Photocatalytic efficiency of ZnO plates in degradation of azo dye solutions

Yassitepe, Emre; Yatmaz, H. Cengiz; Öztürk, Cem; Öztürk, Koray; Duran, Cihangir

doi:10.1016/j.jphotochem.2008.02.007

Cited by 119 publications

(60 citation statements)

References 30 publications

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Section: Introductionmentioning

confidence: 99%

“…However, ZnO nanoparticles are prone to aggregate due to the large surface area and high surface energy. In order to improve the dispersion, it is necessary to modify the surface of ZnO nanoparticles [8]- [10] and/or to use coupling agents [5], [6].Recently, much interest in new materials that can demonstrate photocatalytic behavior under the proper illumination conditions for applications in semiconductor industrials and textile industrials [11]. For this reason, nano zinc oxide (nano-ZnO) has attracted great attention as a semiconductor photocatalyst due to its widely used materials, low cost, good stability, and ease of preparation [12].…”

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confidence: 99%

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The Effect of Coupling Agent on the Self-cleaning Ability of Nanowire Zinc Oxide-poly(butylene terephthalate) Fibers

Metanawin¹,

Soonthonpinit²,

Metanawin³

2017

IJMMM

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Abstract-The aim of this research was to study the effect of the coupling agents, HI-LUBE TM and Licowax TM OP on, rheology properties, thermal properties, mechanical properties and self-cleaning properties of PBT-nanowire ZnO composite fibers. Variation of the nanowire ZnO contents in the PBT composite fibers resulted in self-cleaning properties of the fibers. With increase in the amount of nanowire ZnO in PBT composite fibers, the self-cleaning properties of the PBT composite fibers gradually increased. The ZnO/PBT composite fibers in presents of ZnO 5wt% showed the best results of self-cleaning less than 30 hours of the sunlight which the similar results were found less than 54 hours of 20 watts of UV radiation. Both coupling agents were not affected the self-cleaning properties of the fiber. The Melt Flow Index of the Licowax TM OP-series sample (L-series) slightly higher than HI-LUBE TM -series sample (E-series) due to the lubricant additive agent increasing the process ability. SEM micrographs showed the fracture surface of the nanowire ZnO composite fibers at different ratios. The mechanical properties of the ZnO/PBT composite fibers results provide further evident to proof that this composite fibers was able to make textile products. Moreover, the HI-LUBE TM additive was presented the well mixing between nanowire-ZnO and PBT due to HI-LUBE TM is a coupling agent and lubricant while Licowax TM OP is a lubricant. IndexTerms-Nanocomposite, coupling agent, nanowire-zinc oxide, poly(butylene terephthalate), self-cleaning. I. INTRODUCTIONMany attentions have been focused on the polymer-inorganic nanocomposite materials (PINCs). The use of inorganic nanoparticles into the polymer matrix can provide high-performance novel materials that find applications in many fields such as fuel cell, flammability resistance, biomedical, semiconductor, polymer blend compatibilization, textile [1], [2]. However the retention of homogeneous dispersion of nanosize particle in the preparation process of nanocomposites is very difficult because of strong tendency for nanoparticles to agglomerate. To prevent the formation of agglomerated nanoparticles in [6]. It is know that coupling agents such as Silane and polypropylene grafted maleic anhydride are an effective way to improve its dispersibility in polymer matrix as well, and hence ameliorate the polymer matrix, thus enhancing the properties of the resulting composites.Poly(butylene terephthalate) (PBT) is one of the most widely used in automotive, electric, consumer application and textile industry. Beside, PBT also enhances the comprehensive properties of semicrystalline engineering thermoplastic including a high rate of crystallization, good solvent resistance, thermal stability, and excellent processing properties and hence finds its applications in despite its exquisite properties; PBT is very often modified with other polymers and particulate fillers [7].Nano zinc oxide (nano-ZnO) is well-known environmentally friendly and multifunctional inorganic fillers which exhibits l...

