摘要
水热合成法制备的高度有序多孔ZrO2具有规则六角排列、均匀纳米孔洞(约1.8nm),丰富的表面、界面态及比表面积和强的蓝 (近)紫外光发射,使其较常规体材料有更优异的性质。以稀土离子为探针,研究了Gd3+,Eu3+在这些纳米微孔中的发光行为。结果表明,500℃下,介孔ZrO2与稀土离子相作用并有效地将能量传递给稀土离子,增进稀土离子发光。而在ZrO2:Gd Eu体系中,Gd3+在ZrO2与Eu3+间起桥梁作用,使基质ZrO2→Eu3+的能量传递更为有效。
The mesoporous ZrO2 synthesized by a surfactant templating technique has highly ordered hexagonal pores with 1.8 nanometers in diameter and has strong blue and (near) ultraviolet light emission whose intensity is 100 times higher than that of the bulk samples. Gd3+ and Eu3+ ions were loaded into the porous nanapores as a probe to study the luminescence behavior in these pores. At 500 ℃, the mesoporous ZrO2 host act with the rare earth ions and efficiently transfer its energy to these ions, thus increase their emission intensity. In the ZrO2:GdEu system, Gd3+ ions mediate the energy transfer from ZrO2 to Eu3+ and make it more efficient.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第6期531-534,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金资助课题(19974025)
