Fabrication of CdTe QDs/BiOI-Promoted TiO2 Hollow Microspheres with Superior Photocatalytic Performance Under Simulated Sunlight

• DOI: 10.1186/s11671-019-2878-1
• Publication Date: 2019-02-06T14:03:27Z
• Authors: Xiaofei Qu; Meihua Liu; Longfei Li; Chunqi Wang; Cuihua Zeng; Jianhuang Liu; Liang Shi; Fanglin Du
• Keywords: Photodegradation; Cadmium telluride photovoltaics; Nanochemistry; Visible spectrum

Hollow and heterostructured architectures are recognized as an effective approach to improve photocatalytic performance. In this work, ternary TiO2/CdTe/BiOI with hollow structure was constructed via a step-by-step method. addition, the effect of TiO2 structural regulation energy band alignment BiOI CdTe quantum dots (CdTe QDs) in on dye removal were also studied. The results reveal that heterostructures substrates exhibit much higher activities than pure TiO2, P25, TiO2/CdTe, TiO2/BiOI solid substrates. For TiO2(H)/CdTe/BiOI, several synergistic factors may be responsible for remarkable visible-light photodegradation performance, such strong absorption by larger specific surface area.