Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites

Guoshi CUI; Hongying ZHAO; Congjun DANG; Xingjuan SHU

doi:10.11889/j.1000-3436.2018.rrj.36.020302

您当前的位置：

首页 >

文章列表页 >

Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites

RADIATION CHEMISTRY | 更新时间：2021-12-10

- Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites
- Journal of Radiation Research and Radiation Processing Vol. 36, Issue 2, (2018)
- 作者机构：
  
  1.河南科高辐射化工科技有限公司洛阳 471000
  2.河南省辐射化学新材料重点实验室洛阳 471000
- 作者简介：
- 基金信息：
- DOI：10.11889/j.1000-3436.2018.rrj.36.020302
  CLC：
扫描看全文
Guoshi CUI, Hongying ZHAO, Congjun DANG, et al. Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites. [J]. Journal of Radiation Research and Radiation Processing 36(2):020302-7(2018)
DOI：

Guoshi CUI, Hongying ZHAO, Congjun DANG, et al. Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites. [J]. Journal of Radiation Research and Radiation Processing 36(2):020302-7(2018) DOI： 10.11889/j.1000-3436.2018.rrj.36.020302.

摘要

以聚乙烯醇（PVA）作稳定剂，采用γ-射线液相辐射还原制备具有精细分形结构的树枝状纳米银枝晶，利用透射电子显微镜（TEM）、高分辨率的透射电镜（HRTEM）、选区电子衍射（SAED）、X射线衍射（XRD）对其形貌结构进行表征，探讨树枝状纳米银枝晶的合成条件和生长机理。结果表明，PVA浓度是形成纳米银枝晶的关键因素。对于硝酸银浓度0.02 mol/L、异丙醇浓度1.0 mol/L、吸收剂量75 kGy的反应体系，适宜的PVA浓度为2.5%~5.0%。纳米银颗粒浓度是控制纳米银枝晶形成的另一个主要因素。控制吸收剂量（30~75 kGy）和硝酸银浓度（0.02 mol/L）可以提供适宜的纳米银颗粒浓度。作为自由基清除剂的异丙醇，通过与PVA相互作用影响纳米银枝晶的生长。纳米银枝晶的自组装生长机理可以描述为“还原聚集成核并生长形成多面体近球形初级粒子，初级粒子聚集融合形成孪晶、雪花状晶粒等次级粒子，次级粒子继续与初级粒子聚集融合形成树枝状纳米银枝晶”3个步骤。

Abstract

Silver nanodendrites of fine fractal structure were prepared under γ-ray liquid-phase irradiation with polyvinyl alcohol (PVA) as stabilizer. The morphology of the structure was characterized by Transmission electron microscope, High-resolution transmission electron microscope, Selective electron diffraction, and X-ray diffraction. The synthesis conditions and growth mechanism of the silver nanodendrites were studied. The results showed that PVA concentration was a key factor influencing the formation of the silver nanodendrites. In a reaction system with concentration of AgNO3, isopropanol at 0.02 mol/L and 1.0 mol/L, respectively, and absorbed dose of 75 kGy, the suitable concentration of PVA was between 2.5% and 5.0%. The silver nanoparticle concentration was another major factor affecting the formation of the silver nanodendrites. A suitable concentration of silver nanoparticles could be obtained with the concentration of silver nitrate at 0.02 mol/L and the absorbed dose between 30 kGy and 75 kGy. As a free radical scavenger, isopropanol affected the growth of the silver nanodendrites by interacting with PVA. The self-assembly growth mechanism of the silver nanodendrites could be described in three steps. Firstly, silver ions aggregated, nucleated, and grew to form polyhedral near-spherical primary particles. Secondly, the primary particles aggregated to form secondary particles such as twins and snowflake-like grains. Finally, the secondary particles aggregated with the primary particles to form silver nanodendrites.

关键词

纳米银枝晶辐射还原生长机理

Keywords

Silver nanodendriteIrradiation reductionGrowth mechanism

references

张宏艳 , 王艳丽 , 于秀华 . 微波辐射快速制备聚合物基纳米银复合材料 . 辐射研究与辐射工艺学报 , 2015 . 33 (3 ):030302 DOI:10.11889/j.1000-3436.2015.rrj.33.030302http://doi.org/10.11889/j.1000-3436.2015.rrj.33.030302 http://www.j.sinap.ac.cn/fushe/CN/abstract/abstract251.shtmlhttp://www.j.sinap.ac.cn/fushe/CN/abstract/abstract251.shtml, .

Hongyan ZHANG , Yanli WANG , Xiuhua YU . Rapid preparation of polymer-nanoparticle composites of silver by microwave radiation . Journal of Radiation Research and Radiation Processing , 2015 . 33 (3 ):030302 DOI:10.11889/j.1000-3436.2015.rrj.33.030302http://doi.org/10.11889/j.1000-3436.2015.rrj.33.030302 http://www.j.sinap.ac.cn/fushe/CN/abstract/abstract251.shtmlhttp://www.j.sinap.ac.cn/fushe/CN/abstract/abstract251.shtml, .

J H Zhang , H Y Liu , P Zhan , 等 . Controlling the growth and assembly of silver nanoprisms . Advanced Functional Materials , 2007 . 17 (9 ):1558 -1566 . DOI:10.1002/(ISSN)1616-3028http://doi.org/10.1002/(ISSN)1616-3028.

