缺陷型Cu-Bi共掺杂TiO_(2)光催化剂的制备及其降解四环素的研究

Preparation of defective Cu-Bi co-doped TiO_(2) composite photocatalyst and its degradation of tetracycline

以钛酸四丁酯、硝酸铜、硝酸铋为原料,采用溶胶-凝胶法制备前驱体溶液,经干燥、机械活化(MA)、煅烧处理,制备缺陷型Cu-Bi共掺杂TiO_(2)复合光催化剂,利用XRD、SEM、TEM、XPS、BET、PL等进行表征,在可见光辐照下,对光催化剂降解的盐酸四环素(TC)性能进行了研究。结果表明,在MA处理20 min,铜、铋掺杂量均为1%,用量0.25 g/L的条件下,120 min内TC降解率达96.5%。

The precursor solution was prepared by sol-gel method using tetrabutyl titanate,copper nitrate and bismuth nitrate as raw materials.The defective Cu-Bi co-doped TiO_(2) composite photocatalyst was successfully prepared through drying,mechanical activation(MA)and calcination,the defective Cu-Bi co-doped TiO_(2) composite photocatalyst was characterized by XRD,SEM,TEM,XPS,BET,and PL,and tetracycline hydrochloride(TC)was researched to perform photocatalytic degradation under visible light irradiation.The results showed that 96.5%of TC could be degraded within 120 min under the condition of 1%copper-bismuth doping with dosage of 0.25 g/L after 20 min MA treatment.