The Effect of Residual Palladium Catalyst Contamination on the Photocatalytic Hydrogen Evolution Activity of Conjugated Polymers
The Effect of Residual Palladium Catalyst Contamination on the Photocatalytic Hydrogen Evolution Activity of Conjugated Polymers
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DOI：
10.1002/aenm.201802181
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发表时间：
2018-12-05
影响因子：
27.8
通讯作者：
McCulloch, Iain
中科院分区：
文献类型：
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作者：
Kosco, Jan;Sachs, Michael;McCulloch, Iain
以胶体聚（9，9-二辛基芴-alt-苯并噻二唑）（F8 BT）纳米粒子为模型体系，系统研究了残留Pd对共轭聚合物光催化体系析氢活性的影响.残留的Pd，源自通过Pd催化的缩聚聚合的F8 BT的合成，观察到在聚合物内的均匀分布的Pd纳米颗粒的形式。残留的Pd对于从该聚合物中观察到的任何析氢都是必不可少的，并且非常低的Pd浓度（< 40 ppm）足以对析氢反应（HER）速率具有显著影响。HER速率随着Pd浓度的增加而线性增加，
The effect of residual Pd on hydrogen evolution activity in conjugated polymer photocatalytic systems is systematically investigated using colloidal poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) nanoparticles as a model system. Residual Pd, originating from the synthesis of F8BT via Pd catalyzed polycondensation polymerization, is observed in the form of homogeneously distributed Pd nanoparticles within the polymer. Residual Pd is essential for any hydrogen evolution to be observed from this polymer, and very low Pd concentrations (< 40 ppm) are sufficient to have a significant effect on the hydrogen evolution reaction (HER) rate. The HER rate increases linearly with increasing Pd concentration from