کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6663085 | 463241 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Al2O3-modified surface-enhanced Raman scattering-active gold nanoparticles on substrates by using sonoelectrochemical pulse deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
As shown in the literature, many methods have been developed to improve signals, reproducibility and stabilities of surface-enhanced Raman scattering (SERS) for their reliable applications. However, the fabrication can be laborious. In this work, we propose a simple pathway to prepare SERS-active substrates with Al2O3-modified Au nanoparticles (NPs) by sonoelectrochemical deposition-dissolution cycles (SEDDCs). Based on probe molecules of Rhodamine 6G (R6G), an enhancement factor of 4.4 Ã 108 and a detection limit of 2 Ã 10â14 M were observed on the proposed SERS-active substrates. The reproducibility and stabilities of the proposed SERS-active substrates are satisfactory. Also, the prepared Al2O3-modified Au NPs-deposited substrate can markedly improve the thermal stability by raising the operation temperature over 50 °C, as compared with unmodified Au NPs-deposited substrate. Meanwhile, aging of SERS effect observed on this proposed substrate is slight in an atmosphere of 50% RH and 20% (v/v) O2 at 30 °C for 60 day.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 696, 1 May 2013, Pages 38-44
Journal: Journal of Electroanalytical Chemistry - Volume 696, 1 May 2013, Pages 38-44
نویسندگان
Chun-Chao Chang, Chung-Chin Yu, Yu-Chuan Liu, Kuang-Hsuan Yang,