Issue 3, 2020

Promoting nitrogen photofixation over a periodic WS2@TiO2 nanoporous film

Abstract

Atmospheric nitrogen fixation using a photocatalytic system is a promising approach to produce ammonia. However, most of the recently explored photocatalysts for N2 fixation are in the powder form, suffering from agglomeration and difficulty in the collection and leading to unsatisfactory conversion efficiency. Developing efficient film catalysts for N2 photofixation under ambient conditions remains challenging. Herein, we report the efficient photofixation of N2 over a periodic WS2@TiO2 nanoporous film, which is fabricated through a facile method that combines anodization, E-beam evaporation, and chemical vapor deposition (CVD). Oxygen vacancies are introduced into TiO2 nanoporous films through Ar annealing treatment, which plays a vital role in N2 adsorption and activation. The periodic WS2@TiO2 nanoporous film with an optimized WS2 content shows highly efficient photocatalytic performance for N2 fixation with an NH3 evolution rate of 1.39 mmol g−1 h−1, representing one of the state-of-the-art catalysts.

Graphical abstract: Promoting nitrogen photofixation over a periodic WS2@TiO2 nanoporous film

Supplementary files

Article information

Article type
Communication
Submitted
20 nov. 2019
Accepted
21 déc. 2019
First published
23 déc. 2019

J. Mater. Chem. A, 2020,8, 1059-1065

Author version available

Promoting nitrogen photofixation over a periodic WS2@TiO2 nanoporous film

L. Shi, Z. Li, L. Ju, A. Carrasco-Pena, N. Orlovskaya, H. Zhou and Y. Yang, J. Mater. Chem. A, 2020, 8, 1059 DOI: 10.1039/C9TA12743G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements