Visible-light-driven catalytic degradation of ciprofloxacin on metal (Fe, Co, Ni) doped titanate nanotubes synthesized by one-pot approach

Abstract

In this work, Fe-series (Fe, Co, Ni) doped titanate nanotubes were synthesized via a simple, one pot hydrothermal process using commercial TiO 2 powder as the precursor. The samples were characterized by X-ray diffraction, nitrogen adsorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy, and UV-Vis. SEM and TEM results show that regularly uniform nanotubes were obtained and they possess homogeneous tubular structures with open ends. There is no significantly morphological and structural difference between TiNTs and Fe-series doped TiNTs. Furthermore, the photocatalytic properties of TiNTs and Fe-series doped TiNTs were studied using the degradation of ciprofloxacin. Fe-series doped TiNTs exhibit higher catalytic activities than those of TiNTs and commercial TiO 2 .

The Use of Ultra-Small Fe3O4 Magnetic Nanoparticles for Hydrothermal Synthesis of Fe3+-Doped Titanate Nanotubes

“…The methods of doping titanate nanotubes with ions depend on the specific application. The examples of ions that are often used are Fe 3+ [ 34 , 35 , 36 , 37 , 38 ], Co 2+ [ 39 , 40 , 41 ], Ni 2+ [ 39 ], Mn 2+ [ 42 ], Gd 3+ [ 43 ], Yb 3+ [ 44 ], Nd 3+ [ 44 ], Au 3+ [ 45 ], Pt 2+ [ 45 ]. They show how diverse the methods of doping TiO 2 nanotubes are.…”

Study of the Photocatalytic Properties of Ni-Doped Nanotubular Titanium Oxide

“…Titanium oxide is a photocatalyst that is used in solar energy harvesting in dye-sensitized solar cells and photocatalytic water splitting (PCWS). It is usually synthesized by the hydrolysis of titanium salt solutions [1,2], hydro or solvo-thermal techniques [3][4][5][6], chemical vapor deposition [7,8], and anodizing. The latter allows obtaining nanostructured oxide coatings with a large specific surface area on titanium [9][10][11][12][13][14][15][16][17][18], aluminum [19][20][21][22][23][24][25][26], and other metals and alloys [27][28][29].…”