Hydrophobic ZnO-TiO<sub><b>2</b></sub>Nanocomposite with Photocatalytic Promoting Self-Cleaning Surface

Wei, Qiang; Wang, Shaodan; Li, Wei; Yuan, Xiaoxue; Yu, Bin

doi:10.1155/2015/925638

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…Additionally, the variation of the nanorods diameter because of N‐doping content appears to influence also the measured contact angle. In fact, it is well established in the literature that the hydrophobicity of TiO 2 nanorods is caused by hierarchical surface morphology with microscale and nanoscale structures . From the reported experiments, there is a clear evidence that the water contact angle is higher for lower TiO 2 nanorods diameter of about 32 nm corresponding to more pronounced microscale and nanoscale structures and high specific surface.…”

Section: Resultsmentioning

confidence: 67%

“…From the reported experiments, there is a clear evidence that the water contact angle is higher for lower TiO 2 nanorods diameter of about 32 nm corresponding to more pronounced microscale and nanoscale structures and high specific surface. Furthermore, it is well known that the wetting properties of TiO 2 change under UV irradiation . By irradiation with UV light, TiO 2 becomes superhydrophilic and water spread on its surface with a contact angle closer to 0°.…”

Section: Resultsmentioning

confidence: 99%

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Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array

Kongsong

Taleb

Masae

et al. 2018

Surface & Interface Analysis

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Pure titanium dioxide (TiO 2 ) and nitrogen (N)-doped TiO 2 nanorods array were prepared using polished Ti substrates and hydrothermal synthesis method. Prepared nanorods films were characterized by different techniques including X-ray diffractometer (XRD), field-emission scanning electron microscope, Fourier-transform infrared spectroscopy, and XPS. The photocatalytic activities of both prepared films were evaluated by their capacity to degrade methylene blue (MB) in solution, and an attempt to associate it with their surface wetting properties is achieved. The XRD results showed that the prepared TiO 2 is of rutile phase. Furthermore, the 3%N-doped TiO 2 nanorods films show similar high crystallinity and photocatalytic activity compared with prepared films of TiO 2 rutile phase. Additionally, their surface wetting properties were studied and showed hydrophobic behavior with contact angle higher than 120°. The hydrophobicity of 3%N-doped TiO 2 nanorod films is shown to be enhanced because of TiO 2 nanorods diameter decreasing. Additionally, the results clearly show that the prepared 3%N-doped TiO 2 nanorods films exhibit both higher hydrophobicity and the best photocatalytic activity toward the degradation of MB under visible light irradiation.

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Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array

Kongsong

Taleb

Masae

et al. 2018

Surface & Interface Analysis

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“…As shown in Figure S1 (in Supplementary Information) , the maximum absorption wavelength is 543 nm. The degradation rate of the basic fuchsin was calculated as follows [ 26 , 27 ]: η = 1 − A t / A 0 where η is degradation rate, and A 0 and A t are the absorbance before and after the solution was illuminated, respectively.…”

Section: Methodsmentioning

confidence: 99%

Eu-Doped Zeolitic Imidazolate Framework-8 Modified Mixed-Crystal TiO2 for Efficient Removal of Basic Fuchsin from Effluent

Zhang

Liu

et al. 2021

Materials

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Zeolitic imidazolate framework-8 (ZIF-8) was doped with a rare-earth metal, Eu, using a solvent synthesis method evenly on the surface of a mixed-crystal TiO2(Mc-TiO2) structure in order to produce a core–shell structure composite ZIF-8(Eu)@Mc-TiO2 adsorption photocatalyst with good adsorption and photocatalytic properties. The characterisation of ZIF-8(Eu)@Mc-TiO2 was performed via X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller analysis (BET) and ultraviolet–visible light differential reflectance spectroscopy (UV-DRs). The results indicated that Eu-doped ZIF-8 was formed evenly on the Mc-TiO2 surface, a core–shell structure formed and the light-response range was enhanced greatly. The ZIF-8(Eu)@Mc-TiO2 for basic fuchsin was investigated to validate its photocatalytic performance. The effect of the Eu doping amount, basic fuchsin concentration and photocatalyst dosage on the photocatalytic efficiency were investigated. The results revealed that, when 5%-Eu-doped ZIF-8(Eu)@Mc-TiO2 (20 mg) was combined with 30 mg/L basic fuchsin (100 mL) under UV irradiation for 1 h, the photocatalytic efficiency could reach 99%. Further, it exhibited a good recycling performance. Thus, it shows certain advantages in its degradation rate and repeatability compared with previously reported materials. All of these factors suggested that, in an aqueous medium, ZIF-8(Eu)@Mc-TiO2 is an eco-friendly, sustainable and efficient material for the photocatalytic degradation of basic fuchsin.

