Photocatalytic syngas production using conjugated organic polymers
Photocatalytic syngas production using conjugated organic polymers
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DOI：
10.1039/d0ta09613j
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发表时间：
2021-02-21
影响因子：
11.9
通讯作者：
Sprick, Reiner Sebastian
中科院分区：
文献类型：
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作者：
Fu, Zhiwei;Vogel, Anastasia;Sprick, Reiner Sebastian
据报道，一系列线性共轭聚合物通过牺牲孔洞清除剂促进光催化水中CO2的还原。两种含二苯并[b，d]噻吩砜的光催化剂活性最高。二苯并[b，d]噻吩砜与苯基共聚物（P7）的CO生成速率最高，但H-2的协同演化速率也最高。二苯并[b，d]噻吩砜均聚物的CO生成活性较低，但H-2生成速率较高，这可以解释为驱动力的变化有利于质子还原。材料合成过程中残留的钯促进了氢的协同演化。通过改变光催化剂中钯的量，可以得到H-2与CO的不同比例的合成气。
A range of linear conjugated polymers is reported that promote photocatalytic CO2 reduction in water with a sacrificial hole-scavenger. Two photocatalysts containing dibenzo[b,d]thiophene sulfone were found to be the most active materials. A dibenzo[b,d]thiophene sulfone co-polymer with phenylene (P7) had the highest rate for producing CO, but also for the co-evolution of H-2. The homopolymer of dibenzo[b,d]thiophene sulfone was found to be less active for CO production, but had a higher H-2 production rate, which is explained by changes in the driving-force favouring proton reduction. The co-evolution of hydrogen is facilitated by residual palladium from the material synthesis. By varying the amount of palladium in the photocatalyst, syngas can be obtained with varying ratios of H-2 to CO.