CO 2 can bind to the MOF surface through either physisorption or chemisorption, where physisorption occurs through van der Waals interactions and chemisorption occurs through covalent bonds being formed between the CO 2 and MOF surface.
22.
Surfaces that undergo chemisorption generally result in more extensive reconstructions than those that undergo physisorption, as the breaking and formation of bonds between the surface atoms alter the interaction of the substrate atoms as well as the adsorbate.
23.
The exact nature of the bonding depends on the details of the species involved, but the adsorption process is generally classified as physisorption ( characteristic of weak van der Waals forces ) or chemisorption ( characteristic of covalent bonding ).
24.
Because the physisorption energy is so low for these types of materials, chemisorption is used to form covalent bonds between the polymer coating and the surface of the object ( such as a pan ) which holds it in place.
25.
Composition plays an important role in that it determines the form that the adsorption process takes, whether by relatively weak physisorption through van der Waals interactions or stronger chemisorption through the formation of chemical bonds between the substrate and adsorbate atoms.
26.
In this process, 1, 2-dichloroethane, vinyl chloride are used as inhibitors so as to prevent further oxidation of ethylene oxide to CO 2 and H 2 O . Here, the chemisorbed chlorine hinders dissociative chemisorption of atomic oxygen.
27.
Because the relative magnitudes of chemisorption processes are generally much greater than magnitudes of physisorption processes, this forms a strong bond between the polymer and the surface it is chemically adhered to, while allowing the polymer to retain its physisorption characteristics toward other materials.
28.
Also, fluid particles can be adsorbed on solid surfaces ( physisorption and chemisorption ), and the frustrated vibrational modes in adsorbates ( fluid particles ) is decayed by creating " e " "-" h + " pairs or phonons.
29.
In comparison with chemisorption, in which the electronic structure of bonding atoms or molecules is changed and covalent or ionic bonds form, physisorption, generally speaking, can only be observed in the environment of low temperature ( thermal energy at room temperature ~ 26 meV ) and the absence of the relatively strong chemisorptions.
30.
In comparison with chemisorption, in which the electronic structure of bonding atoms or molecules is changed and covalent or ionic bonds form, physisorption, generally speaking, can only be observed in the environment of low temperature ( thermal energy at room temperature ~ 26 meV ) and the absence of the relatively strong chemisorptions.
