银和纳米银的大气腐蚀

V. Keast
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引用次数: 6

摘要

尽管银是一种贵金属,但它在周围的大气中会被腐蚀,主要是通过与硫化氢(H2S)和羰基硫化物(OCS)等含硫气体反应形成硫化银(Ag2S)刺长岩。环境的其他方面,如相对湿度和氧化物质的存在,也起着关键作用。随着银纳米颗粒在一系列技术和医学应用中的出现,人们对这种重要金属的腐蚀行为重新产生了兴趣。本文回顾了目前对银在体积和纳米颗粒形式下的大气腐蚀的理解。确定了我们目前的理解和未来调查领域的差距。
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Atmospheric Corrosion of Silver and Silver Nanoparticles
Even though it is a noble metal, silver will corrode in ambient atmospheres, predominantly by reacting with sulfur-containing gases such as hydrogen sulfide (H2S) and carbonyl sulfide (OCS) to form the silver sulfide (Ag2S) acanthite. Other aspects of the environment, such as relative humidity and the presence of oxidizing species, also play a critical role. With the emergence of silver nanoparticles for a range of technological and medical applications, there has been a revival of interest in the corrosion behavior of this important metal. This article reviews the current understanding of the atmospheric corrosion of silver in both the bulk and nanoparticle forms. Gaps in our current understanding and areas for future investigation are identified.
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