Synthesis, Characterization and Photocatalytic Activity of La₂O₃-N/TiO₂ for Methylene Blue Removal under UV Irradiation

Abstract:

In this work, the novel Ti-based composite material has been synthesized, characterized and studied for the photocatalytic degradation of methylene blue(MB). The effects of the doping amount of La and N, calcination temperature and time, light intensity were studied in detail. The strong synergism of La, N and TiO₂ was discussed during the photocatalytic process. The results suggested that the degradation efficiency was obviously improved by the Ti-based photocatalyst and the La element could enhance the photocatalytic degradation performance significantly, and the best molar ratio of N and TiO₂ was 0.000014:1. The study found that the best preparation conditions can also improve the photocatalytic activity, the optimal material was made after calcining for 4h at 800°C. What is more, the higher illumination power was benifit for the degradation of the MB. It is indicated that the mixed crystal Ti-based composite material being an effective adsorbent for the elimination of the contaminated water by dyes. In addition, the work provide new direction for future research.

• Periodical: Applied Mechanics and Materials (Volume 863)
• Pages: 53-58
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.863.53
• Online since: February 2017
• Authors: Jing Li Gao, Ying Hui Han*, Yu Juan Li, Xiao Hong Zhang
• Keywords: Methylene Blue, Photocatalytic Activity, Ti-Based Composite Material

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