【摘 要】
：
Macroporous ZnAl2O4 spinel monolith with a well-defined macropores was successfully prepared using the sol-gel process accompanied by phase separation in the presence of poly (ethylene oxide) (PEO) an
【机 构】
：
School of Materials Science and Engineering of Zhejiang University, Hangzhou P.R.China 310027
【出 处】
：
2016’中国溶胶-凝胶学术研讨会暨国际论坛
论文部分内容阅读
Macroporous ZnAl2O4 spinel monolith with a well-defined macropores was successfully prepared using the sol-gel process accompanied by phase separation in the presence of poly (ethylene oxide) (PEO) and propylene oxide (PO).Propylene oxide (PO) was used as an acid scavenger to mediate the gelation process,while PEO worked as a phase-separation inducer.The as-prepared samples were characterized by means of XRD, TG/DTA, SEM, FTIR, and BET.The mechanism of the epoxide-mediated sol-gel reaction and PEO induced phase separation was also discussed.The results show that the as-prepared monolith possesses an interesting pore structure with co-continuous solid skeletons and well-defined macropores.The dried gel is amorphous, and the ZnAl2O4crystalline phase is obtained after heat treatment at 600℃ in air.Heat-treatment does not basically spoil the macrostructure of the monoliths.
其他文献
Porous crack-free C/SiO2/SiC ternary composite aerogel monolith was prepared by the one-pot sol-gel method using Catechol/formaldehyde (CF) and 3-aminopropyltriethoxysilane as the organic and inorgani
Recently, more and more high power laser have been used in the vacuum environment.The effect of vacuum contamination on the thin film laser damage has gradually become the focus in high power lasers f
In this paper, the laser damage morphology and laser damage threshold of sol-gel thin films were investigated.The laser damage of sol-gel thin film was distinguished in detail.Ring damage, this type o
Graphitic carbon nitride (g-C3N4), known as an metal-free photocatalyst[1], has attracted increasing attention because of its simple preparation and stable photocatalytic activity.Besides, the utiliza
A series of different PVBCz-b-PDMAEMA star block copolymers with different arm numbers and PDMAEMA block lengths were successfully synthesized via atom transfer radical polymerization (ATRP) using the
Using commercial Lower melting point glass powers, Ce∶YAG phosphor powder and acrylic resin as raw materials, Ce∶YAG quartz glass phosphor films for high-power white LED have been successfully prepare
本文采用溶胶-凝胶法，以正硅酸四乙酯为前驱体，氨水为催化剂制备标准SiO2溶胶.在溶胶老化过程中使用硅烷偶联剂KH570对溶胶改性，通过浸渍提拉法在BK7玻璃上镀膜，获得高透过率且耐环境稳定性良好的SiO2减反膜.使用原子力显微镜(AFM)、扫描电子显微镜(SEM)、UV-Vis-NIR分光光度计、傅里叶变换红外光谱仪、接触角测试仪等对薄膜的性能进行表征.结果表明：当KH570与TEOS的摩尔比为
Modified organic silica sol coating was prepared on the surface of zirconium hydride (ZrH1.8) by sol-gel technology using ethyl silicate (TEOS), isopropyl alcohol (IPA) and H2O as raw materials, coupl
Nano hydroxyapatite (n-HA), polyamide 66 (PA66) and chitosan (Cs) are often use as a kind of biomaterials due to their excellent properties, especially in bone repair materials.And Erythromycin (EM) i
The ammonium molydbate(AM) based on zinc hydroxystannate(ZHS) and AM/ZHS was coated by aluminum hydroxide (ATH) with different ratios were successfully prepared via sol-gel technique.The emphasis in t