New synthesis, characterization and antibacterial properties of porous ZnO and C-ZnO micrometre-sized particles of narrow size distribution

Gordon, Tamar; Kopel, Moran; Grinblat, Judith; Banin, Ehud; Margel, Shlomo

doi:10.1039/c2jm15510a

Cited by 23 publications

(17 citation statements)

References 58 publications

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“…This estimation is supported by the thermogravimetric analysis of the ZnCl 2 -PDVB microspheres (Figure 10A), demonstrate one slope between 30 and 120 °C, corresponding to the reaction of ZnCl 2 with water to produce ZnO, and another steep slope between 380 and 540 °C, corresponding to the PDVB template microspheres decomposition, shown also in previous studies [16]. These observations are in good agreement with the DSC results, poses two endothermic peaks: around 60 and around 460 °C (Figure 10B).…”

Section: Resultssupporting

confidence: 85%

“…ZnO and C-ZnO microparticles were then prepared by decomposition of these zinc acetate entrapped PDVB particles in an air or inert atmosphere, respectively [16]. In the present study, we demonstrate the preparation of “cauliflower-like” ZnO microparticles, using the same PDVB porous template microspheres.…”

Section: Introductionmentioning

confidence: 82%

“…Our previous study described the formation of porous spherical shaped micrometer-sized ZnO and C-ZnO particles of narrow sized distribution by entrapping zinc acetate within the pores of uniform polydivinyl benzene (PDVB) porous microspheres. ZnO and C-ZnO microparticles were then prepared by decomposition of these zinc acetate entrapped PDVB particles in an air or inert atmosphere, respectively [ 16 ]. In the present study, we demonstrate the preparation of “cauliflower-like” ZnO microparticles, using the same PDVB porous template microspheres.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of “Cauliflower-Like” ZnO Micron-Sized Particles

2013

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Porous polydivinyl benzene (PDVB) microspheres of narrow size distribution were formed by a single-step swelling process of template uniform polystyrene microspheres with divinyl benzene (DVB), followed by polymerization of the DVB within the swollen template microspheres. The PDVB porous particles were then formed by dissolution of the template polystyrene polymer. Unique “cauliflower-like” ZnO microparticles were prepared by the entrapping of the ZnO precursor ZnCl2 in the PDVB porous microspheres under vacuum, followed by calcination of the obtained ZnCl2-PDVB microspheres in an air atmosphere. The morphology, crystallinity and fluorescence properties of those ZnO microparticles were characterized. This “cauliflower-like” shape ZnO particles is in contrast to a previous study demonstrated the preparation of spherical shaped porous ZnO and C-ZnO microparticles by a similar method, using zinc acetate (ZnAc) as a precursor. Two diverted synthesis mechanisms for those two different ZnO microparticles structures are proposed, based on studies of the distribution of each of the ZnO precursors within the PDVB microspheres.

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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Preparation of “Cauliflower-Like” ZnO Micron-Sized Particles

2013

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“…We were motivated to explore the preparation of ordered films of hollow spheres of a TCO such as AZO for photoelectrochemical applications. Undoped ZnO microspheres that have been used as powders for photocatalysis, [11][12][13][14][15][16] and as disordered supports for dyesensitized solar cells, 5, 17-20 gas sensors [21][22][23] and media for Li-ion batteries. 24 In addition, monolayers of ordered arrays of ZnO urchin-like structures derived from nanorods have been reported.…”

Section: 10mentioning

confidence: 99%

Ordered multilayer films of hollow sphere aluminium-doped zinc oxide for photoelectrochemical solar energy conversion

et al. 2017

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“…Zinc oxide nanoparticles indicate more antimicrobial activities than large particles, since the high surface-to-volume ratio of nanoparticles allows for better interaction with bacteria [10,11]. Zinc oxide nanoparticles have been shown to have a wide range of antibacterial activities including major food-borne pathogens like Escherichia coli, Salmonella, Listeria monocytogenes and Staphylococcus aureus.…”

Section: Introductionmentioning

confidence: 99%

Zinc Oxide Supported onto Biogenic Silica from Gigantochloa atroviolacea Leaves: Preparation, Characterization and Antibacterial Activity

Sriwahyuni

Prodjosantoso

Sasmita³

2019

Asian J. Chem.

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Bamboo rod is a well known raw material utilized to make houses, papers, handicrafts, chopsticks and medicines. On the other hand, the utilzation of leaves, which are often considered as garbages, receive less attentions. Even though, bamboo leaves are good sources of SiO2 or silica. This work reports the preparation of zinc oxide (ZnO) supported onto biogenic silica (SiO2) from leaves of Gigantochloa atroviolacea, characterization and the antibacterial activities of ZnO@SiO2 against Staphylococcus epidermidis. The ZnO was supported onto biogenic SiO2 by using impregnation method of SiO2 in zinc salt [Zn(NO3)2·6H2O] solution. A combination XRD and SEM-EDX techniques were used to confirm the formation of ZnO on ZnO@SiO2. Investigations indicate that the as prepared ZnO@SiO2 revealed significant antibacterial activity against Staphylococcus epidermidis bacterial strain.

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New synthesis, characterization and antibacterial properties of porous ZnO and C-ZnO micrometre-sized particles of narrow size distribution

Cited by 23 publications

References 58 publications

Preparation of “Cauliflower-Like” ZnO Micron-Sized Particles

Preparation of “Cauliflower-Like” ZnO Micron-Sized Particles

Ordered multilayer films of hollow sphere aluminium-doped zinc oxide for photoelectrochemical solar energy conversion

Zinc Oxide Supported onto Biogenic Silica from Gigantochloa atroviolacea Leaves: Preparation, Characterization and Antibacterial Activity

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