A Facile Method for the Preparation of Colored Bi₄Ti₃O_12-x Nanosheets with Enhanced Visible-Light Photocatalytic Hydrogen Evolution Activity.

ABSTRACT: Bi₄Ti₃O_12−x nanosheet photocatalysts with abundant oxygen vacancies are fabricated by a facile solid-state chemical reduction method for the first time. This method is simple in operation, has short reaction time, and can be conducted at mild temperatures (300~400 °C). The electron paramagnetic resonance, thermogravimetric analysis, X-ray photoelectron spectrometer, and positron annihilation lifetime spectra results indicate that oxygen vacancies are produced in Bi₄Ti₃O_12−x, and they can be adjusted by tuning the reduction reaction conditions. Control experiments show that the reduction time and temperature have great influences on the photocatalytic activities of Bi₄Ti₃O_12−x. The optimal Bi₄Ti₃O_12−x<

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC5923591 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature