{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T21:56:11Z","timestamp":1793310971060,"version":"4.5.0"},"reference-count":64,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2013,4,11]],"date-time":"2013-04-11T00:00:00Z","timestamp":1365638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Size-controlled and monodispersed silver nanoparticles were synthesized from an aqueous solution containing silver nitrate as a metal precursor, polyvinyl alcohol as a capping agent, isopropyl alcohol as hydrogen and hydroxyl radical scavengers, and deionized water as a solvent with a simple radiolytic method. The average particle size decreased with an increase in dose due to the domination of nucleation over ion association in the formation of the nanoparticles by gamma reduction. The silver nanoparticles exhibit a very sharp and strong absorption spectrum with the absorption maximum \u03bbmax blue shifting with an increased dose, owing to a decrease in particle size. The absorption spectra of silver nanoparticles of various particle sizes were also calculated using a quantum physics treatment and an agreement was obtained with the experimental absorption data. The results suggest that the absorption spectrum of silver nanoparticles possibly derived from the intra-band excitations of conduction electrons from the lowest energy state (n = 5, l = 0) to higher energy states (n \u2265 6; \u0394l = 0, \u00b11; \u0394s = 0, \u00b11), allowed by the quantum numbers principle. This demonstrates that the absorption phenomenon of metal nanoparticles based on a quantum physics description could be exploited to be added into the fundamentals of metal nanoparticles and the related fields of nanoscience and nanotechnology.<\/jats:p>","DOI":"10.3390\/ijms14047880","type":"journal-article","created":{"date-parts":[[2013,4,11]],"date-time":"2013-04-11T12:00:21Z","timestamp":1365681621000},"page":"7880-7896","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":140,"title":["Size-Controlled and Optical Properties of Monodispersed Silver Nanoparticles Synthesized by the Radiolytic Reduction Method"],"prefix":"10.3390","volume":"14","author":[{"given":"Elias","family":"Saion","sequence":"first","affiliation":[{"name":"Physics Department, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elham","family":"Gharibshahi","sequence":"additional","affiliation":[{"name":"Physics Department, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazem","family":"Naghavi","sequence":"additional","affiliation":[{"name":"Department of Science, Kerman branch, Islamic Azad University, Kerman 76351-31167, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2013,4,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Hornyak, G.L., Tibbals, H.F., Dutta, J., and Moor, J.J. (2009). Introduction to Nanoscience and Nanotechnology, CRC Press.","DOI":"10.1201\/9781420047806"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Braunstein, P., Oro, L.A., and Raithby, P.R. (1999). Metal Clusters in Chemistry, Wiley.","DOI":"10.1002\/9783527618316"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1088\/0957-4484\/21\/6\/062001","article-title":"Nanostructured catalysts in fuel cells","volume":"21","author":"Zhong","year":"2010","journal-title":"Nanotechnology"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2236","DOI":"10.1016\/j.matlet.2009.07.042","article-title":"Synthesis of uniform silver nanoparticles with a controllable size","volume":"63","author":"Dadosh","year":"2009","journal-title":"Mater. Lett"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"031908","DOI":"10.1063\/1.1988980","article-title":"Aligned Silver Nanorod Arrays Produce High Sensitivity Surface-Enhanced Raman Spectroscopy Substrates","volume":"87","author":"Chaney","year":"2005","journal-title":"Appl. Phys. Lett"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1088\/0957-4484\/17\/2\/037","article-title":"Silver nanowire arrays electrochemically grown into nanoporous anodic alumina templates","volume":"17","author":"Riveros","year":"2006","journal-title":"Nanotechnology"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"7852","DOI":"10.1002\/anie.200500766","article-title":"Nanoparticles as recyclable catalysts: The frontier between homogeneous and heterogeneous catalysis","volume":"44","author":"Astruc","year":"2005","journal-title":"Angew. J. Chem. Int. Ed"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.colsurfa.2010.12.001","article-title":"Single pot synthesis of polyaniline protected silver nanoparticles by interfacial polymerization and study its application on electrochemical oxidation of hydrazine","volume":"377","author":"Paulraj","year":"2011","journal-title":"Colloids Surf. A Physicochem. Eng. Aspects"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1402","DOI":"10.1021\/cr800339k","article-title":"Review of Electrochemical Hydrogen Sensors","volume":"109","author":"Korotcenkov","year":"2009","journal-title":"Chem. Rev"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1016\/j.nano.2007.02.001","article-title":"Synthesis and effect of silver nanoparticles on the antibacterial activity of different Antibiotics against Staphylococcus aureus and Escherichia