Robust Carbon-Based Electrodes for Hydrogen Evolution through Site-Selective Covalent Attachment of an Artificial Metalloenzyme
Robust Carbon-Based Electrodes for Hydrogen Evolution through Site-Selective Covalent Attachment of an Artificial Metalloenzyme
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通过人工金属酶的位点选择性共价连接析氢的鲁棒碳基电极
DOI:
10.1021/acsaem.0c02069
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发表时间:
2020
影响因子:
6.4
通讯作者:
Shafaat, Hannah S.
中科院分区:
文献类型:
--
作者:
Treviño, Regina E.;Slater, Jeffrey W.;Shafaat, Hannah S.
The use of biological systems for electrochemical energy conversion applications is often limited by instability of the protein or protein–electrode system. Here, we present a simple but efficient method for covalent attachment of nickel-substituted rubredoxin (NiRd), a model hydrogenase, to an unmodified graphite electrode based on amide bond formation. The resultant electrodes are shown to be highly active for H2evolution over a period of several weeks. The effects of different attachment methods on interfacial electron transfer (ET) rates and catalysis are investigated, with decreased ET rates and increased background reactivity observed for surface-modified electrodes. Electrochemical simulations reveal that reduced protein dynamics of the attached NiRd enzyme are likely responsible for decreased catalytic rates by modulating the intramolecular proton transfer step. Ultimately, this straightforward approach can be broadly applied to diverse redox-active proteins and enzymes and will expand the utility of such systems by conferring increased stability over extended periods of time.
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DOI:
10.1007/s00775-015-1268-0
发表时间:
2015
期刊:
JBIC Journal of Biological Inorganic Chemistry
影响因子:
--
作者:
Biplab K. Maiti;L. Maia;C. Silveira;S. Todorović;C. Carreira;Marta S P Carepo;R. Grazina;I. Moura;S. R. Pauleta;J. Moura
通讯作者:
J. Moura
影响因子:
4.7
作者:
Dante W. Romanini;M. Francis
通讯作者:
Dante W. Romanini;M. Francis
影响因子:
15
作者:
Jackson, Megan N.;Oh, Seokjoon;Surendranath, Yogesh
通讯作者:
Surendranath, Yogesh
影响因子:
3.9
作者:
Anders Thapper;A. Rizzi;C. Brondino;A. G. Wedd;R. Pais;Biplab K. Maiti;I. Moura;S. R. Pauleta;J. Moura
通讯作者:
J. Moura
影响因子:
4.6
作者:
Slater,JeffreyW;Marguet,SeanC;Cirino,SabrinaL;Maugeri,PearsonT;Shafaat,HannahS
通讯作者:
Shafaat,HannahS