کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1666454 | 1518078 | 2012 | 6 صفحه PDF | دانلود رایگان |
Excellent and recyclable surface-enhanced Raman scattering substrates were fabricated via a one-step route: reducing gold ions to Au nanoparticles with silicon–hydrogen bond and assembling them in-situ on the Si wafer. Gold nanoparticles with the average size of 22 nm were epitaxially grown and uniformly assembled. The substrate exhibited excellent surface-enhanced Raman effect in the low concentration detection (1 × 10− 10 M) of Rhodamine 6G with relative standard deviation of < 20%, and sustained stable enhancement efficiency in the recycle usage. The substrates were also employed to detect Sudan I dye with distinguished sensitivity and uniformity. More significantly, these substrates kept Au nanoparticles from growing larger during the Raman detection, compared with the conventional substrates, indicating it was a meaningful possibility for the practical applications.
► A fast one-step route to fabricate surface-enhanced Raman scattering substrates
► The substrates were used to detect hazardous materials: Rhodamine 6G and Sudan I.
► The substrates exhibited excellent sensitivity and uniformity.
► The substrates may be recycled.
Journal: Thin Solid Films - Volume 526, 30 December 2012, Pages 133–138