Improved Photocatalytic Performance of Titanium Dioxide Nanoparticles in Visible Region via Graphene and Manganese Codoping

The novel visible light activated Mn‐Gr/TiO2 nanocomposite photocatalyst was synthesized hydrothermallyand utilized for organic pollutants abatement. Prefect abatement performance for methyl orange, an improvedphotocatalytic performance of 68%, has been observed. The crystallographic properties of photocatalyst wereinvestigated using XRD; the results showed prefect crystalline structure and suitable phase distribution and crystallitesize of 22.9 nm. The main structural phase was anatase. The morphology and size distribution of nanoparticles wasstudied via field emission scanning electron microscopy; narrow size distribution of nanoparticles was observed withaverage size of 46 nm. The FTIR spectroscopy indicated organophilic functional groups on Mn‐Gr/TiO2 nanocompositewhich enhances organic compound adsorption.

کلیدواژه ها:

photocatalyst ، hydrothermal ، TiO2 ، graphene