A1 Journal article (refereed)
Designed synthesis of perylene diimide-based supramolecular heterojunction with g-C3N4@MIL-125(Ti) : insight into photocatalytic performance and mechanism (2021)


Fakhri, H., Farzadkia, M., Srivastava, V., & Sillanpää, M. (2021). Designed synthesis of perylene diimide-based supramolecular heterojunction with g-C3N4@MIL-125(Ti) : insight into photocatalytic performance and mechanism. Journal of Materials Science: Materials in Electronics, 32(1), 19-32. https://doi.org/10.1007/s10854-020-04311-9


JYU authors or editors


Publication details

All authors or editorsFakhri, Hanieh; Farzadkia, Mahdi; Srivastava, Varsha; Sillanpää, Mika

Journal or seriesJournal of Materials Science: Materials in Electronics

ISSN0957-4522

eISSN1573-482X

Publication year2021

Publication date04/01/2021

Volume32

Issue number1

Pages range19-32

PublisherSpringer

Publication countryUnited Kingdom

Publication languageEnglish

DOIhttps://doi.org/10.1007/s10854-020-04311-9

Publication open accessNot open

Publication channel open access


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.


Keywordscoordination complexesorganometallic compoundssupramolecular chemistrycatalystsphotochemistryphotocatalysisenvironmental chemistrywaste water treatmentharmful substances


Contributing organizations


Ministry reportingYes

Reporting Year2021

JUFO rating1


Last updated on 2024-10-03 at 20:07