Investigation of surface passivation process on magnetic nanoparticles by Raman spectroscopy

2006 ◽  
Vol 600 (18) ◽  
pp. 3642-3645 ◽  
Author(s):  
T.F.O. Melo ◽  
S.W. da Silva ◽  
M.A.G. Soler ◽  
E.C.D. Lima ◽  
P.C. Morais
Keyword(s):  
Raman Spectroscopy ◽  
Magnetic Nanoparticles ◽  
Surface Passivation ◽  
Passivation Process

scholarly journals Electrochemistry and surface-enhanced Raman spectroscopy of CTAB modulated interactions of magnetic nanoparticles with biomolecules

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3628-3634 ◽  
Author(s):  
Delina Joseph ◽  
Raul D. Rodriguez ◽  
Akash Verma ◽  
Elaheh Pousaneh ◽  
Dietrich R. T. Zahn ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Cyclic Voltammetry ◽  
Magnetic Nanoparticles ◽  
Electrochemical Behavior ◽  
Surface Enhanced Raman Spectroscopy ◽  
Molecular Associations ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Insight Into

In this study, cyclic voltammetry was used to unearth the electrochemical behavior of MNPs/CTAB and their interaction with biomolecules whereas SERS provided an insight into the mode of interaction in these molecular associations.

scholarly journals An enhanced surface passivation effect in InGaN/GaN disk-in-nanowire light emitting diodes for mitigating Shockley–Read–Hall recombination

Nanoscale ◽  
2015 ◽  
Vol 7 (40) ◽  
pp. 16658-16665 ◽  
Author(s):  
Chao Zhao ◽  
Tien Khee Ng ◽  
Aditya Prabaswara ◽  
Michele Conroy ◽  
Shafat Jahangir ◽  
...  
Keyword(s):  
Radiative Recombination ◽  
Light Emitting Diodes ◽  
Surface Passivation ◽  
Light Emitting ◽  
Passivation Process ◽  
Enhanced Surface

An organic passivation process for nitride nanowires was first proposed to reduce Shockley–Read–Hall non-radiative recombination of nanowire light emitting diodes.

scholarly journals Effect of surface passivation process for AlGaN/GaN HEMT heterostructures using phenol functionalized-porphyrin based organic molecules

2018 ◽  
Vol 124 (19) ◽  
pp. 195702 ◽  
Author(s):  
Manjari Garg ◽  
Tejas Rajendra Naik ◽  
Ravi Pathak ◽  
Valipe Ramgopal Rao ◽  
Che-Hao Liao ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Surface Passivation ◽  
Gan Hemt ◽  
Passivation Process ◽  
Effect Of Surface

Temperature Induced Formation of Goethite from Magnetite

2015 ◽  
Vol 1109 ◽  
pp. 191-194 ◽  
Author(s):  
Mohammad Ziaul Karim ◽  
Md. Eaqub Ali ◽  
Sharifah Bee Abd Hamid
Keyword(s):  
Raman Spectroscopy ◽  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Oxide Phase ◽  
Precipitation Method ◽  
Magnetite Nanoparticle ◽  
Precipitation Temperature ◽  
The Past ◽  
Wide Range ◽  
Co Precipitation

Over the past few decades, magnetite nanoparticle has been profusely because of their wide range of applications. The co-precipitation method is the simplest and suitable method for the preparation of this nanoparticle. It goes through several reaction steps for the formation of various phases of magnetic nanoparticles. Goethite (FeO(OH)), is one of the intermediates, and it drastically suppressed with the magnetic properties of the Fe oxide phase. In our study, it was shown that at 30°C temperature pure magnetic nanoparticles is formed. But when precipitation temperature is increase to 80°C, goethite is also present with the magnetite nanoparticle. Hence, it is deduced that precipitation temperature plays a significant role in accelerating goethite phase formation when synthesising magnetite nanoparticle by this precipitation method. Data obtained from Raman spectroscopy and XRD supported the above observation.

Ni@Au nanoparticles for surface enhanced Raman spectroscopy based ultrasensitive magnetic immunoassay on aflatoxin B1

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61325-61333 ◽  
Author(s):  
Congwei Fang ◽  
Chao Wei ◽  
Minmin Xu ◽  
Yaxian Yuan ◽  
Renao Gu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Magnetic Nanoparticles ◽  
Aflatoxin B1 ◽  
Au Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Trace Residue

A facile approach for the fabrication of Ni@Au magnetic nanoparticles was developed as the immune substrates for the competitive magnetic immunoassay. The approach was used for quasi-quantitatively detection on the trace residue of AFB1in foods.

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