AUTHOR=Li Dongsheng , Zhu Bichen , Sun Zhongti , Liu Qinqin , Wang Lele , Tang Hua 

TITLE=Construction of UiO-66/Bi4O5Br2 Type-II Heterojunction to Boost Charge Transfer for Promoting Photocatalytic CO2 Reduction Performance

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.804204

DOI=10.3389/fchem.2021.804204

ISSN=2296-2646

ABSTRACT=One of the basic challenges of CO2 photoreduction is to develop efficient 
photocatalysts, and construction of heterostructure photocatalyst with intimate interface 
is an effective strategy to enhance interfacial charge transfer for realizing high 
photocatalytic activity. Herein, a novel UiO-66/Bi4O5Br2 heterostructure photocatalyst 
was constructed by depositing UiO-66 nanoparticles with octahedron morphology over 
the Bi4O5Br2 nanoflowers assembled from the Bi4O5Br2 nanosheets via an electrostatic 
self-assembly method. A tight contact interface and a built-in electric field were formed
between the UiO-66 and the Bi4O5Br2, which was conducive to the photo-electrons 
transfer from the Bi4O5Br2 to the UiO-66 and form a type-II heterojunction with highly
efficient of charge separation. As a result, the UiO-66/Bi4O5Br2 exhibited improved 
photocatalytic CO2 reduction performance with CO generation rate of 8.35 μmol h−1
g−1 without using any sacrificial agents or noble co-catalysts. This work illustrates an 
applicable tactic to develop potent photocatalysts for clean energy conversion.