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A facile synthesis of hierarchically porous carbon derived from serum albumin by a generated-templating method for efficient oxygen reduction reaction

机译:通过产生的模板衍生自血清白蛋白的分层多孔碳的容纳合成,用于高效氧还原反应

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Hierarchically porous carbons (HPCs), with large specific surface area, abundant porous channels and adequate anchor points, act as one type of ideal carbon supports for the preparation of single-atom electrocatalysts. In this study, the blood plasma-derived HPC with an interconnected porous framework is constructed via a generated-template method, with the formation of ZnS nanoparticles from the abundant disulfide bonds (–S–S–) in serum albumin. After the thermal activation with heme-containing molecules (also from the bovine-blood biowaste), the HPC exhibits high-exposure and low-spin-state Fe( II )–N _(4) atomic active sites, and thereby presents a superior oxygen reduction reaction activity (the half wave potential of 0.87 V) and excellent stability (a 4 mV negative shift after 3000 potential cycles), even comparable with the benchmark Pt/C. This work delivers a new insight into the design and synthesis of porous carbons and carbon-based electrocatalysts to develop bio-derived materials in the field of clean energy conversion and storage.
机译:具有大的比表面积,丰富的多孔通道和足够的锚点,充当一种用于制备单原子电催化剂的理想碳支撑件的阶级多孔碳碳(HPC)。在该研究中,通过产生的模板方法构建具有相互连接的多孔框架的血浆衍生的HPC,在血清白蛋白中形成ZnS纳米颗粒。血清白蛋白中的丰富二硫键(-S-S-)。在用含血红素分子(也来自牛血生物流的热活化)后,HPC表现出高曝光和低旋转状态Fe(II)-N _(4)原子活性位点,从而呈现出优越的氧还原反应活性(0.87V的半波电位)和优异的稳定性(3000次潜在循环后的4mV阴性偏移),甚至与基准Pt / c相当。这项工作提供了新的洞察多孔碳和基于碳电催化剂的设计和合成,以在清洁能量转换和储存领域开发生物衍生材料。

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