2022
DOI: 10.1039/d2ta02117j
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Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts

Abstract: Covalent triazine frameworks (CTFs) have shown wide applications in the fields of separation, catalysis, energy storage, and beyond. However, it is a long-term challenging subject to fabricate high-quality CTF materials...

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Cited by 6 publications
(11 citation statements)
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“…58 After that, Dai et al utilized CF 3 SO 3 H as an acid catalyst to form AB stacking CTF-1 firstly, and then a mechanochemistry-driven approach was employed to achieve crystalline CTFs assisted by alkaline molten salts. 59 Separately, Xu et al developed another H 6 P 4 O 13 -catalytic strategy to synthesize CTFs at a relatively high temperature (400 °C). 60 The developed CTFs exhibited ideal ordered structures, pore distribution, and large SSA.…”
Section: Ctf Synthesis Methodsmentioning
confidence: 99%
“…58 After that, Dai et al utilized CF 3 SO 3 H as an acid catalyst to form AB stacking CTF-1 firstly, and then a mechanochemistry-driven approach was employed to achieve crystalline CTFs assisted by alkaline molten salts. 59 Separately, Xu et al developed another H 6 P 4 O 13 -catalytic strategy to synthesize CTFs at a relatively high temperature (400 °C). 60 The developed CTFs exhibited ideal ordered structures, pore distribution, and large SSA.…”
Section: Ctf Synthesis Methodsmentioning
confidence: 99%
“…Abschließend wurde das thermische Verhalten des Materials mittels thermogravimetrischer Analyse [20,21] Dies zeigt sich auch in den unterschiedlichen dissoziativen Adsorptions-(E ads ) und Schicht-Wechselwirkungsenergien (E int ), die für die AA-Konformation E ads = À 106 kJ mol À 1 und E int = À 327 kJ mol À 1 betragen, und E ads = À 135 kJ mol À 1 and E int = À 322 kJ mol À 1 für die AB-Konformation. [21] Hohe Temperaturen über 350 °C oder das mechanochemische Verfahren mit KOH/LiOH können diese Wechselwirkung unterbinden, indem sie die dissoziative Adsorptionsenergien überschreiten und somit die Schichten in einen überlagerten Stapelmodus verschieben.…”
Section: Ergebnisse Und Diskussionunclassified
“…[21] Hohe Temperaturen über 350 °C oder das mechanochemische Verfahren mit KOH/LiOH können diese Wechselwirkung unterbinden, indem sie die dissoziative Adsorptionsenergien überschreiten und somit die Schichten in einen überlagerten Stapelmodus verschieben. [20,21] Daher nehmen wir an, dass ein Mindestmaß an mechanischer Kraft (� 10 Minuten Reaktionszeit oder � 25 Hz) erforderlich ist, um die Wechselwirkung zwischen dem sauren Katalysator und dem Triazinring zu trennen und die überlagerte AA-Konformation zu erhalten. Darüber hinaus ist bekannt, dass Kugelvermahlungen zur Exfoliation von 2D-Materialien verwendet wird.…”
Section: Ergebnisse Und Diskussionunclassified
“…Graphitic structures, characterized by their well-ordered atomic arrangement and layered nature, are typically formed under conditions that favor the establishment of covalent carbon−carbon bonds. 30 This ordered structure imparts exceptional thermal stability, mechanical strength, and conductivity, which could afford improved mass transfer channels and accelerate ORR kinetics. 31 Conversely, defective structures in carbon nanomaterials arise from disruptions in the graphitic plane lattice, often due to the incorporation of heteroatoms, vacancies, or dislocations.…”
Section: Introductionmentioning
confidence: 99%
“…In terms of carbon chemistry, the relationship between graphitic and defective structures is intricate and distinguished by contrasting attributes. Graphitic structures, characterized by their well-ordered atomic arrangement and layered nature, are typically formed under conditions that favor the establishment of covalent carbon–carbon bonds . This ordered structure imparts exceptional thermal stability, mechanical strength, and conductivity, which could afford improved mass transfer channels and accelerate ORR kinetics .…”
Section: Introductionmentioning
confidence: 99%