Adsorption and Chemical Modification of Phenols on a Silver Surface

Synthesis of Silver Nanoparticles by Reduction of Silver Ion with m-Hydroxybenzoic Acid

“…No observable peak around 1700 cm -1 indicated the contribution of the carboxyl group in the complexation with AgNPs [15]. Previously published data also support that hydroxybenzoic acid attach to the AgNPs through its carboxyl group and providing stabilization effect [16,17]. …”

Surface-Enhanced Raman Spectroscopy of Chernozem Humic Acid and Their Fractions Obtained by Coupled Size Exclusion Chromatography—Polyacrylamide Gel Electrophoresis (SEC-PAGE)

“…31 The Raman spectra of related aromatic compounds such as p-hydroxybenzoic acid 32 and guaiacol 33 also show a medium Raman band seen at 1517 cm À1 . Moreover, intense Raman bands were found in the SERS spectra of caffeic acid, 34 cathecol, 35 gallic acid, 36 and vanillic acid 32 at 1505, 1519, 1515, and 1537 cm À1 , respectively. Some of these molecules were reported to have undergone a chemical change leading to lignin-like polyaromatic products, with a high content in oxygen groups, similar to those forming part of the low molecular weight humic substances.…”

Silver metallisation of titania particles: effects on photoactivity for the oxidation of organics

“…A colour change was not observed with silver/titania particles as these particles were light brown in colour. However, salicylic acid can also adsorb on silver metal surfaces by the formation of silver-salicylate complexes [31,32]. At pH 3.5, salicylic acid (pK a 2.97) dissociates to form negatively charged salicylate ions.…”