Synthesis Of Er³⁺-N-TiO₂/Er³⁺-F-TiO₂Nanophotocatalysts Loading On Activated Alumina And Its Photocatahtic Properties For Degradation Of Phenol Fluided-bed Under Visible Light

In this paper, new nano-photocatalysts have been synthesized by loading Er³⁺-N-TiO₂/Er³⁺-F-TiO₂on activated alumina via hydrothermal method. The degradation of phenol undervisible light in a flow bed system has been investigated. Immobilization of titanium dioxideon activated alumina can reduce the loss of photocatalyst powders and easy to recycle. At thesame time, it is a foundation for real application because the photocatalytic research on flowbed system can enlarge very easy. The main contents are as follows:1. Two novel Nano-photocatalysts have been synthesized by loading Er³⁺-N-TiO₂/Er³⁺-F-TiO₂on activated alumina via hydrothermal method.2. The structure and optical property of photocatalysts were characterized by SEM, XRD,UV-Vis, BET and ICP analysis.3. The photocatalytic degradation of phenol by Er³⁺-N-TiO₂loading on activatedalumina in flow bed system was investigated when150w ceramic metal halide lamp wasused as light source. The effects of synthesis condition and photocatalytic condition in flowbed system have been studied, including hydrothermal time, temperature, radiation time,particle size of supporter, calcination temperature, pH value, adding of H2O₂and speed ofliquid.4. The photocatalytic degradation of phenol by Er³⁺-F-TiO₂loading on activated aluminain flow bed system was investigated when a150w ceramic metal halide lamp was used aslight source. The influence of hydrothermal synthesis conditions, photocatalytic degradationconditions and ion doping on the photocatalytic activity of photocatalyst were discussed.