coli","volume":"3","author":"Shahverdi","year":"2007","journal-title":"Nanomed. Nanotechnol. Biol. Med"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1712","DOI":"10.1128\/AEM.02218-06","article-title":"Does the antibacterial activity of silver nanoparticles depend on the shape of the nanoparticle? A study of the gram-negative bacterium Escherichia coli","volume":"73","author":"Pal","year":"2007","journal-title":"Appl. Environ. Microbiol"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1016\/j.mseb.2012.02.012","article-title":"Microwave assisted polymer stabilized synthesis of silver nanoparticles and its application in the degradation of environmental pollutants","volume":"177","author":"Rastogi","year":"2012","journal-title":"Mat. Sci. Eng. B"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"235104","DOI":"10.1088\/0957-4484\/19\/23\/235104","article-title":"Can silver nanoparticles be useful as potential biological labels?","volume":"19","author":"Schrand","year":"2008","journal-title":"Nanotechnology"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"10244","DOI":"10.1002\/chem.200801093","article-title":"Natural gum reduced\/stabilized gold nanoparticles for drug delivery formulations","volume":"14","author":"Dhar","year":"2008","journal-title":"Chem. Eur. J"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"783","DOI":"10.1103\/RevModPhys.57.783","article-title":"Surface-enhanced spectroscopy","volume":"57","author":"Moskovits","year":"1985","journal-title":"Rev. Mod. Phys"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1021\/am100840c","article-title":"Induction of apoptosis in cancer cells at low silver nanoparticle concentrations using chitosan nanocarrier","volume":"3","author":"Sanpui","year":"2011","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"10549","DOI":"10.1021\/jp002435e","article-title":"Nanosphere lithography: Tunable localized surface Plasmon resonance spectra of silver nanoparticles","volume":"104","author":"Jensen","year":"2000","journal-title":"J. Phys. Chem. B"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"3127","DOI":"10.1016\/j.tsf.2010.01.018","article-title":"Synthesis and catalytic properties of metal nanoparticles: Size, shape, support, composition, and oxidation state effects","volume":"518","author":"Cuenya","year":"2010","journal-title":"Thin Solid Films"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1781","DOI":"10.1002\/adma.200901271","article-title":"Nonspherical noble metal nanoparticles: Colloid-chemical synthesis and morphology control","volume":"22","author":"Sau","year":"2010","journal-title":"Adv. Mater"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1962","DOI":"10.1039\/c0nr00155d","article-title":"Monodispersity control in the synthesis of monometallic and bimetallic quasi-spherical gold and silver nanoparticles","volume":"2","author":"Zhang","year":"2010","journal-title":"Nanoscale"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"396","DOI":"10.1016\/S0021-9797(03)00567-8","article-title":"Phase transfer of silver nanoparticles from aqueous to organic solutions using fatty amine molecules","volume":"264","author":"Kumar","year":"2003","journal-title":"J. Colloid Interface Sci"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.colsurfa.2007.01.054","article-title":"Synthesis of Au, Ag and Au\u2013Ag alloy nanoparticles in aqueous polymer solution","volume":"302","author":"Pal","year":"2007","journal-title":"Colloids Surf. A"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"9683","DOI":"10.1021\/jp001761r","article-title":"Electrochemical Synthesis of Silver Nanoparticles","volume":"104","author":"Blanco","year":"2000","journal-title":"J. Phys. Chem. B"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"574","DOI":"10.1021\/la001038s","article-title":"Growth of silver colloidal particles obtained by citrate reduction to increase the Raman enhancement factor","volume":"17","author":"Rivas","year":"2001","journal-title":"Langmuir"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1351\/pac200072010083","article-title":"Reduction of silver nanoparticles in DMF. Formation of monolayers and stable colloids","volume":"72","year":"2000","journal-title":"Pure Appl. Chem"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1016\/j.colsurfa.2007.01.025","article-title":"Micelle assisted morphological evolution of nanoparticles","volume":"301","author":"Chaudhari","year":"2007","journal-title":"Colloids Surf. A"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"633","DOI":"10.1080\/00222337908056678","article-title":"Preparation of Colloidal Transition Metals in Polymers by Reduction with Alcohols or Ethers","volume":"13","author":"Hirai","year":"1979","journal-title":"J. Macromol. Sci. Chem"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1016\/0965-9773(96)00039-6","article-title":"Synthesis and characterization of nanoscale Ag\u2013Pd alloy particles","volume":"7","author":"Silvert","year":"1996","journal-title":"Nanostruct. Mater"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"850","DOI":"10.1002\/(SICI)1521-4095(199907)11:10<850::AID-ADMA850>3.0.CO;2-Z","article-title":"A novel ultraviolet irradiation