کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4985409 | 1454508 | 2017 | 8 صفحه PDF | دانلود رایگان |

This article reports a surface modification of gold nanoparticles with water soluble polyoxometalate, V10O286â (decavanadate, V10). Two sizes of citrate-capped gold nanoparticles AuNP-Citrate-S (â¼11Â nm) and AuNP-Citrate-L (â¼46Â nm) were modified with V10 in aqueous media to form AuNP-V10-S and AuNP-V10-L, respectively. Both AuNP-V10-S and AuNP-V10-L were found to be significantly better than their citrate counterparts in strengthening Raman vibrational signals of analyte molecule. All the nanoparticles were characterized by UV-visible and Fourier transform infrared (FTIR) spectroscopies, dynamic light scattering (DLS), transmission electron microscopy (TEM) and energy dispersive X-ray (EDX) line analysis. We demonstrate that AuNP-V10-L is excellent surface-enhanced Raman scattering (SERS) substrate for a Raman-active analyte molecule at nanomolar concentrations.
174
Journal: Journal of Colloid and Interface Science - Volume 487, 1 February 2017, Pages 209-216