Ultra-small bimetallic nanoparticles-stabilized conductive metal-organic frameworks for superior chemiresistors이종금속 나노입자 촉매가 결착된 전도성 금속 유기 구조체를 활용한 저항변화식 가스 센서에 관한 연구

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Conductive metal-organic frameworks (cMOFs) have emerged as a new class of chemiresistor materials with high porosity, high surface area, and high electrical conductivity at room temperature. Nevertheless, their insufficient surface reactivity is an unmet challenge to achieve highly sensitive chemiresistors. In this thesis, we enhanced the activity of cMOF using encapsulation of bimetallic NP in well-defined pores of cMOF. Two metal precursors (K2PtCl4 and RuCl3) are guided into pores of MOFs via dipolar interaction and undergo the site-specific nucleation, resulting in well-dispersed and ultra-small (c.a. 1.54 nm) bimetallic PtRu NPs. The bimetallic-NPs encapsulated MOF shows great enhancement in chemiresistive response toward NO2, which is attributed to the synergistic effect between Pt and Ru in encapsulated NPs. This approach suggests the facile synthetic method to combine conductive porous materials and highly active multi-metallic NPs.
Advisors
Kim, Il-Dooresearcher김일두researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2021
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2021.2,[iv, 30 p. :]

Keywords

Gas sensors▼ametal-organic frameworks▼aconductive▼ananoparticles▼abimetallic; 가스 센서▼a금속-유기 구조체▼a전도성▼a나노 입자▼a이종금속

URI
http://hdl.handle.net/10203/295432
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=957335&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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