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设计了TiO2修饰介孔分子筛复合材料的综合实验.采用水热法结合溶胶-凝胶法制备了锐钛矿型TiO2修饰介孔分子筛的光催化复合材料(TiO2-MCM-41),运用多种分析手段(SEM、XRD、FT-IR及UV-Vis)对其结构进行了表征,研究其对有机染料亚甲基蓝溶液模拟污水的光催化降解活性,探讨了材料组成、结构与性能之间的... 相似文献
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近些年来,由于人们对自然资源的过度开发,造成居住的生活环境越来越恶劣。比如,燃料油中含硫化合物燃烧产生的SOx,它不仅是酸雨的主要来源,而且会加剧NOx和颗粒物的排放,严重污染环境,并可导致人体肺癌。河北科技大学李发堂教授及团队在解决SOx处理这一难题上做出了探索研究。取得了许 相似文献
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Nanosized photocatalyst ZnS particles supported on silica and polyvinyl alcohol was successfully prepared by complex transformation method. The photocatalytic reduction of CO2 was carried out in the presence of nanosized ZnS catalyst irradiated by a high-pressure mercury-vapor lamp to give the main products of formaldehyde and ethanol. The catalytic ability of ZnS characterized by the uptaken rate of CO2P volume in the reaction system depended upon the preparing conditions of nanosized ZnS catalysts. Decreasing the concentration of Na2S and increasing the molar ratio of oxygen in the PVA to Zn2 could result in the decreasing of the size of ZnS parti- 相似文献
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