کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7866172 | 1509131 | 2018 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Green approach for in-situ growth of highly-ordered 3D flower-like CuS hollow nanospheres decorated on nitrogen and sulfur co-doped graphene bionanocomposite with enhanced peroxidase-like catalytic activity performance for colorimetric biosensing of gluco
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We describe a green and facile hydrothermal route to synthesize highly ordered 3D flower-like hierarchical CuS hollow nanospheres@N-S-rGO bionanocomposite used to detect glucose. After synthesis and comprehensive characterization of all potential catalysts, the peroxidase-like activity of 3D CuS NSs@N-S-rGO is compared extensively with pure 3D CuS NSs, N-S-rGO, N-rGO, and GO to monitor the effect of each modification and treatment on their catalytic properties. The results indicate promising peroxidase activity of 3D CuS NSs@N-S-rGO by possessing the highest catalytic activity and the Michaelis constant of ~93.5 times lower and 9.7 times higher than that of reported for HRP, respectively. The bionanocomposite is used to detect glucose in serum with and without light. The results show a remarkable enhancement in the limit of detection for glucose from 0.3â¯Î¼M to 0.075â¯Î¼M (40 folds) with visible light that can be attributed to the fast electron transfer on the surface of 3D CuS NSs@N-S-rGO and the synergistic interaction of 3D CuS NSs and N-S-rGO. The method was further applied to the colorimetric detection of glucose in human serum and showed high selectivity. Our result also show that this method based on 3D CuS NSs@N-S-rGO is economical, reliable, feasible, and highly efficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 90, 1 September 2018, Pages 576-588
Journal: Materials Science and Engineering: C - Volume 90, 1 September 2018, Pages 576-588
نویسندگان
Farzin Nekouei, Shahram Nekouei, Omid Jashnsaz, Mehran Pouzesh,