Entirely nitrate-free synthesis of silver nanoparticles via electrochemical synthesis-chemical reduction

IF 5.8 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Nanoscale Pub Date : 2025-03-15 DOI:10.1039/d5nr00501a
Chenyi Zheng, Xueyi Guo, Songsong Wang, Qinmeng Wang, Qiang Wang
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引用次数: 0

Abstract

Among silver compounds, only silver nitrate (AgNO3) is readily soluble in water, which has led to the dominance of nitrate system in the chemical reduction (CR) method that utilize Ag compounds as feedstocks. During the synthesis of silver nanoparticles (Ag NPs) via the CR of AgNO3, nitrate wastewater and nitrogen oxide pollution are generated. The nitrate-related pollution has compromised the environmental advantages of the CR method for Ag NPs synthesis. In this study, we propose an electrochemical synthesis (ES)-CR method for the entirely nitrate-free synthesis of Ag NPs. In an eco-friendly acetate system, metallic silver is dissolved into the anolyte through anodic dissolution. An anion exchange membrane is employed to concentrate silver ion in the anolyte, while the cathode generates hydrogen gas. After ES, the anolyte serves as the precursor for the CR process. Ag NPs with diverse morphologies can be synthesized via CR. Unlike conventional AgNO3-based CR, the ES-CR method excludes the use of nitrate reagents. Furthermore, it streamlines the conversion of metallic Ag to Ag NPs. The proposed ES-CR method is expected to become an environmentally sustainable alternative method for the synthesis of Ag NPs.
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来源期刊
Nanoscale
Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
12.10
自引率
3.00%
发文量
1628
审稿时长
1.6 months
期刊介绍: Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.
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