本文采用高温固相法和溶剂热法合成了纳米钙钛矿型复合氟化物KCaF3粉末.通过XRD及TEM分析确定所制备的样品具有钙钛矿的空间构型,平均粒径在100m以下,属于纳米级.以可见光为光源、酸性红3B和KGL蓝为降解对象进行了光催化降解试验,并以染料溶液的脱色率对系列样品的光催化活性进行表征.结果表明:钙钛矿型复合氟化物KCaF3具有较高的光催化活性,不同制备方法所得样品的催化活性不同;表面吸附氧是其光催化活性的重要影响因素.
参考文献
| [1] | G.W. Watson;A. Wall;S.C. Parker .A molecular dynamics simulation of the effect of high pressure on fast-ion conduction in a MgSiO_3-perovskite analogue; KCaF_3[J].Physics of the Earth and Planetary Interiors,1995(1/2):137-144. |
| [2] | Watson G W;Parker S C;Wall A .Molecular dynamics imulation of fluoride perovskites[J].Journal of Physics C:Condensed Matter,1992,4:2097-2108. |
| [3] | Poirier J P;Peyronneau J;Gesland J Y .Viscosity and conductivity of the lower mantle;an experimental study on a MgSiO3 perovskite analogue,KZnF3[J].Physics of the Earth and Planetary Interiors,1983,32:273-287. |
| [4] | 朱国贤,闫景辉,莫凤珊,石春山.纳米KZnF3：Ce3+的制备及其光谱特性[J].分子科学学报,2007(01):39-41. |
| [5] | Takata T;Tanaka A;Hara M et al.Recent progress of photecatalysts for overall water splitting[J].Catalysis Today,1998,44:17-26. |
| [6] | Msehida M;Yabunaka J;Kijima T et al.Electronic structure of layered tantalates photecatalysts,RbLnTa2O7(M=La、Pr、Nd、Sm)[J].International Journal of Inorganic Materials,2001,3:545-550. |
| [7] | 于涛;吴越 .钙钛矿型复合氧化物La1-xSrxFeO3-λ催化性能的研究[J].催化学报,1989,10(03):262-266. |
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