Effects of solvents on the stability and morphology of CTAB-stabilized silver nanoparticles
Khan, Z; Al-Thabaiti, SA; Obaid, AY; Khan, ZA; Al-Youbi, AO
| HERO ID | 1108849 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Effects of solvents on the stability and morphology of CTAB-stabilized silver nanoparticles |
| Authors | Khan, Z; Al-Thabaiti, SA; Obaid, AY; Khan, ZA; Al-Youbi, AO |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 390 |
| Issue | 1-3 |
| Page Numbers | 120-125 |
| Abstract | Abstract: We report the effects of polar-protic and polar-aprotic SOLVENT*s on absorption spectra and particle size of surfactant stabilized silver nanoparticles. Cysteine and cetylteimethylammonium bromide, CTAB were used as the reducing and stabilizing agents, respectively. The prepared orange color silver sols possess an unusually narrow Plasmon absorption shoulder at 450nm. The absorbance and shape of this shoulder are affected by protic (methanol, ethanol) and aprotic (acetonitrile, DMF, DMSO and 1,4-dioxane) SOLVENT*s. The observed results are interpreted in terms of the dielectric constant, boiling point, hydrogen bonding, solubilization and donation of electron density from the silver particles to the SOLVENT*s. Absorbance increases with increasing the dielectric constants of reaction mixture. The particle size decreases with decreasing the hydrophobic character of protic SOLVENT*s: particle size=70, 58 and 39nm in presence and absence of SOLVENT*s (ethanol and methanol), respectively. ds: Internet resource her supplied data e field[29]: 1,4-Dioxane |
| Doi | 10.1016/j.colsurfa.2011.09.015 |
| Wosid | WOS:000297960400015 |
| Url | https://linkinghub.elsevier.com/retrieve/pii/S0927775711005784 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000297960400015 |
| Is Public | Yes |
| Keyword | Cysteine; Silver nanoparticles; Dielectric constant; Solvents |
| Is Qa | No |