title: The synthesis of nitrogen/sulfur co-doped TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets and their enhanced visible-light photocatalytic performance.
abstract: Nitrogen/sulfur co-doped anatase TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets were synthesized by a solvent-thermal process followed by the calcination with thiourea at an optimum heat treatment temperature. Under current experimental conditions, the optimum heat treatment temperature was found at 300°C, which successfully introduced nitrogen and sulfur dopants into the anatase lattice to replace a small portion of oxygen atoms while preserving the geometry of these anatase TiO2 nanocrystals to maintain a high percentage of {001} facets. These nitrogen/sulfur co-doped anatase TiO2 nanocrystals demonstrated a largely enhanced light absorption in the whole visible-light range and exhibited much higher photocatalytic performance than both P25 TiO2 nanoparticles and anatase TiO2 nanocrystals with a high percentage of {001} facets under visible-light illumination.
authors.affiliation: Materials Center for Water Purification, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, People's Republic of China. qili@imr.ac.cn.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Shi
authors.forename: Weiyi
authors.initials: W
authors.lastname: Yang
authors.forename: Qi
authors.initials: Q
authors.lastname: Li
authors.forename: Shian
authors.initials: S
authors.lastname: Gao
authors.forename: Panju
authors.initials: P
authors.lastname: Shang
authors.forename: Jian Ku
authors.initials: JK
authors.lastname: Shang