CAJ | 학술논문

在常温下,以钛酸四丁酯为前躯体溶解于无水乙醇中,采用溶胶-凝胶法制备了稀土金属-过渡金属共掺杂纳米TiO_2光催化剂.利用X射线衍射仪(XRD)、红外光谱(IR)、紫外光谱(UV)等手段对样品的结构进行了表征,所合成的样品为TiO_2锐钛矿晶相.同时,光催化降解甲基橙实验结果表明:共掺杂TiO_2有较高的催化活性,这是由于共掺杂在TiO_2的价带和导带之间形成了新的能级,从而窄化TiO_2的带宽,能吸收更多的太阳光.
재상온하,이태산사정지위전구체용해우무수을순중,채용용효-응효법제비료희토금속-과도금속공참잡납미TiO_2광최화제.이용X사선연사의(XRD)、홍외광보(IR)、자외광보(UV)등수단대양품적결구진행료표정,소합성적양품위TiO_2예태광정상.동시,광최화강해갑기등실험결과표명:공참잡TiO_2유교고적최화활성,저시유우공참잡재TiO_2적개대화도대지간형성료신적능급,종이착화TiO_2적대관,능흡수경다적태양광.
Rear earth (RE) and transition-metal co-doped TiO_2 Nanopartieles were successfully synthesized using tetrabutyl titanate as a precursor in ethanol solution by a sol-gel method at room temperature The crystalline phase and optical property of these obtained co-doped TiO_2 nanoparticles was characterized by XRD, UV, IR, indicating that anatase TiO_2 nanopartieles were prepared in high yield. Further, photocatalytical performance was examined through catalytical degradation of methyl orange. The photoeatalytical results showed that the co-doped TiO_2 nanoparticles displayed high photocatalytical activity in comparison with pure TiO_2 because of the presence of shadow energy between the valence band and conductor band.