Kim Tae-Ho, Jo Yong-Hyun, Adhikari Rajesh, Cho Sung-Hun
J Nanosci Nanotechnol. 2015 Sep;15(9):7125-9. doi: 10.1166/jnn.2015.10528.
This Paper reports the photocatalytic activity of g-C3N4/NaTaO3 hybrid composite photocatalysts synthesized by ball-mill method. The g-C3N4 and NaTaO3 were individually prepared by Solid state reaction and microwave hydrothermal process, respectively. The g-C3N4/NaTaO3 composite showed the enhanced photocatalytic activity for degradation of rhodamine B dye (Rh. B) under simulated solar light irradiation. The results revealed that the band-gap energy absorption edge of hybrid composite samples was shifted to a longer wavelength as compared to NaTaO3 and the 50 wt% g-C3N4/NaTaO3 hybrid composite exhibited the highest percentage (99.6%) of degradation of Rh. B and the highest reaction rate constant (0.013 min(-1)) in 4 h which could be attributed to the enhanced absorption of the hybrid composite photocatalyst in the UV-Vis region. Hence, these results suggest that the g-C3N4/NaTaO3 hybrid composite exhibits enhanced photocatalytic activity for the degradation of rhodamine B under simulated solar light irradiation in comparison to the commercial NaTaO3.
本文报道了通过球磨法合成的g-C3N4/NaTaO3杂化复合光催化剂的光催化活性。g-C3N4和NaTaO3分别通过固相反应和微波水热法单独制备。g-C3N4/NaTaO3复合材料在模拟太阳光照射下对罗丹明B染料（Rh.B）的降解表现出增强的光催化活性。结果表明，与NaTaO3相比，杂化复合样品的带隙能量吸收边缘向更长波长移动，50 wt%的g-C3N4/NaTaO3杂化复合材料在4小时内对Rh.B的降解率最高（99.6%），反应速率常数最高（0.013 min(-1)），这可归因于杂化复合光催化剂在紫外-可见区域的吸收增强。因此，这些结果表明，与市售NaTaO3相比，g-C3N4/NaTaO3杂化复合材料在模拟太阳光照射下对罗丹明B的降解表现出增强的光催化活性。
