Wang Yizheng, Yu Jiang, Peng Weidong, Tian Jing, Yang Chun
College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.
Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610065, China.
Sci Rep. 2019 Apr 11;9(1):5932. doi: 10.1038/s41598-019-42438-w.
In this paper, we used a facile ball milling, microwave radiation and heating treatment method to achieve the surface modification of TiO with low g-CN concentration, and a multilayer heterojunction composite with TiO as the main part and g-CN as the modification agent was obtained. The obtained materials were analyzed by several characterizations to get information on their chemical composition, crystalline structure, vibrational features and optical properties. The photocatalytic performance was evaluated by degradation of rhodamine B (RhB) and methylene blue (MB) under UV, visible and direct solar light irradiation. Its photocatalytic activity was enhanced depended on the novel structure of g-CN/TiO hybrid and the special Z-scheme electron-hole transfer model of multilayer heterointerfaces. The material preparation and structural features could be useful for the design and development of other photocatalysts with high photocatalytic activity.
在本文中，我们采用简便的球磨、微波辐射和热处理方法实现了低g-CN浓度的TiO表面改性，得到了以TiO为主体、g-CN为改性剂的多层异质结复合材料。通过多种表征手段对所得材料进行分析，以获取其化学组成、晶体结构、振动特征和光学性质等信息。通过在紫外光、可见光和太阳光直射下对罗丹明B（RhB）和亚甲基蓝（MB）的降解来评估其光催化性能。其光催化活性的增强依赖于g-CN/TiO杂化物的新颖结构以及多层异质界面特殊的Z型电子-空穴转移模型。该材料的制备方法和结构特点可能有助于设计和开发其他具有高光催化活性的光催化剂。
