CAJ | 학술논문

利用单晶Si辅助水热法低温合成了ZnO/CdS/CoFe2 O4复合磁性光催化剂。采用X射线衍射仪、场发射扫描电子显微镜、振动样品磁强计及紫外-可见分光光度计等对产物进行表征。以四环素( TC)、强力霉素( DC)和盐酸土霉素(OTC)3种四环素类抗生素为降解目标,模拟测试样品在日光和紫外光下的光催化性能,并对ZnO/CdS/CoFe2 O4复合磁性光催化剂的重复利用性进行测试。结果表明,圆柱形ZnO尺寸在500 nm,其表面粘附了大量尺寸在100 nm的块状颗粒即为CdS/CoFe2 O4纳米粒子,样品对TC、DC 和 OTC的降解率分别达到了88.50%,75.36%和60.37%,重复使用三个循环,ZnO/CdS/CoFe2 O4对TC的降解率仍保持75%以上。
이용단정Si보조수열법저온합성료ZnO/CdS/CoFe2 O4복합자성광최화제。채용X사선연사의、장발사소묘전자현미경、진동양품자강계급자외-가견분광광도계등대산물진행표정。이사배소( TC)、강력매소( DC)화염산토매소(OTC)3충사배소류항생소위강해목표,모의측시양품재일광화자외광하적광최화성능,병대ZnO/CdS/CoFe2 O4복합자성광최화제적중복이용성진행측시。결과표명,원주형ZnO척촌재500 nm,기표면점부료대량척촌재100 nm적괴상과립즉위CdS/CoFe2 O4납미입자,양품대TC、DC 화 OTC적강해솔분별체도료88.50%,75.36%화60.37%,중복사용삼개순배,ZnO/CdS/CoFe2 O4대TC적강해솔잉보지75%이상。
ZnO/CdS/CoFe2 O4 composite magnetic photocatalysts were synthesized at low temperature by hydrothermal method with assistance of Si ( 100 ) . The synthesized samples were characterized by X-ray diffraction( XRD) ,scanning electron microscopy( SEM) ,vibrating sample magnetometer( VSM) and UV-Vis diffusive reflectance spectroscopy ( DRS ) . The photocatalytic degradation activity on tetracycline ( TC) ,doxycycline ( DC) and oxytetraccline ( OTC) of the samples under the sunlight and ultraciolet irra-diation was evaluated. In addition,the reusability of ZnO/CdS/CoFe2 O4 composite magnetic photocatalyst was tested. The results show that the cylindrical ZnO with the size of 500 nm was coated by a large block CdS/CoFe2 O4 nanoparticles with the diameter of 100 nm. The degradation on TC, DC and OTC of the samples reaches 88. 50%,75. 36% and 60. 37%,and the TC degradability of ZnO/CdS/CoFe2 O4 re-mained above 75% after repeated three cycles.