Designed synthesis of perylene diimide-based supramolecular heterojunction with g-3N4@MIL125(Ti): insight into photocatalytic performance and mechanism
Article
Article Title | Designed synthesis of perylene diimide-based supramolecular heterojunction with g-3N4@MIL125(Ti): insight into photocatalytic performance and mechanism |
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ERA Journal ID | 1106 |
Article Category | Article |
Authors | Fakhri, Hanieh, Farzadkia, Mahdi, Srivastava, Varsha and Sillanpää, Mika |
Journal Title | Journal of Materials Science: Materials in Electronics |
Journal Citation | 32 (1), pp. 19-32 |
Number of Pages | 14 |
Year | 2021 |
Publisher | Springer |
Place of Publication | United States |
ISSN | 0957-4522 |
1573-482X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10854-020-04311-9 |
Web Address (URL) | https://link.springer.com/article/10.1007/s10854-020-04311-9 |
Abstract | A new supramolecular semiconductor perylene diimide (PDI)-functionalized g-C3N4@MIL-125(Ti) (is nominated as PC@MIL-125(Ti)) was prepared through in situ growth of MIL-125(Ti) on PDI-functionalized g-C3N4 (PC) sheets. This heterojunction was used for photodegradation of methyl orange (MO) pollutants under visible light illumination. This process was sensitive to the pH of solution, dosage of PC and the presence of the various scavengers. The 30PC@MIL-125(Ti) as optimum photocatalyst indicated synergistic effects on photodegradation of MO, where the maximum photocatalytic efficiency was obtained 100% under 90 min irradiation that was higher than pure PC and MIL-125(Ti). Herein, the PDI component acts as a powerful light harvester and improves absorption of visible light where PC@MIL-125(Ti) has a lower bandgap than g-C3N4@MIL-125(Ti). Moreover, proper contact between PDI and g-C3N4 sheets constructs the highway for easy and fast electron transfer that verified by photoluminescence analysis. The sum of these factors resulted in the superior photocatalytic ability of this heterojunction, where the TOC analysis confirmed 91% mineralization for MO. Besides, according to the results of LC-MASS analysis, the azo cleavage and dealkylation were main photodegradation pathways. By considering superior photocatalytic performance of this heterojunction, this work can be a guideline for the development of PDI-based supramolecular organic–inorganic photocatalyst. |
Keywords | Fast electron transfer; Perylenediimides; Photo-catalytic; Photocatalytic efficiency; Synergistic effect |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Iran University of Medical Sciences, Iran |
University of Jyvaskyla, Finland | |
Duy Tan University, Vietnam | |
School of Engineering |
https://research.usq.edu.au/item/zq4z9/designed-synthesis-of-perylene-diimide-based-supramolecular-heterojunction-with-g-3n4-mil125-ti-insight-into-photocatalytic-performance-and-mechanism
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