Synthesis and Characterization of Silver‐Nanoparticle‐Deposited α‐Bi₂Mo₃O₁₂ Nanorods

Abstract

Silver (Ag) nanoparticles with an average size of ca. 10 nm were uniformly deposited on the surface of α‐Bi2Mo3O12 nanorods by using an ultrasound sonication method. Ultrasonic irradiation of preformed α‐Bi2Mo3O12 spherical nanoparticles (ca. 200 nm) in pyridine resulted in α‐Bi2Mo3O12 nanorods (ca. 100 nm diameter). Further, sonication of the mixture of α‐Bi2Mo3O12 nanorods and Ag2O in pyridine yielded a nanocomposite of α‐Bi2Mo3O12 nanorods with deposited Ag nanoparticles and pyridine. Calcination of the nanocomposite at 450 °C afforded pyridine‐free α‐Bi2Mo3O12 nanorods with deposited Ag nanoparticles. A plausible mechanism is proposed. The crystallized Ag nanoparticles are uniformly deposited on the surface, with bismuth (Bi) as the preferential binding site, as revealed by time‐of‐flight secondary ion mass spectrometry (TOF‐SIMS). Structural, compositional and morphological characterization of the products is carried out by using transmission electron microscopy, energy‐dispersive X‐ray analysis, scanning electron microscopy, thermogravimetric analysis, X‐ray diffraction, X‐ray photoelectron spectroscopy and TOF‐SIMS. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

Synthesis of silver nanoparticle-coated poly(styrene-co-sulfonic acid) hybrid materials and their application in surface-enhanced Raman scattering (SERS) tags

“…Despite the many applications of Ag-NPs, to date there is little progress in developing a facile green route for the formation of robust metal nanoparticles and metal nanoparticle polymer materials. 25,26 There is an increased emphasis on the topic of green chemistry, which is defined as the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. 27,28 In this paper, a straightforward and green chemistry synthetic route to fabricate stable Ag nanoparticle-coated PS beads by an in situ reduction method is described.…”