Investigations into the surface chemistry of Arsenite with bifunctional metal oxides

本项目调查具有光氧化和吸附能力的金属氧化物在清除地下水来源中的砷，特别是As(III)方面的潜在应用。目前正在与介孔二氧化钛/氧化铁材料合作，该项目将使用能够预测一系列水条件下的吸附能力的模型来表征吸附过程。该项目还将表征双复合材料的光氧化性能，目的是通过带隙调节、光催化剂或合成程序的改变以及优化辐照装置来提高As(Iii)的氧化速率。将通过柱调查将吸附和光氧化结合起来，目的是设计一种能够有效地从真实地下水来源中去除As(Iii)的装置。

This project investigates the potential application of metal oxides with both photo-oxidation and adsorption capacities for the scavenging of arsenic, particularly As(III), from groundwater sources. Currently working with mesoporous TiO2/Fe2O3 materials, the project will see characterisation of the adsorption process performed with a model capable of predicting adsorption capacities under a range of water conditions developed. The project will also characterise the photo-oxidation performance of the bicomposite materials with the aim to enhance As(III) oxidation rates through band-gap tuning, changes in the photocatalyst or the synthetic procedure, and optimising the irradiation setup. Adsorption and photo-oxidation will be combined through column investigations with the aim of engineering a device capable of efficient As(III) removal from real groundwater sources.