Precisely Controlled Vertical Alignment in Mesostructured Carbon Thin Films for Efficient Electrochemical Sensing
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Lan, Kun
Lin, Runfeng
Jing, Xinxin
Hung, Chin-Te
Zhang, Xingmiao
Liu, Liangliang
Yang, Yi
Chen, Gang
Liu, Xiaoguo
Fan, Chunhai
El-Toni, Ahmed Mohamed
Khan, Aslam
Tang, Yun
Zhao, Dongyuan
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Abstract
Two-dimensional carbon materials, incorporating a large mesoporosity, are attracting considerable research interest in various fields such as catalysis, electrochemistry, and energy-related technologies owing to their integrated functionalities. However, their potential applications, which require favorable mass transport within mesopore channels, are constrained by the undesirable and finite mesostructural configurations due to the immense synthetic difficulties. Herein, we demonstrate an oriented monomicelle assembly strategy, for the facile fabrication of highly ordered mesoporous carbon thin films with vertically aligned and permeable mesopore channels. Such a facile and reproducible approach relies on the swelling and fusion effect of hydrophobic benzene homologues for directional monomicelle assembly. The orientation assembly process shows precise controllability and great universality, affording mesoporous carbon films with a cracking-free structure over a centimeter in size, highly tunable thicknesses (13 to 85 nm, an interval of ∼12 nm), mesopore size (8.4 to 13.5 nm), and switchable growth substrates. Owing to their large permeable mesopore channels, electrochemical sensors based on vertical mesoporous carbon films exhibit an ultralow limit of detection (50 nmol L-1) and great sensitivity in dopamine detection.
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ACS Nano
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This publication has been entered in Griffith Research Online as an advanced online version.
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Nanotechnology
2D carbon materials
electrochemical sensing
mesoporous materials
oriented assembly
vertical mesochannels
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Wang, R; Lan, K; Lin, R; Jing, X; Hung, C-T; Zhang, X; Liu, L; Yang, Y; Chen, G; Liu, X; Fan, C; El-Toni, AM; Khan, A; Tang, Y; Zhao, D, Precisely Controlled Vertical Alignment in Mesostructured Carbon Thin Films for Efficient Electrochemical Sensing, ACS Nano, 2021