节点文献

MTES疏水改性SiO₂气凝胶修饰活性炭复合材料的制备及结构表征

Preparation and characterization of activated carbon composite materials modified by MTES hydrophobic silica aerogel

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 WU Zhanwu1,2,LIU Yu3,SHEN Xiaodong1, CUI Sheng1,LIU Xueyong3,LIN Benlan1,CHENG Weiwei1(1.College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China; 2.Shanghai Aerospace Propulsion Technology Research Institute,Shanghai 201109,China; 3.Institute of Chemical Materials,CAEP,Mianyang 621900,China)

【机构】南京工业大学材料科学与工程学院；上海航天动力技术研究所；中国工程物理研究院化工材料研究所；

【摘要】采用原位聚合法,以正硅酸四乙酯(TEOS)为原料、甲基三乙氧基硅烷(MTES)为疏水改性剂,活性炭为载体,制备疏水SiO2气凝胶修饰活性炭复合材料。采用接触角分析仪、N2吸附法、傅里叶红外光谱仪(FT-IR)、扫描电子显微镜(SEM)对疏水SiO2气凝胶修饰活性炭复合材料的表面特性和结构进行表征。结果表明:所制备的疏水SiO2气凝胶修饰活性炭复合材料的接触角为156°、比表面积为759.2 m2/g、孔体积为4.38 cm3/g,最可几孔径是32nm,孔径主要分布为1～50 nm,疏水SiO2气凝胶均匀地分散于活性炭表面。更多还原

【Abstract】 The activated carbon(AC) composite materials modified by hydrophobic silica aerogel were prepared by co-precursor method,using tetraethylorthosilicate(TEOS) as precursor,methyltrimethoxysilane(MTES) as modification agent,and activated carbon as carrier.The surface properties and the structure were characterized by contact angel analyzer,pore size analyzer,Fourier transform infrared spectroscopy(FT-IR),and scanning electron microscopy(SEM).Results showed that the contact angel,the specific surface area and the pore volume of the materials were 156°,759.2 m2/g and 4.38 cm3/g,respectively.Most probable pore size was 32 nm with the pore size distribution range of 1-50 nm.The hydrophobic silica aerogel was well coated on the surface of the activated carbon.更多还原