嵌碳TiO_2的快速制备及其光催化制氢特性——介绍一个材料综合实验

以TiO_2为代表的半导体光催化剂通过对太阳能的利用,有助于解决当前制约人类社会发展的能源危机与环境污染问题。本实验采用新颖的火焰辅助热解法一步制备出锐钛矿相嵌碳TiO_2微球,该制备方法可避免热处理,实验过程简单快速、无液体废弃物,绿色便捷,利用气相色谱仪测定样品的光催化分解水的产氢量。通过本实验,学生可全面了解半导体光催化剂的光催化原理、制备、表征、功能测试,同时帮助学生认识太阳能、氢能等新能源研究概况,渗透环保的理念。

Fast Preparation of Carbon-lncorporated TiO2 and Its Photocatalytic Hydrogen Evolution Properties:An Introduction of a Comprehensive Materials Experiment

The use of solar energy through titanium dioxide, one of the most promising semiconductor photocatalyst, is a possible solution to energy shortage and environmental pollution. In this paper, anatase carbon-incorporated TiO₂ microspheres are prepared by a facile flame thermal approach, which is annealing-free and almost no waste and simple. The photocatalytic hydrogen yield of the as-prepared TiO₂ sample is tested by gas chromatograph under Xe lamp irradiation. Through this experiment, students can learn photocatalytic mechanism, the synthesis and characterization of semiconductor photocatalyst as well as know a little about solar energy, hydrogen energy and environmental awareness.