399 0

Ag-Multi walled carbon nanotube-TiO2 복합나노소재 제조 및 광감응성

Title
Ag-Multi walled carbon nanotube-TiO2 복합나노소재 제조 및 광감응성
Other Titles
Preparation and Photosensitivity of Ag-Multi Walled Carbon Nanotube-TiO2 Nano Composite
Author
김종오
Keywords
Ag-MWCNT-TiO2 composites; Photocatalysis; Methylene blue; Ag-MWCNT-TiO2 복합체; 광촉매 반응; 메틸렌블루
Issue Date
2016-02
Publisher
한국지반환경공학회
Citation
한국지반환경공학회 논문집, v. 17, NO 2, Page. 5-11
Abstract
다층벽탄소나노튜브(MWCNT)와 titanium(IV) butoxide(TNB) 그리고 silver nitrate(AgNO3)를 이용하여 졸-겔법으로 MWCNT- TiO2 복합체와 Ag-MWCNT-TiO2 복합체를 제조하였다. 복합체에서의 Ag의 분산 및 구조를 주사전자현미경(SEM)과 투과전자현미경(FE-TEM)으로 관찰하였다. X선 회절 분석기(XRD)를 이용하여 복합체의 패턴을 보았을 때 anatase 결정구조를 확인할 수 있었다. 에너지 분광 분석기(EDX)로 원소성분을 분석한 결과 주요 원소인 C, Ti, O 그리고 Ag가 확인되었다. TiO2 입자는 MWCNT에 균일하게 분산되었고, Ag 입자는 튜브 표면에 고정되었다. 또한 UV 조사 시간에 따른 메틸렌블루의 분해를 통하여 광촉매 활성평가를 하였다. Ag-MWCNT-TiO2 복합체는 MWCNT-TiO2 복합체보다 높은 광분해능을 보였다. Ag의 높은 전도성이 MWCNT-TiO2 복합체의 광활성을 향상 시킨다는 결과를 나타냈다. MWCNT−TiO2MWCNT−TiO2 nano composites and Ag−MWCNT−TiO2Ag−MWCNT−TiO2 nano composites were prepared from Multi-Walled Carbon NanoTube (MWCNT), titanium (IV) butoxide (TNB) solution and silver nitrate ( AgNO3AgNO3 ) by the sol-gel method. The dispersion and structure of Ag in the synthesized composites was observed by Scanning Electron Microscopy (SEM) and Field Emission Transmission Electron Microscopy (FE-TEM). X-Ray Diffraction (XRD) patterns of the composites showed that the composites contained an anatase phase. The Energy Dispersive X-ray spectroscopy (EDX) showed the presence of C, O, Ti and Ag peaks. The TiO2TiO2 particles were distributed uniformly in the MWCNT network, and Ag particles were virtually fixed on the surface of the tubes. Also decomposition of the methylene blue was investigated according to UV radiation times for study photocatalytic activity. Ag−MWCNT−TiO2Ag−MWCNT−TiO2 nano composites show high photodegradation than MWCNT−TiO2MWCNT−TiO2 nano composites. The results indicate that the high conductivity of Ag improved the photoactivity of the MWCNT−TiO2MWCNT−TiO2 composite.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=HJHGC7_2016_v17n2_5http://hdl.handle.net/20.500.11754/34142
ISSN
1598-0820
DOI
10.14481/jkges.2016.17.2.5
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE