Influence of Sn Doping on Phase Transformation and Crystallite Growth of TiO₂ Nanocrystals

Abstract

Sn doped TiO2nanocrystals were synthesized via a single-step hydrothermal method and the influences of Sn doping on TiO2have been investigated. It is found that Sn doping not only facilitates the crystal transfer from anatase to rutile but also facilitates the morphology change from sphere to rod. The states of Sn were studied by XPS and the creation of oxygen vacancies by Sn doping is confirmed. Moreover, the HRTEM results suggest that Sn facilitates preferential growth of resulting nanocrystals along (110) axis, which results in the formation of rod-like rutile nanocrystals.

Biotemplated synthesis of Au loaded Sn-doped TiO2 hierarchical nanorods using nanocrystalline cellulose and their applications in photocatalysis

“…Among them, Sn-doped TiO 2 (SDT) nanomaterials hold exciting implications for the phase transition and improving the stability of photocatalytic reaction. 16,17 But, how to enhance the photocatalytic effect of SDT remains a challenge. Recently, noble metal-TiO 2 heterostructure photocatalysts have attracted more attention owing to the localized surface plasmon resonance (LSPR) and the effective charge carrier separation by forming a Schottky barrier at the metal/TiO 2 interface.…”