g-C 3 N 4 composited TiO 2 nanofibers were prepared by high voltage electrostatic spinning to improve photocatalytic eff
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g-C3N4 composited TiO2 nanofibers were prepared by high voltage electrostatic spinning to improve photocatalytic efficiency Tao Wang1,* Tianyi Sun1 1
, Jiahui Xu1, Zhengmei Zhang1, Haiqin Bian1, Huan Xiao1, and
College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, Gansu Province, China
Received: 14 September 2020
ABSTRACT
Accepted: 13 November 2020
Semiconductor photocatalysis technology is one of the ways to control environmental pollution using solar energy. Because of its chemical stability, low toxicity and high photocatalytic oxidation-reduction ability, titanium dioxide has become one of the most widely studied and applied semiconductor photocatalytic materials. However, there are also some problems such as the response only in the ultraviolet range, rapid recombination of electron pairs produced by light during photodegradation, and the small specific surface area. On account of the limitations of titanium dioxide photocatalyst, the key factors and breakthroughs to improve performance new materials, this paper uses g-C3N4 of improving the photocatalytic function of titanium dioxide. Because g-C3N4 has good conductivity, relatively strong adsorption capacity and larger specific surface area compared with other carriers, g-C3N4 is one of the most promising carriers. In this research work, g-C3N4/TiO2 heterogeneous nanocomposites were prepared by combining TiO2 nanowires with g-C3N4. First of all, we need to change the morphology of titanium dioxide. We use highvoltage electrospinning technology to achieve this goal. This method greatly increases the specific surface area and increases the active sites involved in photocatalytic activity. Then, g-C3N4 was prepared with melamine as raw material by high temperature calcination. Then, the hydrothermal method combined with the good characteristics of g-C3N4 enhanced the deflection of photogenerated electrons and prolongs the lifetime of photogenerated electronhole pairs. The photocatalytic efficiency of nanocomposites is greatly improved Rhodamine B solution was completely degraded in 120 min.
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Springer Science+Business
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https://doi.org/10.1007/s10854-020-04890-7
J Mater Sci: Mater Electron
1 Introduction With the rapid development of economic globalization, the quality of life of residents is further improved, and the demand for fossil fuels is increasing day by day, which leads to the serious consumption of fossil fuels. The pollution problems caused by these problems have a great threat to air health and water health, which has aroused extensive attention from all walks of life. Therefore, environmental pollution has brought human development into a difficult situation. At present, the main methods to control environmental pollution are biological method, physical method and chemical method. Changing pollutants from organic to inorganic in solution is the ultimate goal of these three methods, such as water and carbon di
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