A facile synthesis method of hierarchically porous NiO nanosheets

Xia, Qixun; Hui, Kwan San; Hui, Kwun Nam; Hwang, Dae‐Youn; Lee, S.K.; Zhou, Wei; Cho, Y.R.; Kwon, Se‐Hun; Wang, Q.M.; Son, Young Guk

doi:10.1016/j.matlet.2011.11.063

Cited by 55 publications

(21 citation statements)

References 13 publications

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“…The crystal structures of NiO material is commonly known as a cubic rock salt structure; the nickel atom is placed in a six fold octahedral coordination as shown in figure 2.5 [96]. The synthesis of NiO NSs has been achieved using several different methods such as evaporation, electrochemical deposition, chemical vapor deposition, sol-gel and hydrothermal growth [97][98][99][100]. The hydrothermal method is the best technique for growing the NiO NSs.…”

Section: Nickel Oxide (Nio)mentioning

confidence: 99%

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Khun¹

2015

Linköping Studies in Science and Technology. Dissertations

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Research on nanomaterials has been revolutionized in the last few years because of the attractive properties they have in comparison to the bulk phase of similar materials. These properties are physical, chemical, catalytic and optical. Among these nanomaterials, the metal oxide nanostructures have become of particular interest to scientists for the development of different optical, biochemical and biomedical nanodevices. In the present research work using the advantageous features of nanotechnology, high performance nanodevices for optoelectronics with a wide band gap compound nanostructure and highly sensitive sensor devices have been demonstrated. The nanotechnology is used to fabricate sensitive and precise nanodevices based on nanomaterials for the application of sensing.Among metal oxide nanostructures, ZnO, CuO and NiO are attractive materials because of their unique properties; their high surface area to volume ratio, their energy band gap of 3.37 eV, 1.2 eV and 3.7 eV, respectively, biocompatibility, high electron mobility, fast electron transfer rate and they are environmental-friendly in many applications. When used in sensor devices, nanomaterials have indicated high selectivity for possible use to detect the various analytes even in small volumes. Metal oxide nanostructures have shown to be good for optoelectronic nanodevices because of their electrical characteristics, high optical absorption and low-processing temperature.In this thesis, the synthesis of different morphologies of metal oxide semiconductor nanostructures and their composite using the hydrothermal method are demonstrated for various applications. This thesis is divided into three parts:In the first part of this research work, the fabrication of well-aligned ZnO nanorods using different concentrations of composite seed layer of inorganic and organic materials when using the hydrothermal growth method is presented. The effect of the composite seed layer on the i Abstract alignment, density and optical properties of the grown ZnO nanorods is investigated (paper I).Utilizing the advantage of ZnO nanostructure, a comparative study of ZnO nanorods and thin films for chemical and biosensing application was carried out. The ZnO nanorods and thin films were functionalized with strontium ionophore membrane, immobilized the galactose oxidase and lactate oxidase for determining the strontium ions, D-galactose and L-lactic acid, respectively (paper II).In the second part, the effects of different urea concentrations on the morphology of CuO nanostructures is studied as described in paper III. Moreover, CuO nanoflowers were functionalized with cadmium ion ionophore for the detection of Cd ions, while CuO nanosheets were grown by the low temperature growth method and were used for the development of a nonenzymatic glucose sensor, respectively (Paper IV).In the last part of this thesis, composite nanostructures of CuO/ZnO and NiO/ZnO were applied to develop dopamine sensor and fast sensitive UV photodetector, respectively. A nanohybrid of C...

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Section: Nickel Oxide (Nio)mentioning

confidence: 99%

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Khun¹

2015

Linköping Studies in Science and Technology. Dissertations

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“…The diffraction peak at (1 1 1) of the NiO film was indexed precisely to a bunsenite structure of NiO, which matched the JCPDS file (no. 4-0835) [23]. The full-width at half-maximum (FWHM) of the (1 1 1) XRD peak was approximately 0.3568, and the grain size was 24.59 nm according to Scherer's formula.…”

Section: Characterizationmentioning

confidence: 99%

High photo-responsivity ZnO UV detectors fabricated by RF reactive sputtering

Zhang

Hui

2013

Materials Research Bulletin

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“…The exceptional chemical stability, optical, catalytic, magnetic and electrical properties of Nickel oxide (NiO) NPs have attracted much attention (Xia et al, 2012). NiO NPs are used in solar cells, lithium-ion batteries, diodes and biosensors (Ates, Demir, Arslan, Camas, & Celik, 2016).…”

Section: Introductionmentioning

confidence: 99%

Repeated oral dose toxicity study of nickel oxide nanoparticles in Wistar rats: a histological and biochemical perspective

Dumala

Mangalampalli

Kamal

et al. 2019

J of Applied Toxicology

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Despite the increasing use of nickel oxide (NiO) nanoparticles (NPs), limited information is available on their toxicological effects. Health consequences of 28 days repeated oral exposure to NiO NPs have not been explored thoroughly. Hence, toxicity investigations were performed after 28‐day daily exposure in albino Wistar rats with NiO NPs following Organization for Economic Co‐operation and Development test guideline 407. Histopathology, biochemical indices including oxidative stress and biodistribution patterns were evaluated to decipher the toxicological impact of NiO NPs. NiO NP characterization by transmission electron microscopy showed an average size of 12.9 (±3.4) nm. Histological studies depicted a prominent impact on the vital organs of the rats. A dose‐dependent rise in both aminotransferase enzyme values was recorded in the homogenates of liver and kidney tissues. A significant decrease in superoxide dismutase activity and increase in catalase activity was noted. Further, a dose‐dependent decrease in reduced glutathione content was recorded in rats, which suggested generation of reactive oxygen species and oxidative stress. Increase in the malondialdehyde levels was observed with an increase in the dose substantiating the antioxidant enzyme activity profiles. Biodistribution studies indicated maximum accumulation of Ni content in liver followed by kidney. Excretion of Ni was predominantly through feces and a little through renal clearance. Our study indicated that NiO NPs adversely alter the biochemical profile of the rats and cause histological damage. Further investigations are warranted to address the mechanism by which physiological path these NiO NPs exhibit their toxic nature in in vivo.

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A facile synthesis method of hierarchically porous NiO nanosheets

Cited by 55 publications

References 13 publications

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

High photo-responsivity ZnO UV detectors fabricated by RF reactive sputtering

Repeated oral dose toxicity study of nickel oxide nanoparticles in Wistar rats: a histological and biochemical perspective

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