Polystyrene@TiO2 core–shell microsphere colloidal crystals and nonspherical macro-porous materials

Li, Yunfeng; Sun, Zhiqiang; Zhang, Junhu; Zhang, Kai; Wang, Yanfang; Wang, Zhaoyi; Chen, Xiaolu; Zhu, Shoujun; Yang, Bai

doi:10.1016/j.jcis.2008.06.019

Cited by 25 publications

(7 citation statements)

References 38 publications

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“…Thus, obtaining photocatalysts with designed physicochemical properties is one of the keys in the process. There is a recent interest in the design and preparation of porous photocatalysts with enhanced active surface area for water treatments . In general, the properties of porous materials, open and closed porosity, cell size distribution and cell morphology, can be tailored for each specific application, and are influenced by the processing route .…”

Section: Introductionmentioning

confidence: 99%

“…There is a recent interest in the design and preparation of porous photocatalysts with enhanced active surface area for water treatments. 21,22 In general, the properties of porous materials, open and closed porosity, cell size distribution and cell morphology, can be tailored for each specific application, and are influenced by the processing route. 23 Ceramic foams can be prepared by different methods, [24][25][26][27] such as sacrificial templates, 28 replication methods, 29 freeze drying, 30 and direct foaming methods.…”

Section: Introductionmentioning

confidence: 99%

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Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment

et al. 2011

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Titanium dioxide (TiO2) is considered one of the most attractive materials during the last decades due to its scientific and technological importance as photocatalyst. There are many reports dealing with several ways of processing TiO2 powders (coatings, tapes, and bulk sinters) and their photocatalytic characterization. However, very little research effort has been devoted to the preparation of macroporous TiO2 ceramics. This work deals with the colloidal processing of TiO2 powders to fabricate porous materials with tailored open macroporosity by direct foaming through gelcasting with polysaccharides. The obtained samples have been characterized through density, microstructure, porosimetry and photocatalytic studies. The effect of the processing parameters: suspension solid loading (20–65 wt%), viscosity, initial particle size (submicrometer and nano‐sized), tensoactive type (cationic, anionic, and non‐ionic), tensoactive content (0.1–1 wt%), and sintering temperature (1000°C–1400°C) onto the properties of the final samples is reported and discussed. Tailored macroporous samples with open porosity (up to 88 vol%) were obtained and they could be used as multifunctional filters with photocatalytic activity for water treatment under UV irradiation. The photocatalytic activity of the final samples depends on the porosity properties, tensoactive content and grain size.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment

et al. 2011

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“…Polymer colloidal crystals without complete band gaps can still be used as templates to create new structures with complete band gaps [49]. The first step in obtaining inverse opal is to arrange by self-assembly polymer colloidal spheres into periodic arrays ( Figure 9).…”

Section: Templates For Porous-media Applicationsmentioning

confidence: 99%

Optical Properties of the Self-Assembling Polymeric Colloidal Systems

Mocanu

Rusen

Diacon

2013

International Journal of Polymer Science

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In the last decade, optical materials have gained much interest due to the high number of possible applications involving path or intensity control and filtering of light. The continuous emerging technology in the field of electrooptical devices or medical applications allowed the development of new innovative cost effective processes to obtain optical materials suited for future applications such as hybrid/polymeric solar cells, lasers, polymeric optical fibers, and chemo- and biosensing devices. Considering the above, the aim of this review is to present recent studies in the field of photonic crystals involving the use of polymeric materials.

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“…The photocatalytic activity of TiO 2 can be improved by using it as carbon, carbon nanotubes, fullerenes, or graphene composites to enhance the photocatalytic activity as opposed to using TiO 2 alone [20][21][22][23]. It was previously reported that the incorporation of nanoporous poly(styrene-co-divinylbenzene) (PS) during the synthesis of TiO 2 has positive effects on surface morphology [24].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the photocatalytic reaction rate of a nanostructured TiO2 matrix using additional gas phase oxygen

et al. 2013

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Nanostructured TiO 2 was synthesized by the sol-gel method. The titania was supported on nanoporous poly (styrene-co-divinylbenzene) (PS). The samples were characterized by several techniques (scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and ultraviolet-visible spectroscopy). Three types of TiO 2 samples were prepared using various temperatures and were studied for the photocatalytic degradation of methylene blue. The photocatalytic efficiency of TiO 2 was observed to increase by activating the TiO 2 surface using nanoporous PS. The photocatalytic performance of the synthesized samples showed a higher performance using molecular O 2 , which was purged through the reactor.

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Polystyrene@TiO2 core–shell microsphere colloidal crystals and nonspherical macro-porous materials

Cited by 25 publications

References 38 publications

Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment

Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment

Optical Properties of the Self-Assembling Polymeric Colloidal Systems

Tailoring the photocatalytic reaction rate of a nanostructured TiO2 matrix using additional gas phase oxygen

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Polystyrene@TiO2 core–shell microsphere colloidal crystals and nonspherical macro-porous materials

Cited by 25 publications

References 38 publications

Colloidal Processing of Macroporous TiO2 Materials for Photocatalytic Water Treatment

Colloidal Processing of Macroporous TiO2 Materials for Photocatalytic Water Treatment

Optical Properties of the Self-Assembling Polymeric Colloidal Systems

Tailoring the photocatalytic reaction rate of a nanostructured TiO2 matrix using additional gas phase oxygen

Contact Info

Product

Resources

About

Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment

Colloidal Processing of Macroporous TiO₂ Materials for Photocatalytic Water Treatment