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“…As mentioned earlier, Zn may exist as ZnO in the structure of Zn-doped TiO 2 . Previous studies have pointed out that ZnO shows superhydrophobicity, which may cause a significant reduction in the wettability of TiO 2 nanotube arrays [42].…”

Section: Wettability Of the Fabricated Nanotube Arraysmentioning

confidence: 99%

Investigation of Effects of Copper, Zinc, and Strontium Doping on Electrochemical Properties of Titania Nanotube Arrays for Neural Interface Applications

et al. 2021

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Direct interaction with the neuronal cells is a prerequisite to deciphering useful information in understanding the underlying causes of diseases and functional abnormalities in the brain. Precisely fabricated nanoelectrodes provide the capability to interact with the brain in its natural habitat without compromising its functional integrity. Yet, challenges exist in terms of the high cost and complexity of fabrication as well as poor control over the chemical composition and geometries at the nanoscale, all imposed by inherent limitations of current micro/nanofabrication techniques. In this work, we report on electrochemical fabrication and optimization of vertically oriented TiO2 nanotube arrays as nanoelectrodes for neural interface application. The effects of zinc, strontium, and copper doping on the structural, electrochemical, and biocompatibility properties of electrochemically anodized TiO2 nanotube arrays were investigated. It was found that doping can alter the geometric features, i.e., the length, diameter, and wall thickness, of the nanotubes. Among pure and doped samples, the 0.02 M copper-doped TiO2 nanotubes exhibited superior electrochemical properties, with the highest specific storage capacitance of 130 F g−1 and the lowest impedance of 0.295 KΩ. In addition, regeneration of Vero cells and neurons was highly promoted on (0.02 M) Cu-doped TiO2 nanotube arrays, with relatively small tube diameters and more hydrophilicity, compared with the other two types of dopants. Our results suggest that in situ doping is a promising method for the optimization of various structural and compositional properties of electrochemically anodized nanotube arrays and improvement of their functionality as a potential nanoelectrode platform for neural interfacing.

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Hydrophobic ZnO-TiO₂Nanocomposite with Photocatalytic Promoting Self-Cleaning Surface

Cited by 13 publications

References 18 publications

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array

Eu-Doped Zeolitic Imidazolate Framework-8 Modified Mixed-Crystal TiO2 for Efficient Removal of Basic Fuchsin from Effluent

Investigation of Effects of Copper, Zinc, and Strontium Doping on Electrochemical Properties of Titania Nanotube Arrays for Neural Interface Applications

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Hydrophobic ZnO-TiO2Nanocomposite with Photocatalytic Promoting Self-Cleaning Surface

Cited by 13 publications

References 18 publications

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO2 nanorods array

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO2 nanorods array

Eu-Doped Zeolitic Imidazolate Framework-8 Modified Mixed-Crystal TiO2 for Efficient Removal of Basic Fuchsin from Effluent

Investigation of Effects of Copper, Zinc, and Strontium Doping on Electrochemical Properties of Titania Nanotube Arrays for Neural Interface Applications

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Product

Resources

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Hydrophobic ZnO-TiO₂Nanocomposite with Photocatalytic Promoting Self-Cleaning Surface

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array

Effect of nitrogen doping on the photocatalytic activity and hydrophobic property of rutile TiO₂ nanorods array