Ce-TiO_2光催化涂料对室内甲醛气体的降解效果及预测模型的准确度  

Evaluation of Degradation Effectiveness of Cerium-Titanium Dioxide Photocatalytic Paint for Indoor Formaldehyde and Establishment of Model for Predicting Degradation Rate

作　　者：王海涛[1] 

机构地区：[1]安徽建筑工业学院环境与能源工程学院,安徽合肥230601

出　　处：《材料保护》2013年第5期17-19,2,共3页Materials Protection

基　　金：国家科技支撑计划课题(2012BAJ08B04)

摘　　要：为了有效降解室内甲醛气体,自制了Ce-TiO2光催化涂料。分析了Ce-TiO2光催化涂料在可见光源下对甲醛气体的降解效果。根据甲醛气体浓度的实测值,采用3次指数平滑法模型建立了Ce-TiO2光催化涂料降解甲醛气体的模型,并对其催化效果进行了预测。结果表明:Ce-TiO2光催化涂料可以提高对可见光源的响应,对甲醛气体的降解效果为82.9%;模型的预测准确性高,平均绝对误差为-0.000 75 mg/m3,平均相对误差为-0.006 80。Ce-TiO2 photocatalytic paint was prepared,and its effectiveness for the degradation of formaldehyde under visible light irradiation was examined. Moreover,cubic exponential smoothing method was adopted to establish the model for predicting the photocatalytic degradation rate of formaldehyde under the catalysis of Ce-TiO2 ,which was conducted while the measured concentration of formaldehyde was taken into account. It was found that Ce-TiO2 photocatalytic paint was able to increase the response of formaldehyde to visible light and presented a formaldehyde degradation rate of 82. 9%. Besides, as-established model could be well adopted to predict the degradation rate of formaldehyde under visible irradiation at a high accuracy,affording an average absolute error of only- 0. 000 75 mg/m 3 and an average relative error of only- 0. 006 80.

关 键 词：光催化涂料 Ce-TiO2 甲醛气体 降解效果 预测模型 指数平滑法 

分 类 号：X511[环境科学与工程—环境工程] O643.32[理学—物理化学]