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Material Sciences 2025
中空TiO2合成及光催化降解罗丹明B性能研究
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Abstract:
利用太阳能等可再生能源已经成为解决环境和能源问题的重要研究方向。本文通过经典的模板法制备中空TiO2，考察其光催化降解罗丹明B (RhB)的活性，并通过SEM、TEM、XRD、UV-Vis等手段分析中空TiO2的形貌与结构、光电化学性能以及光催化降解机理。结果表明，在模拟太阳光照射300 min后，中空TiO2对RhB的降解率高达94.4%，降解动力学常数(k)可达0.0066 min？1，是普通TiO2的9倍。本工作可为光催化降解有机污染物提供新的思路。
The utilization of renewable energy such as solar energy has become an important research direction in solving environmental and energy problems. This paper uses a classic template method to prepare hollow TiO2 and investigate its photocatalytic degradation performance of RhB. The morphology, structure, photo-electrochemical and photocatalytic degradation mechanism of hollow TiO2 is analyzed by means of SEM, TEM, XRD, UV-Vis, etc. These results indicate that after simulating solar irradiation for 300 minutes, the degradation rate of RhB by hollow TiO2 was as high as 94.4%, and the degradation kinetics constant (k) of RhB by hollow TiO2 can reach 0.0066 min-1, which is 9 times higher than that of ordinary TiO2. This work can provide new ideas for photocatalytic degradation of organic pollutants.
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