摘要
以硝酸锌和氨水为反应原料,采用无种层低温溶液法制备ZnO纳米阵列,进一步通过硼氢化钠还原法制备缺陷ZnO纳米阵列。通过SEM、XRD、UV-Vis DRS和IR等方法对缺陷ZnO纳米阵列的结构和组成进行分析。探讨硼氢化钠浓度、还原反应温度及时间对缺陷ZnO纳米阵列光降解性能的影响。结果表明,所制备的ZnO纳米阵列紧密排列于不锈钢网表面,具有缺陷的ZnO阵列形貌未发生改变,仍为六边形柱状,直径约(0.5~1)μm。光催化实验表明,在1 M硼氢化钠溶液,还原反应温度50℃,还原反应时间12 h条件下,制备的缺陷ZnO纳米阵列性能最佳,对亚甲基蓝的降解率高达95.9%,相比较纯ZnO降解率提高了44个百分点。另外,缺陷ZnO纳米阵列对氧氟沙星、诺氟沙星及环丙沙星也表现出了较强的降解性能。
ZnO nanoarrays were prepared by seedless layer low temperature solution method using zinc nitrate and ammonia as raw materials.The defective ZnO nanoarrays were further prepared by sodium borohydride reduction method.The structure and composition of the defective ZnO nanoarrays were analyzed by SEM,XRD,UV-Vis DRS and IR.The effects of sodium borohydride concentration,reduction reaction temperature and time on the photodegradation performance of defective ZnO nanoarrays were further discussed.The results show that the prepared ZnO nanoarrays are closely arranged on the surface of the stainless steel mesh,and the morphology of the defective ZnO nanoarrays is still hexagonal columnar,with a diameter of(0.5-1)μm.The photocatalytic experiments show that the performance of defective ZnO nanoarrays prepared in 1 M sodium borohydride solution,reduction reaction temperature 50℃and reduction reaction time 12 h is best,and the degradation efficiency of methylene blue is as high as 95.9%,which is 44 percentage point higher than that of ZnO.In addition,defective ZnO nanoarrays also showed strong degradation performance for ofloxacin,norfloxacin and ciprofloxacin.
作者
田方园
于艳
Tian FangYuan;Yu Yan(Shaanxi Key Laboratory of Comprehensive Utilization of TailingsResources,School of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,Shaanxi,China)
出处
《工业催化》
CAS
2024年第1期41-45,共5页
Industrial Catalysis
基金
陕西省大学生创新创业训练计划项目(S202111396056)
商洛学院博士科研启动项目(21SKY105)
陕西省青年创新团队科研计划项目(23JP040)
商洛学院科学研究资助项目(19FK001)。
关键词
催化剂工程
缺陷结构
ZnO纳米阵列
光催化降解
catalyst engineering
defective structure
ZnO nanoarray
photocatalytic degradation
