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Electrochemical Transparency of Graphene
ACS Nano ( IF 15.8 ) Pub Date : 2022-06-14 , DOI: 10.1021/acsnano.2c01786 Du Won Jeong 1, 2 , Kyuhyoung Kim 3 , Geonhee Lee 1 , Minsoung Kang 1 , Hyunju Chang 3 , A-Rang Jang 4 , Jeong-O Lee 1
ACS Nano ( IF 15.8 ) Pub Date : 2022-06-14 , DOI: 10.1021/acsnano.2c01786 Du Won Jeong 1, 2 , Kyuhyoung Kim 3 , Geonhee Lee 1 , Minsoung Kang 1 , Hyunju Chang 3 , A-Rang Jang 4 , Jeong-O Lee 1
Affiliation
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In the present study, we used the electrochemical transparency of graphene to show that the direct intercalation of alkali-metal cations is not a prerequisite for the redox reaction of Prussian blue (PB). PB thin films passivated with monolayer graphene still underwent electrochemical redox reactions in the presence of alkali-metal ions (K+ or Na+) despite the inability of the cations to penetrate the graphene and be incorporated into the PB. Graphene passivation not only preserved the electrochemical activity of the PB but also substantially enhanced the stability of the PB. As a proof of concept, we showed that a transparent graphene electrode covering PB can be used as an excellent hydrogen peroxide transducer, thereby demonstrating the possibility of realizing an electrochemical sensor capable of long-term measurements.
中文翻译：
石墨烯的电化学透明性
在本研究中，我们利用石墨烯的电化学透明性表明碱金属阳离子的直接嵌入不是普鲁士蓝 (PB) 氧化还原反应的先决条件。用单层石墨烯钝化的 PB 薄膜在碱金属离子（K +或 Na +) 尽管阳离子无法穿透石墨烯并结合到 PB 中。石墨烯钝化不仅保留了 PB 的电化学活性，而且大大提高了 PB 的稳定性。作为概念验证，我们展示了覆盖 PB 的透明石墨烯电极可以用作出色的过氧化氢传感器，从而证明了实现能够长期测量的电化学传感器的可能性。
更新日期：2022-06-14
中文翻译：
石墨烯的电化学透明性
在本研究中，我们利用石墨烯的电化学透明性表明碱金属阳离子的直接嵌入不是普鲁士蓝 (PB) 氧化还原反应的先决条件。用单层石墨烯钝化的 PB 薄膜在碱金属离子（K +或 Na +) 尽管阳离子无法穿透石墨烯并结合到 PB 中。石墨烯钝化不仅保留了 PB 的电化学活性，而且大大提高了 PB 的稳定性。作为概念验证，我们展示了覆盖 PB 的透明石墨烯电极可以用作出色的过氧化氢传感器，从而证明了实现能够长期测量的电化学传感器的可能性。
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