Solution-phase synthesis of CuO hierarchical …
Solution phase synthesis of CuO nanorods - ScienceDirect
where Co and Ce refer to the initial and final concentrations before and after filtration with CuO-TiO2 NSs, respectively, V is the volume (mL) and m is the weight of CuO-TiO2 NSs phase (g). Distribution coefficient values of all metal ions investigated in this study are reported in Table. It can be clearly observed from the Table that the greatest distribution coefficient value was obtained for Fe(III) with CuO-TiO2 (50546.392 mLg−1) as compared to pure TiO2 adsorbent (3557.885 mLg−1). As shown in Table, the amount of Fe(III) is almost extracted by CuO-TiO2 phase. In addition, minimal to no change in the selectivity is observed for both CuO-TiO2 and TiO2 adsorbents toward other metal ions included in this study. Results of selectivity study provided that the newly synthesized CuO-TiO2 phase is the most selective towards Fe(III) among all metal ions. The highest selectivity of CuO-TiO2 adsorbent toward Fe(III) can be attributed to additional incorporated oxygen atoms (donor) presented in CuO-TiO2 phase, as a result of modification of TiO2 with CuO. Thus, both incorporated oxygen donor atoms presented in TiO2 and CuO-TiO2 phases are able to selectively bind with Fe(III) through an electrostatic attraction or a chelating mechanism.
Solution-Phase Synthesis of Cu2O Nanocubes - Nano …
Prabakar, S., Bumby, C.W. and Tilley, R.D. Liquid-phase synthesis of flower-like and flake-like titanium disulfide nanostructures. Chem. Mater., 2009, 21, 1725-1730.
controlled one-step solution phase ..
AB - We report the synthesis of different Cu(OH)2 and CuO nanostructures (nanowires, rectangles, seedlike, beltlike, and sheetlike) in a solution phase with high yield at low cost by simple reduction of aqueous solution of copper nitrate (Cu(NO3)2 ) 0.2 M) with different alkaline solutions of sodium hydroxide (NaOH ) 0.1, 0.25, 0.50, 0.75, and 1.0 M). The morphology of the synthesized nanostructures is significantly influenced by the feeding concentration of alkaline NaOH solution. Cu(OH) 2 rectangles and nanowires can be readily obtained by the reduction of Cu(NO3)2 solution with different molar concentrations of NaOH solution and the synthesized nanomaterials get transformed into different nanostructures of CuO by subsequent heat treatment at 80 °C for half an hour. Well-defined rectangle-like structures of hydrated copper hydroxide Cu(OH)2H2O and different CuO nanostructures, such as seedlike, beltlike, and sheetlike, were synthesized by thermal dehydration of corresponding different shaped and sized Cu(OH)2 nanomaterials. The Raman spectra of different CuO nanomaterials obtained at different molar concentrations of NaOH (0.25, 0.50, 0.75, and 1 M) were recorded in the region 1050-1300 cm-1. A tentative mechanism has been given for the formation and transformation of different nanostructures.