کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1275393 | 1497559 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures](/preview/png/1275393.png)
We report on the visible light-driven hydrogen production from splitting of water molecules by nitrogen-doped TiO2 (N-TiO2) with a rice grain-like nanostructure morphology. The N-TiO2 nanostructures are prepared using sol-gel and electrospinning methods followed by post-annealing of the composite nanofibers. The nanostructures are characterized by microscopy and spectroscopy. First order rate constants for the visible light-assisted photocatalysis in the degradation of methylene blue (MB) dye are found to be 0.2 × 10−3 and 1.8 × 10−3 min−1 for TiO2 and N-TiO2 (5 wt% of nitrogen), respectively. The N-TiO2 utilized in water splitting experiments and evaluated hydrogen (H2) of 28 and 2 μmol/h for N-TiO2 and TiO2, respectively. The improvement may be attributed due to the N-doping and higher surface area as ∼70 m2/g.
► N-doped TiO2 (N-TiO2) rice grain shapes are prepared by electrospinning and the resultant surface area of the rice grain shapes were about ∼70 m2/g.
► N-TiO2 rice grains show a reduced band gap and enhanced UV–vis photoactivity.
► Visible light-assisted photo degradation of the methylene blue is observed for N-TiO2.
► Enhanced photocatalytic hydrogen production and hydrogen efficiency are found and reported.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 10, May 2012, Pages 8897–8904