| 초록 |
Titanium dioxide (TiO2) is one of the well-known ceramic materials and widely used in many research fields because of its low cost, high oxidation-reduction performance and high photocatalytic activity. In this study, we synthesized metal-doped TiO2 nanobeads by hydrothermal treatment to enhance the photocatalytic effect of TiO2. Octadecylamine (ODA) had hydrophobic long-chain alkyl group and hydrophilic amino group. In the solution, hydrophobic groups tended to self-organize into micelles structure. Titanium tetraisopropoxide (TTIP) participated in hydrogen-bonding interactions with amino groups of ODA to form inorganic-organic composites. The kinds of doping metal were iron, vanadium and nickel. The photocatalytic effect was measured with the degree of methylene blue degradation. The XRD, SEM and TEM characterized the crystallinity and morphology of the metal-doped TiO2 nanobeads. We could confirm the surface area, pore volume and pore size of TiO2 nanobeads by BET analysis. |
