CAJ | 학술논문

以无机钛盐为原料,采用凝胶-溶胶法,制备二氧化钛纳米溶胶和掺入不同质量分数铜的Cu~(2+)/TiO_2纳米溶胶,对其进行表征.通过对甲基蓝光催化降解,对Cu~(2+)/TiO_2纳米溶胶和TiO_2纳米溶胶的光催化活性进行比较,考察了聚合反应时间、表面活性剂、光照时间和强度、薄膜厚度、掺入铜离子浓度等因素对TiO_2溶胶光催化活性的影响.结果表明,掺铜TiO_2纳米溶胶的光催化活性较高,光催化性能优良,铜掺杂量为0.5%时效果较好.
이무궤태염위원료,채용응효-용효법,제비이양화태납미용효화참입불동질량분수동적Cu~(2+)/TiO_2납미용효,대기진행표정.통과대갑기람광최화강해,대Cu~(2+)/TiO_2납미용효화TiO_2납미용효적광최화활성진행비교,고찰료취합반응시간、표면활성제、광조시간화강도、박막후도、참입동리자농도등인소대TiO_2용효광최화활성적영향.결과표명,참동TiO_2납미용효적광최화활성교고,광최화성능우량,동참잡량위0.5%시효과교호.
Nanometer TiO_2 and Cu~(2+)/TiO_2 composite material was prepared by the sol-gel method. During the process of preparing the antibacterial TiO_2 and Cu~(2+)/TiO_2, with various contents of Ti(SO_4)2 and copper ion, a series of TiO_2 sol and Cu~(2+)/TiO_2 sol were obtained. They were characterized with the laser diffraction particle size analyzer, XRD and TEM. The results show that the size of TiO_2 grains ranges in 3.9～97.9nm, with an effective diameter of 63.6nm and a polydispersity of 0.222. The effective diameter of Cu~(2+)/TiO_2 is 58.4nm, with the polydispersity of 0.237. The TiO_2 was anatase, and the diameter of Cu~(2+)/TiO_2 sol is slightly smaller than that of TiO_2, but the performance against photodegradation may be better than TiO_2 sol. TiO_2 and Cu~(2+)/TiO_2 are compared by the catalytic degradation of methyl blue to see the impact of the polymerize reaction time, surfactant, light source, Cu~(2+)/TiO_2 film and the concentration of copper ion on the photo-catalytic of TiO_2. Our experiments show that Cu~(2+)/TiO_2 sol has better photocatalytic activity than TiO_2 sol, with the optimal concentration of copper ion of 0.5%.