Exfoliating layered double hydroxides in formamide: a method to obtain positively charged nanosheets

Reversible hydration and aqueous exfoliation of the acetate-intercalated layered double hydroxide of Ni and Al: Observation of an ordered interstratified phase

“…On being dispersed in water, some LDHs, especially those containing carboxylate intercalates undergo swelling and eventual exfoliation/delamination [22][23][24]. Interest is emerging in the application of positively charged metal hydroxide nanosheets for devices [25,26]. However, delamination of LDHs in aqueous medium is a rare phenomenon and there are only a few reports to date [22][23][24].…”

Layer-by-Layer Fabrication of High-Performance Broadband Anti-reflection Coatings Comprising Oppositely Charged Nanosheets and Nanoparticles

“…The sharp basal reflections of LDH materials disappeared in this pattern, suggesting that the layer structure was collapsed. The appearance of amorphous-like halos at low 2θ angle can be attributed to the randomly aggregated nanosheets and the scattering of the glass substrate [17,18]. From a typical TEM image (Figure 4(b)), we observed that the thin sheet-like objects (tens of nanometers in lateral sizes) were morphologically irregular and dimensionally diminished, showing faint but homogeneous contrast, which indicated the breakage or fracture of sheets during the delimination process and reflected their ultrathin nature and uniform thickness [19].…”

Pyridine Carboxylate Complexes of MoII as Active Catalysts in Homogeneous and Heterogeneous Polymerization

“…[16,17] It is also possible, according to other reports, that the structure has partially disrupted owing to exfoliation, especially in material 8. [18] The FTIR spectrum of the HTC host material is similar to that of other materials of the same type. In the highfrequency region (4000-2000 cm -1 ), it is dominated by broad bands at about 3400 cm -1 , assigned to the O-H stretches of weakly hydrogen-bonded water molecules and layer hydroxy groups.…”