Crystal Structure‐ and Morphology‐Driven Electrochemistry of Iron Oxide Nanoparticles in Hydrogen Peroxide Detection

2018 ◽  
pp. 1801549 ◽  
Author(s):  
Petr Jakubec ◽  
Ondřej Malina ◽  
Jiří Tuček ◽  
Ivo Medřík ◽  
Zdenka Medříková ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Peroxide ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Structure And Morphology ◽  
Hydrogen Peroxide Detection

Correlation between physicochemical properties of superparamagnetic iron oxide nanoparticles and their reactivity with hydrogen peroxide

2020 ◽  
Vol 98 (10) ◽  
pp. 601-608
Author(s):  
Taraneh Javanbakht ◽  
Sophie Laurent ◽  
Dimitri Stanicki ◽  
Mathieu Frenette
Keyword(s):  
Hydrogen Peroxide ◽  
Iron Oxide ◽  
Physicochemical Properties ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Surface Modifications ◽  
Oxide Nanoparticles ◽  
Amine Groups ◽  
The Comparative Study ◽  
Positively Charged

The present study focuses on the effects of the physicochemical properties of superparamagnetic PEG-modified, positively charged, and negatively charged iron oxide nanoparticles (SPIONs) on their reactivity with hydrogen peroxide. Our hypothesis was that the reactivity of SPIONs in this reaction would depend on their surface properties. The comparative study of the nanoparticles with DLS and TEM revealed the average sizes of PEG-modified, positively charged, and negatively charged SPIONs. We observed that the reactivity of negatively charged SPIONs with hydrogen peroxide was less than that of positively charged SPIONs and that of these second nanoparticles was less than that of PEG-modified SPIONs. This difference in the reactivity of these SPIONs with hydrogen peroxide was attributed to the presence of carboxyl or amine groups on their surface. However, the values of the rate constants of the reactions of PEG-modified, positively charged, and negatively charged SPIONs with hydrogen peroxide showed that the reaction of negatively charged SPIONs with hydrogen peroxide was more rapid than that of PEG-modified SPIONs and the reaction of these second SPIONs with hydrogen peroxide was more rapid than that of positively charged SPIONs. The surface study of the SPIONs using XPS showed that the high-resolution spectra of these nanoparticles changed after reaction with hydrogen peroxide, which indicates their surface modifications. These investigations can help develop more appropriate nanoparticles with controlled physicochemical properties.

Hydrogen peroxide biosensor utilizing a hybrid nano-interface of iron oxide nanoparticles and carbon nanotubes to assess the quality of milk

2015 ◽  
Vol 215 ◽  
pp. 166-173 ◽  
Author(s):  
Kavitha Thandavan ◽  
Sakthivel Gandhi ◽  
Noel Nesakumar ◽  
Swaminathan Sethuraman ◽  
John Bosco Balaguru Rayappan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Hydrogen Peroxide Biosensor ◽  
Quality Of Milk

A novel application of iron oxide nanoparticles for detection of hydrogen peroxide in acid rain

2008 ◽  
Vol 62 (24) ◽  
pp. 3972-3974 ◽  
Author(s):  
Jie Zhuang ◽  
Jinbin Zhang ◽  
Lizeng Gao ◽  
Yu Zhang ◽  
Ning Gu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Iron Oxide ◽  
Acid Rain ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles

Effects of irradiation energy and nanoparticle concentrations on the structure and morphology of laser sintered magnesia with alumina and iron oxide nanoparticles

2020 ◽  
Vol 46 (6) ◽  
pp. 7850-7860 ◽  
Author(s):  
L.V. García-Quiñonez ◽  
M.I. Mendivil-Palma ◽  
T.K. Das Roy ◽  
G.A. Castillo-Rodríguez ◽  
C. Gómez-Rodríguez ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Structure And Morphology ◽  
Irradiation Energy
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