Mesoporous silica was prepared from hydrothermal synthesis using gel mixture of tetraethylorthosilcate (TEOS) as silica source and cetyltrimethylammonium bromide (CTMABr) as a surfactant. In the optimum synthesis cause, molar ratio of template and silica changed. The surface and structure properties of mesoporous silica were determined by XRD, SEM, TEM and BET. Also, surface potential of mesoporous silica was measured using zeta potential. N2 adsorption isotherm characteristics, including the specific surface area (SBET), total pore volume (VT), and average pore diameter (DBJH), were determined by BET. As a result, SBET of 100 m² /g～1500 m² /g was determined from the N2 adsorption isotherm. Also, the average pore diameter was 2 nm∼4 nm. Mesoporous silica's surface potential of minus charge was determined from zeta potential.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. MCM-48의 합성
 3. 결과 및 고찰
  3.1. MCM-48의 특성분석
  3.2. Zeta potential
 4. 결 론
 참 고 문 헌

• 이하영(계명대학교 환경과학과) | Ha Young Lee (Department of environmental Science, Keimyung University)
• 박상원(계명대학교 환경과학과) | Sang Won Park (Department of environmental Science, Keimyung University) Corresponding Author