Ever since the pioneering research of Morse and co-workers illustrating the use of Silicatein (a protein derived from marine sponge) in the in vitro synthesis of Titania1, there has been an increasing interest in methods that mimic bio-mineralization due to their advantage in producing inorganics at ambient conditions.TiO2 is commonly used as photo-catalyst due to its non-toxicity, chemical stability, cheapness, and its high efficiency. However, owing to its relatively large band gap (~3.2 eV) its use is limited to the UV light region. By coupling the two metal oxide semiconductors TiO2 and WO3, the reduction of band gap energy can be achieved, which will allow the hybrid to be used in the visible light region.Previously in our group we identified STB1 (-CHKKPSKSC-), a constrained hepta-peptide cognitive of TiO2 through a phage surface display technique,2 and then fused this peptide to the C-terminus of a DNA binding protein LacI to form a designer protein LacI-STB1 which was then subjected to binding tests. Results showed that it has a high affinity for TiO2 nanoparticles.3 In the present study; we used this engineered designer protein to induce the formation of TiO2-WO3 hybrid metal oxide nano-particles. The synthesized hybrid nano-particles were subsequently quantified and characterized by Scanning Electron Microscope (SEM) and EDS. Compared to using peptides, this research presents a cheaper method for the bio-mimetic synthesis of hybrid metal oxides.
키워드
Bio-mimetic synthesisDesigner proteinHybrid metal oxide nano particlesPhoto catalysis
저자
John MWALE [ Department of Chemical Engineering, Sungkyunkwan University, SKKU Advanced Institute of Nanotechnology,Suwon 440-746, Korea. ]
Noo-ri CHOE [ Department of Chemical Engineering, Sungkyunkwan University, SKKU Advanced Institute of Nanotechnology,Suwon 440-746, Korea. ]
Woo-Seok CHOE [ Department of Chemical Engineering, Sungkyunkwan University, SKKU Advanced Institute of Nanotechnology,Suwon 440-746, Korea. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동
간행물
간행물명
한국생물공학회 학술대회
간기
반년간
수록기간
1985~2013
십진분류
KDC 476DDC 576
이 권호 내 다른 논문 / 한국생물공학회 학술대회 2011년도 한국생물공학회 춘계학술발표대회