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Preparation of sulfur hydrophobized plasmonic photocatalyst towards durable superhydrophobic coating material

Journal of Materials Science & Technology 2020年第6期41卷 159-167页

作者： Emese Lantos LászlóMérai ágota Deák Juan Gómez-Pérez Dániel Sebo?k Imre Dékány Zoltán Kónya LászlóJanovák University of Szeged Interdisciplinary Excellence CentreDepartment of Physical Chemistry and Materials ScienceH-6720Rerrich Béla tér 1SzegedHungary University of Szeged Interdisciplinary Excellence CentreDepartment of Applied and Environmental ChemistryH-6720Rerrich Béla tér 1SzegedHungary

The widely used photocatalytic self-cleaning coating materials are often made of polymers and polymer based composites,where the photocatalyst immobilization occurs with ***,these organic polymers are often unstable under exposure to UV irradiation and easily degraded by reactive radicals produced in the photocatalytic *** order to solve this problem,in this paper,we present the facile preparation of a multifunctional coating with dual superhydrophobic and photocatalytic properties,where the fixation and the hydrophobization of the plasmonic Ag-TiO2 photocatalyst particles with visible light activity was performed with non-water soluble sulfur,which is a cheap and easily available *** resulted novel nanocomposite with rough and nano-tructured surface roughness(1.25–2.45 nm determined by small-angle X-ray scattering)has sufficient low surface energy(3.3 mJ/m2)for superhydrophobic(θ=151.1°v)***,in contrast of the organic and expensive fluoropolymer based composites,this non-wetting nature was durable,because the measured was higher than 150°during the long-term LED(λmax=405 nm)light irradiation.

关键词： Nanocomposite Coating materials Wetting lotus-type structure Visible light photocatalyst

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Evolution of Pore Size Distribution and Mean Pore Size in lotus-type Porous Magnesium Fabricated with Gasar Process

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Journal of Materials Science & Technology 2006年第3期22卷 306-310页

作者： Yuan LIU Yanxiang LI Huawei ZHANG Jiang WAN Key Laboratory for Advanced Materials Processing Technology Tsinistry of Education Department of Mechanical En-gineering Tsinghua University Beijing 100084 China

The effect of gas pressures on the mean pore size, the porosity and the pore size distribution of lotus-type porous magnesium fabricated with Gasar process were investigated. The theoretical analysis and the experimental results all indicate that there exists an optimal ratio of the partial pressures of hydrogen PH2 to argon PAr for producing lotus-type structures with narrower pore size distribution and smaller pore size. The effect of solidification mode on the pore size distribution and pore size was also discussed.

关键词： Porous metal lotus-type structure Gasar process

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