Sonochemical synthesis of iron-graphene oxide/honeycomb-like ZnO ternary nanohybrids for sensitive electrochemical detection of antipsychotic drug chlorpromazine

Sebastian, Neethu; Yu, Wan-Chin; Hu, Yu-Chung; Balram, Deepak; Yu, Yuan-Hsiang

doi:10.1016/j.ultsonch.2019.104696

Cited by 46 publications

(20 citation statements)

References 68 publications

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“…Researchers have been concluded that the photocatalytic performance of nanomaterials significantly depends upon the synthesis route, size, shape, crystallinity and dimension [32][33][34][35][36]. At present, different researchers have prepared ZnO nanostructures by different synthesis methods i.e., sol-gel [37][38][39], hydrothermal [40][41][42], co-precipitation [43][44][45], green [46][47][48][49], electrospinning [50,51] and sonochemical [52,53]. The sonochemical method among all mentioned methods has been proven to be a more economic, efficient and facile approach used for the synthesis of nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

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This present study proposed a successful one pot synthesis of zinc oxide nanoparticles (ZnO NPs) and their optimisation for photocatalytic applications. Zinc chloride (ZnCl2) and sodium hydroxide (NaOH) were selected as chemical reagents for the proposed study. The design of this experiment was based on the reagents’ amounts and the ultrasonic irradiations’ time. The results regarding scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of ZnO NPs with pure hexagonal wurtzite crystalline structure in all synthesised samples. Photocatalytic activity of the developed samples was evaluated against methylene blue dye solution. The rapid removal of methylene blue dye indicated the higher photocatalytic activity of the developed samples than untreated samples. Moreover, central composite design was utilised for statistical analysis regarding the obtained results. A mathematical model for the optimisation of input conditions was designed to predict the results at any given point. The role of crystallisation on the photocatalytic performance of developed samples was discussed in detail in this novel study.

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Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

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“…36,40 Likewise, the peak in Figure 4C is also split into two components of COOH at 532.9 eV and C-O (epoxy) at 532.4 eV, which matched the peak of GO with hydrophilic feature. 37,41 Similarly, the peak shown in Figure 3D is the N1s peak that was additionally added in GO (hydrophilic) after argon plasma treatment as our synthesis process was operating in an open environment. The peak is split into two components, cyanide (N≡C) at 399.7 eV and NH 2 at 401.4 eV.…”

Section: Resultsmentioning

confidence: 99%

<p>Synthesis of Graphene Oxide Using Atmospheric Plasma for Prospective Biological Applications</p>

Alam

Park

et al. 2020

IJN

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Introduction This paper presents a novel technique for the synthesis of graphene oxide (GO) with various surface features using high-density atmospheric plasma deposition. Furthermore, to investigate the use of hydrophobic, super-hydrophobic, and hydrophilic graphene in biological applications, we synthesized hydrophobic, super-hydrophobic, and hydrophilic graphene oxides by additional heat treatment and argon plasma treatment, respectively. In contrast to conventional fabrication procedures, reduced graphene oxide (rGO) formed under low pressure and high-temperature environment using a new synthesis method—developed and described in this study—offers a convenient deposition method on any kind surface with controlled wettability. Methods High density at atmospheric plasma is used for the synthesis of rGO and GO and its biocompatibility based on various wetting properties was evaluated using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, and the viability of cells in response to rGO and GO with various surface features was investigated. Structural integrity was characterized by Raman spectroscopy, FESEM and FE-TEM. Wettability was measured via contact angle method and confirmed with XPS analysis. Results We found that GO coating with a hydrophilic feature is more biocompatible than other surfaces as observed in case of fibroblast cells. We have shown that wettability—controlled by GO deposition—influences biocompatibilities and antibacterial effect of biomaterial surfaces. Discussion Measuring the contact angle, it is found that contact angle for hydrophobic is increased to 150.590 and reduced to 11.580 by heat and argon plasma treatment, respectively, from 75.880 that was initially in the case of hydrophobic surface. XPS analysis confirmed various oxygen-containing functional groups transforming as deposited hydrophobic surface into superhydrophobic and hydrophilic surface. Thus, we have proposed a new, direct, cost-effective, and highly productive method for the synthesis of rGO and GO—with various surface properties—for biological applications. Similarly, for the dental implant application, the Streptococcus mutans was used as an antibacterial effect and found that S. mutans grows slowly on hydrophilic surface. Thus, antibacterial effect was prominent on GO with hydrophilic surface.

