Preparation of amine functionalized g-C3N4@H/SMOF NCs with visible light photocatalytic characteristic for 4-nitrophenol degradation from aqueous solution

Reza Abazari; Ali Reza Mahjoub; Ghazal Salehi

doi:10.1016/j.jhazmat.2018.11.087

Preparation of amine functionalized g-C₃N₄@^H/SMOF NCs with visible light photocatalytic characteristic for 4-nitrophenol degradation from aqueous solution

J Hazard Mater. 2019 Mar 5:365:921-931. doi: 10.1016/j.jhazmat.2018.11.087. Epub 2018 Nov 22.

Authors

Reza Abazari¹, Ali Reza Mahjoub², Ghazal Salehi³

Affiliations

¹ Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, 14115-175, Iran. Electronic address: r.abazari@modares.ac.ir.
² Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, 14115-175, Iran. Electronic address: mahjouba@modares.ac.ir.
³ Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, 14115-175, Iran.

PMID: 30497046
DOI: 10.1016/j.jhazmat.2018.11.087

Abstract

At ambience temperature, a facile and large-scale sonochemical synthesis route was used to synthesize graphitic carbon nitride@[Ti₄C₂₄H₃₉N₃O₂₉] metal-organic framework nanocomposites (g-C₃N₄-X@^YTi-MIL125-NH₂ NCs, where X and Y stood for the weight percentages of g - C₃N₄ and the synthesis method of Ti-MIL125-NH₂, respectively) having 2-Amino-1,4-benzenedicarboxylic acid (2-ATA) ligand with amine functional free groups. The obtained NCs were characterized by FT-IR, PXRD, FE-SEM, BET, UV-DRS, PL, EIS, and zeta potential. Moreover, g-C₃N₄-X@^YTi-MIL125-NH₂ capability to eliminate 4-nitrophenol (4-NP) contaminant from water via visible light illumination was explored. Our synthesized NCs under a facile, green ultrasonic technique (i.e. g-C₃N₄-30@^STi-MIL125-NH₂) had a higher percentage of degradation than those from hydrothermal technique (i.e. g-C₃N₄-30@^HTi-MIL125-NH₂) with degradation percentages of 75% and 57%, respectively, which resulted in effective mass transfer and separation of photo - generated charge carriers. Additionally, this higher percentage of degradation could be attributed to the larger surface area and unique morphology of the ultrasonically synthesized particles with higher homogeneity and better and non-agglomerated distribution. Furthermore, excellent reusability and stability were observed for g-C₃N₄-30@^STi-MIL125-NH₂. We also explored the role of some scavengers in the degradation procedures to investigate the effect of active species. The experimental results were used to describe the suggested mechanism capability for improved photocatalysis.

Keywords: 4-Nitrophenol; Metal-organic framework; Photocatalytic degradation; Sonochemistry; g-C(3)N(4)@Ti-MIL125-NH(2) NCs.

Publication types

Research Support, Non-U.S. Gov't