有机蒙脱石诱导g-C3N4/TiO2异质结复合机理及材料光催化性能研究

项目名称： 有机蒙脱石诱导g-C3N4/TiO2异质结复合机理及材料光催化性能研究

项目编号： No.51504263

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 孙志明

作者单位： 中国矿业大学（北京）

项目金额： 20万元

中文摘要： 以天然矿物为载体的复合光催化材料，因其高效、节能、环境友好及适用性好，在有机废水处理中具有良好的应用前景。本项目以插层改性后的有机蒙脱石层间域作为微反应区，利用有机改性剂诱导类石墨氮化碳（g-C3N4）与TiO2的前驱体进入层间域，研究结构和性能可控的新型纳米g-C3N4/TiO2异质结/蒙脱石复合光催化材料制备过程中的界面反应机理，揭示复合光催化材料结构特性与可见光光催化性能间的构效关系；研究该材料用于处理含酚和甲基橙废水的应用基础，进而揭示载体对材料光催化性能的促进机制及材料光催化反应机理，并探明材料吸附与光催化降解性能间的协同关系。本项目不仅可为g-C3N4/TiO2异质结/蒙脱石复合光催化材料的构筑及结构与性能调控提供理论依据，而且对于有机废水深度处理具有重要理论意义与参考价值。

中文关键词： 有机蒙脱石；诱导复合；g-C3N4/TiO2；异质结；光催化

英文摘要： Because of its high efficiency, energy saving, environmental friendly property and good applicability, the photocatalytic composite material using natural minerals as the carrier has good application prospect in organic wastewater treatment. In this project, with the organoclays interlayer as the micro reaction area, using organic modifier as the inducing agents of graphite carbon nitride (g-C3N4) and TiO2 precursor, the interface reaction mechanism in the preparation process of the novel nano g-C3N4/TiO2 heterojunction/montmorillonite photocatalytic composite material with controllable structure and performance will be studied in detail. And the relationship between the material structure and the photocatalytic properties will be systematically revealed. In addition, the technological basis of its application in phenol and methyl orange wastewater treatment will be investigated to demonstrate the photocatalytic reaction mechanism and the promotion mechanism of carrier on the material photocatalytic performance, and explore the synergistic relationship between adsorption and photocatalytic degradation. This project not only provides the theoretical basis of the preparation and the structure and property control for g-C3N4/TiO2 heterojunction/montmorillonite composite, but also has important theoretical significance and reference value for the organic wastewater treatment.

英文关键词： organic montmorillonite;induced recombination;g-C3N4/TiO2;heterojunction;photocatalysis