photoreduction technique for the preparation of single-crystal Ag nanorods and Ag dendrites","volume":"11","author":"Zhou","year":"1999","journal-title":"Adv. Mater"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"5404","DOI":"10.1021\/cm0512777","article-title":"Photosensitized Growth of Silver Nanoparticles under Visible Light Irradiation: A Mechanistic Investigation","volume":"17","author":"Sudeep","year":"2005","journal-title":"Chem. Mater"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"564","DOI":"10.1021\/cm990637l","article-title":"Continuous synthesis of colloidal metal nanoclusters by microwave irradiation","volume":"12","author":"Tu","year":"2000","journal-title":"J. Chem. Mater"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1016\/j.colsurfa.2010.11.060","article-title":"Synthesis of starch-stabilized silver nanoparticles and their application as a surface plasmon resonance-based sensor of hydrogen peroxide","volume":"382","author":"Vasileva","year":"2011","journal-title":"Colloids Surf. A Physicochem. Eng. Aspects"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"8333","DOI":"10.1021\/jp001803b","article-title":"Structure and stability of silver nanoparticles in aqueous solution produced by laser ablation","volume":"104","author":"Mafune","year":"2000","journal-title":"J. Phys. Chem. B"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1240","DOI":"10.1016\/j.radphyschem.2010.07.004","article-title":"Gamma irradiation route to synthesis of highly re-dispersible natural polymer capped silver nanoparticles","volume":"79","author":"Rao","year":"2010","journal-title":"Radiat. Phys. Chem"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1039","DOI":"10.1016\/j.radphyschem.2003.10.016","article-title":"Optical and structural studies of silver nanoparticles","volume":"71","author":"Temgire","year":"2004","journal-title":"Radiat. Phys. Chem"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"3017","DOI":"10.1088\/0957-4484\/16\/12\/048","article-title":"Fabrication of silver\/cross-linked poly(vinyl alcohol) cable-like nanostructures under \u03b3-ray irradiation","volume":"16","author":"Wu","year":"2005","journal-title":"Nanotechnology"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.radphyschem.2004.06.006","article-title":"Radiolytic formation of Ag clusters in aqueous polyvinyl alcohol solution and hydrogel matrix","volume":"73","author":"Kumara","year":"2005","journal-title":"Radiat. Phys. Chem"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"1290","DOI":"10.1016\/j.radphyschem.2007.02.074","article-title":"Synthesis of silver nanoparticles supported on silica aerogel using gamma radiolysis","volume":"76","author":"Ramnani","year":"2007","journal-title":"Radiat. Phys. Chem"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1203","DOI":"10.1016\/j.radphyschem.2010.07.009","article-title":"Influence of dose on particle size of colloidal silver nanoparticles synthesized by gamma radiation","volume":"79","author":"Naghavi","year":"2010","journal-title":"Radiat. Phys. Chem"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1208","DOI":"10.1016\/j.radphyschem.2011.06.005","article-title":"Synthesis and characterization of silver\/poly(n-vinyl-2-pyrrolidone) hydrogel nanocomposite obtained by in situ radiolytic method","volume":"80","author":"Jovanovi","year":"2011","journal-title":"Radiat. Phys. Chem"},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Biswal, J., Misra, M., Borde, L.C., and Sabharwal, S (2012). Synthesis of silver nanoparticles in methacrylic acid solution by gamma radiolysis and their application for estimation of dopamine at low concentration. Radiat. Phys. Chem.","DOI":"10.1016\/j.radphyschem.2012.10.003"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"906","DOI":"10.1016\/j.carbpol.2012.04.033","article-title":"Silver nanoparticle-load PVA\/gum acacia hydrogel: Synthesis, characterization and antibacterial study","volume":"89","author":"Juby","year":"2012","journal-title":"Carbohydr. Polym"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1016\/j.matchemphys.2007.04.069","article-title":"\u03b3-Irradiation-induced preparation of Ag and Au nanoparticles and their characterizations","volume":"105","author":"Lai","year":"2007","journal-title":"Mater. Chem. Phys"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1016\/j.cattod.2005.11.082","article-title":"Nucleation, growth and properties of nanoclusters studied by radiation chemistry application to catalysis","volume":"113","author":"Belloni","year":"2006","journal-title":"Catal. Today"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1016\/j.matchemphys.2004.10.030","article-title":"Self-assembly of silver nanoparticles in a polymer solvent: Formation of a nanochain through nanoscale soldering","volume":"90","author":"Mallicka","year":"2005","journal-title":"Mater. Chem. Phys"},{"key":"ref_46","first-page":"54","article-title":"The mechanism of agglomeration and control in the process of ultrafine powder prepared by wet chemical method","volume":"7","author":"Zhiqiang","year":"1999","journal-title":"Chemistry"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1443","DOI":"10.1002\/macp.1994.021950427","article-title":"OH