金屬-氧化鈦複合觸媒微結構之控制與改良(1/2)

Abstract

本計畫第一年工作重點包括利用溶膠－凝 膠法（Sol-Gel Method ）來製備奈米二氧化鈦 （U-TiO2 ），並利用Hexamethyldisilazane （HMDS ） 的表面處理（H-TiO2 ）使晶粒成長受限來提升觸媒 的比表面積。另外，以三種不同方式來摻雜Cu 於 二氧化鈦中，分別是氣相反應法（Vapor Phase Reaction ，VPR ）、溶膠中加入銅（Sol+Cu ）與初濕 含浸法（Impregnation ）。對於以上各式二氧化鈦樣 品均完成微結構與吸收光譜分析。

The research work completed in the first year included the synthesis of nanocrystalline TiO2 via a sol-gel process. Surface modification by hexamethyldisilizane has been found to greatly inhibit grain growth upon calcination and to preserve large surface area. In addition, Cu catalyst has been introduced into the TiO2 xerogel by three methods, including vapor phase deposition, gel-doping, and incipient wetness processes. Microstructural and optical characterization of all the above-mentioned samples have been completed.