Synthesis of metallic zinc nanoparticles by electrolysis
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ORIGINAL ARTICLE
Synthesis of metallic zinc nanoparticles by electrolysis Ayumi Yoshida1 · Noriko Yamauchi1 · Kouichi Nakashima1 · Ken‑ichi Watanabe2 · Hidekazu Koda2 · Hiroshi Kunigami2 · Hideki Kunigami2 · Yoshio Kobayashi1 Received: 2 March 2020 / Accepted: 24 July 2020 © King Abdulaziz City for Science and Technology 2020
Abstract The present work proposes a method for fabricating metallic zinc (Zn) nanoparticles in aqueous solution. An aqueous colloidal solution of metallic Zn nanoparticles was prepared from Zn acetate by electrolysis under ultrasonic irradiation in water. Transmission electron microscopy and X-ray diffractometry revealed that metallic Zn nanoparticles with a crystal structure of hexagonal and a particle size of ca. 130 nm were produced using carbon bars as electrodes. However, the carbon that peeled off with the ultrasonic irradiation was included in the nanoparticles. High-purity metallic Zn nanoparticles with sizes of 30–90 nm could be fabricated using metallic Zn plates as the electrodes. The metallic Zn nanoparticles were chemically stable in both aqueous solution and the atmosphere. The chemically-stable metallic Zn nanoparticles are expected to be applied to catalyst, fabrication of alloy nanoparticles composed of Zn and other metals, anti-rust paint, etc. Keywords Zinc · Nanoparticle · Aqueous colloidal solution · Electrolysis · Ultrasonic irradiation
Introduction It is widely known that nanoparticles of metallic materials exhibit properties different from those of their bulk material. Therefore, metallic nanoparticles are applied in fields concerned with catalysts and as materials for electronic devices and sensors (Wang et al. 2017; Zhou et al. 2018; Fathi et al. 2019). For metallic zinc (Zn) nanoparticles, studies on materials such as composites composed of Zn and other materials and alloy nanoparticles composed of Zn and other metals have been performed to determine their application potentials such as catalysis and antibacterial efficacy (Velichkina et al. 2008; Miura et al. 2009; Gawish et al. 2012). In addition to the potentials, a Zn-rich paint by addition of metallic
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13204-020-01524-6) contains supplementary material, which is available to authorized users. * Yoshio Kobayashi [email protected] 1
Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, 4‑12‑1 Naka‑narusawa‑cho, Hitachi, Ibaraki 316‑8511, Japan
Shinko Kagaku Kogyosho Co., Ltd, 1544‑19 Mashimori, Koshigaya, Saitama 343‑0012, Japan
2
Zn nanoparticles has been also proposed as another application (Schaefer and Miszczyk 2013). A liquid phase process is one method for producing metallic nanoparticles. Most of the process is based on the reduction of metal ions in the liquid phase. Since, a large amount of metallic nanoparticles can be easily produced by this process, the process is suitable for industrial production. Metallic Zn na
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