Comparative study of semiconductor TiO2 and noble metal Ag substrates: The differences between chemical enhancement and electromagnetic enhancement in SERS

2018 ◽  
Vol 49 (8) ◽  
pp. 1257-1264 ◽  
Author(s):  
Xin Jiang ◽  
Yongliang Chen ◽  
Juan Du ◽  
Xiuling Li ◽  
Yu Shen ◽  
...  
Keyword(s):  
Comparative Study ◽  
Noble Metal ◽  
Electromagnetic Enhancement ◽  
Chemical Enhancement

Noble metal-graphite mineralization: A comparative study of the carbonaceous granite-gneiss complex and shales of the Russian Far East

2013 ◽  
Vol 53 ◽  
pp. 276-286 ◽  
Author(s):  
Alexander I. Khanchuk ◽  
Victor P. Nechaev ◽  
Laura P. Plyusnina ◽  
Nikolay V. Berdnikov ◽  
Vladimir P. Molchanov ◽  
...  
Keyword(s):  
Comparative Study ◽  
Noble Metal ◽  
Russian Far East ◽  
Far East ◽  
Granite Gneiss ◽  
Gneiss Complex ◽  
The Russian Far East

Comparative study of the adsorption of SO42-/HSO4- and Cl− anions on smooth and rough surfaces of noble metal electrodes by in situ radiotracer thin gap method

2014 ◽  
Vol 712 ◽  
pp. 151-160 ◽  
Author(s):  
Kata Berkesi ◽  
Dávid Horváth ◽  
Zoltán Németh ◽  
Kálmán Varga ◽  
László Péter ◽  
...  
Keyword(s):  
Comparative Study ◽  
Noble Metal ◽  
Rough Surfaces ◽  
Metal Electrodes

Surface Enhanced Magneto-Optics in Noble Metal / Ferromagnetic Metal Multilayers

1995 ◽  
Vol 384 ◽  
Author(s):  
V. I. Safarov ◽  
V. A. Kosobukin ◽  
C. Hermann ◽  
G. Lampel ◽  
J. Peretti ◽  
...  
Keyword(s):  
Noble Metal ◽  
Figure Of Merit ◽  
Signal To Noise Ratio ◽  
Ferromagnetic Metal ◽  
Multilayer Thin Films ◽  
Kerr Rotation ◽  
Resonant Coupling ◽  
Electromagnetic Enhancement ◽  
Surface Enhanced ◽  
Resonant Feature

ABSTRACTWe present an electromagnetic enhancement mechanism for the magneto-optical response of noble metal / ferromagnetic metal multilayer thin films. When such a structure is illuminated in total reflection condition, the resonant coupling of light with the noble metal surface plasmons gives rise to an amplification of the magneto-optically induced component of the light electric field. The experimental results obtained on a 30nm-thick Au / Co / Au model system show that this resonant feature observed in the Kerr rotation and ellipticity corresponds to a strong enhancement of the magneto-optical figure of merit and signal-to-noise ratio.

scholarly journals Dehydroaromatization of methane over noble metal loaded Mo/H-ZSM-5 zeolite catalysts

2021 ◽  
Author(s):  
Themba E. Tshabalala ◽  
Neil J. Coville ◽  
James A. Anderson ◽  
Michael S. Scurrell
Keyword(s):  
Comparative Study ◽  
Noble Metal ◽  
Methane Conversion ◽  
Catalytic Performance ◽  
Zeolite Catalysts ◽  
Product Selectivity ◽  
Total Reduction

AbstractDehydroaromatization of methane (MDA) reaction was investigated over platinum modified Mo/H-ZSM-5 catalysts which were pre-carbided at 750 °C. The influence of platinum on the catalytic performance and product selectivity of Mo/H-ZSM-5 catalysts for the MDA reaction at 700 °C were studied. The presence of platinum led to a slight decrease in methane conversion from 7.5 to 4.2%. Aromatic selectivities above 90% were obtained with catalysts containing low platinum loadings (0.5 and 1.0 wt.%), with benzene being the most prominent product. A decrease in coke selectivity and coke deposits was noted with the platinum modified Mo/H-ZSM-5 zeolite catalysts. A comparative study was performed to compare platinum, palladium and ruthenium promoted Mo/H-ZSM-5 zeolite catalysts with un-promoted Mo/H-ZSM-5. The ruthenium promoted catalyst proved to be superior in catalytic performance, with a higher methane conversion obtained than that found for platinum promoted and palladium promoted Mo/H-ZSM-5 catalysts. Benzene selectivity of about 60% was obtained for ruthenium and palladium promoted Mo/H- ZSM-5 catalysts and the total aromatic selectivity was maintained at 90%. TGA results showed a total reduction of 50% by weight of carbon deposited on the promoted Mo/H-ZSM-5 catalyst. Graphic abstract

A novel sensitive ACNTs-MoO2 SERS substrate boosted by synergistic enhancement effect

2021 ◽  
Author(s):  
Xiaoyu Zhou ◽  
Xiaoli Zhao ◽  
Shuo Gu ◽  
Kaiyue Gao ◽  
Fazhi Xie ◽  
...  
Keyword(s):  
Enhancement Effect ◽  
Sers Substrate ◽  
Electromagnetic Enhancement ◽  
Chemical Enhancement ◽  
Synergistic Enhancement

Integrating chemical enhancement (CM) and electromagnetic enhancement (EM) into one substrate is of great significance, but as far as we know, little research has been done on this project. In...

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