化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (3) : 189-193.

科学研究

表面活性剂结构对纳米CeO₂在水中的分散性影响

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Influence of surfactant structure on dispersion of nano-CeO₂ in water

Li Qiaoyun^1,2, Xiao Linjiu^1,2, Li Wenze^1,2, Liu Ziqi¹

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Received		Published
2019-07-30		2020-03-20
Issue Date	Revised Date
2020-04-02	2019-07-30

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摘要

采用悬浮液体系吸光度法,研究不同结构表面活性剂对纳米CeO₂粉体在水中分散性影响。考察了影响分散稳定性的物理分散方式、表面活性剂的结构和浓度等因素。结果表明,超声波分散效率远优于机械搅拌。表面活性剂作为纳米CeO₂在水介质中的分散剂,其分散性与表面活性剂结构有重要关系。非离子型表面活性剂效果优于离子型表面活性剂。非离子型表面活性剂以亲油基团朝向CeO₂粒子,且亲油基团链长较长的效果更好;而离子型表面活性剂以亲水基团朝向CeO₂粒子,亲水基团小的表面活性剂效果好,亲油基团的链长度影响不太明显。

Abstract

The dispersion of nano-CeO₂ powders was evaluated by measuring the absorbance of suspension system,and the effects of surfactants with different structures on the dispersion of nano-CeO₂ powders in water were studied.The physical dispersion mode,the structure and concentration of surfactants were investigated.The results shown that the dispersing efficiency of ultrasonic wave was much better than that of mechanical stirring.Surfactant was a dispersant of nano-CeO₂ in water,and its dispersibility was closely related to the structure of surfactant.The effect of nonionic surfactants was better than that of ionic surfactants.The effect of nonionic surfactants with lipophilic groups toward CeO₂ particles was better than that of ionic surfactants with hydrophilic groups toward CeO₂ particles.The effect of surfactants with small hydrophilic groups was better,and the chain length of lipophilic groups was not obvious.

关键词

纳米CeO₂ / 分散 / 吸光度

Key words

nano-CeO₂ / dispersion / absorption

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表面活性剂结构对纳米CeO₂在水中的分散性影响[J]. 化工新型材料, 2020, 48(3): 189-193 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Tiseanu C,Parvulescu V,Avram D,et al.Local struture and nanoscale homogeneity of CeO₂-ZrO₂:differences and similarities to parent oxides revealed by luminescence with temporal and spectral resolution[J].Physical Chemistry Chemical physics,2013,16(2):703-710.
[2] Zhao K,Qi J,Zhao S L,et al.Multiple Au cores in CeO₂ hollow spheres for the superior catalytic reduction of pnitrophenol[J].Chinese Journal of Catalysis,2015,36(3):261-267.
[3] Shi L M,Gao C L,Guo F H,et al.Catalytic performance of Zr-doped CuO-CeO₂ oxides for CO selective oxidation in H₂-rich stream[J].Journal of Rare Earths,2019,37:720-725.
[4] Ni J M,Zhao X J,Zhao Q N.Effect of heat-treatmet on crystalline phase and UV absorption of 60CeO₂-40 TiO₂ thin films by magnetron sputtering[J].Journal of Wuhan University of Technology-Mater,2012,27(5):881-885.
[5] Liu X Y,Liu Y L,Liang Y,et al.Optimization of slurry components for a copper chemical mechanical polishing at low down pressure using response surface methodology[J].Microelectronic Engineering,2011,88(1):99-104.
[6] Yang J C,Oh D W,Lee G W,et al.Step height removal mechanism of chemical mechanical planarization (CMP) for sub-nano-surface finish[J].Wear,2010,268(3/4):505-510.
[7] Sung M C,Lee G H,Kim D W.Single and polycry-stalline CeO₂ nanorods as oxygen-electrode materials for lithium-oxygen batteries[J].Nanoscale,2018,10(45):21292-21297.
[8] Wang H Y,Guo Z S,Xing G E,et al.Study on prep-aring nano-sized ZrO₂ by different techniques[J].Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,2006,22(8):753-759.
[9] 周彬彬,张宁,赵介南,等.纳米Al₂O₃颗粒的分散机理研究进展[J].兵器材料科学与程,2017,40(1):115-118.
[10] 江成军,段志伟,张振忠,等.不同表面活性剂对纳米银粉在乙醇中分散性能的影响[J].稀有金属材料与工程,2007,36(4):724-727.
[11] 汤鑫,黄钧声,付敏.纳米铜的制备及其在水介质中的分散工艺研究[J].热加工工艺,2014,43(6):115-118.
[12] Said Z,Sabiha M A,Saidur R,et al.Performance enhancement of a flat plate solar collector using titanium dioxide nanofluid and polyethylene glycol dispersant[J].Journal of Cleaner Production,2015,92:343-353.
[13] 徐耀群,李曙光,王娟,等.超声波及分散剂对纳米SiO₂/CaCO₃/Al₂O₃颗粒分散特性的影响[J].2018,32,300-304.
[14] Zou H,Wu S S,Shen J.Preparation of nano α-alumina powder and wear resistance of nanoparticles reinforced composite coating[J].Powder Technology,2014,257:83-87.
[15] 周涛,姚颖悟,周游,等.液相中纳米颗粒分散方法研究进展[J].Plating and Finishing,2013,35(2):8-11.
[16] 沈钟,赵振国,康万利.胶体与表面化学[M].4版.北京:化学工业出版社,2012:74-80.
[17] 李娟,姜世航.物理分散方法对纳米碳化硅在水体系中分散性的影响[J].电镀与涂饰,2011,30(8):21-23.
[18] Birgit B,Frank H,Alois K S.Ultrasonic dispersion of inorganic nanoparticles in epoxy resin[J].Ultrasonics Sonochemistry,2009,16(5):622-628.
[19] 李悦芳.金属氧化物纳米粒子的分散及其环氧改性进展[J].热固性树脂,2015,30(5):67-70.
[20] 李玲.表面活性剂与纳米技术[M].北京:化学工业出版社,2003.12:158-170.
[21] Wang P,Fang J,Qin S,et al.Molecular weight dependence of viscosity and shear modulus of polyet-hylene glycol (PEG) solution boundary layers[J].Journal of Physical Chemistry C,2009,113(31):13793-13800.