Synthesis and characterization of ZnO nanostructures with antimicrobial properties

Yiamsawas, Doungporn; Boonpavanitchakul, Kanittha

doi:10.1109/iconn.2008.4639264

Cited by 13 publications

(15 citation statements)

References 15 publications

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“…Thus, the swelling ratio of hydrogel-silver nanocomposites improved upon formation of Ag o nanoparticles by the reduction reaction. The improvement of the swelling capacity in the hydrogel-silver nanocomposites can be attributed to the presence of silver nanoparticles of different sizes and different surface charges in the hydrogel network (Gils et al, 2010;Murthy et al, 2008;Vimala et al, 2009, Yiamsawas et al, 2008. As a result, the order of the swelling capacity of the gels is the following: H > HSNC > HS.…”

Section: Swelling Studiesmentioning

confidence: 98%

“…For this study, 150 mg of HSNC was dispersed in 15 mL of deionized water for 2 days to extract all silver nanoparticles into the aqueous phase and absorption spectra recorded with a scan range of 200-600 nm for these solutions. As shown in Figure 7, the spectra of HSNC samples have a characteristic absorption peak at around 405-410 nm due to the surface-plasmon resonance band of the silver nanoparticles (Yiamsawas et al, 2008;Mohan et al, 2007), indicating the presence of silver nanoparticles (Varapsad et al, 2010) in the hydrogel structure. …”

Section: Uv-vis Spectroscopic Analysesmentioning

confidence: 99%

“…Hydrogels have been used in agricultural applications, the food industry, water treatment processes, and biotechnological and medical fields (Karadağ et al, 1997;Karadağ and Üzüm, 2012;Ju et al, 2009;Özkahraman et al, 2011). Today, hydrogel-silver nanocomposites have also been widely used in biomedical applications (Kim et al, 2004;Yiamsawas et al, 2008;Gils et al, 2010;Guzman et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Poly(acrylic acid-co-acrylamide) (Yiamsawas et al, 2008;Thomas et al, 2007;Buikliskii et al, 2012;Mohan et al, 2010;Aggor et al, 2010), poly(acrylamide)/poly(vinyl pyrrolidone) (Murthy et al, 2008), poly(acrylamide)/poly(vinyl alcohol) , poly(2-hydroxyethyl methacrylate-co-acrylic acid) (Gils et al, 2010) , poly(ethylene glycol dimethacrylate-co-acrylonitrile) (Kim et al, 2004), poly(N-isopropylacrylamide)-cosodium acrylate) Mohan et al, 2006); poly(N-isopropylacrylamide-co-acrylic acidco-butylmethacrylate) (Thatiparti et al, 2009), poly (acrylamide-co-2-acrylamido-2-methylpropanesulfonic acid) (Ravindra et al, 2012), poly(2-hydroxyethyl methacrylate-(poly(ethylene glycol) methyl ether methacrylate-methacrylic acid) (Xiang and Chen, 2007), poly(N,N-dimethylacrylamide)-g-poly(vinyl alcohol) (Luo et al, 2009) and poly(2-hydroxylethyl acrylate)epoly(ethylenimine) (Ho et al, 2004) based hydrogel-silver nanocomposites have been previously synthesized.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Copolymeric and Terpolymeric Hydrogel-Silver Nanocomposites Based on Acrylic Acid, Acrylamide and Itaconic Acid: Investigation of Their Antibacterial Activity Against Gram-Negative Bacteria

Bal

Çepni

Çakır

et al. 2015

Braz. J. Chem. Eng.

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-In this study, copolymeric and terpolymeric hydrogel-silver nanocomposites based on poly(acrylamideco-itaconic acid), poly(acrylic acid-co-itaconic acid) and poly(acrylic acid-co-acrylamide-co-itaconic acid) were synthesized by free-radical polymerization. These nanocomposites were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), UV-Visible Spectrophotometry (UVVis) and X-Ray Diffraction (XRD) analysis, as well as their swelling behaviors. In addition, antibacterial properties of these hydrogel-silver nanocomposites were investigated against Pseudomonas aeruginosa. Acrylic-based hydrogel-silver nanocomposites demonstrated antibacterial activity against Gram-negative bacteria. These hydrogel-silver nanocomposites can be used as antibacterial material in the medical field.

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Section: Swelling Studiesmentioning

confidence: 98%

Section: Uv-vis Spectroscopic Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and Characterization of Copolymeric and Terpolymeric Hydrogel-Silver Nanocomposites Based on Acrylic Acid, Acrylamide and Itaconic Acid: Investigation of Their Antibacterial Activity Against Gram-Negative Bacteria

Bal

Çepni

Çakır

et al. 2015

Braz. J. Chem. Eng.

