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首页> 外文期刊>Materials science & engineering >Synthesis of silver nanoparticles in aqueous aminopolycarboxylic acid solutions via γ-irradiation and hydrogen reduction
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Synthesis of silver nanoparticles in aqueous aminopolycarboxylic acid solutions via γ-irradiation and hydrogen reduction

机译：γ辐照和氢还原在氨基聚羧酸水溶液中合成银纳米颗粒

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摘要

Formation of silver nanoparticles in the presence of various aminipolycarboxylic acids (APCAs) such as iminodiacetic acid (IDA), nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), N-(2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA), diethylenetriaminepentaacetic acid (DTPA), and N,N,N′, N″,N′″,N′″-triethylenetetraminehexaacetic acid (TTHA) was studied. Monodispersed silver nanoparticles capped by carboxylate groups of APCAs were prepared by the reduction of Ag~+ ions induced by either γ-radiolytic or H_2 reduction at room temperature. APCAs act as stabilizer to avoid the aggregation of silver nanoparticles. It has been shown that H_2-induced reduction of Ag~+ is possible at room temperature in the presence of APCAs. TTHA stabilized γ-reduced particles showed reactivity towards oxygen. The formed particles were characterized by UV-vis absorption, X-ray diffraction, zetasizer and transmission electron microscopy.
机译：在亚氨基二乙酸（IDA），次氮基三乙酸（NTA），乙二胺四乙酸（EDTA），N-（2-羟乙基）乙二胺三乙酸（HEDTA），二亚乙基三胺五乙酸（ DTPA）和N，N，N'，N''，N'''，N'''-三亚乙基四胺六乙酸（TTHA）进行了研究。通过在室温下还原由γ射线分解或H_2还原引起的Ag〜+离子，制备了由APCAs的羧基封端的单分散银纳米颗粒。 APCA作为稳定剂可避免银纳米颗粒的聚集。已经表明，在存在APCA的情况下，室温下H_2诱导的Ag〜+的还原是可能的。 TTHA稳定的γ还原颗粒对氧气具有反应活性。形成的颗粒通过紫外可见吸收，X射线衍射，Zetasizer和透射电子显微镜表征。

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