Sonochemical synthesis and characterization of lead iodide hydroxide micro/nanostructures

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• 作者：Farnosh Tavakoli ; Masoud Salavati-Niasari ; Fatemeh Moh ; es
• 关键词：Laurionite ; Nanostructures ; Ultrasonic method ; Surfactant
• 刊名：Ultrasonics Sonochemistry
• 出版年：2014
• 出版时间：January, 2014
• 年：2014
• 卷：21
• 期：1
• 页码：234-241
• 全文大小：2885 K

文摘

For the first time, micro/nano-sized lead iodide hydroxide; Pb(OH)I, has been successfully prepared via a simple ultrasonic method. In this method, lead nitrate and lithium iodide were applied as starting reagents to fabricate Pb(OH)I micro/nanostructures at different conditions. The effect of different surfactants like N,N-bis(salicylidene)-ethylenediamine (H₂salen), sodium dodecyl sulfate (SDS) and polyvinylpyrrolidone (PVP), sonication time, and ultrasonic intensity on the morphology and particle size of the products has been investigated. The as-produced micro/nanostructures were characterized with the aid of XRD, SEM, TEM, UV-vis, EDS and FT-IR. According to the SEM images, different morphologies of Pb(OH)I including micro- and nano-sized rods were formed by changing the preparation conditions. Based on the XRD results, it was found that Pb(OH)I and PbI₂ have been produced with and without sonication at the same conditions, respectively. The use of the H₂salen and sonication treatment were confirmed to be the crucial factors determining the formation of one-dimensional Pb(OH)I micro/nanostructures.