biostudies-literatureUnknown2(3)Kawamura SThe synthesis of silver nanoparticles (AgNPs) within the interlayer space of transparent layered titania nanosheet (TNS) films is investigated. A considerable number of silver ions (≈70% against the cation exchange capacity of the TNS) are intercalated in the TNS films using methyl-viologen-containing TNSs as a precursor. The silver ion (Ag⁺)-containing TNS films are treated with aqueous sodium tetrahydroborate (NaBH₄), resulting in a gradual color change to bright blue. Various structural analyses clearly show that crystalline AgNPs are generated within the interlayer space of the TNSs. The NaBH₄-treated films show intense and characteristic near-infrared (NIR) extinction spectra up to 1800 nm. The stability of the AgNPs within the TNS against oxygen and mGlobal challenges (Hoboken, NJ)1700105https://www.ebi.ac.uk/biostudies/studies/S-EPMC6607257biostudies-literaturePreparation of Stable Silver Nanoparticles Having Wide Red-To-Near-Infrared Extinction.PMC6607257Norimatsu WSasaki KAsakura YEguchi MSakai SYin SSaito KKawamura SSaito MYagi MSasai RKusunoki MMatsubara KYui TfalsePreparation of Stable Silver Nanoparticles Having Wide Red-To-Near-Infrared Extinction.The synthesis of silver nanoparticles (AgNPs) within the interlayer space of transparent layered titania nanosheet (TNS) films is investigated. A considerable number of silver ions (≈70% against the cation exchange capacity of the TNS) are intercalated in the TNS films using methyl-viologen-containing TNSs as a precursor. The silver ion (Ag⁺)-containing TNS films are treated with aqueous sodium tetrahydroborate (NaBH₄), resulting in a gradual color change to bright blue. Various structural analyses clearly show that crystalline AgNPs are generated within the interlayer space of the TNSs. The NaBH₄-treated films show intense and characteristic near-infrared (NIR) extinction spectra up to 1800 nm. The stability of the AgNPs within the TNS against oxygen and m2018-01-01T00:00:00Z2018 Mar2025-04-22T20:31:25.728Z2019-10-11T07:02:44ZS-EPMC66072573156532510.1002/gch2.201700105