Browse

Fabrication and Characterization of Nanostructured Materials with High Catalytic Activity
고효율 촉매 활성을 지닌 나노 물질의 합성 및 특성연구

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors
이혜리
Advisor
장두전
Major
자연과학대학 화학부
Issue Date
2016-08
Publisher
서울대학교 대학원
Keywords
Anatase TiO2AnodizationDegradationHollow structureNanoboxNanotube arrayReactive facet
Description
학위논문 (석사)-- 서울대학교 대학원 : 화학부 물리화학전공, 2016. 8. 장두전.
Abstract
In this dissertation, fabrication, characterization, and application of nanostructured material catalysts are discussed from the point of view of physical and materials chemistry. Brief overviews of the chapter 1 and 2 in this dissertation are shown below.
In chapter 1, well-defined uniform anatase TiO2 nanotube arrays with the predominant exposure of the highly energetic {001} facets have been prepared via a two-step anodic oxidation process of Ti foil. With the increase of the first-anodization time (up to 11 h) and/or the NH4F concentration, the exposure degree of the {001} facets, as well as the photocatalytic activity, crystallite sizes, and crystallinity, of prepared TiO2 nanotube arrays has been found to increase. Especially, the photocatalytic activity of TiO2 nanotube arrays increases in accordance with increase in the exposure degree of the {001} facets, suggesting that the highly energetic {001} facets enhance the photocatalytic activity of TiO2 nanotube arrays on a large scale.
In chapter 2, morphology-controlled Ag/Au nanocomposite have been fabricated facilely via a modified galvanic replacement reaction using Ag nanocubes as sacrificial templates. The morphologies of Ag/Au nanaocomposites have been readily controlled by adjusting the temperature of the galvanic reaction. Among the prepared samples, Ag/Au nanocomposites fabricated at 85 oC show the most efficient catalytic performances as their largest nanocavities are surrounded by the most porous walls.
Language
English
URI
http://hdl.handle.net/10371/134944
Files in This Item:
Appears in Collections:
College of Humanities (인문대학)Korean Language and Literature (국어국문학과)Others_국어국문학과
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse