以具有优异光催化性能的TiO₂/g-C₃N₄复合材料为光催化活性组分、硅藻泥为涂料主要成分，将两者物理复合形成具有高效光催化性能的硅藻泥涂料。利用XRD、SEM、PL、BET、FT-IR等表征手段对复合前后的样品进行分析，根据涂料附着力及耐水性等各项国标对涂料的性能进行测试，并以NO为目标物对其光催化活性进行评价。结果表明，相比TiO₂/g-C₃N₄和纯硅藻泥，TiO₂/g-C₃N₄硅藻泥复合光催化剂具有更高的光催化活性，对NO的净化效率提高明显。其中硅藻泥与光催化材料TiO₂/g-C₃N₄质量比为1：1、混合搅拌时间为2 h、烘干温度为60℃时，光催化硅藻泥涂料对NO的净化效率最高可达71%。

A kind of diatom mud coatings with high efficiency photocatalytic properties is physically composed by using TiO₂/g-C₃N₄ composite material with excellent photocatalytic properties as photocatalytic active component and diatom mud as main component.XRD,SEM,PL,BET,FT-IR and other characterization methods are employed to analyze the samples before and after composite.Performance of the coatings is tested according to China's various national standards such as adhesion and water resistance of coatings,and the photocatalytic activity is evaluated with NO as the target substance.Results show that compared with TiO₂/g-C₃N₄ or pure diatom mud,diatom mud/TiO₂/g-C₃N₄ composite photocatalyst shows higher photocatalytic activity and significant higher purification efficiency to NO.The diatom mud/TiO₂/g-C₃N₄ composite photocatalyst exhibits a maximum purification efficiency of 71% for NO when the mass ratio of diatom mud and TiO₂/g-C₃N₄ is 1:1,the mixing process spends 2 h and it has been dried at 60℃.

季雨晴(1996-),女,硕士研究生,研究方向为大气污染控制,jyq0514@126.com