Facile Interpretation of Catalytic Reaction between Organic Dye Pollutants and Silver Nanoparticles with Different Shapes

Ja Young Cheon,Won Ho Park,Su Jun Kim

doi:10.1155/2019/3257892

Abstract

In this study, various shapes of silver nanoparticles (Ag NPs) were synthesized via simple methods in aqueous solution. The size and shape of Ag NPs were measured by TEM image and DLS, and the crystalline form of Ag NPs was confirmed by XRD. From ATR-IR and zeta potential, the Ag NPs were found to be well surrounded by PVP. In addition, the catalytic activity of Ag NPs was evaluated using model dyes. Unlike the conventional catalysts, the model dyes with absorption peaks that did not overlap with the SPR peaks of the Ag NPs were selected to evaluate the catalytic activity without removal of the Ag NPs from the dye solution.

Highlights

In recent years, metal nanoparticles (NPs) have received considerable attention because of their attractive properties and interesting applications [1,2,3]
The synthesized Ag NPs with different shapes were analyzed by UV-Vis spectroscopy (Figure 1)
When the size of Ag NPs dispersed in aqueous solution was measured via dynamic light scattering (DLS), the average particle sizes of Ag NSs, Ag NTs, and Ag NDs were 38.5 nm, 51.1 nm, and 50.6 nm, respectively

Summary

Introduction

Metal nanoparticles (NPs) have received considerable attention because of their attractive properties and interesting applications [1,2,3]. They are widely used in various fields including sensors, catalysts, functional materials for devices, and imaging [4,5,6,7,8,9,10,11]. Among the many organic pollutants, it is important to address the problem of organic dye contamination caused by the development of industries such as paper, fiber, plastic, and paint [17]. A variety of techniques has been used for the removal of contaminants such as adsorption, catalytic degradation, membrane filtrations, and chemical oxidation [19, 20]

Methods

Results

Conclusion