Synthesis of hierarchical Polystyrene/Polyaniline@Au nanostructures of different surface states and studies of their catalytic properties

Synthesis of hierarchical Polystyrene/Polyaniline@Au nanostructures of different surface states and studies of their catalytic properties
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不同表面态多级聚苯乙烯/聚苯胺@Au纳米结构的合成及其催化性能研究

DOI:
10.1007/s11426-014-5106-y
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发表时间:
2014-04
影响因子:
9.6
通讯作者:
Zhang XiaoWei
Zhang XiaoWei
中科院分区:
化学1区
文献类型:
--
作者:
Yang Mu;Luan Yi;Tao JinZhang;Zhang XiaoWei

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我们通过种子溶胀聚合和原位还原过程合成了多级聚苯乙烯/聚苯胺@Au (PS/PANI@Au)催化剂。 PS/PANI@Au催化剂具有以PS为种子和模板的核、含有纤维的PANI壳和表面均匀的金纳米粒子。掺杂/去掺杂过程引起的 PANI 链构型变化导致金纳米粒子的负载量不同。选择 4-硝基苯酚的还原作为探针反应来评估负载型金纳米催化剂的催化活性。催化结果表明,PS/PANI载体的去掺杂处理为金属纳米颗粒提供了更强的配位能力以及更多的-N=基团,从而对4-硝基苯酚的还原具有更好的催化性能。
We synthesized hierarchical Polystyrene/Polyaniline@Au (PS/PANI@Au) catalysts through a seeded swelling polymerization and in-situ reduction procedure. PS/PANI@Au catalysts possess a core of PS as seed and template, a PANI shell with fibers and uniform gold nanoparticles on the surface. The configuration changes of the PANI chains resulting from the doping/dedoping procedure led to various loading amounts of Au nanoparticles. Reduction of 4-nitrophenol was chosen as the probe reaction to evaluate the catalytic activity of supported Au nanocatalysts. The catalytic results indicated that dedoping treatment of the PS/PANI supports provides stronger coordinative ability to metal nanoparticles as well as more -N= groups, which results in a better catalytic performance towards the reduction of 4-nitrophenol.
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