J Bregado-Gutiérrez , A J Saldívar-García , H F López . Synthesis of silver nanocrystals by a modied polyol method . Journal of Applied Polymer Science , 2008 . 107 (1 ):45 -53 . DOI:10.1002/(ISSN)1097-4628http://doi.org/10.1002/(ISSN)1097-4628.

林敬东 , 杨振威 , 钟怀国 . 银纳米粒子的形貌可调控研究 . 化学研究与应用 , 2007 . 19 (2 ):169 -171 . http://d.old.wanfangdata.com.cn/Periodical/hxyjyyy200702009http://d.old.wanfangdata.com.cn/Periodical/hxyjyyy200702009, .

Jingdong LIN , Zhenwei YANG , Huaiguo ZHONG . The studies on the morphology controllable of silver nanoparticles . Chemical Research and Application , 2007 . 19 (2 ):169 -171 . http://d.old.wanfangdata.com.cn/Periodical/hxyjyyy200702009http://d.old.wanfangdata.com.cn/Periodical/hxyjyyy200702009, .

M Pattabi , K M Rao , S R Sainkar , 等 . Structural studies on silver cluster films depoisited on softened PVP substrates . Thin Solid Films , 1999 . 338 (1-2 ):40 -45 . DOI:10.1016/S0040-6090(98)00970-5http://doi.org/10.1016/S0040-6090(98)00970-5.

L M Qi , Y Y Gao , J M Ma . Synthesis of ribbons of silver nanoparticles in lamellar liquid crystals . Colloids and Surfaces A:Physicochemical and Engineering Aspects , 1999 . 157 (1-3 ):285 -294 . https://www.sciencedirect.com/science/article/pii/S0927775799000539https://www.sciencedirect.com/science/article/pii/S0927775799000539, .

J W Bai , Y Qin , C Y Jiang , 等 . Polymer-controlled synthesis of silver nanobelts and hierarchical nanocolumns . Chemistry of Materials , 2007 . 19 (14 ):3367 DOI:10.1021/cm0707861http://doi.org/10.1021/cm0707861.

廖学红 , 朱俊杰 , 赵小宁 , 等 . 纳米银的电化学合成 . 高等学校化学学报 , 2002 . 21 (12 ):1837 -1839 . DOI:10.3321/j.issn:0251-0790http://doi.org/10.3321/j.issn:0251-0790 .

Xuehong LIAO , Junjie ZHU , Xiaoning ZHAO , 等 . Electrochemical synthesis of nano silver . Chemical Journal of Chinese Universities , 2002 . 21 (12 ):1837 -1839 . DOI:10.3321/j.issn:0251-0790http://doi.org/10.3321/j.issn:0251-0790 .

熊金钰 , 徐国财 , 吉小利 , 等 . 纳米银的超声合成及分形研究 . 安徽理工大学学报(自然科学版) , 2004 . 24 (3 ):69 -72 . DOI:10.3969/j.issn.1672-1098http://doi.org/10.3969/j.issn.1672-1098 .

Jinyu XIONG , Guocai XU , Xiaoli JI , 等 . The study on the ultrasonic synthesis and fractal of nano silver . Journal of Anhui University of Science and Technology (Natural Science) , 2004 . 24 (3 ):69 -72 . DOI:10.3969/j.issn.1672-1098http://doi.org/10.3969/j.issn.1672-1098 .

G D Wei , C W Nan , Y Deng , 等 . Self-organized synthesis of silver chain like and dendritic nanostructures via a solvothermal method . Chemistry of Materials , 2003 . 15 (23 ):4436 -4441 . DOI:10.1021/cm034628vhttp://doi.org/10.1021/cm034628v.

崔国士 , 赵红英 , 沈新元 . 液相辐射还原过程中纳米银颗粒的形貌与尺寸控制 . 辐射研究与辐射工艺学报 , 2010 . 28 (1 ):29 -36. .

Guoshi CUI , Hongying ZHAO , Xinyuan SHEN . Control of morphology and size of nano-silver particles in the liquid irradiation reduction process . Journal of Radiation Research and Radiation Processing , 2010 . 28 (1 ):29 -36. .

梁蒙蒙 , 梁莹 , 方斌 . 银粉的辐射清洁制备 . 辐射研究与辐射工艺学报 , 2017 . 35 (3 ):030301 DOI:10.11889/j.1000-3436.2017.rrj.35.030301http://doi.org/10.11889/j.1000-3436.2017.rrj.35.030301 http://www.j.sinap.ac.cn/fushe/CN/abstract/abstract397.shtmlhttp://www.j.sinap.ac.cn/fushe/CN/abstract/abstract397.shtml, .

Mengmeng LIANG , Ying LIANG , Bin FANG . Environmentally friendly preparation of silver powder via irradiation . Journal of Radiation Research and Radiation Processing , 2017 . 35 (3 ):030301 DOI:10.11889/j.1000-3436.2017.rrj.35.030301http://doi.org/10.11889/j.1000-3436.2017.rrj.35.030301 http://www.j.sinap.ac.cn/fushe/CN/abstract/abstract397.shtmlhttp://www.j.sinap.ac.cn/fushe/CN/abstract/abstract397.shtml, .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Control of morphology and size of nano-silver particles in the liquid irradiation reduction process

Related Author

No data

Related Institution

State Key Laboratory for Modification of Chemical Fiber and Polymer Materials, College of Material Science and Engineering, Donghua University

Key laboratory of radiation modification membrane materials, Henan academy of sciences

⁰