Introducing polyethyleneimine (PEI) into the electrospun fibrous membranes containing diiron mimics of [FeFe]-hydrogenase: Membrane electrodes and their electrocatalysis on proton reduction in aqueous media
Introducing polyethyleneimine (PEI) into the electrospun fibrous membranes containing diiron mimics of [FeFe]-hydrogenase: Membrane electrodes and their electrocatalysis on proton reduction in aqueous media
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将聚乙烯亚胺（PEI）引入含有[FeFe]-氢化酶二铁模拟物的电纺纤维膜中：膜电极及其对水介质中质子还原的电催化
DOI：
10.1016/j.ijhydene.2015.02.050
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发表时间：
2015-04
影响因子：
7.2
通讯作者：
Liu, Xiaoming
中科院分区：
文献类型：
--
作者：
Zhu, Diyang;Xiao, Zhiyin;Liu, Xiaoming
用静电纺丝技术制备了一系列以醋酸纤维素为基质，并以[FeFe]-氢化酶二铁亚基的二铁模拟物为功能基的纤维膜。将四种模拟物[Fe_2（μ-edt）（CO）_6]（1）、[Fe_2 {μ-SCH_2CH（CH_2 OH）S}（CO）_6]（2）、[Fe_2 {（μ-S）_2（C_6 O_2 H_4）}（CO）_6]（3）和[Fe_2 {μ-SCH_2CH（OH）CH_2（OH）}_2（CO）_6]（4）引入到静电纺丝纤维膜中。为了提高EFM的导电性，将氧化石墨烯化学修饰到醋酸纤维素上。采用红外光谱、热重分析和扫描电镜等技术对所得的EFM膜进行了表征。电化学行为和质子还原电催化性能表明，在水介质中，含配合物2的膜（M2）最耐用，表现出最好的催化性能。在含配合物2的静电纺丝体系中进一步掺杂碱性聚合物PEI，以增强质子还原电催化过程中的质子转移。我们的研究结果表明，PEI的存在确实提高了电化学催化性能的质子还原，推测是由于在催化质子转移的增强。
A number of fibrous membranes with cellulose acetate as a matrix and functionalised with diiron mimics of the diiron subunit of [FeFe]-hydrogenase were prepared by electrospinning technique. Four mimics, [Fe2(μ-edt) (CO)6] (1), [Fe2{μ-SCH2CH(CH2OH)S}(CO)6] (2), [Fe2{(μ-S)2(C6O2H4)}(CO)6] (3) and [Fe2{μ-SCH2CH(OH)CH2(OH)}2(CO)6] (4), bearing 0, 1, 2 and 4 hydroxyl group(s) were incorporated into the electrospun fibrous membranes (EFMs). To improve the conductivity of theEFMs, graphene oxide was chemically gratified onto cellulose acetate. The resultantEFMs membranes were characterized using infrared spectroscopic, thermogravimetric and scanning electron microscopic techniques. The electrochemical behaviours and electrocatalytic performance on proton reduction of the membrane electrodes assembled from theEFMs showed in aqueous media that the membrane (M2) containing complex2is most durable and exhibited the best catalytic performance. To the electrospinning system containing complex2was further doped with basic polymer PEI to enhance tentatively proton transfer during the electrocatalysis of proton reduction. Our results showed that the presence of PEI in theEFMs did improve the electrocatalytic performance of proton reduction, presumably due to the enhancement in proton transfer in the catalysis.
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影响因子：
7.2
作者：
Sybirna, Kateryna;Ezanno, Pierre;Bottin, Herve
通讯作者：
Bottin, Herve
影响因子：
4
作者：
Caixia Zhan;Xiufeng Wang;Zhenhong Wei;David J Evans;Xiang Ru;Xianghua Zeng;Xiaoming Liu
通讯作者：
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影响因子：
15
作者：
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通讯作者：
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影响因子：
7.2
作者：
Gao, Shang;Huang, Shuai;Zhao, Jianxun
通讯作者：
Zhao, Jianxun
影响因子：
15
作者：
HUMMERS, WS;OFFEMAN, RE
通讯作者：
OFFEMAN, RE