radical induced crosslinking and strand breakage of poly(vinyl alcohol) in aqueous solution in the absence and presence of oxygen. A pulse radiolysis and product study","volume":"195","author":"Ulanski","year":"1994","journal-title":"Macromol. Chem. Phys"},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"913","DOI":"10.1039\/b819027e","article-title":"Scalable heterogeneous synthesis of metallic nanoparticles and aggregate with polyvinyl alcohol","volume":"33","author":"Abargues","year":"2009","journal-title":"New J. Chem"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.radphyschem.2007.05.007","article-title":"Influences of surfactant (PVA) concentration and pH on the preparation of copper nano-particles by electron beam irradiation","volume":"77","author":"Zhou","year":"2008","journal-title":"Radiat. Phys. Chem"},{"key":"ref_50","unstructured":"Geers, H., and Witt, W (2008., January 21\u201323). Direct Calculation of the Volume Based Particle Size Distribution from PCS or PCCS Measurements. Stratford-upon-Avon, UK."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1653","DOI":"10.1016\/j.radphyschem.2012.05.015","article-title":"Influence of dose and ion concentration on formation of binary Al\u2013Ni alloy nanoclusters","volume":"81","author":"Abedini","year":"2012","journal-title":"Radiat. Phys. Chem"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1002\/andp.19083300302","article-title":"Contributions to the optics of turbid media, particularly of colloidal metal solutions","volume":"25","author":"Mie","year":"1908","journal-title":"J. Ann. Phys"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1204","DOI":"10.1016\/j.optmat.2004.11.012","article-title":"Optical properties of isolated and supported metal nanoparticles","volume":"27","author":"Noguez","year":"2005","journal-title":"Opt. Mater"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"10321","DOI":"10.1021\/jp034537l","article-title":"Optical absorption study of the surface Plasmon resonance in gold by self-assembly technique","volume":"38","author":"Okamoto","year":"2003","journal-title":"J. Phys. Chem. B"},{"key":"ref_55","first-page":"1","article-title":"Modeling of optical absorption of silver prolate nanoparticles stabilized by Gemini surfactant","volume":"273","author":"Renteria","year":"2006","journal-title":"Colloids Surf. A"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"57","DOI":"10.3844\/pisp.2010.57.64","article-title":"Quantum mechanical calculation of optical absorption of silver and gold nanoparticles by density functional theory","volume":"1","author":"Gharibshahi","year":"2010","journal-title":"Phys. Int"},{"key":"ref_57","first-page":"6","article-title":"On the theory of metal nanoparticles based on quantum mechanical calculation","volume":"7","author":"Saion","year":"2011","journal-title":"J. Fund. Sci"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"14723","DOI":"10.3390\/ijms131114723","article-title":"Influence of dose on particle size and optical properties of colloidal platinum nanoparticles","volume":"13","author":"Gharibshahi","year":"2012","journal-title":"Int. J. Mol. Sci"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"542","DOI":"10.1017\/S0305004100011683","article-title":"The calculation of atomic fields","volume":"23","author":"Thomas","year":"1927","journal-title":"Math. Proc. Camb. Philos. Soc"},{"key":"ref_60","first-page":"602","article-title":"Un metodo statistico per la determinazione di alcune priorieta dell\u2019atome","volume":"6","author":"Fermi","year":"1927","journal-title":"Rend. Accad. Naz. Lincei"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"864","DOI":"10.1103\/PhysRev.136.B864","article-title":"Inhomogeneous electron gas","volume":"136","author":"Hohenberg","year":"1964","journal-title":"Phys. Rev"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"1133","DOI":"10.1103\/PhysRev.140.A1133","article-title":"Self-consistent equations including exchange and correlation effects","volume":"140","author":"Kohn","year":"1965","journal-title":"Phys. Rev"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"376","DOI":"10.1017\/S0305004100016108","article-title":"Note on exchange phenomena in the Thomas atom","volume":"26","author":"Dirac","year":"1930","journal-title":"Math. Proc. Camb. Philos. Soc"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"431","DOI":"10.1007\/BF01337700","article-title":"Zur Theorie der Kernmassen","volume":"96","year":"1935","journal-title":"Zeitschrift fur Phys"}],"container-title":["International Journal of Molecular Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1422-0067\/14\/4\/7880\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:46:04Z","timestamp":1760219164000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1422-0067\/14\/4\/7880"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,4,11]]},"references-count":64,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2013,4]]}},"alternative-id":["ijms14047880"],"URL":"https:\/\/doi.org\/10.3390\/ijms14047880","relation":{},"ISSN":["1422-0067"],"issn-type":[{"value":"1422-0067","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,4,11]]}}}