基于正交实验设计制备Cu-Ce/TiO_2的多元非线性回归分析

Multivariate nonlinear regression analysis for preparation of Cu-Ce/TiO_2 based on orthogonal experimental design

采用过渡金属Cu和稀土金属Ce对TiO2进行改性。运用正交实验设计TiO2的改性方案。以Cu-Ce掺杂负载量、Cu-Ce摩尔比和烧结温度为正交实验设计因子,以光催化甲醛溶液的降解效率为目标因子,编制正交设计表。同时运用多元非线性回归模型,建立多元非线性拟合数学关系方程。结果表明,将正交实验设计方法与多元非线性回归模型相结合,不仅可以弥补正交实验设计的不足,提高实验设计的可靠性,而且实现对各实验各影响因素由定性分析向定量分析转变,有利于高性能纳米光催化材料的制备与性能分析。

TiO2 was modified with transition metal Cu and rare earth metal Ce by orthogonal experimental design,where Cu-Ce doping loading,Cu-Ce molar ratio and sintering temperature were picked up as orthogonal experimental design factors and the degradation rate of photocatalytic formaldehyde solution was the target factor to establish an orthogonal design table.Besides,a multiple nonlinear fitted mathematical relationship was established by multivariate nonlinear regression model.Results showed that the combination of orthogonal experiment design method and multivariate nonlinear regression model can make up for the deficiency of orthogonal experimental design and improve its reliability,and turn the qualitative analysis of the impact of various factors into quantitative analysis,which more favorable to prepare and analyze high performance of nanometer photocatalytic materials.