A1 Journal article (refereed)
Preparation of tungstophosphoric acid/cerium-doped NH2-UiO-66 Z-scheme photocatalyst : a new candidate for green photo-oxidation of dibenzothiophene and quinoline using molecular oxygen as the oxidant (2021)

Fakhri, H., Esrafili, A., Farzadkia, M., Boukherroub, R., Srivastava, V., & Sillanpää, M. (2021). Preparation of tungstophosphoric acid/cerium-doped NH2-UiO-66 Z-scheme photocatalyst : a new candidate for green photo-oxidation of dibenzothiophene and quinoline using molecular oxygen as the oxidant. New Journal of Chemistry, 45(24), 10897-10906. https://doi.org/10.1039/D1NJ00328C

JYU authors or editors

Publication details

All authors or editors: Fakhri, Hanieh; Esrafili, Ali; Farzadkia, Mahdi; Boukherroub, Rabah; Srivastava, Varsha; Sillanpää, Mika

Journal or series: New Journal of Chemistry

ISSN: 1144-0546

eISSN: 1369-9261

Publication year: 2021

Volume: 45

Issue number: 24

Pages range: 10897-10906

Publisher: Royal Society of Chemistry (RSC)

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1039/D1NJ00328C

Publication open access: Not open

Publication channel open access:

Abstract

The goal of this study was to introduce an effective visible-light induced photocatalytic system with a good ability for photocatalytic oxidative desulfurization (PODS) and denitrogenation (PODN) using molecular oxygen (O2) as an oxidant. In this regard, tungestophosphoric acid (PW12) was supported onto cerium-doped NH2-UiO-66 (PW12/Ce-NUiO-66) and employed for the photo-oxidation of dibenzothiophene (DBT) and quinoline (Qu). Herein, using cerium (Ce) as a “mediator” facilitated the separation of charge carriers, while NH2-UiO-66 remarkably enhanced the surface area with plentiful adsorption sites and shifted the adsorption edge of PW12 to the visible region. The sum of these factors resulted in superior photocatalytic ability and maximum efficiency of 99 ± 1% was achieved by using 30PW12/Ce-NUiO-66 as the optimum photocatalyst in the PODN system and 89 ± 1% in the PODS system under visible light irradiation for 90 min. The traditional Z-scheme mechanism was proposed as the main pathway for this photocatalytic system.

Keywords: catalysis; catalysts; photochemistry; organometallic compounds; polymers; oxidation-reduction reaction; petrochemistry; green chemistry

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 1