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

초록

MWCNT-TiO2 nano composites and Ag-MWCNT-TiO2 nano composites were prepared from Multi-Walled Carbon NanoTube (MWCNT), titanium (IV) butoxide (TNB) solution and silver nitrate (AgNO3) 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 TiO2 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-TiO2 nano composites show high photodegradation than MWCNT-TiO2 nano composites. The results indicate that the high conductivity of Ag improved the photoactivity of the MWCNT-TiO2 composite.

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