One step integration of plasmonic Ag2CrO4/Ag/AgCl into HKUST-1-MOF as novel visible-light driven photocatalyst for highly efficient degradation of mixture dyes pollutants: Its photocatalytic mechanism and modeling. (1st July 2019)

• Record Type: Journal Article
• Authors: Jalali, S.; Rahimi, M.R.; Dashtian, K.; Ghaedi, M.; Mosleh, S.
• Is Part Of: Polyhedron. Volume 166(2019)
• Page Start: 217
• Page End: 225
• Publication Date: 2019-07-01
• Subjects: Metal–organic framework -- Ag2CrO4/AgCl/Ag -- Z-scheme photocatalyst -- Amido black -- Orange G; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2019.03.045
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Ag2 CrO4 -AgCl/Ag nanoparticles and metal–organic framework (HKUST-1) were effectively coupled via an in situ hydrothermal growth strategy to form a plasmonic Z-scheme photocatalyst for the photocatalytic degradation of binary mixture of amido-black (AB) and orange G (OG) dyes under UV–Vis light irradiation. Abstract: Ag2 CrO4 -AgCl/Ag nanoparticles and metal–organic framework (HKUST-1) were effectively coupled via an in situ hydrothermal growth strategy to form a plasmonic Z-scheme photocatalyst for the photocatalytic degradation of binary mixture of amido-black (AB) and orange G (OG) dyes under UV–Vis light irradiation. This was done to take advantage of the high AB and OG adsorption capacity of the HKUST-1 MOF and the photocatalytic properties of pre-formed Ag2 CrO4 /AgCl/Ag nanoparticles in a single material. The Ag2 CrO4 -Ag-AgCl-HKUST-1 plasmonic Z-Scheme photocatalyst was characterized by XRD, SEM, FE-SEM, EDS and PL, UV–Vis diffuse reflectance spectroscopy. On the basis of photocatalytic activity and band structure analysis, two-step plasmonic Z-scheme electron transfer and one-step direct interspecies electron transfer were proposed for this composite. The Z-scheme electron transfer was caused due to the localized surface plasmon resonance of metallic Ag nanoparticles as well as the band gap photoexcitation of Ag2 CrO4 /AgCl and direct interspecies electron transporters can be attributed to the presence of HKUST-1 MOF, which not only acted as hole transporters for suppressing the photogenerated carrier recombination, but also played as a sensitizer for enhancing visible light absorption.