Hydrogen and CO2 storage in high surface area covalent triazine–based frameworks

Hierarchical Metal–Organic Aerogel as a Highly Selective and Sustainable CO2 Adsorbent

“…On the other hand, precise fitting with the dual-site Langmuir model suggests that all of the HMOAs possess two distinct CO 2 adsorption sites on the surface. The σ bonding of Cr(III)− Cr(III) in the paddle-wheel structure can provide an attractive CO 2 adsorption site, whereas the ligand connected to Cr(III), such as the nitrile functional group of TCNQ, 70 can also serve as another CO 2 adsorption site by applying the principle of Lewis acid and base. 71 ■ CONCLUSIONS Several unique features of HMOA were revealed from the comprehensive analyses.…”

Graphitic Aza‐Fused π‐Conjugated Networks: Construction, Engineering, and Task‐Specific Applications

“…Several papers have reviewed the applications of 2D nanomaterials, [2,3,6,14,15] conjugated networks, [4,7,12,16,17] porous organic polymers (POPs), [5,13,[18][19][20][21][22] hypercrosslinked porous polymer (HCPs), [23] porous aromatic frameworks (PAFs), [24] and carbonaceous materials, [25,26] in which CTFs are involved as a subclass material, and specific fields deploying CTFs-related systems, [9,11,27] such as separation [28][29][30][31] and catalysis, [10,[32][33][34] while systematic summarization and comparison of graphitic aza-fused π-conjugated networks including and beyond CTFs have rarely been covered. Considering the blossom of the material category related to graphitic aza-fused π-conjugated networks, it is highly required to figure out the pivotal factors in structure-property-application relationship from diverse levels, which will provide guidance in monomer design and synthesis pathway selection to achieve far-reaching applications.…”

“…[95] In CO 2 adsorption behavior study, an uptake capacity of 4.98 mmol g −1 was obtained (273 K, 1 bar), and the Q st was calculated to be in the range of 25.9-30.7 kJ mol −1 (entry 17). By introducing extra CO 2 -philic groups such as pyridine, imidazole, triazole, porphyrin, and fluorine into the aromatic nitriles monomers, the CTFs derived from triazine units formation demonstrated good performance in CO 2 uptake (Table 1, entries 18-26), [29,58,96,114,119,[132][133][134][135] with Tz-df-CTF-600 displaying the highest CO 2 uptake capacity (7.65 mmol g −1 ) at 273 K and 1 bar (Table 1, entry 26). [135] The CQNs derived from the polymerization of DATPN in molten ZnCl 2 was featured by promising surface areas (up to 1870 m 2 g −1 ), incorporation of micropores (0.9-1.1 nm), and high nitrogen content (up to 24 wt%), making them promising candidates in CO 2 capture.…”

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

“…2,4,[6][7][8] The merits of CTFs have been leveraged towards diverse applications in the eld of adsorption, gas uptake, thermo/electro/photocatalysis, and energy storage. 3,[9][10][11][12][13][14][15][16][17] There are mainly three approaches capable of constructing CTF skeletons via the triazine unit formation. Pathway I is the classical and most widely used ionothermal procedure promoted by ZnCl 2 with aromatic nitriles as the starting materials, affording CTFs via the trimerization of cyano groups.…”

“…2,4,6–8 The merits of CTFs have been leveraged towards diverse applications in the field of adsorption, gas uptake, thermo/electro/photocatalysis, and energy storage. 3,9–17…”