Luo Dongxiang, Chen Qizan, Qiu Ying, Liu Baiquan, Zhang Menglong
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
Guangdong Research and Design Center for Technological Economy, Guangzhou 510000, China.
Materials (Basel). 2019 May 27;12(10):1713. doi: 10.3390/ma12101713.
This work focuses on the crystal size dependence of photoactive materials and light absorption enhancement of the addition of carbon dots (CDs). mac-FTO (macroporous fluorine-doped tin oxide) films with an inverse opal structure are exploited to supply enhanced load sites and to induce morphology control for the embedded photoactive materials. The BiWO@mac-FTO photoelectrode is prepared directly inside a mac-FTO film using a simple in situ synthesis method, and the application of CDs to the BiWO@mac-FTO is achieved through an impregnation assembly for the manipulation of light absorption. The surface morphology, chemical composition, light absorption characteristics and photocurrent density of the photoelectrode are analyzed in detail by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), Energy dispersive X-ray analysis (EDX) and linear sweep voltammetry (LSV).
这项工作聚焦于光活性材料的晶体尺寸依赖性以及添加碳点（CDs）对光吸收的增强作用。具有反蛋白石结构的大孔氟掺杂氧化锡（mac-FTO）薄膜被用于提供更多的负载位点，并对嵌入的光活性材料进行形貌控制。采用简单的原位合成方法直接在mac-FTO薄膜内制备BiWO@mac-FTO光电极，并通过浸渍组装将CDs应用于BiWO@mac-FTO以调控光吸收。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、紫外-可见漫反射光谱（DRS）、能量色散X射线分析（EDX）和线性扫描伏安法（LSV）对光电极的表面形貌、化学成分、光吸收特性和光电流密度进行了详细分析。
