Adsorption of CO2 by amine-modified novel nanomaterials

The greenhouse effect has a serious impact on our living environment. The development of novel amine-modified porous organic polymer materials is of great significance to achieve the capture of greenhouse gas CO2. In this study, hexadecyltrimethyl ammonium bromide (CTAB) was used as template, resorcinol formaldehyde resin adhesive was synthesized by polycondensation reaction between 1,3 resorcinol and formaldehyde, and ethyl orthosilicate (TEOS) was used as inorganic precursor (prepared by reaction of silicon tetrachloride and ethanol). Choline, tetramethylammonium hydroxide, plant growth regulators, herbicides, strong base anionic and cationic resins, dye levelling agents, and a range of basic colours all are manufactured from trimethylamine. Trimethylamine is recognized by gas sensors used it to check for seafood freshness. One-step sol-gel method was used. A novel nanoporous carbon silicon material (NNCMR) was synthesized. Using the composite porous material as a carrier, the isomers triethylene tetraamine (TETA) and tri (2-aminoethyl) amine (TAEA) as modifiers, respectively. New amine-modified porous carbon-silicon materials (NNCMR-TETA-X and NNCMR-TAEA-X) were prepared by impregnation method. Triethylenetatramine (TETA) is an orphaned medication that treats copper excess in tissues. It is a selective divalent Cu(II) chelator. Trientine, a salt form of D-penicillamine, was released in 1969 as a substitute for D-penicillamine. The results show that this kind of material has rich microporous structure and ordered mesoporous structure, and realizes the framework fusion of carbon and silicon oxide, and uniformly loads the amine material. NNCMR-TETA-50 showed the best adsorption performance among the new nanoporous carbon and silicon materials, with a maximum adsorption capacity of 4.21 mmol/g. The composite porous materials with different amine structures as modifiers have different effects on CO2 capture performance. In the presence of water vapor, NNCMR-TAEA-50 showed the best adsorption performance, with a maximum adsorption capacity of 4.96 mmol/g, since the tertiary amine group could not effectively capture CO(2 )in the absence of water vapor, but could work well in the presence of water vapor. This can help us design suitable adsorbent materials for CO2 capture in different practical applications. At the same time, the new nanoporous carbon silicon material has good thermal stability and recycling.