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[1] Zhang Xiaoqiang, Yin Lihong, Pu Yuepu,. Comparison of dispersion of nanoparticles ultrasonicatedwith probe and cup horn [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 441-444. [doi:10.3969/j.issn.1003-7985.2011.04.018]
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Comparison of dispersion of nanoparticles ultrasonicatedwith probe and cup horn()
探针式和杯式超声探头对超声分散纳米颗粒的效果比较
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
27
Issue:
2011 4
Page:
441-444
Research Field:
Materials Sciences and Engineering
Publishing date:
2011-12-31

Info

Title:
Comparison of dispersion of nanoparticles ultrasonicatedwith probe and cup horn
探针式和杯式超声探头对超声分散纳米颗粒的效果比较
Author(s):
Zhang Xiaoqiang;  Yin Lihong;  Pu Yuepu
School of Public Health, Southeast University, Nanjing 210009, China
Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, Southeast University, Nanjing 210009, China
张小强;  尹立红;  浦跃朴
东南大学公共卫生学院, 南京210009; 东南大学环境医学工程教育部重点实验室, 南京210009
Keywords:
nanoparticles;  dispersion;  ultrasonic devices
纳米颗粒;  分散;  超声设备
PACS:
TB383
DOI:
10.3969/j.issn.1003-7985.2011.04.018
Abstract:
This study aims to investigate the effects of a probe and a cup horn on the de-agglomeration efficiency in ultrasound vibration processes. TiO2 and Al2O3 nanoparticle dispersions were prepared in distilled water at a concentration of 50.0 mg/mL followed by treatment with a dispersion stabilizer(100% FBS)and ultrasound vibration at 20 kHz and 35% amplitude for 10 min by a probe and a cup horn, respectively. The average sizes of dispersed TiO2 and Al2O3 nanoparticles were measured by a dynamic light scattering device. Compared to dispersion with the probe sonicating, the average sizes of TiO2 and Al2O3 particles sonicated by the cup horn are markedly smaller at time points of 30, 60, 120, and 180 min. The TiO2 and Al2O3 particle size distributions of cup horn-treated suspensions were narrower than those of probe-treated suspensions at time points of 120 and 180 min. It is suggested that the cup horn has a higher efficiency than the probe in dispersing nanoparticles. The cup horn is better than the probe for processing multiple small sample vessels simultaneously. Indirect cup horn sonication is ideal for processing pathogenic and sterile samples.
比较了探针式和杯式超声探头对纳米颗粒的超声分散效果.用蒸馏水将纳米二氧化钛和纳米三氧化二铝配制成浓度为50.0 mg/mL的混悬液, 随后加入分散稳定剂(100%胎牛血清), 分散液涡旋振荡2 min后备用.分别采用探针式和杯式探头以20 kHz, 35%振幅超声波将上述2种混悬液振荡10 min, 用动态光散射法分析二氧化钛和三氧化二铝纳米颗粒的粒径大小及其分布情况.结果表明, 杯式探头超声波振荡组在30, 60, 120, 180 min时间点的二氧化钛和三氧化二铝平均粒径均明显小于探针式探头超声波振荡组.同时, 杯式探头超声波振荡组在120和180 min时间点的二氧化钛和三氧化二铝颗粒粒径分布范围均窄于探针式探头超声波振荡组.结果说明杯式超声探头比探针式超声探头对纳米颗粒具有更好的分散效果.杯式探头在同一时间能处理多个小容积样本且特别适合于制备有致病危险性的样品或无菌样品.

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Memo

Memo:
Biographies: Zhang Xiaoqiang(1968—), male, doctor, associate professor; Pu Yuepu(corresponding author), male, professor, yppu@seu.edu.cn.
Foundation items: The National Basic Research Program of China(No.2011CB933404), the Foundation of Jiangsu Key Laboratory for Biomaterials and Devices(No.2010LBMD05).
Citation: Zhang Xiaoqiang, Yin Lihong, Pu Yuepu.Comparison of dispersion of nanoparticles ultrasonicated with probe and cup horn[J].Journal of Southeast University(English Edition), 2011, 27(4):441-444.[doi:10.3969/j.issn.1003-7985.2011.04.018]
Last Update: 2011-12-20