کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7141845 | 1462035 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hierarchical MoS2-microspheres decorated with 3D AuNPs arrays for high-efficiency SERS sensing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three-dimensional (3D) distribution Au-nanoparticles (AuNPs) arrays have enabled surface-enhanced Raman scattering (SERS) for a variety of analytical applications due to the spatial-distribution plasmon. Herein, we present a new route for synthesis of 3D SERS powder, hierarchical MoS2-microspheres (MoS2-MS) decorated with “cauliflower-like” AuNPs arrays (CF-AuNPs), for high-efficiency molecular detection. Finite element simulations have shown that the spatial-distribution nanogaps can generate intensive SERS hot spots. Using the CF-AuNPs@MoS2-MS for in-situ molecular detection, not only have 10â14Â M rhodamine 6G or methylene blue been identified with different laser wavelength excitation (532 and 633Â nm), but also various metabolites in human early-morning urine were recognized. Moreover, the wafer-scale flexible SERS substrates consisted of CF-AuNPs@MoS2-MS inset cellulose acetate membrane (CAM) were fabricated via suction filtration method, showing good SERS sensitivity for adenosine detection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 255, Part 2, February 2018, Pages 1407-1414
Journal: Sensors and Actuators B: Chemical - Volume 255, Part 2, February 2018, Pages 1407-1414
نویسندگان
Hengwei Qiu, Minqiang Wang, Le Li, Junjie Li, Zhi Yang, Minghui Cao,