CAJ | 학술논문

制备Cu掺杂的纳米SnO2/TiO2溶胶,采用旋涂法在载玻片上镀膜,经干燥、煅烧制得Cu掺杂的SnO2/TiO2薄膜,通过对比实验探讨掺杂比例、条件、复合形式等对结构和性能的影响。采用XRD、SEM、EDS、UV-Vis等测试手段对样品进行表征,并以甲基橙为探针考察了其光催化降解性能。 XRD测试结果显示薄膜的晶型为锐钛矿型,结晶度较高。 SEM谱图显示薄膜表面无明显开裂,粒子分布均匀,粒径约为20 nm。 EDS测试结果表明薄膜材料中含有Cu元素,谱形一致。 UV-Vis吸收光谱表明Cu掺杂以及SnO2/TiO2的复合使得在近紫外区的光吸收比纯TiO2明显增强。光催化实验表明Cu掺杂后使得SnO2/TiO2复合薄膜对甲基橙的光催化降解效率进一步提高,SnO2/TiO2复合薄膜的光催化活性在10%Cu掺杂时达到最高。
제비Cu참잡적납미SnO2/TiO2용효,채용선도법재재파편상도막,경간조、단소제득Cu참잡적SnO2/TiO2박막,통과대비실험탐토참잡비례、조건、복합형식등대결구화성능적영향。채용XRD、SEM、EDS、UV-Vis등측시수단대양품진행표정,병이갑기등위탐침고찰료기광최화강해성능。 XRD측시결과현시박막적정형위예태광형,결정도교고。 SEM보도현시박막표면무명현개렬,입자분포균균,립경약위20 nm。 EDS측시결과표명박막재료중함유Cu원소,보형일치。 UV-Vis흡수광보표명Cu참잡이급SnO2/TiO2적복합사득재근자외구적광흡수비순TiO2명현증강。광최화실험표명Cu참잡후사득SnO2/TiO2복합박막대갑기등적광최화강해효솔진일보제고,SnO2/TiO2복합박막적광최화활성재10%Cu참잡시체도최고。
Cu-doped nano-SnO2 TiO2 gelatins were prepared and coated onto glass substrates by spin coating method, followed by drying at low temperature and calcined at high temperature. The films were characterized by XRD, SEM, EDS, and UV-Vis. The photocatalysis degradation efficiency was studied by using methyl orange as probe. XRD patterns show that the films are anatase structure. SEM images show that the surfaces of the films are flat without obvious crack, and the average diam-eter is about 20 nm. EDS results indicate that Cu has been introduced to SnO2/TiO2 films. UV-Vis absorption spectra show that the absorbance of Cu-doped SnO2/TiO2 films at visible region increase comparing to pure TiO2 film. The degradation experiment under UV light shows that the photocataly-sis degradation efficiency of Cu-doped SnO2/TiO2 film is higher than that of pure TiO2 film. The photocatalysis degradation efficiency is the biggest when the doping mole fraction of Cu is 10%.