Anhui Key Laboratory of Livestock and Poultry Product Safety Engineering, Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Science, Hefei 230031
Abstract: TiO2 has attracted considerable attentions from researchers due to its advantages of non-toxicity, low cost, good chemical stability and easy modification of biological groups. However, TiO2 has disadvantages such as low utilization of solar visible light, and easy recombination of photogenerated electron-hole pairs, which greatly hampers its researches and potential utilities. In order to solve these problems, the method of constructing composite nanomaterials with narrow bandgap semiconductors, organic molecules, carbon materials and noble metals were applied to modify TiO2. This paper reviews the progress and present status of TiO2 photoelectrochemical sensors, and introduces the improvement of sensing performance of TiO2 photoelectrochemical sensors through modification of TiO2 nanomaterials. Finally, the advantages and disadvantages of TiO2 composite nanomaterials photoelectrochemical sensors are presented, and the future development trend of TiO2 photoelectrochemical sensors is prospected.
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