纳米银枝晶的液相辐射还原与自组装生长机理

崔国士; 赵红英; 党从军; 束兴娟

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

您当前的位置：

首页 >

文章列表页 >

纳米银枝晶的液相辐射还原与自组装生长机理

辐射化学 | 更新时间：2021-12-10

- 纳米银枝晶的液相辐射还原与自组装生长机理
- Liquid-phase irradiation reduction and self-assembly growth mechanism of silver nanodendrites
- 辐射研究与辐射工艺学报 2018年36卷第2期
- 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：
  
  [ "崔国士, 男, 1964年9月出生, 2010年于东华大学材料科学与工程学院获博士学位, 研究员, E-mail:cuiguoshi2008@126.com", "CUI Guoshi (male) was born in September 1964, and received his doctoral degree from the College of Material Science and Engineering, Donghua University in 2010, professor, E-mail: cuiguoshi2008@126.com" ]
- 基金信息：
- DOI：10.11889/j.1000-3436.2018.rrj.36.020302
  中图分类号：
扫描看全文
崔国士, 赵红英, 党从军, 等. 纳米银枝晶的液相辐射还原与自组装生长机理[J]. 辐射研究与辐射工艺学报, 2018,36(2):020302-7.

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, 2018,36(2):020302-7.
崔国士, 赵红英, 党从军, 等. 纳米银枝晶的液相辐射还原与自组装生长机理[J]. 辐射研究与辐射工艺学报, 2018,36(2):020302-7. DOI： 10.11889/j.1000-3436.2018.rrj.36.020302.

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, 2018,36(2):020302-7. 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, .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

液相辐射还原过程中纳米银颗粒的形貌与尺寸控制