Understanding and Controlled Growth of Silver Nanoparticles Using Oxidized N-Methyl-pyrrolidone as a Reducing Agent

Abstract

We report a facile synthesis of silver nanoparticles (AgNPs) by using a new reducing agent, pretreated N-methyl-pyrrolidone (NMP*). The resulting AgNPs are characterized by using UV−vis, TEM, and X-ray spectroscopy. These AgNPs exhibit strong surface enhanced Raman scattering response on addition of 4-mercaptobenzoic acid. A possible redox mechanism involving silver ion and NMP* was proposed. The oxidized species resulting from thermally treated NMP/O2 were analyzed by nuclear magnetic resonance and gas chromatography techniques, and it was determined that 5-hydroxy-N-methyl-2-pyrrolidone played the role of reducing agent. The facile synthesis of functional metal nanoparticles via an environmentally friendly procedure with control in particle size, and understanding of the reaction mechanisms pave the ways to further developing metal nanoparticles for chemical and biological detections.

One‐Pot Fabrication of Layered α‐Phase Nickel–Cobalt Hydroxides as Advanced Electrode Materials for Pseudocapacitors

“…NMP is a typical polar solvent, and its chemical structure has the same heterocyclic rings as poly(vinyl pyrrolidone) (PVP). [24] Therefore, NMP may also serve as the surfactant to facilitate the hydrolysis of metal ions in the hydrothermal environment and grow into a layered hydroxide, giving rise to the a-phase hydroxides. Interestingly, a-Ni(OH) 2 can still be obtained if no additional H 2 O is added to the solvent.…”

Tunable release of silver nanoparticles from temperature-responsive polymer blends

“…Elashnikov et al, Tunable release of silver nanoparticles from temperature-responsive polymer blends 6 According to [39] main byproducts are 5-hydroxy-N-methyl pyrrolidone, N-methyl succinimide, and nitrate derivatives. During preparation procedure yellowing of the samples was observed.…”

Mechanism of Sodium Ion Storage in Na7[H2PV14O42] Anode for Sodium‐Ion Batteries

“…4.8 as displayed in Figure b. According to literature, NMP would be a reducing agent which undergoes the reaction with water at high temperature . Therefore, the Na 7 [H 2 PV 14 O 42 ] electrodes might be reduced by NMP during the preparation of electrodes.…”