Article Title

Synthesis and facet-dependent photocatalytic activity of strontium titanate polyhedron nanocrystals

Authors

Junfang Li, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China
Hua Bai, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China
Wencai Yi, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
Jingyao Liu, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
Yahui Li, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China
Qing Zhang, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China
Haifeng Yang, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China
Guangcheng Xi, Nanomaterials and Nanoproducts Research Center, Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China

Keywords

polyhedron perovskite, strontium titanate, active faces, photocatalysis

Abstract

Cubic-perovskite (SrTiO3) has a great potential to be utilized in a wide range of applications. However, currently very little is known about the shape and facet effects of SrTiO3 on their physicochemical properties. This is largely owing to the difficulties in controlling the morphology of facets during synthesis. Herein, we describe a facile route for the facet- and size-controlled fabrication of singlecrystalline SrTiO3 triangular prisms with highly exposed {101} side faces and {111} end faces. Theoretical and experimental studies of their photocatalytic performance have shown that triangular prisms exhibit superior photocatalytic activities than nanocubes with exposed (001) faces for the degradation of organic contaminants, which may be primarily attributed to the much higher surface energy of {101} facets (2.97 J/m2) and {111} facets (2.80 J/m2) than of that of {001} facets (0.98 J/m2).

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-016-1048-3

Publisher

Tsinghua University Press

Recommended Citation

Junfang Li,Hua Bai,Wencai Yi,Jingyao Liu,Yahui Li,Qing Zhang,Haifeng Yang,Guangcheng Xi, Synthesis and facet-dependent photocatalytic activity of strontium titanate polyhedron nanocrystals. NanoRes.2016, 9(5): 1523–1531