摘要
TiO_(2)/graphene composite was synthesized in the vapor environment of isopropanol.In order to improve the properties of composite,N-doped of TiO_(2)/graphene with different N/Ti molar ratio was prepared in the vapor environment of deionized water and used urea as the source of nitrogen.The N-doped occupies in the interstitial sites of TiO_(2) lattice,substitutes for O element in TiO_(2) and for C element in graphene,and simultaneously changes the chemical states of Ti and O elements in TiO_(2).N-doped changes the morphology of TiO_(2) from nano-sheets to nanoparticles,accompanying with the decrease in specific surface area of the composites,first increases the particle size of TiO_(2) and then decreases,and alters the vibration modes of Ti-OTi.The composite with RN/Ti=2 exhibits the enhanced photocatalytic degradation performance to methylene blue,and the degradation rate increases from 7.7×10^(−2) min^(−1) for the undoped composite to 9.6×10^(−2) min^(−1).
作者
唐海龙
王敏
JU Tangtong
DAI Yue
WANG Meiling
MA Yongqing
ZHENG Ganhong
TANG Hailong;WANG Min;JU Tangtong;DAI Yue;WANG Meiling;MA Yongqing;ZHENG Ganhong(School of Materials Science and Engineering,Anhui University,Hefei 230039,China;School of Physics and Optoelectronic Engineering,Anhui University,Hefei 230039,China;Institute of Physical Science and Information Technology,Anhui University,Hefei 230039,China)
基金
Funded by the Natural Science Research Project of Anhui Educational Committee (KJ2021A0062)
the National Natural Science Foundation of China (No. 51471001)
the Open Fund for Discipline Construction,Institute of Physical Science and Information Technology.
