title: Drastic nickel ion removal from aqueous solution by curcumin-capped Ag nanoparticles.
abstract: A completely green synthesis protocol has been adopted to obtain silver nanoaggregates capped by the natural compound (1E, 6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-diene), also known as curcumin. The synthesis has been monitored by infrared, Raman, visible and fluorescence spectroscopies. Characterization confirms that curcumin reduces and caps the nanoparticles, and such a procedure allows its solubility in water and drastically increases curcumin stability. Silver nanoparticles (AgNPs)/curcumin complex has been dispersed in a water solution containing a known nickel ion concentration. After three days, a grey precipitate is observed and nickel concentration in the solution is reduced by about 70%.
authors.affiliation: Department of Biological and Environmental Sciences and Technologies, DISTEBA, University of Salento, Via per Arnesano, I-73100 Lecce, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Bettini
authors.forename: R
authors.initials: R
authors.lastname: Pagano
authors.forename: L
authors.initials: L
authors.lastname: Valli
authors.forename: G
authors.initials: G
authors.lastname: Giancane
mesh_terms: D065966:Absorption, Physicochemical; D000327:Adsorption; D002614:Chelating Agents / Q000737:chemistry; D003474:Curcumin / Q000737:chemistry*; D007477:Ions / Q000737:chemistry / Q000302:isolation & purification; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009532:Nickel / Q000737:chemistry / Q000302:isolation & purification*; D012834:Silver / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D002614:Chelating Agents; D007477:Ions; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; D012834:Silver; D009532:Nickel; D003474:Curcumin