Highly efficient direct oxygen electro-reduction by partially unfolded laccases immobilized on waste-derived magnetically separable nanoparticles†,Nanoscale

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Highly efficient direct oxygen electro-reduction by partially unfolded laccases immobilized on waste-derived magnetically separable nanoparticles†
Nanoscale ( IF 5.8 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c8nr00512e
Daily Rodríguez-Padrón _{1,

2,

3,

4,

5} , Alain R. Puente-Santiago _{1,

2,

3,

4,

5} , Alvaro Caballero _{4,

5,

6} , Alina M. Balu _{1,

2,

3,

4,

5} , Antonio A. Romero _{1,

2,

3,

4,

5} , Rafael Luque _{1,

2,

3,

4,

5}

Affiliation

A biocatalytic system based on laccase functionalized waste-derived iron oxide nanoparticles (LAC-DA-Fe₂O₃) was designed by a mechanochemical approach and employed in the electrocatalytic reduction of oxygen. Full characterization of the obtained bioconjugates revealed that the protein adopted a partially unfolded state. The mentioned configuration, together with the geometry coordination changes along the T1 center can be further related to a high bioelectrocatalytic response. A current density up to 2.9 mA cm⁻² has been achieved, which is among the highest values reported in literature for laccase functionalized nanomaterials.

中文翻译：

固定在废物衍生的可磁分离纳米颗粒上的部分未折叠漆酶可实现高效的直接氧气电还原†

通过机械化学方法设计了一种基于漆酶功能化废物衍生的氧化铁纳米颗粒（LAC-DA-Fe ₂ O ₃）的生物催化系统，并将其用于电催化还原氧气。所获得的生物结合物的全面表征表明该蛋白质采用了部分展开的状态。提到的配置以及沿着T1中心的几何配位变化可能进一步与高生物电催化响应有关。已经实现了高达2.9 mA cm ^-2的电流密度，这是文献中漆酶功能化纳米材料报道的最高值之一。

更新日期：2018-02-05

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