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Your search keyword '"Wang, Shuang"' showing total 30 results
Start Over Author "Wang, Shuang" Publication Year Range Last 50 years Language english Journal chemical engineering journal
30 results on '"Wang, Shuang"'

29. A facile and novel emulsion for efficient and convenient fabrication of durable superhydrophobic materials.

Author

Wu, Yiqiang, Jia, Shanshan, Wang, Shuang, Qing, Yan, Yan, Ning, Wang, Qihang, and Meng, Taotao

Subjects
*SUPERHYDROPHOBIC surfaces, *CONDENSED matter, *EMULSIONS, *TEMPERATURE, *EPOXY resins
Abstract

There are significant challenges related to practical applications of superhydrophobic materials due to their limited durability, difficult processing conditions, and complicated synthesis procedures. In this study, a facile and novel emulsion composed of nanopartilcles (i.e. SiO 2 or TiO 2 ) and epoxy resin was synthesized to produce superhydrophobic surfaces using spraying, dipping and brushing methods, mimicking ordinary household paints. The obtained superhydrophobic materials had a water contact angle (CA) of ∼152° and a sliding angle (SA) of ∼6° at the room temperature. Interestingly, the emulsion demonstrated a great versatility for application in type of materials and application methods. The hierarchical surface structure fabricated by the emulsion was found to be independent of the substrate type and processing method, resulting in similar water repellent performance among all surfaces obtained. The superhydrophobic surfaces also exhibited excellent durability even after sustaining a series of mechanical damages including finger wiping, tape peeling and sandpaper abrasion. Moreover, they were able to maintain their superhydrophobic performance after immersion in aqueous solutions of pH ranging from 1 to 13 and boiling in water at 100 °C. This study shows that the novel emulsion can be used to fabrication of superhydrophobic surfaces using a one-step method that is green, versatile, scalable and independent of operator skill, special equipment, and the type of substrate. It has an excellent promise for real life applications. [ABSTRACT FROM AUTHOR]

Published
2017
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30. Structure and kinetic investigations of surface-stepped CeO2-supported Pd catalysts for low-concentration methane oxidation.

Author

Guo, Tianyu, Du, Jianping, Wu, Jinting, Wang, Shuang, and Li, Jinping

Subjects
*PALLADIUM catalysts, *CERIUM oxides, *CATALYST supports, *MICROSTRUCTURE, *METHANE, *OXIDATION, *CHEMICAL kinetics, *HYDROTHERMAL synthesis
Abstract

Lamellar octahedral ceria (LOC) was synthesized by a facile hydrothermal route. The catalyst properties of Pd-supported on the as-synthesized LOC material for low-concentration methane oxidation and reaction kinetics were also investigated. The structure and morphology of samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen ad/desorption, X-ray photoelectron spectroscopy and hydrogen temperature-programmed reduction techniques. As-synthesized ceria has octahedral morphology and surface-stepped microstructures, and this unique structural CeO 2 exposes (1 1 0) crystal planes superior to general (1 1 1) facet in catalyst. The results show that LOC-supported Pd catalyst exhibits excellent low-temperature activity and stability by optimizing Pd loadings. The properties are further enhanced by introducing guest metal into the LOC material and the advantage of the Zr-modified LOC-supported Pd catalyst was confirmed by kinetic study. The optimum catalyst maintains high low-temperature activity and stability under various gas hourly space velocities, suggesting it has promising application in complete oxidation of low-concentration methane for different flow rates of ventilation air. [ABSTRACT FROM AUTHOR]

Published
2016
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