1 research outputs found
Anchoring Tailored Low-Index Faceted BiOBr Nanoplates onto TiO<sub>2</sub> Nanorods to Enhance the Stability and Visible-Light-Driven Catalytic Activity
In this work, a fantastic
one-dimensional (1D) BiOBr/TiO<sub>2</sub> nanorod (NR) heterojunction
composite was rationally proposed and designed from the perspective
of molecular and interface engineering. The fabricated intimately
connected interfacial heterojunction between two-dimensional BiOBr
nanoplates and 1D TiO<sub>2</sub> NRs acts as an interfacial nanochannel
to promote efficient interfacial charge migration and separation of
photogenerated electron–hole pairs. As a result, 1D BiOBr/TiO<sub>2</sub> NR heterojunctions exhibited outstanding visible-light photocatalytic
activities and sustained cycling performance. Under visible-light
irradiation for 120 min, the reduction efficiency of CrÂ(VI) over the
TB-2 sample (molar ratio: <i>n</i>(Ti)/<i>n</i>(Bi) = 2:1) is as high as 95.4% without adding any scavengers. Furthermore,
the sample also shows excellent photodegradation activity of RhB with
a much higher apparent rate constant of 0.49 min<sup>–1</sup> and 88.5% total organic carbon removal ratio. Furthermore, the corresponding
mechanism of enhanced photocatalytic activity is proposed according
to comprehensively investigated results from photoluminescence spectroscopy,
photoelectrochemical measurement analysis, and radical trapping experiments.
This study provides an attractive avenue to design and fabricate highly
efficient 1D NR heterojunction photocatalysts, which possessed a high
application value in the field of environmental remediation, especially
for wastewater purification