二氧化钛/石墨烯光催化降解草酸的研究

Photocatalytic Degradation of Oxalic Acid by TiO_2/Graphene Composite

摘要: 以钛酸四丁酯和氧化石墨烯为原料，采用水热法制备了二氧化钛/石墨烯(TiO_2/RGO)复合光催化剂，用XRD、TEM、UVVis DRS对光催化剂进行了表征. 研究了其在紫外光和模拟太阳光条件下对草酸的光催化降解性能，结果表明，与TiO_2相比，TiO_2/RGO在紫外光条件下，反应10 min后对草酸的光催化降解率增加了2.97%，这主要是因为石墨烯为TiO_2提供了电子转移场所，提高了电子-空穴的分离效率；而在模拟太阳光条件下，反应10 min后TiO_2/RGO对草酸的光催化降解率增加了9.05

Abstract: A TiO_2/Graphene (TiO_2/RGO) composite was synthesized by a hydrothermal method using graphite oxide and tetrabutyl. The crystal phase and morphology were characterized by Xray diffraction, transmission electron microscope, and UVVis diffuse reflectan