Visual detection of peroxide-based explosives using novel mimetic Ag nanoparticle/ZnMOF nanocomposite

Nafiseh Bagheri; Alireza Khataee; Javad Hassanzadeh; Biuck Habibi

doi:10.1016/j.jhazmat.2018.08.013

Visual detection of peroxide-based explosives using novel mimetic Ag nanoparticle/ZnMOF nanocomposite

J Hazard Mater. 2018 Oct 15:360:233-242. doi: 10.1016/j.jhazmat.2018.08.013. Epub 2018 Aug 6.

Authors

Nafiseh Bagheri¹, Alireza Khataee², Javad Hassanzadeh³, Biuck Habibi⁴

Affiliations

¹ Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran.
² Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Institute of Environment, University of Tabriz, 51666-16471, Tabriz, Iran. Electronic address: a_khataee@tabrizu.ac.ir.
³ Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran.
⁴ Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran.

PMID: 30121353
DOI: 10.1016/j.jhazmat.2018.08.013

Abstract

A simple and selective colorimetric method for the detection of perilous peroxide explosives was developed using the peroxidase mimetic activity of silver nanoparticles/flake-like zinc metal-organic framework nanocomposite (Ag@ZnMOF). The synthesis of Ag@ZnMOF contained the formation of silver nanoparticles (AgNPs) inside the fine pores of Zn metal-organic framework (ZnMOF). High reactive AgNPs as well as great surface area of MOFs provided a synergetic and high improved catalytic activity for the composite which was studied as a peroxidase mimic in hydrogen peroxide (H₂O₂)-based oxidations. The achieved system was used for detection of Triacetone triperoxide (TATP) as one of the most hazardous peroxide explosives. TATP was decomposed in an acidic condition to generate H₂O₂, which was then applied to oxidize 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of the Ag@ZnMOF as a catalyst. This reaction led to the production of well-known blue colored charge transfer complex (oxTMB), which was recognized by the colorimetric technique. A linear relationship was obtained between the absorption intensity of the produced blue solution and the TATP concentration in the range of 0.4-15 mg L^-1, with a detection limit of 0.1 mg L^-1. A portable test kit was prepared using the same reagents for TATP measurement in real samples.

Keywords: Ag nanoparticles; MOF nanocomposites; Mimetic; Peroxide explosives; Triacetone triperoxide.