小型金纳米棒的制备

doi:10.11901/1005.3093.2020.542

材料研究学报

2022, Vol. 36

Issue (7): 519-526 DOI: 10.11901/1005.3093.2020.542

研究论文

本期目录 | 过刊浏览

小型金纳米棒的制备

胡青¹, 吴春芳¹(

), 张凯锋², 潘浩¹, 李坤²

^1.西安工业大学光电工程学院西安 710021
^2.兰州空间技术物理研究所真空技术与物理重点实验室兰州 730000

Preparation of Small Gold Nanorods

HU Qing¹, WU Chunfang¹(

), ZHANG Kaifeng², PAN Hao¹, LI Kun²

^1.School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710021, China
^2.Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institutute of Physics, Lanzhou 730000, China

引用本文:

胡青, 吴春芳, 张凯锋, 潘浩, 李坤. 小型金纳米棒的制备[J]. 材料研究学报, 2022, 36(7): 519-526.
Qing HU, Chunfang WU, Kaifeng ZHANG, Hao PAN, Kun LI. Preparation of Small Gold Nanorods[J]. Chinese Journal of Materials Research, 2022, 36(7): 519-526.

全文: PDF(14213 KB) HTML

摘要:

用种子生长法合成小型金纳米棒,改变合成参数可调控其形貌和性能。使用紫外-可见-近红外分光光度计和透射电子显微镜(TEM)测试和观察了金纳米棒的消光特性和形貌,研究了AgNO₃、十六烷基三甲基溴化铵(CTAB)和籽晶的用量对金纳米棒的形貌和性能的影响。结果表明：在不同条件下制备的金纳米棒具有良好的重现性。在(0.01 mol/L) AgNO₃用量为0.035 mL、(0.1 mol/L) CTAB用量为11 mL、籽晶用量为1.1 mL的最佳条件下合成的金纳米棒,其长径比约为3.8,平均长度约为34 nm,形貌均匀性和分散性良好。这种小型金纳米棒可用于检测残留物福美双(Thiram)。

关键词 ：金属材料, 金纳米棒, 种子生长法, 长径比, 福美双

Abstract：

Small gold nanorods were synthesized by seed growth method. The morphology and properties of the nanorods could be controlled by changing the synthesis parameters. The extinction characteristics and morphology of gold nanorods were measured and observed by uV-vis-nIR spectrophotometer and transmission electron microscope (TEM). The effects of the amount of AgNO₃, cetyltrimethyl ammonium bromide (CTAB) and seed crystal on the morphology and properties of gold nanorods were investigated. The results show that the gold nanorods prepared under different conditions have good reproducibility. The gold nanorods synthesized under the optimum conditions of 0.035 mL of (0.01 mol/L) AgNO₃, 11 mL of (0.1 mol/L) CTAB and 1.1 mL of seed crystal, have an aspect ratio of about 3.8, an average length of about 34 nm, and good morphology uniformity and dispersion. The small gold nanorods could be used to detect a residue called Thiram.

Key words： metallic materials gold nanorods seed-mediated growth method aspect ratio thiram

收稿日期: 2020-12-21

ZTFLH:

TB31

基金资助:装备预研重点实验室基金(6142207190407);陕西省教育厅科研计划(21JY018)

作者简介: 胡青,女,1995年生,硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.542 或 https://www.cjmr.org/CN/Y2022/V36/I7/519

图1 制备晶种溶液的流程图

图2 制备生长溶液的流程图

图3 AgNO3(0.035、0.065、0.08、0.1 mL)用量不同的金纳米棒的吸收光谱

图4 AgNO3(a: 0.035 mL、b: 0.065 mL、c: 0.08 mL、d: 0.1 mL)用量不同的金纳米棒的TEM照片

表1 AgNO3用量对金纳米棒平均长度、直径、长径比、纵向共振峰波长和产率的影响

图5 籽晶(0.65 mL、0.8 mL、1 mL、1.1 mL)用量不同的金纳米棒的吸收光谱

图6 籽晶(a: 0.65 mL、b: 0.8 mL、c: 1 mL、d: 1.1 mL)用量不同的金纳米棒的TEM照片

表2 籽晶用量对金纳米棒平均长度、直径、长径比、纵向共振峰波长和产率的影响

图7 CTAB(7 mL、9 mL、11 mL、13 mL)用量不同的金纳米棒的吸收光谱

图8 CTAB(a: 7 mL、b: 9 mL、c: 11 mL、d: 13 mL)用量不同的金纳米棒的TEM照片

表3 CTAB用量对金纳米棒平均长度、直径、长径比、纵向共振峰波长和产率的影响

图9 在优化条件下制备的金纳米棒的吸收光谱

图10 在优化条件下制备的金纳米棒的TEM照片

图11 金纳米棒的长度分布柱状图

图12 用金纳米棒检测福美双的拉曼增强光谱以及1374 cm-1处的特征峰强度与福美双浓度的关系

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