在无模板或无表面活性剂条件下,利用溶剂热制备片状结构的CaTiO3.探究了水热时间对CaTiO3显微结构和在紫外光下催化降解罗丹明B溶液的光催化活性.分析了CaTiO3光催化剂加入量和不同pH值的罗丹明B溶液对样品光催化性能的影响.通过扫描电镜(FESEM)、X-衍射仪(XRD)、紫外-可见吸收光谱仪(UV-vis)和比表面积分析仪(BET)对样品进行了性能表征.实验结果表明:当水热时间24 h时制备了具有较好光催化性能的CaTiO3片状结构.同时加入0.1g CaTiO3样品降解pH值为9的罗丹明B溶液中,在紫外光的照射下CaTiO3样品光催化降解效果最好,60 min可达到K=0.0526 min-,其降解完后的溶液pH呈现中性,对环境不会造成酸碱污染.
参考文献
[1] | Ahmet Faik Demirors;Arnout Imhof.BaTiO3, SrTiO3, CaTiO3, and Ba_xSr_(1-x)TiO3 Particles: A General Approach for Monodisperse Colloidal Perovskites[J].Chemistry of Materials: A Publication of the American Chemistry Society,200913(13):3002-3007. |
[2] | 董伟霞;赵高凌;包启富;顾幸勇;宋斌;韩高荣.CaTi2O4(OH)2片状结构向CaTiO3片状结构转化及其性能研究[J].人工晶体学报,2014(7):1756-1761. |
[3] | Huang, YJ;Tsai, MC;Chiu, HT;Sheu, HS;Lee, CY.Artificial Synthesis of Platelet-Like Kassite and Its Transformation to CaTiO3[J].Crystal growth & design,20103(3):1221-1225. |
[4] | Yang, X.;Fu, J.;Jin, C.;Chen, J.;Liang, C.;Wu, M.;Zhou, W..Formation mechanism of CaTiO_3 hollow crystals with different microstructures[J].Journal of the American Chemical Society,201040(40):14279-14287. |
[5] | Balek V;Mitamura H;Banba T;Benes M;Malek Z;Beckman IN;Bountseva IM;Haneda H;Mitsuhashi T.Thermal behaviour of perovskite ceramics as a matrix for encapsulation of hazardous elements[J].Journal of thermal analysis and calorimetry,20053(3):649-654. |
[6] | B M PATIL;R S SRINIVASA;S R DHARWADKAR.Synthesis of CaTiO_3 from calcium titanyl oxalate hexahydrate (CTO) as precursor employing microwave heating technique[J].Bulletin of Materials Science,20073(3):225-229. |
[7] | Yang LX;Zhu YJ;Tong H;Liang ZH;Wang WW.Hierarchical beta-Ni(OH)(2) and NiO carnations assembled from nanosheet building blocks[J].Crystal growth & design,200712(12):2716-2719. |
[8] | 韩冲 .固相合成CaTiO3及其光催化性能[D].东北大学,2010. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%