Abstract
Bimetallic nanoparticles (NPs) exhibit advantageous electrical, optical, and catalytic properties. Among the various NP synthesis methods, pulsed laser ablation in liquid (PLAL) is currently attracting much attention because of its simplicity and versatility. In this study, a pulsed laser was used to produce nickel/palladium (Ni/Pd) bimetallic NPs in methanol and deionized water. The morphological and optical properties of the resulting Ni/Pd bimetallic NPs were characterized. The synthesized Ni/Pd bimetallic NPs were used for the dechlorination of 1,2-dichlorobenzene (1,2-DCB) under various conditions. The dechlorination rates of 1,2-DCB while using single (Ni and Pd) and bimetallic (Ni powder/Pd and Ni/Pd) NPs were investigated. The results showed that the Ni/Pd bimetallic NPs with 19.16 wt.% Pd exhibited much enhanced degradation efficiency for 1,2-DCB (100% degradation after 30 min). Accordingly, the results of enhanced the degradation of 1,2-DCB provide plausible mechanism insights into the catalytic reaction.
Highlights
Global industrialization and the resulting continuous changes to environmental quality have caused serious water pollution problems
The results showed that the Ni/Pd bimetallic NPs with 19.16 wt.% Pd exhibited much enhanced degradation efficiency for
There is a desperate need for efficient 1,2-DCB dechlorination methods that are suitable for treating both industrial wastewater and contaminated groundwater
Summary
Global industrialization and the resulting continuous changes to environmental quality have caused serious water pollution problems. Chlorinated organic compounds (COCs), including alkyl and aryl chlorinated compounds, are widely used as raw materials, intermediates, and organic solvents in the chemical, agricultural and electronics industries [1,2]. COCs are toxic to humans and create health risks, such as birth defects, developmental impairment, infertile immune suppression, and cancer [3]. These COCs are environmentally persistent and they are challenging to directly degrade. Among the various COCs, 1,2-dichlorobenzenes (1,2-DCBs) are ubiquitously used and can be found in all major ecosystems [5]. There is a desperate need for efficient 1,2-DCB dechlorination methods that are suitable for treating both industrial wastewater and contaminated groundwater
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