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Synergistic amplification of catalytic hydrogen generation by a thin-film conducting polymer composite

机译：协同催化氢的放大一代的薄膜导电聚合物复合

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摘要

This work reports a composite of poly(3,4-ethylenedioxythiophene) (PEDOT) that is notably more catalytically active for hydrogen generation than the industry-standard benchmark catalyst, Pt, under the same conditions. A PEDOT thin-film containing nanoparticulate Ni (nano-Ni) and reduced graphene oxide (rGO) in the specific molar ratio of 5.6 (C; PEDOT) : 1 (Ni) : 5.2 (C; other), (photo)catalytically generated H-2 at 3.6 mA cm(-2) (including ca. 0.2 mA cm(-2) due to the light illumination) after 3 h at -0.75 V (vs. Ag/AgCl) in 0.05 M H2SO4/0.2 M Na2SO4 under 0.25 sun. A control nano-Ni/rGO film containing the same quantities of nano-Ni and rGO but without any PEDOT, yielded 2.1 mA cm(-2), indicating that the PEDOT synergistically amplified the above result by 71%. Other ratios of the above PEDOT composite produced notably lower activities. Control PEDOT, PEDOT/nano-Ni, and PEDOT/rGO films were an order of magnitude less catalytically active. A control bare Pt electrode produced only 2.2 mA cm(-2) under the same conditions. Studies suggested the origin of the synergistic amplification to involve the PEDOT electrically connecting the largest number of active sites by the shortest, most efficient pathways for hole transport. These results confirm the proposition that thin-film conducting polymers involving very specific, optimum ratios of catalyst density to thickness may synergistically amplify catalysis.
机译：这项工作的综合报告材料间是的运动)(PEDOT)特别是对氢催化地更活跃代比行业标准的基准催化剂,Pt,在同样的条件下。薄膜包含nanoparticulate倪(nano-Ni)并降低石墨烯氧化物(rGO)具体摩尔比为5.6 (C;其他),(图)催化地生成2为3.6马厘米(2)(包括马0.2厘米(2)由于光照明)3 h后在-0.75 V (vs。在0.05 M H2SO4/0.2 M Ag / AgCl) Na2SO4低于0.25太阳。相同数量的nano-Ni和rGO但没有任何PEDOT,马产生了2.1厘米(2),表明上面的PEDOT放大吗结果71%。复合产生明显较低的活动。控制PEDOT, PEDOT / nano-Ni,和PEDOT / rGO电影低一个数量级催化地活跃。2.2厘米(2)在相同的条件下。建议协同的起源涉及PEDOT电放大连接的最大数量的活跃的网站在洞的最短,最有效的途径交通工具。这涉及非常的薄膜导电聚合物具体,催化剂密度的最优比例厚度可能放大协同催化。

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