Synthesis and structural properties of ZnO and diatomite-supported ZnO nanostructures

Yusan, Sabriye; Bampaiti, A.; Aytaş, Şule; Erenturk, Sema; Aslani, Mahmoud A. A.

doi:10.1016/j.ceramint.2015.09.169

Cited by 27 publications

(12 citation statements)

References 26 publications

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“…The XPS spectra are carried out to further prove the existence of TiO 2 and NiO, and investigate the changes of surface chemical states for ZnO film after introduced TiO 2 and NiO (Figure S8). As shown in Figure 2a, the XPS spectra indicate that Zn 2p has two main peaks with Zn 2p 1/2 (1045.2 eV) and Zn 2p 3/2 (1022.1 eV) with a spin orbit splitting energy difference of 23.1 eV, which mainly exist in the form of Zn 2+ [43,44] . The O 1s spectrum is mainly composed of three peaks located at 531.3 eV, 529.2 eV and 528.8 eV.…”

Section: Resultsmentioning

confidence: 94%

“…As shown in Figure 2a, the XPS spectra indicate that Zn 2p has two main peaks with Zn 2p 1/2 (1045.2 eV) and Zn 2p 3/2 (1022.1 eV) with a spin orbit splitting energy difference of 23.1 eV, which mainly exist in the form of Zn 2 + . [43,44] The O 1s spectrum is mainly composed of three peaks located at 531.3 eV, 529.2 eV and 528.8 eV. The binding energy of 528.8 eV can be attributed to the lattice oxygen (O L , bonded with Zn 2 + ions).…”

Section: Resultsmentioning

confidence: 99%

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Integration of an Electron Transport Layer and a p‐n Heterojunction in a ZnO photoanode for Photoelectrochemical Water Oxidation

et al. 2022

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Zinc oxide (ZnO) has received extensive attention in the field of photoelectrochemical water splitting (PEC-WS). However, ZnO has a narrow absorption range for visible light, easy recombination of photogenerated electrons and holes, and slow kinetics of surface water oxidation, limiting its further practical application. In this work, a FTO/TiO 2 /ZnO/NiO photoanode with a micro-nano structure is built with ZnO as nanosheet clusters, TiO 2 as the electron transport layer, and NiO for forming p-n heterojunction between NiO and ZnO. This photoanode exhibits a photocurrent density of 1.91 mA/cm 2 at 1.23 V RHE , which is three times that of the pure ZnO photoanode (0.65 mA/cm 2 ). The detailed mechanism investigations demonstrate that the introduced TiO 2 can reduce the interface defects between ZnO and FTO, and Ti doping to ZnO improves the conductivity, which simultaneously reduces the bottom surface and bulk charge recombination. The constructed p-n heterojunction further significantly increases the carrier transfer efficiency.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Integration of an Electron Transport Layer and a p‐n Heterojunction in a ZnO photoanode for Photoelectrochemical Water Oxidation

et al. 2022

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“…Figure 1 is a flowchart of ZnO nanopowder synthesis by coprecipitation method based on literature (Yusan, S. et al, 2016).…”

Section: B Methodsmentioning

confidence: 99%

“…et al, 2011) (Zhang, L. et al, 2006), cosmetics (Vaezi, M.R. et al, 2007) ZnO nanomaterials can be synthesized by various chemicals and methods such as coprecipitation (Yusan S. et al, 2016), sol-gel (Yan C. et al, 2006), solvo / hydrothermal (Pan A. et al, 2005), chemical vapor deposition (Wu J-J. et al, 2002) and spray pyrolysis (Ghaffarian H. et al, 2011).…”

Section: A Introductionmentioning

confidence: 99%

Engineering Perspective and Economic Evalution of The Synthesis Zinc Oxide Nanopowder by Co-Precipitation Method

Nandiyanto

Nurahmawati²

2015

JSI

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The purpose of this study is to evaluate the engineering and economic evaluation of the manufacture of zinc oxide (ZnO) Â nanopowder by coprecipitation method. Economic evaluation is carried out with several parameters such as: GPM (Gross Profit Margin), PBP (Payback Period), and CNPV (Cumulative net present value) based on simple mathematical calculations using the Microsoft Excel Application. From the project feasibility test it was found that the project suffer a financial loss if the tax paid was 100% and the selling price was less than 90%. The project can produce as many as 1,1017 tons/year of ZnO nanopowder. ZnO nanopowder production can provide benefits up to 76%. Economic evaluations show positive results because the payback period (PBP) occurs around the 4th year, and profits will continue to increase until the 20th year. Thus, the production of ZnO nanopowder can be considered a lucrative project.

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“…Zinc oxide (ZnO) is used as a heterogeneous catalyst, have a high catalytic activity, nontoxic, insoluble, and also a cheap catalyst [3 -4] which is an important n-type [5][6][7] semiconductor. ZnO is not only a material of particular interest because of its unique optical and electronic properties, but also it has some characteristics that include the following: (a) wide-band gap semiconductor [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], (b) large exaction binding energy of 60 MeV [5-7, 10, 12, 13, 19-20]. The interest in ZnO is as a result of its high abundance and the availability of potentially high quality low cost substrate layers of transparent ZnO films on which electronic processes solar cells and flat panel displays occur [21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Impact of Post- Deposition Heat Treatment on the Morphology and Optical Properties of Zinc Oxide (ZnO) Thin Film Prepared by Spin-Coating Technique

Balogun¹

2017

JPMT

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This research work examines the structural and optical properties of ZnO thin films. Deposition were done by spin coating of solution of Zinc oxide onto pre-cleaned glass substrate at 4000 rpm for 30 sec using spin-coater under ambient condition at room temperature in order to form desired thickness of the film on the substrate. Post-deposition thermal annealing at different range of temperatures from 150°C to 600°C with steps of 50°C was carried out on the samples. The impact of thermal annealing on optical properties of the deposited thin film was investigated using UV-VIS spectrophotometer and scanning Electron Microscope for the morphology. The optical transmittance, reflectance, absorbance were recorded which was used to evaluate the optical band gap of Zinc oxide. Observation shows that band gap energy reduces as annealing temperature is increased from 150°C to 600°C. Observation made on the morphology using SEM model ASPEX 3020 showed that as the temperature increases the surface of the sample roughness increases. It was deduced that as the annealing temperature is increased the surface roughness increases. This may be due to increase in grain size with increase in annealing temperature. The band gap energy decreases as the annealing temperature increases.

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Synthesis and structural properties of ZnO and diatomite-supported ZnO nanostructures

Cited by 27 publications

References 26 publications

Integration of an Electron Transport Layer and a p‐n Heterojunction in a ZnO photoanode for Photoelectrochemical Water Oxidation

Integration of an Electron Transport Layer and a p‐n Heterojunction in a ZnO photoanode for Photoelectrochemical Water Oxidation

Engineering Perspective and Economic Evalution of The Synthesis Zinc Oxide Nanopowder by Co-Precipitation Method

Impact of Post- Deposition Heat Treatment on the Morphology and Optical Properties of Zinc Oxide (ZnO) Thin Film Prepared by Spin-Coating Technique

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