【摘要】 用均相沉淀法制备了NiO粉体,并用XRD和TEM对粉体的晶型及颗粒形貌进行了表征。NiO在紫外光谱区域内具有较强的宽带吸收特性,在紫外光照射下光催化活性高于金红石相的TiO2。以蒽醌染料B-RN和KN-R为降解对象,紫外灯为光源,研究了光照、催化剂的热处理温度、催化剂用量等因素对染料降解率的影响。结果表明:NiO有良好的光催化活性,催化剂在热处理温度350℃、用量100 mg时光催化效果最佳,且在未曝入O2的条件下NiO的光催化活性优于p-25 TiO2。更多还原

【Abstract】 NiO was prepared by the homogeneous precipitation method.Its microstructure and morphology were analyzed by X-ray diffraction(XRD) and transmission electron microscopy(TEM).Generally,photocatalytic activity of NiO is higher than that of rutile-type TiO2 under UV light illumination as NiO has higher adsorption ability of broadband in UV spectrum.The effects of illumination,roasting temperature and the dosage of photocatalyst on photocatalytic degradation efficiency of anthraquinone dye B-RN and KN-R under UV were studied.The results show that NiO has high photocatalytic activity,and optimal condition is that temperature is 350℃ and dosage of photocatalyst is 100?mg.What’s more,the photocatalytic activity of NiO is better than that of TiO2 under the same condition without O2.更多还原