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Calcined ZnTi‐Layered Double Hydroxide Intercalated with H 3 PW 12 O 40 with Efficiently Photocatalytic and Adsorption Performances
Wastewater treatment is of great significance to environmental remediation. The exploration of efficient and stable methods for wastewater treatment is still a challenging issue. Herein, a heterojunction material with photocatalysis and adsorption properties has been designed to remove the complex p...
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Published in: | Chemistry : a European journal 2021-12, Vol.27 (67), p.16670-16681 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Wastewater treatment is of great significance to environmental remediation. The exploration of efficient and stable methods for wastewater treatment is still a challenging issue. Herein, a heterojunction material with photocatalysis and adsorption properties has been designed to remove the complex pollutants from wastewater. The heterojunction material (ZnO/TiO
2
−PW
12
, PW
12
=[PW
12
O
40
]
3−
) was synthesized by calcining the ZnTi−layered double hydroxide (ZnTi‐LDH) intercalated with the Keggin‐type polyoxometalate H
3
PW
12
O
40
. In the construction of ZnO/TiO
2
−PW
12
it was found that the polyanionic PW
12
remained unchanged in the process of forming the proposed heterojunction. The photochemical properties verify that heterojunction synergistic with PW
12
facilitated the separation of photoproduced electron‐hole pairs and thus suppressed the recombination. Therefore, ZnO/TiO
2
−PW
12
exhibits excellent photocatalytic property, and the efficiency of Cr(VI) photoreduction reached more than 90 % in the first 3 min. Furthermore, the electrostatic force between the PW
12
and cationic dyes makes ZnO/TiO
2
−PW
12
having an outstanding adsorption performance for cationic dyes, such as rhodamine B, crystal violet and methyl blue. Such heterojunction material combined with polyoxometalate puts forward new insights for the design of functional materials for water treatment with low cost and high efficiency. |
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ISSN: | 0947-6539 1521-3765 |
DOI: | 10.1002/chem.202102762 |