文章摘要
PDMS基上转换材料的制备与光催化应用
Preparation and photo-catalysis application of upconversion materials based on PDMS
投稿时间:2019-03-04  修订日期:2019-05-10
DOI:
中文关键词: TTA固态上转换  光电流响应  光催化降解  聚二甲基硅氧烷  O/W型微乳液.
英文关键词: TTA solid-state upconversion  photocurrent response  photocatalytic degradation  Polydimethylsiloxane  O/W microemulsion.
基金项目:国家杰出青年科学基金;国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
吴振伟 苏州科技大学 549115753@qq.com 
陈佳 苏州科技大学  
韩鹏举 苏州科技大学  
陈硕然 苏州科技大学  
宋飒飒 苏州科技大学  
叶常青 苏州科技大学 yechangqing@mail.usts.edu.cn 
王筱梅 苏州科技大学  
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中文摘要:
      将光敏剂四苯基卟啉钯(PdTPP)和湮灭剂9,10-二苯基蒽(DPA)溶解于甲苯,在Tween 20的乳化作用下与去离子水配制成O/W上转换微乳液;进一步与二甲基硅氧烷共混,将O/W上转换微乳液体系负载于固化后的聚二甲基硅氧烷(PDMS)中,制得基于三线态-三线态湮灭(TTA)机制的PDMS固态上转换树脂材料。在半导体激光器(532 nm,70 mW/cm2)激发下,固态上转换材料可发射强的绿转蓝上转换荧光,固态上转换效率最大可达22%。将该材料应用于光电流响应和光催化降解过程中:三电极体系在PDMS固态上转换树脂上转换荧光的照射下,获得了0.9 μA的光电流,证明了光电流的产生源于上转换蓝光对ZnCdS薄膜的照射;Pt/WO3粉末存在和固态上转换蓝光照射的条件下,罗丹明B染料降解作用显著,最大光降解效率达到82.3%。
英文摘要:
      We dissolved the sensitizer Palladium (II) tetraphenylporphyrin (PdTPP) and emitter 9, 10-Diphenylanthracene (DPA) in toluene and prepared O/W microemulsion with water and Tween 20. Moreover, the O/W microemulsion were embedded into Polydimethylsiloxane (PDMS) resin to fabricate solid-state Triplet-triplet annihilation up-conversion (TTA-UC) materials. Under the simulation of a semiconductor laser (532 nm, 70 mW cm-2), PDMS TTA-UC materials revealed strong blue emission. The efficiency of solid-state TTA-UC can be 22% in the maximum. In the application measurement, three-electrode system obtained photoelectric current of 0.9 μA irradiated by UC emission from PDMS TTA-UC, which demonstrated that the photoelectric current was derived from the UC emission irradiation and ZnCdS membrane. In another case, remarkable degradation phenomenon of rhodamine B was observed under the condition of irradiation of UC emission from PDMS TTA-UC materials and existence of Pt/WO3. The maximum of the photo-catalysis efficiency can be 82.3%.
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