ZnO를 담지한 zeolite의 제조 및 특성

소개글

석사학위 논문 입니다.

목차

Ⅰ. 서론

Ⅱ. 이론적 배경
1. Zeolite
1.1 Zeolite의 구조
1.2 Zeolite의 특성
2. ZnO
2.1 ZnO의 구조
2.2 양자 크기 효과(Quantum size effect,QSE)

Ⅲ. TMA-A zeolite의 합성 및 결과
1. 실험방법
1.1 TMA-A zeolite의 출발원료 및 조성
1.2 TMA-A zeolite의 합성방법
1.3 분석기기
2. 결과 및 고찰
2.1 주사전자현미경(SEM), X-선 회절분석(XRD)
2.2 Part size, 투과전자현미경(TEM), 비표면적(BET)
2.4 환경주사현미경(ESEM), 열분석기(TGA/DTA), 적외선 분광기(FT-IR)

Ⅳ ZnO를 담지 시킨 TMA-A zeolite의 제조 및 결과
1. 실험방법
1.1 ZnO를 담지 시킨 TMA-A zeolite의 출발원료 및 조성
1.2 ZnO를 담지 시킨 TMA-A zeolite의 제조방법
1.3 분석기기
2. 결과 및 고찰
2.1 주사전자현미경(SEM), X-선 미량분석기(EDX)
2.2 X-선 회절분석(XRD), 투과전자현미경(TEM)
2.3 적외선 분광기(FT-IR), 자외선 분광기(UV)

Ⅴ. 종합결론
1.1 TMA-A zeolite의 합성
1.2 ZnO를 담지 시킨 TMA-A zeolite의 제조

Ⅵ. 참고문헌

본문내용

수열합성법으로 합성 제조한 TMA-A zeolite 내부에 이온교환법을 이용하여 나노사이즈의 ZnO 결정을 성공적으로 담지 하였다. TMA-A zeolite의 최적 합성 조성비로는 Al(i-pro)3 : 2.2 TEOS : 2.4 TMAOH : 0.3 NaOH : 200 H2O 으로 된 용액이었다. ZnO를 담지 시킨 TMA-A zeolite의 합성을 위하여 0.3 g의 TMA-A zeolite 와 5 mol의 ZnCl2 solution을 사용하였다. 각각의 시료를 혼합, 교반, 원심분리, 건조의 과정을 거쳐서 준비한 ZnO를 담지 시킨 TMA-A zeolite precursor를 400~600℃에서 3시간 동안 열처리하였다. ZnO를 담지 시킨 TMA-A zeolite의 결정화 과정 및 결합구조 등은 X-ray diffraction(XRD) 및 fourier transform infrared spectroscopy(FT-IR), 등을 이용하여 분석하였으며, Brunaur-Emett-Teller(BET) 비표면적을 측정하였다. 온도와 시간에 따른 입자의 형상이나 크기 등은 입도분석 및 scanning electron microscopy(SEM)을 통하여 관찰하였다. 담지 된 나노 크기의 ZnO 결정과 TMA-A zeolite 의 결정성을 transmission electron microscopy(TEM) 과 high resolution transmission electron microscopy(HRTEM)으로 평가하였다. 담지 된 ZnO 나노 결정의 크기는 3~5 nm이었으며, 합성된 TMA-A zeolite의 크기는 60~100 nm이었다. FT-IR 분석으로 열처리 전 및 열처리 후 ZnO를 담지 시킨 TMA-A zeolite 결합구조를 확인하였으며, ZnO 및 TMA-A zeolite의 흡수 스펙트럼을 비교 평가하였다. 또한, 자외선분광기(UV spectrophotometer)의 측정에서, ZnO를 담지 한 TMA-A zeolite가 330~260 nm과 260~230 nm 두 파장의 범위에서 형광학적인 특성을 나타내었다.

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