Effect of Surfactant on Growth of ZnO Nanodumbbells and Their Characterization

Babu, E. Sunil; Kim, Sungjin; Jeong, Soon Wook

doi:10.1155/2017/1728345

Cited by 11 publications

(5 citation statements)

References 22 publications

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“…This chemistry was reported to be responsible for the surface-controlled defect potentials of ZnO [41]. In a similar way, for the ZnO-SDS sample, some studies reported the effectiveness of SDS in the formation of a bare crystalline phase by acting as a growth template in the functionalization of ZnO NPs [42]. Since SDS has S=O groups that could act as proton receptors, and, in aqueous solution, they ionize into Na + (S) and CH 3 (CH 2 ) 11 OSO 3 − (DS − ).…”

Section: Physicochemical Characterization Of Surface-modified Zno Npsmentioning

confidence: 63%

“…Since SDS has S=O groups that could act as proton receptors, and, in aqueous solution, they ionize into Na + (S) and CH 3 (CH 2 ) 11 OSO 3 − (DS − ). The formed ions in contact with the polar faces of ZnO reduce its surface defects and facilitate the formation of small crystalline particles [42]. Ahson et al (2020) observed that the hydrothermal growth with SDS favored the formation of small crystalline ZnO NPs, i.e., the bare polar planes of ZnO favor the formation of more oxygen vacancies [43].…”

Section: Physicochemical Characterization Of Surface-modified Zno Npsmentioning

confidence: 99%

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Influence of Surface Coating towards the Controlled Toxicity of ZnO Nanoparticles In Vitro

et al. 2023

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The uncertainties in ZnO-mediated toxicity and particle stability in a biological system remain a challenge and mitigate against deployment as next-generation nanoparticles (NPs), especially in biomedical applications. With that perspective, the present study investigates the surface chemical properties of ZnO NPs coated with three different surfactant biomolecules, namely polyethylene glycol (PEG), cetyltrimethylammonium bromide (CTAB), and sodium dodecyl sulfate (SDS) to control the toxicity-induced potentials. On the testing of the surface-functionalized ZnO NPs, notable changes in the particle sizes, morphology, zeta potential, and hydrodynamic size compared to the pure ZnO NPs are observed. In addition, FTIR spectroscopy, TGA, XRD, XPS, and HRTEM analysis showed significant changes in the surface structures and surface functional groups of the three different ZnO NPs on surface functionalization. Following the physical characterization, the cell viability of rat liver BRL-3A-treated ZnO–PEG, ZnO–CTAB, and ZnO–SDS compared to pure ZnO NPs (<50%) falls between 70% and 95% in a dose-determined manner. The cells treated with the pure ZnO NPs showed a higher percentage of apoptotic cells (~61%), which is significantly higher than the 3.4%, 1.5%, and 0.6% for ZnO–PEG-, ZnO–CTAB-, and ZnO–SDS-treated cells (respectively). Furthermore, the surface functionalization was significantly observed to reduce the content of reactive oxygen species (ROS) to 13.6%, 9.7%, and 2.6% compared to the content level of ~71% from the pure ZnO-treated cells. Besides the marked impairment of mitochondrial potentials induced by the pure ZnO NPs, the surfactant–ZnO NPs were observed to slow down the induction of DNA fragmentation and retain the structural integrity of mitochondrial membranes. The toxicity effects are controlled in the order of ZnO–SDS > ZnO–CTAB > ZnO–PEG, i.e., anionic > cationic > non-ionic. Overall from the analysis, the study stresses the importance of having a suitable surface ligand for the ZnO NPs so as to use them in the biomedical sector.

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Section: Physicochemical Characterization Of Surface-modified Zno Npsmentioning

confidence: 63%

Section: Physicochemical Characterization Of Surface-modified Zno Npsmentioning

confidence: 99%

Influence of Surface Coating towards the Controlled Toxicity of ZnO Nanoparticles In Vitro

et al. 2023

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“…EADI et al reported that SDS has a positive effect on the crystallinity of ZnO powders. In this procedure, (SO 4 2-) unit was absorbed to the (0001) face of ZnO from a nut-like structure and the (SO 4 2-) unit was sandwiched between two (0001) faces and ZnO crystal growth happened along (0001) faces [44]. The difference between the pattern of PEG-70 and other samples could be due to the presence of the Zn(OH) 2 along with ZnO [41].…”

Section: Structural Analysismentioning

confidence: 99%

The effect of cationic, anionic and nonionic surfactants on morphology and antibacterial properties of zinc oxide

Bazari

Najmoddin

2022

Matéria (Rio J.)

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In this study, zinc oxide was synthesized through wet chemical method at room temperature (RT), 40 °C and 60 °C without surfactant and at the presence of cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polyethylene glycol (PEG 6000) as cationic, anionic and non-ionic surfactants, respectively. Field emission scanning electron microscopy (FESEM) was used to investigate the effect of temperature and type of surfactants on the morphology of zinc oxide. FESEM images showed that the morphology of zinc oxide changed from rod-like at room temperature with increasing temperature. The morphology of zinc oxide samples synthesized by CTAB, SDS, and PEG surfactants was worm-like, nut-like and rod-like, respectively. The results of X-ray diffraction spectroscopy (XRD) analysis indicated the presence of zinc oxide phase in all samples. Zn(OH) 2 phase was also detected in the sample synthesized with PEG 6000. Fourier-transform infrared spectroscopy (FTIR) analysis was used to evaluate the functional groups. Antibacterial activity of zinc oxide samples against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) strains was evaluated by using disc diffusion technique and colony-forming unit (CFU) method. Both methods confirmed the antibacterial activity of all samples. Moreover, the highest antibacterial activity was shown for the sample synthesized in the presence of PEG as a surfactant.

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“…Alammar et al have studied the effect of five different ILs on ZnO morphologies, and claimed that the habitus and morphology come as the system naturally tends to reduce the total surface energy during formation; it is to note that the anion of the IL is proposed to be interacting with the ZnO surface during the growth [134]. Yet, the best performance was for ZnO nanoparticles that are obtained by use of IL with a long alkyl chain, reaching 95% in 9 h for methyl orange decomposition, proposing that along with high surface area, oxygen vacancies and polar plans that act like electron traps are the main factors for such interesting photocatalytic activity [135,136]. It was also reported by Amde et al [137] that common techniques for the determination of fungicide concentration in water are usually non-environmentally friendly, organic solvent, and time consuming; the group has prepared ZnO nanofluids by a green two-step method, dispersing the as-synthesized sol-gel ZnO nanoparticles in 1-hexyl-3-methylimidazolium hexafluorophosphate, hand shaking it to attain a homogeneous distribution, then sonicating it to break NPs clusters.…”

Section: Ionic Liquid As Solvents For Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis of Zinc Oxide Nanostructures

Işık¹,

Hilal²,

Horzum³

2019

Zinc Oxide Based Nano Materials and Devices

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ZnO-based nanomaterials have been proven to be of great use for several leading applications since the beginning of nanoscience due to the abundance of zinc element and the relatively easy conversion of its oxide to nanostructures. Nowadays, ZnO as nanoparticles, nanowires, nanofibers as well as plenty of other sophisticated nanostructures takes place among the pioneer nanomaterials employed in the photovoltaic systems, fuel cells, and biomedical fields. Nevertheless, optimizing energy consumption and being eco-friendly are the challenging requirements that are still to be overcome for their synthesis. Green chemistry has been strongly presented recently in the scientific arena as an adequate potential alternative; worldwide investigations have been held on subjects involving bacteria, fungus, or algae-based synthesis as efficient options, and some of the intriguing scientific findings on this subject are reported hereafter.

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Effect of Surfactant on Growth of ZnO Nanodumbbells and Their Characterization

Cited by 11 publications

References 22 publications

Influence of Surface Coating towards the Controlled Toxicity of ZnO Nanoparticles In Vitro

Influence of Surface Coating towards the Controlled Toxicity of ZnO Nanoparticles In Vitro

The effect of cationic, anionic and nonionic surfactants on morphology and antibacterial properties of zinc oxide

Green Synthesis of Zinc Oxide Nanostructures

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