Fabrication of Lattice-Doped TiO2 Nanofibers by Vapor-Phase Growth for Visible Light-Driven N2 Conversion to Ammonia

Changshui Tian; Wenlong Sheng; Heng Tan; Hong Jiang; Chunrong Xiong

doi:10.1021/acsami.8b15174

Fabrication of Lattice-Doped TiO₂ Nanofibers by Vapor-Phase Growth for Visible Light-Driven N₂ Conversion to Ammonia

ACS Appl Mater Interfaces. 2018 Oct 31;10(43):37453-37460. doi: 10.1021/acsami.8b15174. Epub 2018 Oct 22.

Authors

Changshui Tian¹, Wenlong Sheng¹, Heng Tan¹, Hong Jiang¹, Chunrong Xiong¹

Affiliation

¹ State Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Lab of Hainan Province , Hainan University , Haikou 570228 , P. R. China.

PMID: 30345747
DOI: 10.1021/acsami.8b15174

Abstract

In the past decades, enormous efforts have been made to synthesize photocatalysts for N₂ conversion driven by visible light. However, it is still a major challenge to develop an efficient photocatalyst. In this paper, monodoped and codoped TiO₂ nanofibers were fabricated by vapor-phase growth. Vapor-phase implantation of the guest atoms into TiO₂ nanofibers may greatly prolong the lifetime of electron-hole pairs. The doped TiO₂ nanofibers were demonstrated to be an excellent photocatalyst for nitrogen photofixation under a 300 W Xe-lamp irradiation. The amount of ammonia produced over the Fe, V codoped TiO₂ nanofibers reached 14 783 μmol/L·g-cata after irradiation for 2 h. The strategy could be easily extended to prepare other species doped TiO₂ nanofibers as high-efficiency photocatalysts.

Keywords: N2 photofixation; TiO2 nanofibers; lattice doped; vapor-phase growth; visible light.