en Research Paper Research Paper Abstract: In this study, carbon nanotubes (CNTs) were grown directly in the pores of micro porous pyrex membranes<br>and consequently ceramic membranes with very fine pores and high porosity were achieved. Our experiment was done<br>in two stages. Initially cobalt powder with different percent was homogeneously mixed with pyrex powder. In order to<br>produce row membranes, each of these mixtures were compacted in the form of tablet by use of a uniaxial cold press<br>and in a stainless steel mould, and then the tablets were sintered at different temperature in an electric furnace. In<br>second stage chemical vapor deposition (CVD) method was used to grow CNTs within the pores of the membranes.<br>Argon and ammonia were used as carrier and reactive gas respectively and acetylene was used as the carbon<br>feedstock. Morphology of the membranes before and after CVD process was studied by scanning electron microscopy<br>(SEM). After CVD process CNTs were grown in the pores of membranes and the pores size was decreased but total<br>porosity of the membrane was not changed considerably. In this way membranes with high porosity and fine pores were<br>fabricated. CNTs, Nano Filter, porous membrane, SEM. 17 22 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3-154&slc_lang=en&sid=1 A. A. Hosseini hos-a-p1@umz.ac.ir 180031947532846001234 180031947532846001234 Yes A. Sadigzadeh 180031947532846001235 180031947532846001235 No S. Mohammadi 180031947532846001236 180031947532846001236 No