In-Situ Synthesis and Characterization of Carbon Dots and TiO2 Nanocomposites Anchored on TiO2 Nanotube Arrays

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Li, Fan^1 ; Pan, Yumei^2 ; Liu, Changjun^1 ; Wang, Chunlai^1 ; Yang, Kun^1 ; Tian, Feng^1

Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin

300161, China^1

School of Medical Imaging, Tianjin Medical University, Tianjin

300203, China^2

关键词: Anodic oxidation method;    Excellent photocatalytic activities;    Hybrid nanocomposites;    Solvothermal conditions;    Solvothermal process;    Solvothermal techniques;    Titanium dioxide nanotube array;    Visible-light irradiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012010/pdf
DOI  :  10.1088/1757-899X/301/1/012010

来源: IOP

【 摘 要 】

A modified anodic oxidation method was used to prepare amorphous titanium dioxide nanotube arrays (TiO2NTs) on Ti foil firstly. Then TiO2NTs were decorated with nanocomposites of CDs-TiO2through designed one-step solvothermal techniques in-situ, accompanying with crystallization of TiO2NTs. The crystallinity of TiO2, morphologies and ingredients of the hybrid nanocomposites could be controlled by solvothermal conditions. It was found solvothermal procedure could play a similar role on the TiO2crystal formation like the common anneal treatments. Furthermore, there were more Ti-C bonds found in the composites derived from amorphous TiO2NTs undergone a solvothermal process. The measurements of photo-degradation on both methyl blue and rhodamine B showed an excellent photocatalytic activity for CDs-TiO2decorated TiO2NTs (CDs-TiO2-TiO2NTs) under no matter ultraviolet or visible light irradiation.