Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes

化学 碳纳米管 氧化还原 电解质 电化学 电子转移 纳米技术 富勒烯 化学工程 电极 无机化学 材料科学 光化学 物理化学 有机化学 工程类
作者
Jack W. Jordan,Beth Mortiboy,Andrei N. Khlobystov,Lee Johnson,Graham N. Newton,Darren A. Walsh
出处
期刊:Journal of the American Chemical Society [American Chemical Society]
卷期号:145 (16): 9052-9058 被引量:7
标识
DOI:10.1021/jacs.3c00554
摘要

Understanding ion transport in solid materials is crucial in the design of electrochemical devices. Of particular interest in recent years is the study of ion transport across 2-dimensional, atomically thin crystals. In this contribution, we describe the use of a host–guest hybrid redox material based on polyoxometalates (POMs) encapsulated within the internal cavities of single-walled carbon nanotubes (SWNTs) as a model system for exploring ion transport across atomically thin structures. The nanotube sidewall creates a barrier between the redox-active molecules and bulk electrolytes, which can be probed by addressing the redox states of the POMs electrochemically. The electrochemical properties of the {POM}@SWNT system are strongly linked to the nature of the cation in the supporting electrolyte. While acidic electrolytes facilitate rapid, exhaustive, reversible electron transfer and stability during redox cycling, alkaline-salt electrolytes significantly limit redox switching of the encapsulated species. By "plugging" the {POM}@SWNT material with C60-fullerenes, we demonstrate that the primary mode of charge balancing is proton transport through the graphenic lattice of the SWNT sidewalls. Kinetic analysis reveals little kinetic isotope effect on the standard heterogeneous electron transfer rate constant, suggesting that ion transport through the sidewalls is not rate-limiting in our system. The unique capacity of protons and deuterons to travel through graphenic layers unlocks the redox chemistry of nanoconfined redox materials, with significant implications for the use of carbon-coated materials in applications ranging from electrocatalysis to energy storage and beyond.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Ava应助时尚俊驰采纳,获得10
刚刚
余南发布了新的文献求助10
1秒前
2秒前
hanleiharry1发布了新的文献求助10
2秒前
段一帆发布了新的文献求助10
2秒前
充电宝应助mx采纳,获得10
2秒前
杰2580发布了新的文献求助10
3秒前
puff驳回了Ava应助
4秒前
5秒前
5秒前
阿牛哥发布了新的文献求助10
6秒前
香蕉觅云应助东晓采纳,获得10
7秒前
7秒前
姜磊完成签到,获得积分20
8秒前
8秒前
xxddw发布了新的文献求助10
9秒前
9秒前
谢海洋完成签到,获得积分10
10秒前
11秒前
loski发布了新的文献求助10
12秒前
13秒前
xueyu发布了新的文献求助10
14秒前
15秒前
lincy完成签到,获得积分10
16秒前
fqk完成签到,获得积分10
16秒前
17秒前
hanleiharry1发布了新的文献求助10
17秒前
17秒前
19秒前
乐乐应助WN采纳,获得10
21秒前
辛勤的刺猬完成签到 ,获得积分10
25秒前
神奇宝贝发布了新的文献求助10
25秒前
25秒前
丘比特应助sssyq采纳,获得10
26秒前
26秒前
芝麻福福完成签到,获得积分10
26秒前
FYm完成签到,获得积分10
27秒前
心灵美孤菱完成签到,获得积分10
27秒前
田様应助阳光怀亦采纳,获得50
28秒前
阿牛哥关注了科研通微信公众号
29秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989390
求助须知:如何正确求助?哪些是违规求助? 3531487
关于积分的说明 11254109
捐赠科研通 3270153
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809174