针状ZnO的纳米纤维素诱导制备及光催化性能

以纳米纤维素（NCC）为形貌诱导剂,乙酸锌为反应前驱物,采用水热法合成针状ZnO。通过X射线衍射仪（XRD）、扫描电子显微镜（SEM）和能量色散X射线光谱仪（EDS）对ZnO的形貌、微观结构、结晶特性进行了表征,并探讨了其形成机理及光催化降解性能。结果表明水热条件下,NCC能诱导ZnO在其表面沉积和生长,可形成直径260nm、长度10μm的针状结构,诱导制备的针状ZnO室温下2h内对孔雀绿的紫外光降解效率为88.5%。针状ZnO在光催化剂等领域具有潜在应用价值。

Nanocrystalline Cellulose Induced Preparation and Photocatalytic Properties of Needle-like ZnO

Needle-like ZnO was prepared by hydrothermal method with nanocrystalline cellulose（NCC） as morphology-inducing agent and zinc acetate as reaction precursors. Morphology, microstructure and crystalline characteristics of ZnO was characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, and energy dispersive X-ray spectroscopy （EDS）. The formation mechanism and photocatalytic degradation performance was discussed. The results showed that under hydrothermal conditions, NCC could induce ZnO on its surface deposition and growth, needle-like structure of diameter and length was 260 nm and 10 ~n respectively was formed. Photocatalytic rate was 88.5% within two hours under UV light at room temperature. Needle-like ZnO could be used in the field ofphotocatalyst with potential application.