Designing covalent organic frameworks with Co-O4 atomic sites for efficient CO2 photoreduction Article Open access 28 February 2023 Improving CO2 photoconversion with ionic liquid and Co single atoms Article Open access 16 March 2023 Data availability The data that support the plots within this ...
Covalent organic polymer nanoparticle-supported monolithic foams for separation of nitrotoluene isomers. ACS Appl. Nano Mater. 4, 10864–10876 (2021). Article CAS Google Scholar Tan, C., Lee, M. C., Arshadi, M., Azizi, M. & Abbaspourrad, A. A spiderweb-like metal–organic framework ...
Covalent-organic frameworks (COFs) represent a novel class of porous crystalline materials based on the atomically precise integration of organic building blocks into highly ordered and periodic 2D or 3D network structures [97]. However, the pore window sizes of COFs materials (typically 8.0–50 ...
Why must hydrocarbon compounds be covalently bonded rather than ionically bonded? Hydrocarbons must be covalently bonded because they contain only hydrogen and carbon, both nonmetallic elements. The only way nonmetallic elements will bond with each other is through covalent bonding. ...
Recently, various types of porous materials, including zeolites, metal-organic frameworks (MOFs), covalent-organic frameworks (COFs), organic polymers, and active carbons, have attracted increasing attention owing to their promising applications in catalysis, ionic exchange, and gas adsorption/separation ...
An atom forms a single covalent bond with another atom through the atoms sharing one valence electron pair. If the starting atom originally contains several valence electrons, then it can form multiple covalent bonds to different peripheral atoms. This is the basis for many simple covalent ...
aTotal current density of BNC-Cu and NC-Cu at different applied potentials.bIn situ DEMS data of BNC-Cu and NC-Cu. The total current densities (i), CO2ionic currents (m/z = 44) (ii), and CH4ionic currents (m/z = 15) (iii) for BNC-Cu and NC-Cu electrodes in CO2-sa...
Improved dispersion performance and interfacial compatibility of covalent-grafted MOFs in mixed-matrix membranes for gas separation. Green Chem. Eng. 2021, 2, 86–95. [Google Scholar] [CrossRef] Lu, J.; Zhang, X.; Xu, L.; Zhang, G.; Zheng, J.; Tong, Z.; Shen, C.; Meng, Q. ...
[Bi2O2]2+ has a strong covalent bond, which connects to the [X]− layer through the van der Waals force along the c-axis direction. Weak van der Waals forces and strong covalent bonds lead to the formation of layered structures. Xnp (n = 3, 4, and 5 corresponding to X = Cl,...
Researchers often introduce various methods to reduce agglomeration or improve the dispersion of fillers via the physical or chemical modification of the filler (e.g., priming, mechanical dispersion, covalent or non-covalent functionalization, dual fillers). However, each of these methods has its ...