CAJ | 학술논문

采用模板辅助溶剂热法制备TiO2多级结构纳米纤维材料，用X射线衍射（XRD）、扫描电镜（SEM ）、透射电镜（TEM ）等技术对其结构、形貌进行了表征．以亚甲基蓝（MB）溶液的降解脱色为模型反应，考察了前驱液 Ti4＋／EtOH的p H值（1.98～11.67）对材料光催化性能的影响．结果表明，前驱液p H值不仅影响材料的结构、形貌，而且影响材料表面的荷电性质和光吸收性能，最终影响材料的光催化性能．在较高pH值下所得材料具有的良好光催化性能主要与材料的多级结构、表面负电性质有关．
채용모판보조용제열법제비TiO2다급결구납미섬유재료，용X사선연사（XRD）、소묘전경（SEM ）、투사전경（TEM ）등기술대기결구、형모진행료표정．이아갑기람（MB）용액적강해탈색위모형반응，고찰료전구액 Ti4＋／EtOH적p H치（1.98～11.67）대재료광최화성능적영향．결과표명，전구액p H치불부영향재료적결구、형모，이차영향재료표면적하전성질화광흡수성능，최종영향재료적광최화성능．재교고pH치하소득재료구유적량호광최화성능주요여재료적다급결구、표면부전성질유관．
TiO2 multi‐structured nanofiber materials are prepared via template‐assisted solvothermal method and characterized by X‐ray diffraction (XRD ) , scanning electron microscopy (SEM ) and transmission electron microscopy (TEM) . The photocatalytic degradation of Methylene blue (MB) is used as the model reaction to evaluate the photocatalytic activity of the samples . The results indicate that the pH value of the Ti4+ /EtOH influences not only the structure and morphology but also the surface charge of the samples and light absorption properties . The good photocatalytic activity of the samples , prepared under higher pH value of the precursor solution Ti4+ /EtOH ,is mainly ascribed to their multi‐structure and negative charge of the surface .