以PVC和ZnC l2为前驱物,利用一种简单、快速的方法制备了ZnO/共轭高分子(P)复合微粒,并通过XRD、IR和UV-V is等技术对其进行了表征。结果表明,其中的P为具有活性基团和不同长度共轭链的高分子,且与ZnO以Zn-O-C相键合;该复合材料的吸收...以PVC和ZnC l2为前驱物,利用一种简单、快速的方法制备了ZnO/共轭高分子(P)复合微粒,并通过XRD、IR和UV-V is等技术对其进行了表征。结果表明,其中的P为具有活性基团和不同长度共轭链的高分子,且与ZnO以Zn-O-C相键合;该复合材料的吸收拓宽至整个紫外-可见光区。前驱物(m(ZnC l2)∶m(PVC)=3∶1)经200℃热处理15 m in制得的ZnO/P复合微粒5 m in内可将亚甲基(MB)彻底脱色,并且该复合催化剂重复使用6次后对MB的脱色率依然可达90%以上。展开更多
Polyaniline （PAn） sensitized nanocrystalline TiO2 composites （TiO2/PAn） were successfully prepared and used as an efficient photocatalyst for the degradation of dye methylene blue （MB）. The results showed that P...Polyaniline （PAn） sensitized nanocrystalline TiO2 composites （TiO2/PAn） were successfully prepared and used as an efficient photocatalyst for the degradation of dye methylene blue （MB）. The results showed that PAn was able to sensitize TiO2 efficiently and the composite photocatalyst could be activated by absorbing both the ultraviolet and visible light （λ： 190 ～ 800 nm）, whereas pure TiO2 absorbed ultraviolet light only （λ 〈 380 nm）. Under the irradiation of natural light, MB could be degraded more efficiently on the TiO2/PAn composites than on the TiO2 Furthermore, it could be easily separated from the solution by simple sedimentation.展开更多
文摘以PVC和ZnC l2为前驱物,利用一种简单、快速的方法制备了ZnO/共轭高分子(P)复合微粒,并通过XRD、IR和UV-V is等技术对其进行了表征。结果表明,其中的P为具有活性基团和不同长度共轭链的高分子,且与ZnO以Zn-O-C相键合;该复合材料的吸收拓宽至整个紫外-可见光区。前驱物(m(ZnC l2)∶m(PVC)=3∶1)经200℃热处理15 m in制得的ZnO/P复合微粒5 m in内可将亚甲基(MB)彻底脱色,并且该复合催化剂重复使用6次后对MB的脱色率依然可达90%以上。
文摘Polyaniline （PAn） sensitized nanocrystalline TiO2 composites （TiO2/PAn） were successfully prepared and used as an efficient photocatalyst for the degradation of dye methylene blue （MB）. The results showed that PAn was able to sensitize TiO2 efficiently and the composite photocatalyst could be activated by absorbing both the ultraviolet and visible light （λ： 190 ～ 800 nm）, whereas pure TiO2 absorbed ultraviolet light only （λ 〈 380 nm）. Under the irradiation of natural light, MB could be degraded more efficiently on the TiO2/PAn composites than on the TiO2 Furthermore, it could be easily separated from the solution by simple sedimentation.
