S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Theses (Master's Degree_화학생물공학부)
Synthesis of nanorattles composed of gold nanoparticles encapsulated in mesoporous carbon and polymer
- Issue Date
- 서울대학교 대학원
- Thesis (master`s)--서울대학교 대학원 :응용화학부,2003.
- In this research, two kinds of new spherical silica templates were fabricated. A
new silica template has sub-micrometer sized solid core and mesoporous shell
(SCMS) structure. The other has nanorattle structure, that is solid core containing
an encapsulated Au nanoparticle surrounded by a mesoporous shell structure
(Au@SCMS). Hollow spherical carbon and polymer capsules, containing an
encapsulated Au nanoparticle or without encapsulated Au nanoparticle, were
synthesized using these silica templates. A role of template is important to obtain a
particular morphology and pore structure. The resulting carbon capsules inversely
replicated the structure of the silica template and contained uniform pores with a
narrow pore size distribution. These carbon capsules exhibited a BET surface area
of >1000 m2 g-1 and a total pore volume of >1.0 cm3 g-1. In addition, hollow
polymer capsules having a well-defined pore size were fabricated using a similar
synthetic procedure. These polymer capsules exhibited a BET surface area of >
450 m2 g-1 and a total pore volume of > 0.45 cm3 g-1. The diameter of the hollow
core and the mesoporous shell thickness of the capsules could easily be controlled
using appropriate silica materials as templates.
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