文章信息/Info

Title:

Preparation of Copper Nano Particles from Copper Ammonia Waste Water by Liquid Reduction Method in Ultrasonic Field

作者:

巨佳1; 2; 閆晨3; 印邵勝1; 2; 許永祥1; 2; 楊柳1; 2; 陳愛華3

1.南京工程學(xué)院材料工程學(xué)院，江蘇 南京 211167 ?2.江蘇省先進(jìn)結(jié)構(gòu)材料與應(yīng)用技術(shù)重點(diǎn)實(shí)驗(yàn)室，江蘇 南京 211167 ?3.中天合金技術(shù)有限公司，江蘇 南通 226010

Author(s):

JU Jia1; 2; YAN Chen3; YIN Shaosheng1; 2; XU Yongxiang1; 2; YANG Liu1; 2 ; CHEN Aihua3

1.School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, China ?2.Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing 211167, China ?3.Zhongtian Alloy Technology Co., Ltd., Nantong 226010, China

關(guān)鍵詞:

超聲波; 銅氨廢液; 水合肼; 液相還原; 納米銅粉

Keywords:

ultrasonic waves;  copper ammonia waste water;  hydrazine hydrate;  liquid reduction method;  copper nano particles

DOI:

10.7502/j.issn.1674-3962.2018.03.08

文獻(xiàn)標(biāo)志碼:

A

摘要:

在超聲波場(chǎng)條件下，以電子工業(yè)產(chǎn)生的銅氨廢液為原料、水合肼為還原劑、聚乙烯吡咯烷酮為表面活性劑還原制備納米銅粉。研究了該體系下溫度、pH值、表面活性劑添加量和超聲波場(chǎng)等因素對(duì)制備納米銅粉的形貌和粒徑的影響。通過試驗(yàn)探索得到最佳反應(yīng)溫度為：72 ℃；pH值：9.0~10.0；表面活性劑添加量為：0.2 mol·L-1。此外，在超聲波場(chǎng)條件下制備的產(chǎn)物粒徑小于無(wú)超聲波場(chǎng)條件下的產(chǎn)物。制備的產(chǎn)物通過X射線衍射(XRD)、掃描電鏡(SEM)表征，結(jié)果表明產(chǎn)物為純度很高的銅粉，粒徑達(dá)到納米級(jí)別，形貌呈球形。在最佳工藝條件下，廢液中銅離子的轉(zhuǎn)化率達(dá)到97%以上，試驗(yàn)反應(yīng)產(chǎn)物為氮?dú)�，沒有引入新的金屬離子，反應(yīng)前后體系成份未變，可以濃縮后返回車間做銅板堿性蝕刻液使用，實(shí)現(xiàn)了綠色環(huán)保要求

Abstract:

The copper nano�瞤articles were prepared in ultrasonic field by using the copper�瞐mmonia waste water as the starting material and hydrazine hydrate as reducing agent, as well as polyvinyl pyrrolidone as surfactant. In this paper, the influence of temperature, pH value and the amount of surfactant on particle size and morphology of copper nano�瞤articles were studied. The optimum reaction condition was the temperature about 72 ℃, pH among 9.0~10.0 and the amount of surfactant 0.2 mol·L-1. Meanwhile, the copper nano�瞤articles in ultrasonic field appeared smaller than usual. The prepared copper nano�瞤articles were characterized by XRD and SEM. The results showed that the product was pure copper powder, which had spherical morphology with nanoscale size. Under the optimum technological condition, the conversion ratio of copper ion in copper�瞐mmonia waste water was more than 97% and the reaction product was nitrogen. After reaction, the reaction system composition had no variation compared with original liquid, due to no new metal ions being added during the reaction. The waste water after reaction can be returned to workshop as new alkaline etching liquor and green environmental protection realizes.