Nanodiamond decorated 2D hexagonal Fe2O3 nanosheets with a Z-scheme photogenerated electron transfer path for enhanced photocatalytic activity

Herein, a unique 0D/2D nanodiamonds (NDs)/hematite (Fe 2 O 3 ) composite photocatalyst was constructed by the solvothermal method and then was used to remove tetracycline pollutants in the aqueous solution, where the NDs nanoparticles were tightly anchored on the surface of hexagonal Fe 2 O 3 nanosh...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2021-04, Vol.56 (11), p.6663-6675
Main Authors: Pan, Jingjing, Guo, Feng, Sun, Haoran, Li, Mingyang, Zhu, Xiufeng, Gao, Lingling, Shi, Weilong
Format: Article
Language:English
Subjects:
Aqueous solutions
Catalytic activity
Characterization and Evaluation of Materials
Chemical Routes to Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Diamonds
Electromagnetic absorption
Electron transfer
Hematite
Heterojunctions
Heterostructures
Iron oxides
Materials Science
Nanoparticles
Nanosheets
Photocatalysis
Pollutants
Polymer Sciences
Reaction mechanisms
Solid Mechanics
Two dimensional composites
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Herein, a unique 0D/2D nanodiamonds (NDs)/hematite (Fe 2 O 3 ) composite photocatalyst was constructed by the solvothermal method and then was used to remove tetracycline pollutants in the aqueous solution, where the NDs nanoparticles were tightly anchored on the surface of hexagonal Fe 2 O 3 nanosheets. The superior photocatalytic performance (85%, 180 min) was obtained by the optimum 15-NDs/Fe 2 O 3 composite sample (containing 15 wt% NDs), which is approximately 4.13 times higher than that of pure Fe 2 O 3 . This is because the introduction of NDs nanoparticles not only promotes the visible-light absorption of Fe 2 O 3 , but also facilitates the separation of photogenerated electrons and holes in the interface of composite by the design of Z-scheme heterostructure. Besides, the intermediates, active species and reaction mechanism in the photocatalytic process were also discussed. This work enriches the knowledge in designing of novel 0D/2D Z-scheme heterojunction composites for photocatalysis.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-020-05700-5