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“…Anodic aluminium oxide (AAO) templates with 1 μm of length (see Fig. S2 in the Supporting Information) and pores of 20 ± 2 nm in diameter were obtained by the conventional two-step anodization process 35 , using high purity Alfa Aesar (99.997%) aluminium with 100 μm of thickness. As a previous step to the anodization, the aluminium foil was cleaned using acetone in ultrasonic bath and electropolished with HClO 4 :EtOH in 1: 36 The composite that we have aimed to investigate is formed by a multi-layered GO thick film, decorated with permalloy nanowires (Py NWs).…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, GO is considered as an interesting matrix to create composites for multiple applications, ranging from biomedicine due to its antibacterial response 25 , environmental remediation because it allows removing the arsenic in water 26 , energy storage in supercapacitors as electrode 27 , 28 , metal catalysis as support 29 , to the manufacture of screens 30 , and other flexible devices 31 . Motived by these multiple functionalities, intensive research has been tackled in the last years to develop GO-based composites 32 , 33 , being its use as molecular sensors a trending driven force, since these new materials could afford stability, selectivity 34 , 35 , as well as large surface area that provide anchorage points due to the presence of functional groups on the surface, that further impact on the simple scalability to develop real devices 36 – 38 .…”

Section: Introductionmentioning

confidence: 99%

Permalloy nanowires/graphene oxide composite with enhanced conductive properties

Jaimes

Márquez

Ovalle

et al. 2020

Sci Rep

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carbon-metal-based composites arise as advanced materials in the frontiers with nanotechnology, since the properties inherent to each component are multiplexed into a new material with potential applications. in this work, a novel composite consisting of randomly oriented permalloy nanowires (py nWs) intercalated among the sheets of multi-layered graphene oxide (Go) was performed. py nWs were synthesized by electrodeposition inside mesoporous alumina templates, while Go sheets were separated by means of sonication. Sequential deposition steps of Py NWs and GO flakes allowed to reach a reproducible and stable graphene oxide-based magnetic assembly. Microscopic and spectroscopic results indicate that py nWs are anchored on the surface as well as around the edges of the multi-layered Go, promoted by the presence of chemical groups, while magnetic characterization affords additional support to our hypothesis regarding the parallel orientation of the Py NWs with respect to the GO film, and also hints the parallel stacking of GO sheets with respect to the substrate. the most striking result remains on the electrochemical performance achieved by the composite that evidences an enhanced conductive behaviour compared to a standard electrode. Such effect provides an approach to the development of permalloy nanowires/graphene oxide-based electrodes as attractive candidates for molecular sensing devices. Composite materials arise as versatile candidates that could be designed to satisfy diverse technological applications due to their multifunctional behaviour. Since composites are obtained by combining two or more materials that have different attributes, such assembly provides to the composite of unique properties. In fact, several examples exist that have demonstrated the industrial development behind their production, being the concrete a well-known composite, where its strength under compression is improved by adding metal rods, wires, mesh or cables in order to create reinforced concrete. Most of the current composites have been made by carbon allotropes 1, 2. In particular, when graphene is combined with the metallic copper, a new material around 500 times stronger than copper is achieved 3. Likewise, composites constituted by graphene and nickel yield a strength larger than 180 times of nickel 4. A soft Ni-rich ferromagnet 5, 6 , that is widely employed as a magnetic core material in diverse technological applications, such as magnetic recording heads 7-9 , microinductors and magnetoresistive random access memories (MRAM) 10, 11 , is the so called permalloy (Py), an alloy with about 20% iron and 80% nickel content. On the one hand, bulk Py exhibits large magnetic permeability, enhanced sensitivity in sensing devices 12 , as well as low coercivity and remanence, of interest in magnetic shielding 13. In addition, it is a material with nearly zero magnetostriction, an attribute that promotes an easier integration in different devices 13. Besides, the high Ni content provides an excellent corrosion resistance to the alloy...

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Sonochemical synthesis of iron-graphene oxide/honeycomb-like ZnO ternary nanohybrids for sensitive electrochemical detection of antipsychotic drug chlorpromazine

Cited by 46 publications

References 68 publications

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

<p>Synthesis of Graphene Oxide Using Atmospheric Plasma for Prospective Biological Applications</p>

Permalloy nanowires/graphene oxide composite with enhanced conductive properties

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