气凝胶（ａｅｒｏｇｅｌｓ）是一种新型的轻质纳米多孔性非晶材料，其孔洞率高达８０～９０％，孔洞的典型尺寸为１～１００ｎｍ．已有文献报道利用ＳｉＯ２气凝胶的纳米网络结构制备出以纳米气凝胶为骨架的纳米材料［１～２］．通过溶胶－凝胶方法制得了Ｅｕ３＋掺杂Ｓｉ... Aerogels are a new class of lightweight, nanoporous, amorphous materials with pores of up to 80-90% porosity and typical pore sizes of 1-100 nm. It has been reported in the literature that nanostructured nano-airgel nanostructured materials have been prepared by using the nano-network structure of SiO2 airgel [1-2]. Prepared by sol-gel method Eu3 + doped Si ...