以微晶纤维素（MCC）为模板,采用原位复合法制备MCC/CdS纳米复合材料。研究了超声波预处理以及镉离子、硫离子物质的量比对复合效果的影响,用扫描电镜（SEM）,原子力显微镜（AFM）,X射线衍射,荧光光谱（PL）以及激光共聚焦显微镜（CLSM）对复合材料的结构及性能进行表征。研究表明,超声波预处理后的纤维素对镉离子吸附能力更强,粒径为30 nm~100nm的CdS粒子均匀分布于纤维素表面,所得CdS为立方型晶体,复合材料体现出一定强度的光致发光性,较佳Cd2＋∶S2-（物质的量比）为3∶1。
Cellulose/CdS nanocomposites were prepared by in-situ process using microcrystalline cellulose（MCC） as matrix.The influences of reaction conditions such as reactant mol ratio and the effect of ultrasonic pretreatment were studied.The structure and properties of obtained cellulose/CdS nanocomposites were investigated by means of scanning electron microscope（SEM）,X-ray diffraction（XRD）,atomic force microscopy（AFM）,fluorescence spectrum and confocal laser scanning microscopy（CLSM）.The results show that ultrasonic pretreatment on cellulose makes it a greater capacity of cadmium ion adsorption.With the size between 30 nm～100 nm,CdS particles are evenly distributed on MCC surface.XRD indicate that CdS is cubic phase and the composite materials have the property of photoluminescence.The optimal molar ratio is 3∶1（Cd2＋∶S2-）.
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