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類銀鏡法高產(chǎn)量制備高穩(wěn)定納米銀
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國家自然科學(xué)基金資助（11074189）；上海市科委納米專項(xiàng)（11nm0501600）


Preparation of Silver Colloid Nanoparticles with High Stability and Concentrations on the Basis of Analogous Silver Mirror Reaction
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    摘要:

    以AgNO3為前軀體，葡萄糖為還原劑，十六烷基三甲基溴化銨（CTAB）為絡(luò)合劑和分散劑，一步法制備納米銀溶膠。利用紫外-可見光分光光度計(jì)（UV–Vis）、透射電子顯微鏡（TEM）和X射線衍射儀（XRD）對(duì)銀溶膠的形成、顆粒尺寸形貌、穩(wěn)定性和晶體結(jié)構(gòu)進(jìn)行了表征。結(jié)果表明，CTAB與Ag+和H+發(fā)生絡(luò)合反應(yīng)，穩(wěn)定了H+，促進(jìn)了葡萄糖對(duì)Ag+的還原；所制備銀納米粒子以球形為主，分散性良好，粒徑分布范圍為10~40 nm，銀濃度高達(dá)0.025 mol/L，室溫條件下能夠穩(wěn)定5個(gè)月以上。

    Abstract:

    Silver colloid nanoparticles, with high Ag+ concentration (up to 0.025 mol/L) and high stability (up to 5 months), have been synthesized via one step reduction of AgNO3 by glucose in the presence of cationic surfactant cetyltrimethylammonium bromide (CTAB). The reaction process, size distribution, morphology, and structure of particles have been characterized by UV/Visible absorption spectrophotometry, transmission electron microscopy (TEM) and X-ray diffractometer (XRD). Results indicate that CTAB accelerates the reaction between silver ions and glucose, because it stabilizes H+. TEM images show that silver sol consists of well-dispersed agglomerates of spherical nanoparticles with particle size from 10 to 40 nm.

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李秀妍,沈 軍,杜 艾,關(guān)大勇,張志華,周 斌,吳廣明,倪星元,高國華.類銀鏡法高產(chǎn)量制備高穩(wěn)定納米銀[J].稀有金屬材料與工程,2012,41(1):148~151.[Li Xiuyan, Shen Jun, Du Ai, Guan Dayong, Zhang Zhihua, Zhou Bin, Wu Guangming, Ni Xingyuan, Gao Guohua. Preparation of Silver Colloid Nanoparticles with High Stability and Concentrations on the Basis of Analogous Silver Mirror Reaction[J]. Rare Metal Materials and Engineering,2012,41(1):148~151.]
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  • 收稿日期:2011-01-19
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