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 performanceReportar como inadecuado




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 - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Nanoscale Research Letters

, 7:590

First Online: 24 October 2012Received: 13 September 2012Accepted: 11 October 2012

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.

KeywordsTiO2 nanocrystals Highly active {001} facets Nitrogen-sulfur co-doped Visible-light photocatalytic performance Electronic supplementary materialThe online version of this article doi:10.1186-1556-276X-7-590 contains supplementary material, which is available to authorized users.

Wenjing Shi, Weiyi Yang contributed equally to this work.

Download fulltext PDF



Autor: Wenjing Shi - Weiyi Yang - Qi Li - Shian Gao - Panju Shang - Jian Ku Shang

Fuente: https://link.springer.com/







Documentos relacionados