Abstract

In the case of wastewater treatment, many researche’s are mainly focused on nanopowder-type photocatalysts that have high efficiency because of their good dispersibility and high specific surface area. Ironically, these properties of nanopowder photocatalysts cause some drawbacks in their recovery from treated water, making practical applications in wastewater treatment difficult. The use of a three dimensional based-ceramic fiber as a substrate and graphitic carbon nitride (g-C₃N₄) as a visible-light-driven photocatalyst can be a promising approach to overcome the above-mentioned limitations. This study describes the immobilization of g-C₃N₄ on ceramic fiber using a facile co-calcination method and verifies its photodegradation activity under visible light. The recovery efficiency, physicochemical stability of samples, and the potential of the practical application of wastewater treatment were tested with organic dye decomposition experiments under visible light irradiation.

摘要

在废水处理方面，由于其良好的分散性和高的比表面积，许多研究者主要集中在具有高效率的纳米粉末型光催化剂上。具有讽刺意味的是，纳米粉体光催化剂的这些特性在从处理过的水中回收中引起一些缺点，从而使得在废水处理中的实际应用变得困难。使用基于三维的陶瓷纤维作为基质，使用石墨化碳氮化物（gC ₃ N ₄）作为可见光驱动的光催化剂，可以克服上述局限性。这项研究描述了gC ₃ N ₄的固定化使用简便的共煅烧方法在陶瓷纤维上进行光催化降解，并验证其在可见光下的光降解活性。在可见光照射下，通过有机染料分解实验，对样品的回收率，理化稳定性和废水处理的实际应用潜力进行了测试。