Abstract We report a novel method to prepare translucent and stable Ag@AgCl/g-C 3 N 4 /TiO 2 ceramic films having strong photocatalytic activities and self-cleaning capabilities under light irradiation. Colloidal silica was used as an inorganic binder and P25 TiO 2 was added as a hydrophilicity enhancer without which a smooth coating was not achievable. Ag@AgCl of particle size around 30 nm, was synthesized by in-situ oxidation of nano-silver particles in porous g-C 3 N 4 /TiO 2 films. Optimal conditions for Ag@AgCl/g-C 3 N 4 /TiO 2 preparation in terms of strongest photocatalysis were established by tests on Rhodamine B degradation under visible and full spectral irradiations. A good adhesion strength of the porous films on glass substrate was achieved. Stability and reusability of the films were assessed by cycling tests. Possible photocatalytic mechanisms are proposed based on the basis of trapping experiments. Systematic characterization of the film suggests that the in-situ oxidation is an effective and practical method to produce nanoscale Ag@AgCl.

中文翻译：

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具有增强光催化性能和自清洁效果的Ag@AgCl/gC 3 N 4 /TiO 2 多孔陶瓷薄膜的制备

摘要 我们报道了一种制备半透明且稳定的Ag@AgCl/gC 3 N 4 /TiO 2 陶瓷薄膜的新方法，该薄膜在光照射下具有很强的光催化活性和自清洁能力。胶体二氧化硅用作无机粘合剂，添加 P25 TiO 2 作为亲水性增强剂，否则无法获得光滑的涂层。通过在多孔 gC 3 N 4 /TiO 2 薄膜中原位氧化纳米银颗粒合成了粒径约为 30 nm 的 Ag@AgCl。Ag@AgCl/gC 3 N 4 /TiO 2 制备在最强光催化方面的最佳条件是通过在可见光和全光谱照射下对罗丹明B降解的测试确定的。实现了多孔膜在玻璃基板上的良好粘合强度。通过循环测试评估薄膜的稳定性和可重复使用性。在捕获实验的基础上提出了可能的光催化机制。薄膜的系统表征表明，原位氧化是生产纳米级 Ag@AgCl 的有效且实用的方法。