中国物理B ›› 2009, Vol. 18 ›› Issue (10): 4552-4557.doi: 10.1088/1674-1056/18/10/076

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Effect of polyacrylamide on morphology and electromagnetic properties of chrysanthemum-like ZnO particles

闫军锋, 张志勇, 游天桂, 赵武, 贠江妮, 张富春, 张晓丹   

  1. School of Information Science and Technology, Northwest University, Xi'an 710069, China
  • 收稿日期:2009-04-03 修回日期:2009-04-26 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2005A000200), the Xi'an Applied Materials Innovation Fund, China (Grant No XA-AM-200712), and the Innovative Experiment Program for Chinese Students (Gra

Effect of polyacrylamide on morphology and electromagnetic properties of chrysanthemum-like ZnO particles

Yan Jun-Feng(闫军锋), Zhang Zhi-Yong(张志勇)†, You Tian-Gui(游天桂), Zhao Wu(赵武), Yun Jiang-Ni(贠江妮), and Zhang Fu-Chun(张富春)   

  1. School of Information Science and Technology, Northwest University, Xi'an 710069, China
  • Received:2009-04-03 Revised:2009-04-26 Online:2009-10-20 Published:2009-10-20
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2005A000200), the Xi'an Applied Materials Innovation Fund, China (Grant No XA-AM-200712), and the Innovative Experiment Program for Chinese Students (Gra

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摘要： Through hydrothermal process, the chrysanthemum-like ZnO particles are prepared with zinc acetate dihydrate (Zn(CH3COO)2\cdot 2H2O) and sodium hydroxide (NaOH) used as main resources under the different concentrations of surfactant polyacrylamide (PAM). The microstructure, morphology and the electromagnetic properties of the as-prepared products are characterized by high-resolution transmission electron microscopy (HRTEM), field emission environment scanning electron microscope (FEESEM) and microwave vector network analyzer, respectively. The experimental results indicate that the as-prepared products are ZnO single crystalline with hexagona wurtzite structure, that the values of slenderness ratio L_d are different in different PAM concentrations, and that the good magnetic loss property is found in the ZnO products, and the average magnetic loss tangent tanδu increases with PAM concentration increasing, while the dielectric loss tangent tanδ e decreases.

Abstract: Through hydrothermal process, the chrysanthemum-like ZnO particles are prepared with zinc acetate dihydrate (Zn(CH3COO)2$\cdot$2H2O) and sodium hydroxide (NaOH) used as main resources under the different concentrations of surfactant polyacrylamide (PAM). The microstructure, morphology and the electromagnetic properties of the as-prepared products are characterized by high-resolution transmission electron microscopy (HRTEM), field emission environment scanning electron microscope (FEESEM) and microwave vector network analyzer, respectively. The experimental results indicate that the as-prepared products are ZnO single crystalline with hexagona wurtzite structure, that the values of slenderness ratio $L_d$ are different in different PAM concentrations, and that the good magnetic loss property is found in the ZnO products, and the average magnetic loss tangent tan$\delta_u$ increases with PAM concentration increasing, while the dielectric loss tangent tan$\delta_e$ decreases.

Key words: chrysanthemum-like ZnO particles, electromagnetic properties, hydrothermal method, PAM

中图分类号:  (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))

  • 61.46.Df
75.50.Tt (Fine-particle systems; nanocrystalline materials) 77.22.Ch (Permittivity (dielectric function)) 77.22.Gm (Dielectric loss and relaxation) 81.07.Bc (Nanocrystalline materials) 81.16.-c (Methods of micro- and nanofabrication and processing)