Trimetallic PdCuAu Nanoparticles for Temperature Sensing and Fluorescence Detection of H2O2 and Glucose

Abstract

The design of palladium-based nanostructures has good prospects in various applications. This paper reports a simple one-step synthesis method of PdCuAu nanoparticles (PdCuAu NPs) prepared directly in aqueous solution. PdCuAu NPs have attracted much attention owing to their unique synergistic electronic effect, optical and catalytic performance. As temperature sensor, PdCuAu NPs are sensitive to the fluorescence intensity change in the temperature range of 4-95 • C, which is due to its unique optical properties. The prepared PdCuAu NPs have excellent catalytic performance for peroxidase-like enzymes. It can catalyze TMB rapidly in the presence of hydrogen peroxide and oxidize it to visible blue product (oxTMB). Based on its unique peroxidase-like properties, this study used PdCuAu NPs colorimetric platform detection of hydrogen peroxide and glucose. The linear ranges of hydrogen peroxide and glucose were 0.1-300 µM and 0.5-500 µM, respectively, and the detection limits (LOD) were 5 and 25 nM, respectively. This simple and rapid method provides a good prospect for the detection of H 2 O 2 and glucose in practical applications.

Multimetallic Nanoparticles as Alternative Antimicrobial Agents: Challenges and Perspectives

“…Consequently, trimetallic NPs, such as Fe/Co/Ni supported on multiwalled carbon nanotubes (MWCNTs), show efficient and enhanced bifunctional performance for the oxygen reduction and oxygen evolution reactions [65]. Similarly, Cu/Au/Pt, with high catalytic activity and excellent killing performance for biosensing and cancer theranostics [66], and Pd/Cu/Au, as excellent temperature sensors and fluorescence detectors of H 2 O 2 and glucose [67], have attracted attention as promising catalysts. Hence, trimetallic NPs exhibit potent antibacterial activity and have been found to be more effective agents than bimetallic and monometallic NPs, even at lower metal concentrations.…”

Trimetallic Nanoparticles: Greener Synthesis and Their Applications

“…Interestingly, Pd-Cu-Au trimetallic nanomaterials with good stability were synthesized by the simple one-pot method, and exhibited potential as temperature sensors for sensitive detection of changes in fluorescence intensity (in about 4–95 °C temperature range), because of their unique optical characteristic [ 122 ]. Additionally, the trimetallic NPs showed significant catalytic operation for peroxidase-like enzymes; they could catalyze 3,3’,5,5’-tetramethylbenzidine (TMB) promptly in the presence of H 2 O 2 and oxidatively convert it to a visible blue product (oxTMB).…”

“…Additionally, the trimetallic NPs showed significant catalytic operation for peroxidase-like enzymes; they could catalyze 3,3’,5,5’-tetramethylbenzidine (TMB) promptly in the presence of H 2 O 2 and oxidatively convert it to a visible blue product (oxTMB). Thus, these trimetallic NPs can be employed as colorimetric platform for detection of H 2 O 2 (0.1–300 μM, LOD = 5 nM) and glucose (0.5–500 μM, LOD = 25 nM) ( Figure 12 ) [ 122 ].…”

“… Pd-Cu-Au trimetallic NPs synthesized to be applied as temperature sensors and for colorimetric H 2 O 2 detection as well as glucose with enzyme mimic. Reused from [ 122 ]. An Open Access Article, (CC BY 4.0).…”

Hydrogen Peroxide Detection by Super-Porous Hybrid CuO/Pt NP Platform: Improved Sensitivity and Selectivity

“…Various techniques have been developed for the H 2 O 2 detection including the colorimetric assay [ 3 , 4 ], fluorescence detection [ 5 , 6 ], electrochemical luminescence [ 7 , 8 ], surface-enhanced Raman spectroscopy (SERS) [ 9 , 10 ] etc. Among these, electrochemical sensing [ 11 ] can offer one of the handiest approaches for the detection of H 2 O 2 due to its high sensitivity, fast response, precision and simple operation.…”