采用Zn(Ac)2/聚乙二醇600(PEG600)/H2O三元混合溶液作为前驱物,通过100～200℃温度范围内的两阶段加热使Zn(Ac)2水解,再经过高温煅烧使ZnO晶种在SiO2孔壁上形成.以锌氨络合物为锌源,在90℃下热分解后生成的Zn(OH)2沉积在孔道中,并在100℃下利用水热合成原位制备ZnO纳米线,通过改变三元前驱物组分用量以调节ZnO晶种的尺寸与分布,进而控制纳米线的形貌,最终获得了直径为15～20 nm的ZnO纳米线,其以无规线团形貌均匀填充于三维孔道中.XRD和拉曼光谱表明纳米线为六方纤锌矿型ZnO晶体.考察了ZnO纳米线/大孔SiO2复合物对猪胰脂肪酶的吸附性能,实验测得复合物的吸附量是单纯大孔 SiO2材料的5～6倍,其最大固定量为286.8 mg·g-1,最高酶活为425.5 U·g-1,被固定的酶蛋白在缓冲溶液中经过48 h浸泡不易脱落,且活性保持稳定.
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