Wei W.,Beijing Union University |
Li N.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
Qin G.,Beihang University
Advanced Materials Research | Year: 2012
Ultrafiltration carbon membrane is an important kind of environmental materials for removal of particular and macromolecular pollutants. The mesoporous carbon membranes were synthesized via sol-gel synthesis followed by supercritical drying and carbonization. The formaldehyde and resorcinol were used as original precursor. The membrane was analyzed using nitrogen adsorption. It was found that the carbon membrane was mesoporous material. The pure gases of H2, N2 and CO2 were used to characterize the selective and integrity of the carbon membrane. The gas permeance through the mesoporous carbon membrane is predominantly governed by the Knudsen mechanism. The pure water is 13.4 L·m-2·h-1 and the molecular weight cut-off is about 2000. © (2012) Trans Tech Publications.
Xu J.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
Xu J.,Petrochina |
Shuai Y.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
Zhou L.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
And 4 more authors.
Science China Chemistry | Year: 2012
Self-assembly is the fundamental principle, which can occur spontaneously in nature. Through billions of years of evolution, nature has learned what is optimal. The optimized biological solution provides some inspiration for scientists and engineers. In the past decade, under the multi-disciplinary collaboration, bio-inspired special wetting surfaces have attracted much attention for both fundamental research and practical applications. In this review, we focus on recent research progress in bio-inspired special wetting surfaces via self-assembly, such as low adhesive superhydrophobic surfaces, high adhesive superhydrophobic surfaces, superamphiphobic surfaces, and stimuli-responsive surfaces. The challenges and perspectives of this research field in the future are also briefly addressed. © Science China Press and Springer-Verlag Berlin Heidelberg 2012.
Huang C.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
Wang M.,Key Laboratory of Bio Inspired Smart Interfacial Science and Technology of Ministry of Education |
Han W.,CAS Institute of Chemistry |
Qiu W.,CAS Institute of Chemistry |
Zhao T.,CAS Institute of Chemistry
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | Year: 2015
A liquid ZrC-SiC ceramic precursor was prepared with polyzirconoxanesal as a zirconium source, ethynylpolysilane as a silicon source and benzoxazine as a carbon source. The liquid ZrC-SiC ceramic precursor has a processing capability of precursor infiltration and pyrolysis technique in ceramic composites fabrication. The thermal cure is realized via the catalytic polymerization of ethynyl groups, the ring opening polymerization of benzoxazine rings and the condensation of zirconate with phenolic hydroxyl and Si-H at 200-350℃. For the optimized formula, the yields of monolithic ceramics formed on pyrolysis under N2 atmosphere at 1 000, 1 200, 1 400 and 1 600℃ are 64%, 62%, 62% and 37%, respectively. The ceramic sample at 1 600℃ changes from compact to porous due to the carbothermal reduction, and the pure and element uniformly distributed ZrC-SiC ceramic is obtained. The liquid ZrC-SiC ceramic precursor is a promising candidate as a low-cost precursor of ultrahigh-temperature ceramics for the possible applications of ultrahigh oxidation resistant composite materials. ©, 2015, Chinese Ceramic Society. All right reserved.