Bioelectrochemical Oxidation of Water

详细信息    查看全文

• 作者：Marcos Pita ; Diana M. Mate ; David Gonzalez-Perez ; Sergey Shleev ; Victor M. Fernandez ; Miguel Alcalde ; Antonio L. De Lacey
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：April 23, 2014
• 年：2014
• 卷：136
• 期：16
• 页码：5892-5895
• 全文大小：273K
• 年卷期：v.136,no.16(April 23, 2014)
• ISSN：1520-5126

文摘

The electrolysis of water provides a link between electrical energy and hydrogen, a high energy density fuel and a versatile energy carrier, but the process is very expensive. Indeed, the main challenge is to reduce energy consumption for large-scale applications using efficient renewable catalysts that can be produced at low cost. Here we present for the first time that laccase can catalyze electrooxidation of H₂O to molecular oxygen. Native and laboratory-evolved laccases immobilized onto electrodes serve as bioelectrocatalytic systems with low overpotential and a high O₂ evolution ratio against H₂O₂ production during H₂O electrolysis. Our results open new research ground on H₂O splitting, as they overcome serious practical limitations associated with artificial electrocatalysts currently used for O₂ evolution.