Provider: Ingenta Connect Database: Ingenta Connect Content: application/x-research-info-systems TY - ABST AU - Cui, Qiang AU - Zhong, Lubin AU - Ding, Jiabao AU - Weng, Jian TI - Assembly of Silver Nanoparticles in Pearl-Necklace-Like Nanostructure Using a Polyelectrolyte JO - Current Nanoscience PY - 2010-12-01T00:00:00/// VL - 6 IS - 6 SP - 610 EP - 618 KW - Van der Waals forces KW - Time KW - Ag+ ions KW - UV/Vis spectrum KW - (DLVO) theory KW - template KW - self-assembly KW - AgNO3 KW - quasi-2D KW - HRTEM KW - Infra-red (IR) measurement KW - crystals KW - XRD pattern KW - microwave irradiation KW - Polyelectrolyte KW - microwave KW - electrostatic interactions KW - silver KW - spaced nanoparticles KW - PMAA KW - CO2 KW - pH KW - COOH KW - nanostructures KW - spectroscopy KW - One-dimensional N2 - Pearl-necklace-like Ag nanostructures are prepared with microwave irradiation in a one-step process using polymethacrylic acid (PMAA) as a reducing agent, and AgNO3 as a silver precursor without other chemical agent in a 6.5≤pH≤8.0 aqueous solution. Derjaguin- Landau-Verwey-Overbeek theory is used to calculate the stability of Ag particles in the aqueous medium. The calculated results are fairly consistent with the experimental results. The formation mechanism of pearl-necklace-like silver nanostructures is suggested as three steps: immobilization of Ag+ ions with the PMAA template, reduction of Ag+ ions with PMAA under microwave irradiation, anisotropic self-assembly of silver particles capped by the negatively charged PMAA with electrostatic interactions and Van der Waals forces.





UR - https://www.ingentaconnect.com/content/ben/cnano/2010/00000006/00000006/art00009 M3 - doi:10.2174/157341310793348623 UR - https://doi.org/10.2174/157341310793348623 ER -