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以Ta2O5和NaOH为起始原料,三聚氰胺(C3N6H6)为氮源采用改进的高温固相法制备了N掺杂NaTaO3(NaTaO3-xNx)光催化剂,并以亚甲基为目标降解物,在紫外光下研究NaTaO3-xNx的光催化活性。实验结果表明:改进固相法能够在700℃下得到结晶度高、粒径大小均一的N掺杂的NaTaO3,且实验过程中不需要二次研磨,提高了NaTaO3-xNx在紫外光下的吸收活性。光催化活性的大小与N的掺入量有关,样品NaTaO2.961N0.039具有较高的光催化活性。而且,NaTaO3-xNx在光降解过程中非常稳定,500℃煅烧后可重复利用,是一种很有前途的光催化剂。
N-doped NaTaO3 (NaTaO3-xNx) photocatalysts were prepared by using Ta2O5 and NaOH as starting materials and melamine (C3N6H6) as nitrogen source by using improved high temperature solid-state method. Methylene was the target degradation product. The photocatalytic activity of NaTaO3-xNx was investigated. The experimental results show that the modified solid phase method can obtain N-doped NaTaO3 with high crystallinity and uniform particle size at 700 ℃, and does not require secondary grinding during the experiment, which improves the absorption of NaTaO3-xNx under ultraviolet light active. The size of photocatalytic activity is related to the amount of N incorporated. The sample NaTaO2.961N0.039 has high photocatalytic activity. Moreover, NaTaO3-xNx is very stable during photodegradation and can be reused after calcination at 500 ° C. It is a promising photocatalyst.