scholarly journals Spontaneous Growth of Prussian Blue Nanoparticles on Three Dimensional Porous PEDOT for Enhanced Catalytic Reduction and Sensitive Detection of Hydrogen Peroxide

2017 ◽  
pp. 4428-4443 ◽  
Author(s):  
Min Yang ◽  
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Catalytic Reduction ◽  
Three Dimensional ◽  
Sensitive Detection ◽  
Spontaneous Growth ◽  
Prussian Blue Nanoparticles

scholarly journals Plasmonic Imaging of Electrochemical Reactions at Individual Prussian Blue Nanoparticles

2021 ◽  
Vol 9 ◽  
Author(s):  
Adaly Garcia ◽  
Kinsley Wang ◽  
Fatima Bedier ◽  
Miriam Benavides ◽  
Zijian Wan ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Catalytic Reduction ◽  
Catalyst Activity ◽  
Ensemble Methods ◽  
Type I ◽  
Iron Cyanide ◽  
Prussian Blue Nanoparticles ◽  
Major Factors ◽  
The Individual

Prussian blue is an iron-cyanide-based pigment steadily becoming a widely used electrochemical sensor in detecting hydrogen peroxide at low concentration levels. Prussian blue nanoparticles (PBNPs) have been extensively studied using traditional ensemble methods, which only provide averaged information. Investigating PBNPs at a single entity level is paramount for correlating the electrochemical activities to particle structures and will shed light on the major factors governing the catalyst activity of these nanoparticles. Here we report on using plasmonic electrochemical microscopy (PEM) to study the electrochemistry of PBNPs at the individual nanoparticle level. First, two types of PBNPs were synthesized; type I synthesized with double precursors method and type II synthesized with polyvinylpyrrolidone (PVP) assisted single precursor method. Second, both PBNPs types were compared on their electrochemical reduction to form Prussian white, and the effect from the different particle structures was investigated. Type I PBNPs provided better PEM sensitivity and were used to study the catalytic reduction of hydrogen peroxide. Progressively decreasing plasmonic signals with respect to increasing hydrogen peroxide concentration were observed, demonstrating the capability of sensing hydrogen peroxide at a single nanoparticle level utilizing this optical imaging technique.

scholarly journals Organotrialkoxysilane-Functionalized Prussian Blue Nanoparticles-Mediated Fluorescence Sensing of Arsenic(III)

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1145
Author(s):  
Prem. C. Pandey ◽  
Shubhangi Shukla ◽  
Roger J. Narayan
Keyword(s):  
Prussian Blue ◽  
Chemical Reduction ◽  
Low Cost ◽  
Three Dimensional ◽  
Heterogeneous Systems ◽  
Lattice Points ◽  
Radiative Energy ◽  
Fluorescence Sensing ◽  
Emission Signal ◽  
Prussian Blue Nanoparticles

Prussian blue nanoparticles (PBN) exhibit selective fluorescence quenching behavior with heavy metal ions; in addition, they possess characteristic oxidant properties both for liquid–liquid and liquid–solid interface catalysis. Here, we propose to study the detection and efficient removal of toxic arsenic(III) species by materializing these dual functions of PBN. A sophisticated PBN-sensitized fluorometric switching system for dosage-dependent detection of As3+ along with PBN-integrated SiO2 platforms as a column adsorbent for biphasic oxidation and elimination of As3+ have been developed. Colloidal PBN were obtained by a facile two-step process involving chemical reduction in the presence of 2-(3,4-epoxycyclohexyl)ethyl trimethoxysilane (EETMSi) and cyclohexanone as reducing agents, while heterogeneous systems were formulated via EETMSi, which triggered in situ growth of PBN inside the three-dimensional framework of silica gel and silica nanoparticles (SiO2). PBN-induced quenching of the emission signal was recorded with an As3+ concentration (0.05–1.6 ppm)-dependent fluorometric titration system, owing to the potential excitation window of PBN (at 480–500 nm), which ultimately restricts the radiative energy transfer. The detection limit for this arrangement is estimated around 0.025 ppm. Furthermore, the mesoporous and macroporous PBN-integrated SiO2 arrangements might act as stationary phase in chromatographic studies to significantly remove As3+. Besides physisorption, significant electron exchange between Fe3+/Fe2+ lattice points and As3+ ions enable complete conversion to less toxic As5+ ions with the repeated influx of mobile phase. PBN-integrated SiO2 matrices were successfully restored after segregating the target ions. This study indicates that PBN and PBN-integrated SiO2 platforms may enable straightforward and low-cost removal of arsenic from contaminated water.

