Innovative nano-layered solid sorbents for CO₂capture

Abstract

Nano-layered sorbents for CO(2) capture, for the first time, were developed using layer-by-layer nanoassembly. A CO(2)-adsorbing polymer and a strong polyelectrolyte were alternately immobilized within porous particles. The developed sorbents had fast CO(2) adsorption and desorption properties and their CO(2) capture capacity increased with increasing nano-layers of the CO(2)-adsorbing polymer.

Nickel Ferrite Nanoparticles Anchored onto Silica Nanofibers for Designing Magnetic and Flexible Nanofibrous Membranes

“…[5][6][7][8] Up to date, several methods have been invented to fabricate magnetic SNM, such as hydrothermal route, template-assisted process, chemical vapour deposition, and structure-selective synthesis. [9][10][11][12][13] However, previous efforts focused excessively on the morphology and porous structure of SNM, ignoring the brittle feature and poor mechanical properties of the relevant SNM. [14][15][16][17][18] Flexibility that was possessed for membranes with silica-derived sheet or cage nanostructures has not been realized in membranes solely based on silica nanofibers.…”

Simultaneous characterization of physical, chemical, and thermal properties of polymeric multilayers using infrared spectroscopic ellipsometry

“…Fourier-transform surface Plasmon Resonance (FT-SPR), Quartz Crystal Microbalance with Dissipation (QCM-D), Variable-Angle Spectroscopic Ellipsometry, Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) have been widely used to evaluate film growth, physical characteristics, morphology, thickness, and roughness [14][15][16]. Other techniques such as UV-VIS spectroscopy, Circular Dichroism Spectrometry, and Zeta Potential Analyzer, have been used to study the formation of multilayers [17][18][19][20][21]. Film chemistry has been evaluated by techniques such as Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS) and Polarization Modulation Infra-Red Reflection Absorption Spectroscopy (PM-IRRAS) [14][15][16][22].…”

Performance of amine-multilayered solid sorbents for CO2 removal: Effect of fabrication variables

“…We recently piloted the development of solid sorbents using layer-by-layer (LbL) nanoassembly (Li et al, 2011), which is a unique technique for manufacture of composite nanofilms. LbL nanoassembly has been extensively studied to develop a variety of highly-selective and multifunctional multilayer films based on the alternate deposition of oppositely-charged polyelectrolytes on a substrate surface including metal, silicone, glass, and inorganic/organic colloid (Decher, 1997).…”