High surface area carbon nitride nanotubes for improved hydrogen storage: A grinding and solution mixing approach

被引：0

作者：

Arkhurst, Barton ^{[1
]}

Guo, Ruiran ^{[1
]}

Fan, Xinyue ^{[1
]}

Bahmanrokh, Ghazaleh ^{[1
]}

Oppong-Antwi, Louis ^{[1
,3
]}

Gunawan, Denny ^{[2
]}

Ashong, Andrews Nsiah ^{[1
]}

Chan, Sammy Lap Ip ^{[1
,4
]}

机构：

[1] School of Materials Science and Engineering, University of New South Wales, Sydney,NSW,2052, Australia

[2] Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney,NSW,2052, Australia

[3] CSIRO Manufacturing, Linfield, NSW,2070, Australia

[4] Department of Chemical and Materials Engineering, National Central University, Zhongli,320317, Taiwan

来源：

Materials Today Chemistry | 2025年 / 48卷

关键词：

Carbon capture - Carbon capture and storage - Carbon nanotubes - Cost effectiveness - Digital storage - Gas adsorption - Grinding (machining) - Hydrogen storage - Mixing - Morphology - Scanning electron microscopy - Transmission electron microscopy - X ray photoelectron spectroscopy - Yarn;

D O I：

10.1016/j.mtchem.2025.102930

中图分类号：

学科分类号：

摘要：

This study examines the structural, chemical, and hydrogen storage properties of graphitic carbon nitride (g-C3N4) nanotubes synthesized via a novel grinding-solution-synthesis (GSS) method which involve two consecutive precursor mixing processes: grinding and solution mixing. The impact of grinding duration on morphology, surface area, and hydrogen storage capacity was analyzed. X-ray diffraction (XRD) confirmed characteristic (100) and (002) peaks at ∼13.1° and 28.0°, respectively. Fourier-transform infrared (FTIR) spectroscopy identified tri-s-triazine heterocycles and hydrogen-bonded amino groups, with a new peak at 1650 cm−1 suggesting structural modifications. X-ray photoelectron spectroscopy (XPS) confirmed elemental composition with minor bonding variations. Nitrogen adsorption/desorption analyses showed that the 30-min ground sample (B1G30) had the highest specific surface area (321 m2 g-1) and pore volume (1.07 cm3/g), while prolonged grinding (60–90 min) caused nanotube degradation, reducing these properties. Scanning and transmission electron microscopy (SEM/TEM) confirmed nanotubular morphology, with decreasing diameters and increasing structural collapse at longer grinding durations. Hydrogen storage tests revealed B1G30 exhibited the highest capacity (0.81 wt% at 3.7 MPa), decreasing with extended grinding (B1G60: 0.79 wt%, B1G90: 0.75 wt%) due to structural collapse. Extrapolated data suggested B1G30 could reach ∼4.0 wt% at 10 MPa. These findings underscore the importance of nanotube integrity in optimizing hydrogen adsorption and highlight g-C3N4 nanotubes’ potential for hydrogen storage applications. This GSS technique presents a cost-effective method for industrial-scale fabrication of high-surface-area g-C3N4 nanotubes, enabling their large-scale use in energy storage, carbon capture, photocatalysis, and other applications. © 2025 The Authors

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