Giant Enhancement of Internal Electric Field Boosting Bulk Charge Separation for Photocatalysis

Jie Li; Lejuan Cai; Jian Shang; Ying Yu; Lizhi Zhang

doi:10.1002/adma.201600301

Giant Enhancement of Internal Electric Field Boosting Bulk Charge Separation for Photocatalysis

Adv Mater. 2016 Jun;28(21):4059-64. doi: 10.1002/adma.201600301. Epub 2016 Mar 22.

Authors

Jie Li^{1

2}, Lejuan Cai¹, Jian Shang¹, Ying Yu², Lizhi Zhang¹

Affiliations

¹ Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China.
² Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan, 430079, P. R. China.

PMID: 27001143
DOI: 10.1002/adma.201600301

Abstract

Incorporating carbon into Bi3 O4 Cl enhances its internal electric field by 126 times, which induces a bulk charge separation efficiency (ηbulk ) of 80%. This ultrahigh ηbulk value presents a state-of-the-art result in tuning the bulk charge separation. The generated C-doped Bi3 O4 Cl has a noble-metal- and electron-scavenger-free water-oxidation ability under visible light, which is difficult to achieve with most existing photocatalysts.

Keywords: bulk-charge separation; doping; internal electric field; photocatalysis; water oxidation.