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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Nanocarrier-Functionalized Magnetite as Nanosorbents for Removal of Heavy Metal Ions in Water

등록일
2014년 8월 28일 16시 55분 48초
접수번호
1330
발표코드
MAT.O-13 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 12시 : 24분
발표형식
구두발표
발표분야
재료화학 - Current Trends in Materials Chemistry
저자 및
공동저자
이지환, 곽승엽*
서울대학교 재료공학부, Korea
Heavy metals are defined as transition metals or metalloids with a density higher than 5.0 gcm-3. Especially, some of heavy metals (e.g., As, Pb, Cu, etc.) are highly toxic even at a low level. It is well known that toxic heavy metals become serious problem threatening human health and ecosystem integrity. Simple and effective methods are presented here to prepare multi-functional adsorbents by introduction of hyperbranched poly(amidoamine) (PAMAM) and positively-modified branched polyethylenimine (p-PEI) onto magnetite (PM-MG and p-MG) for the removal of heavy metal ions in contaminated water. PAMAM and p-PEI are capable of adsorbing the heavy metal cations and anions respectively. The properties of PM-MG and p-MG were characterized via FT-IR, XPS, WXRD, FE-SEM, TEM. Their magnetic properties were also evaluated by VSM. The adsorption capacities of PM-MG and p-MG for Cu(II) and As(V) were measured by ICP-AES. Especially, PM-MG and p-MG have a characteristic of super-paramagnetism resulting in facile removal from water under a relatively low external magnetic field. Therefore, these results suggest that PM-MG and p-MG have a great potential for efficiently separable and reusable adsorbent with high efficiency for removal of heavy metal ions in contaminated water.

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