Preparation of porous silver particles using ammonium formate and its formation mechanism

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 156; no. 2; pp. 459 - 464
• Main Authors: Won, Hyung Il, Nersisyan, Hayk, Won, Chang Whan, Lee, Jong-Min, Hwang, Jin-Soo
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 15.01.2010; Elsevier
• Subjects: Ammonium formate; Applied sciences; Chemical engineering; Exact sciences and technology; Macroporous silver; Reactors; Silver formate; Ammonium formate; Silver formate; Macroporous silver; Chemical reduction; Scanning electron microscopy; Preparation; X ray diffraction; Formation mechanism; Macroporosity
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2009.10.053

Here we report the preparation of two different types of macroporous silver particles (round and coral) by simple chemical reduction using ammonium formate. We also discuss the chemical mechanism of silver particle and macroporous silver particle formation. The synthesized round type and coral-type porous silver particles were 20–50 μm and 30–150 μm in size and their pores were 100–200 nm and 1–2 μm across, respectively. They were characterized by particle distribution analysis, X-ray diffraction, and scanning electron microscopy.