催化发光传感器纳米薄膜制备条件的优化

摘要

本研究用溶胶-凝胶法制备MgO和In2O3纳米薄膜材料前躯体，用浸渍镀膜法制备纳米薄膜．讨论了MgO和In2O3薄膜在不同的胶体制备pH值、煅烧温度和镀膜层数下，对一些有机气体的催化发光信号强度的影响．通过实验数据分析得出，MgO纳米薄膜在胶体制备pH为8、镀膜层数为5层、煅烧温度为550℃的条件下对乙二醇甲醚等蒸气具有最佳的催化发光信号．In2O3纳米薄膜在胶体制备pH为5、镀膜层数为5层、煅烧温度为550℃的条件下，对乙酸等蒸气具有最佳的催化发光信号．%Nano-thin films precursors of MgO and In2O3 were synthesized by sol-gel method and thin films were prepared by dip coating method. The influence of eataluminescence (CTL) signals of some organic gases on MgO thin film and In:O3 thin film with the preparing condition of colloid solution pH, calcination temperature and film layers were discussed. From the experimental data analysis, we can conclude that for detecting ethylene glycol methyl ether vapor, MgO thin film has the optimum CTL signal, under the condition as follows: the colloid solution of pH = 8, calcinations temperature of 550 ℃, coating film of 5 layers. For detection of acetic acid vapor, In2O3thin film has the optimum CTL signal, under the condition as follows: the colloid solution of pH = 5, calcinations temperature of 550 ℃, coating film of 5 layers.