阅读说明：本技术 一种具有光催化性能的新型多孔g-C3N4的制备方法与应用 (Preparation method and application of novel porous g-C3N4 with photocatalytic performance ) 是由 陈哲 刘飞 陈�峰 刘风磊 张宏庆 于 2021-07-23 设计创作，主要内容包括：本发明适用于光催化技术领域,提供了具有光催化性能的多孔g-C3N4催化剂及其制备方法和应用。具有光催化性能的多孔g-C3N4催化剂的制备方法,包括以下步骤：将尿素、L-谷氨酰胺,缓缓加入去离子水中,经超声处理使用液氮将其迅速冷冻,在真空干燥机中进行冷冻干燥,之后置于马弗炉中进行煅烧处理,最后进行洗涤、离心、干燥处理得到具有光催化性能的多孔g-C3N4催化剂。本发明的多孔g-C3N4催化剂具有结构稳定、分散性强、孔状密集、吸附能力强的特点,有利于电子的顺利传输；本发明的制备方法简单、成本低廉,所制备的多孔g-C3N4催化剂在可见光照下,具备优异的光催化分解水产氢的性能,产氢性能高达625μmolg-1h-1,还能够有效降解盐酸四环素(TCH)、左氧氟沙星(LEV)等抗生素。(The invention is applicable to the technical field of photocatalysis, and provides a porous g-C3N4 catalyst with photocatalytic performance, and a preparation method and application thereof. The preparation method of the porous g-C3N4 catalyst with photocatalytic performance comprises the following steps: slowly adding urea and L-glutamine into deionized water, carrying out ultrasonic treatment, rapidly freezing by using liquid nitrogen, carrying out freeze drying in a vacuum drying machine, then placing in a muffle furnace for calcination treatment, and finally carrying out washing, centrifugation and drying treatment to obtain the porous g-C3N4 catalyst with photocatalytic performance. The porous g-C3N4 catalyst has the characteristics of stable structure, strong dispersibility, dense pore shape and strong adsorption capacity, and is favorable for smooth transmission of electrons; the preparation method is simple and low in cost, and the prepared porous g-C3N4 catalyst has excellent performance of photocatalytic water decomposition hydrogen production under visible light, the hydrogen production performance is up to 625 mu molg-1h-1, and antibiotics such as tetracycline hydrochloride (TCH), Levofloxacin (LEV) and the like can be effectively degraded.)