CAJ | 학술논문

以壳聚糖( CS)为辅助材料,利用层层自组装方法( LbL)制备了WO3复合薄膜材料( CS/WO3).采用紫外-可见吸收光谱( UV-Vis)、扫描电子显微镜( SEM)和循环伏安扫描( CV)等手段对CS/WO3纳米复合材料的形貌和电化学性能进行了表征.利用电化学和UV-Vis联机技术研究了复合材料的电致变色性能.结果表明,该复合材料呈现出从无色到蓝色的颜色调变,其光反差可达48.0%,着色效率为58.5 cm2/C,着色与褪色时间分别为9.5和1.8 s.
이각취당( CS)위보조재료,이용층층자조장방법( LbL)제비료WO3복합박막재료( CS/WO3).채용자외-가견흡수광보( UV-Vis)、소묘전자현미경( SEM)화순배복안소묘( CV)등수단대CS/WO3납미복합재료적형모화전화학성능진행료표정.이용전화학화UV-Vis련궤기술연구료복합재료적전치변색성능.결과표명,해복합재료정현출종무색도람색적안색조변,기광반차가체48.0%,착색효솔위58.5 cm2/C,착색여퇴색시간분별위9.5화1.8 s.
A nanocomposite material consisting of WO3 and chitosan ( CS ) was fabricated by layer-by-layer ( LbL) method in which CS was used as the additional component. The morphology and electrochemical behavior of the composite film were investigated by UV-Vis spectra, scanning electron microscopy( SEM) and cyclic voltammograms( CV) . The electrochromic properties of the film were performed by in situ UV-Vis spec-troscopy and electrochemical station. The results showed that the composite film was found to switch from colorless to deep blue, with the optical contrast of 48. 0% and coloration efficiency of 58. 5 cm2/C. Further-more, the switching times were 9. 5 s for coloration and 1. 8 s for bleaching. Obviously, chitosan plays an im-portant role in enhancing electrochromic performance of WO3-based material.