陈军, 李强, 张建军. 三角形铜微/纳米结构的离子热法制备与表征[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 57-62. DOI: 10.3969/j.issn.1001-4926.2015.03.011
引用本文: 陈军, 李强, 张建军. 三角形铜微/纳米结构的离子热法制备与表征[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 57-62. DOI: 10.3969/j.issn.1001-4926.2015.03.011
CHEN Jun, LI Qiang, ZHANG Jian-jun. Preparation and Characterization of Triangle-like Copper Micro/nano Structure by an Ionothermal Method[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 57-62. DOI: 10.3969/j.issn.1001-4926.2015.03.011
Citation: CHEN Jun, LI Qiang, ZHANG Jian-jun. Preparation and Characterization of Triangle-like Copper Micro/nano Structure by an Ionothermal Method[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 57-62. DOI: 10.3969/j.issn.1001-4926.2015.03.011

三角形铜微/纳米结构的离子热法制备与表征

Preparation and Characterization of Triangle-like Copper Micro/nano Structure by an Ionothermal Method

  • 摘要: 分别以不同种类的离子液体为反应介质,在不同反应温度下,以Cu(NO3)2为铜源,水合肼为还原剂,采用离子热法合成了微/纳米铜粉。研究了反应介质种类和溶液的PH值等因素对微/纳米铜颗粒形貌的影响。采用XRD、SEM、XPS和紫外-可见光光谱对所制备的微/纳米铜粉进行了表征。XRD结果显示,当反应温度在120~160℃时,所制备的样品只有铜物相,而当反应温度达到180℃时,所制备的样品除了铜物相,还有Cu2O生成。SEM结果表明,当反应介质为四乙基溴化铵/丁二酸离子液体体系时,所制备的微/纳米铜呈三角状,而当反应介质为尿素/氯化胆碱离子液体体系时,所制备的微/纳米铜呈不规则球形。紫外-可见光谱结果表明,所制备的三角形微/纳米铜在200~900 nm波长范围有2个吸收峰,分别在525、605 nm处。这些三角状微/纳米铜晶体将被应用在表面增强光谱和表面等离子体光子学领域。

     

    Abstract: Micro/nano copper powders were synthesized by an ionothermal method using Cu(NO3)2 as the copper source, hydrazine hydrate as reducing agent, and different kinds of ionic liquids as reaction medium, under the different reaction temperature.The influence of the type of the reaction medium and the pH value of the solution on the morphology of micro/nano copper particles were studied.The prepared samples were characterized by XRD, SEM, XPS and ultraviolet-visible (UV-vis) spectrum, respectively.XRD results indicated that when the reaction temperature was between 120℃ and 160℃, the prepared sample was only copper phase, and the sample prepared by the reaction temperature reached 180℃, and the Cu2O was formed.SEM results indicated that when the reaction medium is tetraethyl ammonium bromide/butanedioic acid ionic liquid system, the prepared micro/nano copper crystals are triangular, and the micro/nano copper crystals prepared in the urea/choline chloride reaction medium is not regular sphere.The UV-vis spectrum result indicated that in the wavelength range of 200~900 nm, the triangle-like copper micro/nano crystals exhibited two absorption peaks centered at 525 nm and 605nm, respectively.The triangle-like copper micro/nano crystals will be applied in surface enhanced spectroscopy and plasmonics field.

     

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