کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705311 | 1497294 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of highly efficient water splitting CoxNi1-xTa2O6 (x = 0-1) photocatalysts with high crystallinity and surface nanostructure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fabrication of highly efficient water splitting CoxNi1-xTa2O6 (x = 0-1) photocatalysts with high crystallinity and surface nanostructure Fabrication of highly efficient water splitting CoxNi1-xTa2O6 (x = 0-1) photocatalysts with high crystallinity and surface nanostructure](/preview/png/7705311.png)
چکیده انگلیسی
Porous CoxNi1-xTa2O6 mesoporous nanomaterials were synthesized through a sol-gel route using the spray-dried method. They had high photocatalytic activity for water splitting into H2 and O2 under visible light. The X-ray diffraction (XRD) patterns of CoxNi1-xTa2O6 revealed that Co atoms could displace Ni atoms in the NiTa2O6 bulk lattice to form a solid solution. A field emission scanning electron microscope (FE-SEM, JSM-6700F) image showed that the microspheres were constructed of irregular nanoparticles randomly stacked to form a mesoporous structure. UV-Vis diffuse reflection spectroscopy (DRS) was used to determinate the band gap changes of CoxNi1-xTa2O6 samples, which extended towards the visible light region. However, the photocatalytic activity did not have a linear relationship with the band gap, even when the effect of the s urface area was considered. The distortion index of the TaO6 octahedral lattice was found to be an important influencing factor, and Co0.8Ni0.2Ta2O6 showed high photocatalytic efficiency with a maximum of 1367 μmol hâ1 gâ1 for H2 yield, which made it a promising candidate for splitting water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 31, 2 August 2018, Pages 14319-14327
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 31, 2 August 2018, Pages 14319-14327
نویسندگان
Wei Jiang, Wei Li, Wenjuan Lu, Yanfeng Wang, Jie Sun, Simeng Shao, Pingping Zhang,