کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4985409 1454508 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Regular ArticlePolyoxovanadate fabricated gold nanoparticles: Application in SERS
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Regular ArticlePolyoxovanadate fabricated gold nanoparticles: Application in SERS
چکیده انگلیسی

This article reports a surface modification of gold nanoparticles with water soluble polyoxometalate, V10O286− (decavanadate, V10). Two sizes of citrate-capped gold nanoparticles AuNP-Citrate-S (∼11 nm) and AuNP-Citrate-L (∼46 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.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 487, 1 February 2017, Pages 209-216
نویسندگان
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