澳大利亚科廷大学Simone Ciampi团队基于静电学和电化学概述了摩擦带电绝缘子表面电荷转移反应的机理与范围。 相关研究成果发表在2021年2月18日出版的国际学术期刊《美国化学会杂志》。

接触时的表面带电现象是一个长期存在的科学难题，例如书面记载带电的琥珀吸引羽毛的样本可追溯到公元前600年。与受机械摩擦影响的电绝缘体相关的静电危害有很好的记录，而商业产品的设计，如复印机和激光打印机，都是基于电绝缘体的静电充电。尽管如此，这一现象的物理化学起源仍然存在争议。

该文概述了背后的接触带电机制，以及新兴的研究领域的电化学绝缘子最近的进展。研究首先证明如何利用绝缘表面上的静电，从而提高氧化还原反应性。这些研究有助于阐明摩擦带电机制，并为电化学发光、金属成核和无掩模光刻定义了新的平台。这一观点将有助于电化学、物理学、绿色能源、传感和材料领域的研究人员了解接触带电对各自领域的影响。特别关注了影响摩擦电化学反应的化学、电子和机械因素，并总结了该领域进一步发展所面临的挑战。

附：英文原文

Title: Electrostatics and Electrochemistry: Mechanism and Scope of Charge-Transfer Reactions on the Surface of Tribocharged Insulators

Author: Jinyang Zhang, Michelle L. Coote, Simone Ciampi

Issue&Volume: February 18, 2021

Abstract: The phenomenon of surface electrification upon contact is a long-standing scientific puzzle, with for instance written accounts of charged samples of amber attracting feathers dating back to the 600 B.C. Electrostatic hazards associated with electrical insulators subject to mechanical friction are well documented, and the design of commercial products, such as copiers and laser printers, is based on the static charging of electrical insulators. Nonetheless, the physical-chemical origin of this phenomenon remains debated. This Perspective outlines recent advances in our understanding of the mechanism behind contact electrification, as well as the emerging research area of electrochemistry on insulators. Research is beginning to demonstrate how to exploit static charges present on insulating surfaces, with the goal of driving redox reactivity. These studies have helped to clarify the triboelectrification mechanism and have defined new platforms for electrochemiluminescence, metal nucleation, and mask-free lithography. This Perspective will help researchers working within electrochemistry, physics, green energy, sensing, and materials to gain an understanding of the implications of contact electrification to their respective fields. Special attention is given to the chemical, electronic, and mechanical factors influencing triboelectrochemical reactions, concluding with the perceived challenges facing further development of this field.

DOI: 10.1021/jacs.0c11006

Source: https://pubs.acs.org/doi/10.1021/jacs.0c11006