Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts

Juntian Fan; Xian Suo; Tao Wang; Zongyu Wang; Chi Linh Do-Thanh; Shannon M. Mahurin; Takeshi Kobayashi; Zhenzhen Yang; Sheng Dai

doi:10.1039/d2ta02117j

Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts

Juntian Fan, Xian Suo, Tao Wang, Zongyu Wang, Chi Linh Do-Thanh, Shannon M. Mahurin, Takeshi Kobayashi, Zhenzhen Yang, Sheng Dai

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

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 via facile procedures. Herein, a mechanochemistry-driven procedure was developed to achieve phase transformation of crystalline CTFs assisted by alkaline molten salts. The transformation of CTF-1 from staggered AB to eclipsed AA stacking mode was achieved by short time (30 min) mechanochemical treatment in the presence of molten salts composed of LiOH/KOH, generating high-quality CTF-1 material with high crystallinity, high surface area (625 m² g⁻¹), and permanent/ordered porosity without carbonization under ambient conditions. This facile procedure could be extended to provide nanoporous three-dimensional CTF materials.

Original language	English
Pages (from-to)	14310-14315
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	10
Issue number	27
DOIs	https://doi.org/10.1039/d2ta02117j
State	Published - Jun 24 2022

Funding

The research was supported financially by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy. Work at the Ames Laboratory (solid-state NMR) was supported by the Department of Energy-Basic Energy Sciences under Contract No. DE-AC02-07CH11358.

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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 via facile procedures. Herein, a mechanochemistry-driven procedure was developed to achieve phase transformation of crystalline CTFs assisted by alkaline molten salts. The transformation of CTF-1 from staggered AB to eclipsed AA stacking mode was achieved by short time (30 min) mechanochemical treatment in the presence of molten salts composed of LiOH/KOH, generating high-quality CTF-1 material with high crystallinity, high surface area (625 m2 g−1), and permanent/ordered porosity without carbonization under ambient conditions. This facile procedure could be extended to provide nanoporous three-dimensional CTF materials.",

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AU - Fan, Juntian

AU - Suo, Xian

AU - Wang, Tao

AU - Wang, Zongyu

AU - Do-Thanh, Chi Linh

AU - Mahurin, Shannon M.

AU - Kobayashi, Takeshi

AU - Yang, Zhenzhen

AU - Dai, Sheng

PY - 2022/6/24

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AB - 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 via facile procedures. Herein, a mechanochemistry-driven procedure was developed to achieve phase transformation of crystalline CTFs assisted by alkaline molten salts. The transformation of CTF-1 from staggered AB to eclipsed AA stacking mode was achieved by short time (30 min) mechanochemical treatment in the presence of molten salts composed of LiOH/KOH, generating high-quality CTF-1 material with high crystallinity, high surface area (625 m2 g−1), and permanent/ordered porosity without carbonization under ambient conditions. This facile procedure could be extended to provide nanoporous three-dimensional CTF materials.

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Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts

Abstract

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