中文摘要：

以玉米秸秆为模板，采用溶胶？凝胶法制备S掺杂FeVO4光催化剂，并通过X射线衍射（XRD）、扫描电镜（SEM）、样品比表面积分析（BET）、X 射线光电子能谱分析（XPS）和紫外可见吸收光谱（UV-Vis）等测试手段，对样品进行表征。结果表明：S掺杂前后光催化剂均为三斜型，掺杂后样品的表面形貌产生了变化，比表面积轻微增大；掺杂的S取代FeVO4晶格氧，生成更多的氧空位及Fe2＋，同时增强样品的光吸收性能。在可见光照射下，通过光催化降解甲基橙溶液评价S掺杂对FeVO4光催化剂活性的影响，当S掺杂（摩尔比）为6%时，FeVO4对甲基橙溶液的脱色率较未掺杂前提高约49%。

英文摘要：

S-doped FeVO4 photocatalysts were successfully prepared by sol-gel method taking the corn stem as template and characterized with X-ray diffraction （XRD）, scanning electron microscope （SEM）, specific surface area （BET）, X-ray photoelectron spectroscopy （XPS） and UV-vis absorption spectroscopy （UV-Vis）. The results demonstrate that all the FVO or S/FVO photocatalysts consist of triclinic phase, S doping has great influence on morphology but little on specific surface area. XPS spectra show that S doping replaces the subsistent O, and S-Fe-O form. The photocatalytic activity was evaluated via visible-light by photocatalytic oxidation of methyl orange （MO）. The results of photocatalytic degradation to methyl orange show that S doping can improve the photocatalytic activity and the MO decoloration rate is more 49%than that of pure FeVO4 when S doping is 6%.