|
|
|
| Synthesis and characterization of TiO2 self-doped with biogenic nitrogen and phosphorus |
| 1.State Key Lab of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China; 2.National Engineering Research Center for Nanotechnology, Shanghai 200241, China) |
|
|
|
|
Abstract Soybeans and water-soluble titanium complexes are selected as biogenic nitrogen and phosphorus sources respectively to synthesize biogenic nitrogen and phosphorus selfdoped TiO2. X-ray diffraction and X-ray photoelectron spectroscopy are conducted to characterize the structure and composition of the samples, which show that they possess single anatase phase, and that nitrogen and phosphorus contained in original soybeans are selfdoped into the lattice. UV-Vis spectroscopy displays that N-P-doped TiO2 exhibits an enhanced absorption in the UV-Vis light range and red shift of the absorption edge, compared to undoped TiO2. Furthermore, degradation experiments of rhodamine 6G solution indicate superior photocatalytic activity of N-P-TiO2, of which the degradation rate is 1.4 times that of undoped TiO2. This work may pave a new pathway for synthesizing
the discarded biomass and other metal oxides selfdoped with biogenic nitrogen and phosphorus.
|
|
|
|
|
|
|
|
|
2011, Vol. 32 
