Abstract—

The slowing down of the group velocity of light at the edges of the photonic band gap is one of the important optical effects observed in photonic crystals. The “slow light” effect is used in photocatalysis to enhance the photocatalytic activity of semiconductors. In this work, anatase photonic crystals with different spectral positions of the photonic band gap (390–1283 nm, measured in water) were obtained. It has been shown that the maximum photocatalytic activity in the photodegradation of methylene blue is exhibited by photonic crystals with the position of one of the photonic band gaps near the intrinsic absorption edge of the semiconductor (410 nm). At the same time, the photocatalytic activity of an anatase photonic crystal increases by 30% when the photonic band gap of the third rather than the first order is located near the absorption edge of the semiconductor.

中文翻译：

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光子带隙位置对阳极氧化钛光子晶体光催化活性的影响

摘要-

光子带隙边缘光群速度的减慢是在光子晶体中观察到的重要光学效应之一。光催化中利用“慢光”效应来增强半导体的光催化活性。在这项工作中，获得了具有不同光子带隙光谱位置（390-1283 nm，在水中测量）的锐钛矿光子晶体。研究表明，当光子带隙之一位于半导体本征吸收边（410 nm）附近时，光子晶体在亚甲基蓝的光降解中表现出最大的光催化活性。同时，当第三级而不是第一级光子带隙位于半导体吸收边附近时，锐钛矿光子晶体的光催化活性提高了30%。