Preparation and photocatalytic activity of BiOBr/TiO<Subscript>2</Subscript> heterojunction nanocomposites     

谭欣  李香利  于涛  赵阳 《天津大学学报(英文版)》2016,22(3):211-217

An efficient visible-light-responsive BiOBr/TiO₂ heterojunction nanocomposite was fabricated successfully using in-situ depositing technique at room temperature by introducing BiOBr onto the surface of TiO₂ nanobelts pre-prepared by hydrothermal reaction and etched with H₂SO₄. The obtained particles were characterized by XRD, SEM, TEM, XPS, UV-Vis DRS and PL techniques. BiOBr/TiO₂ heterojunction nanocomposites with different mass ratios of m(BiOBr)/m(TiO₂) were discussed in order to get the best photocatalytic activity, and BiOBr/TiO₂-1.0 was proved to be the optimal mass ratio. BiOBr/TiO₂-1.0 exhibited excellent photocatalytic activity in the degradation of RhB compared with TiO₂ nanobelts, pure BiOBr and the mechanical mixture of TiO₂ nanobelts and BiOBr. At last, a possible mechanism of photocatalytic enhancement was proposed.  相似文献   

电子白板与“6+2”教学模式的融合应用研究——以高中化学教学为例     

韩淑芬  张群生  李香利 《数字教育》2019,(5):72-75

新课改倡导“自主、合作、探究”的学习方式,我校结合教学实际提出“6+2”教学模式,其中“6”是指六步教学法,即“导、读、教、练、点、评”;“2”是指课堂的主旋律,即“激情+个性”。本文举例分析了电子白板在“6+2”教学模式中的应用,探讨了二者有机融合的方式方法。  相似文献