Abstract
The large specific surface area of the tubular hollow structure of TiO2 nanotubes provides a large number of active sites for the adsorption/catalytic reaction. With the development of the synthesis technology of nanomaterials, loading inorganic, metal and other nanoparticles on the surface of TiO2 nanotubes has become a hot research topic in the nanomaterials field. In this paper, Cu2ZnSnS4(CZTS)/TiO2 nanotube arrays composite structure was successfully prepared by one-step hydrothermal synthesis method, and the effects of different precursor concentration on the properties of the composite structure were systematically studied. The results showed that the CZTS/TiO2 nanotubes composite sample by one-step hydrothermal synthesis achieve the highest photocurrent density which is 7 μA·cm-2 . In addition, when the precursor solution concentration was 0.25 mmol, the sample acquired the highest photocurrent density
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