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

The Effect of Coupling Agent on the Self-cleaning Ability of Nanowire Zinc Oxide-poly(butylene terephthalate) Fibers

Metanawin¹,

Soonthonpinit²,

Metanawin³

2017

IJMMM

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“…In order to improve the dispersion, it is necessary to modify the surface of ZnO nanoparticles. [8][9][10] The development of designing and modifying of nano-ZnO particles for high protection against UV radiation (both UVA and UVB falls into the regions of the solar spectra of 315-400nm and 280-315nm, respectively)is an objective sought not only by the solar cell industry but also by the textile industrial in the framework of new products classified as technical textiles. Several studies have reported that ZnO coating of cotton textiles could be performed using different pretreatments and techniques such as RF-plasma, MW-plasma, UVirradiation, dip-pad-dry-cure and dip-coating to improve the adhesion of the coating and the life cycle of washings.…”

Section: Introductionmentioning

confidence: 99%

The effect of nano-Zinc oxide on the self-cleaning properties of cotton fabrics for textile application

Panutumrong¹,

Metanawin²,

Metanawin³

et al. 2015

The International Journal of Advanced Culture Technology

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The self-cleaning properties of nano-zinc oxide on cotton fabrics have been investigated. The cotton fabric has been prepared by pad-dry method. The nano-zinc oxide was encapsulated in the polystyrene particle by mini-emulsion process prior used. The loading amount of zinc oxide particles into the mini-emulsion were various from 1% wt to 40%wt. The particles sizes of ZnO-encapsulated polystyrene mini-emulsion were determined using dynamic light scattering. It was showed that the particle size of the mini-emulsion was in the range of 124-205 nm. The topography and morphology of ZnO-encapsulated polystyrene which coated on cotton fabrics was observed using scanning electron microscopy. The crystal structure of ZnO-coated on cotton fabrics was explored by X-ray diffraction spectroscopy. The photocatalytic activities of zinc oxide were present through the self-cleaning properties. The presents of the zinc oxide on cotton fabrics significantly showed the improving of the self-cleaning properties under UV radiation.

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“…These electrons and holes can migrate and initiate redox reactions with water and oxygen, by which they degrade organic molecules absorbed on the surface of a photocatalyst. 6,7 Nano-sized ZnO particles, owing to their large surface area, can be effectively utilized to enhance photocatalytic activity. [8][9][10][11] Unfortunately, in nano-sized particles, agglomeration occurs more readily; the resultant difficulty of their separation and recycling from the reaction system after photocatalysis hinders their application in this field.…”

Section: Introductionmentioning

confidence: 99%

ZnO on Thiolated Graphene Oxide as Efficient Photocatalyst for Degradation of Methylene Blue

Kim¹,

Choi

2013

Bulletin of the Korean Chemical Society

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We present here an efficient and simple method for preparation of highly active heterogeneous ZnO photocatalyst (graphene oxide-zinc oxide: GO-ZnO), specifically by deposition of ZnO nanoparticles onto thiolated GOs. The resultant GO-ZnO sample was characterized by TEM, XRD, Auger, XPS, and Raman measurements, revealing that the size-similar and quasi-spherical ZnO nanoparticles were anchored to the thiolated GO surfaces. The average particle diameter was about 2.5 nm. In the photodegradation of methylene blue (MB) under ultraviolet (UV) light, GO-ZnO exhibited remarkably enhanced photocatalytic efficiency compared with thiolated GO and pure ZnO particles. This strong photocatalytic performance of GO-ZnO can be attributed to the suppression of electron recombination and the enhancement of mass transportation. The results showed that thiolated GO is the preferable supporting material.

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Photocatalytic efficiency of ZnO plates in degradation of azo dye solutions

Cited by 119 publications

References 30 publications

The Effect of Coupling Agent on the Self-cleaning Ability of Nanowire Zinc Oxide-poly(butylene terephthalate) Fibers

The Effect of Coupling Agent on the Self-cleaning Ability of Nanowire Zinc Oxide-poly(butylene terephthalate) Fibers

The effect of nano-Zinc oxide on the self-cleaning properties of cotton fabrics for textile application

ZnO on Thiolated Graphene Oxide as Efficient Photocatalyst for Degradation of Methylene Blue

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