Facile Fabrication of a Novel Copper Nanozyme for Efficient Dye Degradation

Abstract

In this study, a novel copper nanozyme (CNZ) was synthesized by a mild way and characterized by scanning electron microscopy and Fourier transform infrared spectroscopy (FTIR). The as-fabricated CNZ exhibited typical peroxidase activity toward 2, 2′-azinodi-(3-ethylbenzthiazoline)-6-sulfonate. We successfully applied CNZ for the degradation of methyl orange pollutants. Under the optimum conditions (pH, 3.0; T, 60 °C; H2O2 concentration, 200 mM; dosage of CNZ, 8 mg), 93% of the degradation rate could be obtained in less than 10 min. Furthermore, the nanozyme exhibited excellent reusability and storage stability. All these experimental results suggested that CNZ is a powerful catalyst for industrial wastewater treatment.

Recent advances in the applications of nanozymes for the efficient detection/removal of organic pollutants: a review

“…The results showed that when the temperature increased from 20 °C to 60 °C, the activity of the CNZ nanozyme improved correspondingly. 143 Similarly, Wang et al found that 100 °C was optimal for the degradation and detection of phenolic pollutants by a CH-Cu nanozyme. 139 5.3.…”

“…They found that CNZ with excellent reusability and storage stability could well-degrade methyl orange with a degradation rate of about 93%. 143…”

“…They found that CNZ with excellent reusability and storage stability could well-degrade methyl orange with a degradation rate of about 93%. 143 Several nanozymes can simultaneously detect and remove organic pollutants owing to their unique structures. 124,144,145 For example, Boruah et al utilized Fe 3 O 4 nanoparticle-decorated functionalized rGO sheet (FDG) nanozymes for the detection and degradation of harmful triazine pesticides.…”

Application of Nanozymes in Environmental Monitoring, Management, and Protection

“…Methyl orange is a typical dye in industrial wastewater selected as a typical dye pollutant because it is not easily degraded. CNZ was applied to the degradation of methyl orange pollutants [ 160 ]. At a high temperature of 60 °C and pH value of 3.93%, the degradation rate can be obtained in less than 10 minutes.…”

Perspective for Single Atom Nanozymes Based Sensors: Advanced Materials, Sensing Mechanism, Selectivity Regulation, and Applications

“…Thanks to the rapid development of nanotechnology, many nanomaterials with enzyme-like activities have been constructed. These nanomaterials include nanosheets, , metal–organic frameworks, , superparamagnetic nanoarchitectures, two-dimensional metal azolate framework nanosheets, layered double hydroxides, noble metal nanoparticles, transition metal oxides, − transition metal sulfides, carbon-based nanomaterials, − and so on. Since the concept of nanomaterials was proposed, there have been hundreds of groups conducting research and development on nanomaterials and confirmed their enzyme-like activities.…”