The efficient electronic wiring of silica-encapsulated laccases has been applied for the first time to the bioelectrocatalytic reduction of oxygen. The synthesized silica/laccase composites were evaluated electrochemically and characterized by UV–vis, Fourier transform infrared (FT-IR), dynamic light scattering, and X-ray photoelectron spectroscopy. FT-IR measurements showed that laccase preserved its native-like structure after the biosilicification process. The one-pot biosilicification synthesis facilitated the accommodation of the enzymes in highly effective orientations for the direct electron transfer of the T1 redox centers. Consequently, the biosilicified laccase deposited on Ni electrodes exhibited an efficient bioelectrocatalytic oxygen reduction, with current densities of up to 0.94 mA/cm².

中文翻译：

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封装的漆酶作为氧还原反应的有效电催化剂

二氧化硅包封的漆酶的有效电子布线已首次应用于氧气的生物电催化还原。对合成的二氧化硅/漆酶复合材料进行了电化学评估，并通过紫外可见，傅立叶变换红外（FT-IR），动态光散射和X射线光电子能谱进行了表征。FT-IR测量表明，在生物硅化过程后，漆酶保留了其天然的结构。一锅式生物硅化合成促进了酶在T1氧化还原中心的直接电子转移的高度有效方向上的适应。因此，沉积在Ni电极上的生物硅化的漆酶表现出有效的生物电催化氧还原，电流密度高达0.94mA / cm ²。