人工晶体学报2018，Vol.47Issue(6)：1113-1118,6.
宽光谱响应CQDs/TiO2复合材料的制备及其光催化活性
Preparation and Photocatalytic Activity of CQDs/TiO2 Composites with Wide Spectral Response
摘要
Abstract
The CQDs/TiO2 composites photocatalysts are prepared by an ultrasonic method.The compositions, structures and optical properties of CQDs/TiO2 composites are detected through XRD, FT-IR, HRTEM and DRS.The results indicate CQDs can successfully attach to the surface of TiO2 and result in a red shift of the absorption edge of catalysts.The photocatalytic activity of the obtained materials with different concentration of CQDs are evaluated by degradation of rhodamine B ( RhB) under simulated sunlight and monochromatic light irradiation.The results show the CQDs/TiO2 composites exhibit excellent ability of photocatalytic activity under simulated sunlight and the activity get to the best when the concentration of CQDs is 1.5 mg/mL.Moreover, it is found the available range of spectrum of CQDs/TiO2 composites are significantly broadened, and the CQDs/TiO2 even showed effective photocatalytic performance under 850 nm light irradiation.The results of PL and transient photocurrent responses indicate the wide spectral response of CQDs/TiO2 composites can be ascribed to the unique up-converted photoluminescence behavior of CQDs.关键词
二氧化钛/碳量子点/光催化/宽光谱响应Key words
TiO2/CQDs/photocatalytic/wide spectral response分类
化学化工引用本文复制引用
张琼,丁光月,王雅文,樊彩梅..宽光谱响应CQDs/TiO2复合材料的制备及其光催化活性[J].人工晶体学报,2018,47(6):1113-1118,6.基金项目
国家自然科学基金(21303116) （21303116）
山西省高等学校优秀青年学术带头人支持计划(154010141-s) （154010141-s）
