Korean Chemical Engineering Research

  • 제46권3호
  • /
  • Pages.479-485
  • /
  • 2008
  • /
  • 0304-128X(pISSN)
  • /
  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
권호 표지

에어로졸공정에 의한 다공성 TiO2분말의 제조 및 공극특성

Fabrication and Characterization of Porous TiO2 Powder by Aerosol Process

  • 장한권 (한국지질자원연구원 나노물질연구팀) ;
  • 장희동 (한국지질자원연구원 나노물질연구팀) ;
  • 박진호 (서강대학교 화공생명공학과) ;
  • 조국 (한국지질자원연구원 나노물질연구팀) ;
  • 길대섭 (한국지질자원연구원 나노물질연구팀)
  • Chang, Han Kwon (Nano-materials Group, Korea Institute of Geoscience and Mineral Resources) ;
  • Jang, Hee Dong (Nano-materials Group, Korea Institute of Geoscience and Mineral Resources) ;
  • Park, Jin Ho (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Cho, Kuk (Nano-materials Group, Korea Institute of Geoscience and Mineral Resources) ;
  • Kil, Dae Sup (Nano-materials Group, Korea Institute of Geoscience and Mineral Resources)
  • 투고 : 2008.01.02
  • 심사 : 2008.01.18
  • 발행 : 2008.06.30
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초록

Aerosol templating 법을 이용하여 두 종류의 출발물질 용액($TiO_2$ 나노분말/PS 콜로이드 혼합용액 및 TTIP/PS 혼합용액)으로부터 mesopore 및 macropore를 동시에 가지는 다공성 $TiO_2$ 나노구조체 분말을 제조하였다. $TiO_2$에 대한 PS 분말의 혼합비 및 반응기 온도가 다공성 나노구조체 분말의 특성에 미치는 영향을 조사하였다. $TiO_2$ 나노분말을 출발 물질로 사용한 경우, $PS/TiO_2$ 무게 혼합비를 0.79에서 1.31로 증가시킴에 따라 macropore의 증가가 SEM을 통하여 관찰되었으며 비표면적과 mesopore volume은 각각 $31.6m^2/g$에서 $39.1m^2/g$으로, $0.068cm^3/g$에서 $0.89cm^3/g$으로 증가하였다. TTIP 전구체를 사용한 경우, 동일조건에서 제조한 분말의 비표면적 및 mesopore volume이 각각 67% 및 75% 감소하였다.

Porous $TiO_2$ nanostructured particles containing both mesopores and macropores were fabricated by utilizing an aerosol templating method from two kinds of starting materials (colloidal mixture of $TiO_2$ nanoparticles and PS particles, and that of TTIP solution and PS particles). The effects of mixing ratio of PS to $TiO_2$ and reactor temperature on the particle properties were investigated. When $TiO_2$ nanoparticles were used as starting materials, the increase of macropores number was observed by SEM and the specific surface area and total pore volume were increased from $31.6m^2/g$ to $39.1m^2/g$ and $0.068cm^3/g$ to $0.089cm^3/g$, respectively, by increasing the weight mixing ratio of $PS/TiO_2$ from 0.79 to 1.31. When TTIP was used as precursor, the specific surface area and mesopore volume of particles prepared at same condition decreased by 67% and 75%, respectively.

키워드

과제정보

연구 과제번호 : 융복합기술에 의한 광물자원의 지능형 Eco 소재화 기술 개발

연구 과제 주관 기관 : 한국지질자원연구원

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