Hierarchical TiO2/ZnO Nanostructure as Novel Non-precious Electrocatalyst for Ethanol Electrooxidation

Tolba, Gehan M.K.; Barakat, Nasser A.M.; Bastaweesy, A.M.; Ashour, Eman A.; Abdelmoez, Wael; El‐Newehy, Mohamed H.; Al‐Deyab, Salem S.; Kim, Hee Young

doi:10.1016/j.jmst.2014.11.006

Cited by 21 publications

(13 citation statements)

References 28 publications

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“…Subsequently, the as-spun nanofiber mats were thermally treated in air at 140 °C for 24 hours to obtain ZnO nanoparticles. ZnO nanorods grown on nanofibers can be obtained by the hydrothermal method [7][8][9]. Figure 3 illustrates the fabrication process of the aligned ZnO nanorods on surface of PVDF/Fe 2 O 3 /Zn(Ac) 2 composite nanofiber membranes.…”

Section: Experiments Designmentioning

confidence: 99%

Geometric potential: An explanation of nanofiber’s wettability

Liu¹,

He²

2018

Therm sci

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Similar to Casimir force, nanofibers have a potential that attracts water molecules, while the porosity of the nanofiber mat produces a repelling force. Wetting property of a nanofiber mat is a result of combination of the forces and gravity. A new concept, the geometric potential or the boundary-induced force, is introduced to elucidate the basic property of wetting. Various nanofiber mats with different fiber morphologies are fabricated by the bubble electrospinning. The paper concludes that superhydrophobic properties of nanofiber mat depends upon mainly fiber morphology and porous structure of the mat, hydrophilic properties of ZnO nanorods will not affect the water contact angle much.

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Section: Experiments Designmentioning

confidence: 99%

Geometric potential: An explanation of nanofiber’s wettability

Liu¹,

He²

2018

Therm sci

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“…Furthermore, many researchers, such as Cheng et al (2016) and Xu et al (2011), who synthesized TiO 2 -ZnO binary oxide systems using a hydrothermal method, have shown that a small addition of ZnO does not affect the observation of the wurtzite structure on the XRD pattern. However, the additional calcination process influences the formation of the structure of zinc titanate (ZnTiO 3 ) (Tolba et al 2015). Raveendra et al (2014) and Chang et al (2004) also reported that the calcination process influences the formation of the ZnTiO 3 structure.…”

Section: Characteristics Of the Synthesized Photocatalystsmentioning

confidence: 99%

Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation

et al. 2019

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A TiO 2 -ZnO binary oxide system (with molar ratio TiO 2 :ZnO = 8:2) was synthesized by a hydrothermal method, assisted by calcination at temperatures of 500, 600 and 700 °C, using zinc citrate as the precursor of ZnO. The morphology (SEM, TEM), crystalline structure (XRD, Raman spectroscopy), diffuse reflectance spectra (DRS), chemical surface composition (EDXRF), porous structure parameters (low-temperature N 2 sorption) and characteristic functional groups (FT-IR) of the TiO 2 -ZnO oxide materials were comprehensively analyzed. The novelty of this work is the observation of the coexistence of the crystalline structures of anatase and ZnTiO 3 in TiO 2 -ZnO oxide materials. Moreover, it is shown that the obtained materials absorb visible radiation. The key stage of the study was the evaluation of the photocatalytic activity of the TiO 2 -ZnO binary oxide systems in the degradation of model organic pollutants: C.I. Basic Red 1, C.I. Basic Violet 10, C.I. Basic Blue 3 and 4-nitrophenol. For all synthesized materials, a high efficiency of degradation of the model organic impurities was demonstrated. The results show that the synthesized products may be materials of interest for use in the degradation of organic pollutants. Moreover, the kinetics of the photocatalytic degradation of selected organic compounds were determined based on the Langmuir-Hinshelwood equation, assuming a pseudo-first-order (PFO) reaction.

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“…As catalyst supports, they are able to stabilize and disperse adequately a number of active phases [163]. Electrospun Pt/SnO 2 NFs were used as the anode electrocatalyst material for PEMFCs [164], which exhibited a high electrochemically-active surface area (81.17 m 2 /g-Pt).…”

Section: Applicationsmentioning

confidence: 99%

Electrospinning of Nanofibers for Energy Applications

et al. 2016

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With global concerns about the shortage of fossil fuels and environmental issues, the development of efficient and clean energy storage devices has been drastically accelerated. Nanofibers are used widely for energy storage devices due to their high surface areas and porosities. Electrospinning is a versatile and efficient fabrication method for nanofibers. In this review, we mainly focus on the application of electrospun nanofibers on energy storage, such as lithium batteries, fuel cells, dye-sensitized solar cells and supercapacitors. The structure and properties of nanofibers are also summarized systematically. The special morphology of nanofibers prepared by electrospinning is significant to the functional materials for energy storage.

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Hierarchical TiO2/ZnO Nanostructure as Novel Non-precious Electrocatalyst for Ethanol Electrooxidation

Cited by 21 publications

References 28 publications

Geometric potential: An explanation of nanofiber’s wettability

Geometric potential: An explanation of nanofiber’s wettability

Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation

Electrospinning of Nanofibers for Energy Applications

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