Next Article in Journal
Improvement in Color-Conversion Efficiency and Stability for Quantum-Dot-Based Light-Emitting Diodes Using a Blue Anti-Transmission Film
Next Article in Special Issue
DNA-Assisted Assembly of Gold Nanostructures and Their Induced Optical Properties
Previous Article in Journal
Colloidal Synthesis of CsX Nanocrystals (X = Cl, Br, I)
Open AccessArticle

Green Preparation of Ag-Au Bimetallic Nanoparticles Supported on Graphene with Alginate for Non-Enzymatic Hydrogen Peroxide Detection

by Li Zhao 1, Yesheng Wang 1, Xihui Zhao 1,2,*, Yujia Deng 1, Qun Li 1,* and Yanzhi Xia 2,3
1
School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
2
State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
3
Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Bionbased Materials, Qingdao University, Qingdao 266071, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2018, 8(7), 507; https://doi.org/10.3390/nano8070507
Received: 13 June 2018 / Revised: 2 July 2018 / Accepted: 5 July 2018 / Published: 8 July 2018
(This article belongs to the Special Issue Synthesis and Applications of Functionalized Gold Nanosystems)
In this work, a facile, environmentally friendly method was demonstrated for the synthesis of Ag-Au bimetallic nanoparticles (Ag-AuNPs) supported on reduced graphene oxide (RGO) with alginate as reductant and stabilizer. The prepared Ag-AuNPs/RGO was characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that uniform, spherical Ag-AuNPs was evenly dispersed on graphene surface and the average particle size is about 15 nm. Further, a non-enzymatic sensor was subsequently constructed through the modified electrode with the synthesized Ag-AuNPs/RGO. The sensor showed excellent performance toward H2O2 with a sensitivity of 112.05 μA·cm−2·mM−1, a linear range of 0.1–10 mM, and a low detection limit of 0.57 μM (S/N = 3). Additionally, the sensor displayed high sensitivity, selectivity, and stability for the detection of H2O2. The results demonstrated that Ag-AuNPs/RGO has potential applications as sensing material for quantitative determination of H2O2. View Full-Text
Keywords: Alginate; Ag-AuNPs/RGO; Non-enzymatic sensor; Hydrogen peroxide Alginate; Ag-AuNPs/RGO; Non-enzymatic sensor; Hydrogen peroxide
Show Figures

Graphical abstract

MDPI and ACS Style

Zhao, L.; Wang, Y.; Zhao, X.; Deng, Y.; Li, Q.; Xia, Y. Green Preparation of Ag-Au Bimetallic Nanoparticles Supported on Graphene with Alginate for Non-Enzymatic Hydrogen Peroxide Detection. Nanomaterials 2018, 8, 507.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop