechanical activation-assisted solid-state reaction

Nazerah Ahmad ^{a b}, Nik Abdul Hadi Md Nordin ^c, Juhana Jaafar ^a, Nik Ahmad Nizam Nik Malek ^e, Ahmad Fauzi Ismail ^a *, Muhammad Nabil Fikri Yahya ^d, Siti Aishah Mohd Hanim ^e, Mohd Sohaimi Abdullah^a

a Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
b Malaysian Institute of Chemical Engineering Technology-Universiti Kuala Lumpur, Lot 1988, Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia
c Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
d Centre for Student Innovation and Technology Entrepreneurship, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
e Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

10.1016/j.partic.2017.12.016

Volume 41, December 2018, Pages 20-29

Received 9 October 2017, Revised 21 December 2017, Accepted 28 December 2017, Available online 25 May 2018, Version of Record 1 November 2018.

E-mail: afauzi@utm.my

Highlights

• Ni/Sb-co-doped rutile pigment was prepared via mechanical activation and solid-state route.

• Mechanical activation favors the formation of new phases, i.e., brookite/rutile.

• Mechanical activation decreased rutile formation temperature.

• Mechanical activation improved the color performance of pigments.

Abstract

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.

Graphical abstract

Keywords

Mechanical activation; Solid-state synthesis; (Ni, Sb)-co-doped rutile; Ceramic pigment

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