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A novel method for synthesis of -Si3N4 nanowires by sol–gel route
sol–gel nanowires -Si3N4
2008/3/13
Silicon nitride (Si3N4) nanowires have been prepared by carbothermal reduction followed
by the nitridation (CTRN) of silica gel containing ultrafine excess carbon obtained by the
decomposition of de...
络合作用对Sol-gel法制备Er3+掺杂TiO2粉末光致发光特性影响
2007/12/12
摘要 以钛酸正丁酯为前驱体, 乙酰丙酮为络合剂, 分别在室温和70°C进行对前驱体改性的络合反应, 获得改性前驱体Ti(O-Bu)4-x(AcAc)x. 以异丙醇为溶剂, 采用溶胶-凝胶(sol-gel)法制备0.1~3.0mol% Er 3+掺杂TiO2粉末. 差热-热重(TG-DTA)分析结果表明, 由室温络合改性前驱体制备的粉末, 无定型到锐钛矿和锐钛矿到金红石的相变温度, 较由70°C络合...