scholarly journals Development of a Hydrogen Peroxide Sensor Based on Screen-Printed Electrodes Modified with Inkjet-Printed Prussian Blue Nanoparticles

Sensors ◽  
2014 ◽  
Vol 14 (8) ◽  
pp. 14222-14234 ◽  
Author(s):  
Stefano Cinti ◽  
Fabiana Arduini ◽  
Danila Moscone ◽  
Giuseppe Palleschi ◽  
Anthony Killard
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Hydrogen Peroxide Sensor ◽  
Screen Printed Electrodes ◽  
Prussian Blue Nanoparticles ◽  
Screen Printed

Prussian Blue Modified Ferritin Nanoparticles as Peroxidase and Catalase Mimetics and their Application in Glucose Detection

2013 ◽  
Vol 562-565 ◽  
pp. 1333-1339 ◽  
Author(s):  
Wei Zhang ◽  
Yu Zhang ◽  
Ning Gu
Keyword(s):  
Catalytic Activity ◽  
Prussian Blue ◽  
Ferric Iron ◽  
Three Dimensional ◽  
High Catalytic Activity ◽  
Glucose Detection ◽  
Biological Functions ◽  
Nanoscale Structures ◽  
Prussian Blue Nanoparticles ◽  
Iron Oxide Core

Prussian blue nanoparticles (PBNPs) have been certified a kind of mimetic enzyme possesses the advantages of stability, high catalytic activity and low prices. Ferritins are natural nanoscale structures with unique three-dimensional structures and biological functions. In this context, we synthesized PBNPs on the surface of the iron oxide core of ferritin taking use of the ferric iron of the core, we also intended to retain the specificity of ferritin for some biological use. Our results show the resulting nanostructures (Prussian blue-ferritin nanoparticles, PB-Ft NPs) got very small size and relatively high catalytic activity , furthermore, PB-Ft NPs successfully combined the intrinsic enzyme mimetic activity of PBNPs and the specificity to tumor cells of ferritin. The peroxidase-like activity and catalase-like activity of PB-Ft NPs were studied. Peroxidase-like activity which fits well the Michaelis-Menten kinetics was found strongly depending on pH, temperature and the concentration of PB-Ft NPs. Then a sensitive method for glucose detection was developed using glucose oxidase (GOx) and PB-Ft NPs. PB-Ft NPs displayed catalase-like activity in PH higher than 5.0, the generated oxygen was measured by the dissolved oxygen electrode.Enzyme-linked immunosorbent assay (ELISA) shows PB-Ft NPs possess both specificity and peroxidase-like activity.

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe3+-, Cu2+-, or Ni2+-Modified Prussian Blue Nanoparticles

2015 ◽  
Vol 15 (9) ◽  
pp. 4749-4757 ◽  
Author(s):  
Fernando Silvio de Souza ◽  
Thiago Guimaraes Costa ◽  
Mateus Joao Feldhaus ◽  
Bruno Szpoganicz ◽  
Almir Spinelli
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Amperometric Sensors ◽  
Prussian Blue Nanoparticles

Size‐Dependent and Self‐Catalytic Gold@Prussian Blue Nanoparticles for the Electrochemical Detection of Hydrogen Peroxide

2020 ◽  
Vol 7 (18) ◽  
pp. 3818-3823
Author(s):  
Minwei Zhang ◽  
Wenrui Zhang ◽  
Christian Engelbrekt ◽  
Chengyi Hou ◽  
Nan Zhu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Electrochemical Detection ◽  
Size Dependent ◽  
Prussian Blue Nanoparticles
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