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“…On the basis of that as of now many efforts have been made to synthesize ZnO nanoparticles with controlled particle size distribution and morphology. Various synthesizing routes such as hydrothermal methods , electrochemical method , solvothermal method , thermal decomposition method , chemical vapor deposition , laser ablation technique , direct precipitation methods , and sol–gel method , are subsequently adopted by others. Among these processing routes, the sol–gel method is the most popular and largely adopted by scientists, owing to its simplicity, cost effectiveness, reliability, repeatability, and eco‐friendliness.…”

Section: Introductionmentioning

confidence: 99%

Morphological dissimilarities of ZnO nanoparticles and its effect on thermo‐physical behavior of epoxy composites

et al. 2016

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The work demonstrated the effect of ZnO nanoparticles with varied morphology on the thermal stability of epoxy composites. Optimization of three key parameters such as the molar ratio of ZnSO 4 /NaOH, reaction time, and calcination temperature was performed using Taguchi design method. The ZnO nanostructures of three categories such as nanoplatelets (PZs), nanospheres (SZs), and nanoplatelets/nanorods (CZs) were successfully grown by controlled process parameters. Field emission electron microscope, transmission electron microscopy, and X-ray diffraction were used to determine the size, morphology, and crystallite size of ZnO nanostructures. The effect ZnO nanoparticle morphology on thermal properties of epoxy composites was investigated by thermogravimetric analysis. The TGA analysis demonstrated the significant effect of PZs on the enhancement of thermal stability of epoxy composites. This work, thus, exposed the ability of PZs for its symptomatic espousal as reinforcement in polymer to improve thermo-physical behavior. POLYM.

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P–N Heterojunction System Eu‐Doped ZnO@GO for Photocatalytic Water Splitting

Gurbani

Chouhan

2023

Global Challenges

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202200106graphene, created by vigorously oxidizing graphite [4][5][6] and is thought of as a single sheet of graphene that is retaining different oxygen-containing groups on both sides of the basal plane as well as on the edges. [7] Due to the creation of sp 3 hybridized C-atoms, which interfere with the π-conjugation in the graphene sheet, GO functions differently from pure graphene and acting as an insulator or shows the p-type semiconducting behavior. [8][9][10] It has been shown that the conduction band (CB) minimum of GO is composed of π* orbitals, which have a higher energy level than that needed for hydrogen generation. Graphene and graphene-based materials are currently being used vigorously for energy conversion applications, including the solar hydrogen generation from water splitting. [11,12] There have been numerous attempts to improve the photocatalytic performance of semiconductor photocatalysts by integrating graphene with them for various applications. [13][14][15][16][17][18] ZnO is an inexpensive, wide-bandgap semiconductor with a bandgap of 3.37 eV, which corresponds to a wavelength of about 375 nm. Its high photoreactivity, good photostability, and low cost favor its use in photocatalytic water splitting (PWS), but its limitations include photocorrosion, backward reaction, poor stability, and inability to absorb visible light. [19] To get around these problems, modifications have been made like coupling with other semiconductors and doping with metal, rare-earth metal, or non-metal ions. [20][21][22][23] Recently, rare-earth metal-doped ZnO has caught the attention of material scientists in this direction because of its superior activity and selectivity to pure ZnO as well as its higher absorption efficiency in the visible region, which can be used to create better optoelectronic devices for harvesting visible light. The dopant causes competitive defects in the ZnO surface, bulk, and lattice. Due to their role in the bandgap contraction and the separation effect of the photocarriers (photoelectron (e − ) and photohole (h + )), these defects are wanted at the surface.The imperfectly filled 4f orbitals of rare-earth metals can trap electrons, reducing charge recombination and enhancing photocatalytic activity. [23] By interacting with 4f orbitals of lanthanoid ions with a variety of functional groups of GO, the light harvesting power of composite will enhanced. In comparison to pure TiO 2 , Khalid et al. studied the La/TiO 2graphene composites revealed higher visible light absorption and improved charge separation capability. Ahmad et al. [25] synthesized europium and terbium -doped ZnO photocatalyst and Here, a feather-like Eu-doped ZnO (particle size ≈ 34.87 µm and E g ≈ 3.13 eV) nanoassembly is synthesized by using the capping agent cetyltrimethylammonium bromide-supported hydrothermal method. The Eu-doped ZnO is loaded onto the graphene oxide (GO) surface as Eu-doped ZnO@GO (particle size ≈ 23.07 µm and E g ≈ 0.79 eV) and applied to measure the photocatalytic water splitting activity in 20% ...

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Synthesis and characterization of ZnO nanostructures with antimicrobial properties

Cited by 13 publications

References 15 publications

Synthesis and Characterization of Copolymeric and Terpolymeric Hydrogel-Silver Nanocomposites Based on Acrylic Acid, Acrylamide and Itaconic Acid: Investigation of Their Antibacterial Activity Against Gram-Negative Bacteria

Synthesis and Characterization of Copolymeric and Terpolymeric Hydrogel-Silver Nanocomposites Based on Acrylic Acid, Acrylamide and Itaconic Acid: Investigation of Their Antibacterial Activity Against Gram-Negative Bacteria

Morphological dissimilarities of ZnO nanoparticles and its effect on thermo‐physical behavior of epoxy composites

P–N Heterojunction System Eu‐Doped ZnO@GO for Photocatalytic Water Splitting

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