摘要
以3-溴噻吩单体和粉体氧化铜为原料,采用FeCl3氧化偶联的方法制备负载氧化铜的聚(3-溴噻吩)光催化剂(thBr-CuO)。负载氧化铜后,thBr-CuO的光吸收能力与光生载流子利用率得到明显改善。可见光下,thBr-CuO催化甲苯转化的速率达到0.69 mmol/(g·h),高于初始聚(3-溴噻吩)。猝灭实验与香豆素荧光探针法证实该光催化过程中的主要活性物种为光生空穴与羟基自由基。通过光生电子-空穴对的有效分离以及对过氧化氢的高效利用,3-溴噻吩基共轭有机聚合物的光催化性能显著提升。
Using 3-bromothiophene and copper oxide powder as raw materials,CuO/poly(3-bromothiophene)composite photocatalyst(thBr-CuO)was prepared by oxidative coupling reaction of 3-bromothiophene with FeCl3 as the oxidant.With copper oxide loaded,the photoabsorption and utilization of photogenerated carrier of the polymer was obviously improved.Under visible light,the conversion rate of toluene catalyzed by thBr-CuO reached 0.69 mmol/(g·h),which was higher than that of initial poly(3-bromothiophene).Fluorescence probing by coumarin and quenching experiment confirmed that the main active species in the photocatalytic process were photogenerated holes and hydroxyl radicals.The photocatalytic performance of 3-bromothiophene-based conjugated organic polymer was enhanced through the effective separation of photogenerated electron-hole pairs and the efficient utilization of hydrogen peroxide.
作者
国瑞
吴文婷
GUO Rui;WU Wen-ting(College of Chemistry and Chemical Engineering,China University of Petroleum,Shandong Qingdao 266580)
出处
《胶体与聚合物》
CAS
2023年第3期126-130,共5页
Chinese Journal of Colloid & Polymer
基金
国家基金面上项目(22179146)
国家自然科学基金重点项目(22138013)。
关键词
共轭有机聚合物
聚(3-溴噻吩)
光催化氧化
甲苯
活性氧物种
Conjugated Organic Polymers
Poly(3-bromothiophene)
Photocatalytic Oxidation
Toluene
Reactive Oxygen Species
