scholarly journals Reversible oxidation and reduction of gold-supported iron oxide islands at room temperature

2020 ◽  
Vol 152 (7) ◽  
pp. 074710
Author(s):  
Yixuan Jiang ◽  
Yaguang Zhu ◽  
Dechun Zhou ◽  
Zhao Jiang ◽  
Nan Si ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Room Temperature ◽  
Supported Iron

Oxidative dehydrogenation of thiols to disulfides at room temperature using silica supported iron oxide as an efficient solid catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95753-95759 ◽  
Author(s):  
Susmita Paul ◽  
S. M. Islam
Keyword(s):  
Iron Oxide ◽  
Oxidative Dehydrogenation ◽  
Room Temperature ◽  
Solid Catalyst ◽  
Reaction Conditions ◽  
Selective Transformation ◽  
Supported Iron

Selective transformation of thiols to disulfides by oxidative dehydrogenation has been described using easily prepared and recyclable silica supported iron oxide under green reaction conditions.

Preparation of Highly Dispersed Iron Oxide Nanoparticles in Amine-Modified SBA-15

2005 ◽  
Vol 876 ◽  
Author(s):  
Bing Tan ◽  
Wentao Xu ◽  
Alan Dozier ◽  
Stephen E. Rankin
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Room Temperature ◽  
Oxide Nanoparticles ◽  
Amine Functionalized ◽  
Highly Dispersed ◽  
Uniform Diameter ◽  
Supported Iron

AbstractSilica-supported iron oxide nanoparticles are prepared by precipitation within the pores of amine-functionalized SBA-15 silica. The loading of the iron oxide possible by this method is at least 11 wt%. STEM and TEM images show that the supported particles have a uniform diameter (average ∼ 4.0 nm) and are well dispersed. The supported iron oxide nanoparticles are amorphous after calcination at 300°C and, consistent with their nanoscale dimensions, are superparamagnetic at room temperature.

scholarly journals Properties of Silicone Rubber-Based Composites Reinforced with Few-Layer Graphene and Iron Oxide or Titanium Dioxide

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1550
Author(s):  
Vineet Kumar ◽  
Anuj Kumar ◽  
Minseok Song ◽  
Dong-Joo Lee ◽  
Sung-Soo Han ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Titanium Dioxide ◽  
Iron Oxide ◽  
Stress Relaxation ◽  
Silicone Rubber ◽  
Room Temperature ◽  
Relaxation Rates ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Mechanical Actuation

The increasing demand for polymer composites with novel or improved properties requires novel fillers. To meet the challenges posed, nanofillers such as graphene, carbon nanotubes, and titanium dioxide (TiO2) have been used. In the present work, few-layer graphene (FLG) and iron oxide (Fe3O4) or TiO2 were used as fillers in a room-temperature-vulcanized (RTV) silicone rubber (SR) matrix. Composites were prepared by mixing RTV-SR with nanofillers and then kept for vulcanization at room temperature for 24 h. The RTV-SR composites obtained were characterized with respect to their mechanical, actuation, and magnetic properties. Fourier-transform infrared spectroscopy (FTIR) analysis was performed to investigate the composite raw materials and finished composites, and X-ray photoelectron spectroscopy (XPS) analysis was used to study composite surface elemental compositions. Results showed that mechanical properties were improved by adding fillers, and actuation displacements were dependent on the type of nanofiller used and the applied voltage. Magnetic stress-relaxation also increased with filler amount and stress-relaxation rates decreased when a magnetic field was applied parallel to the deformation axes. Thus, this study showed that the inclusion of iron oxide (Fe3O4) or TiO2 fillers in RTV-SR improves mechanical, actuation, and magnetic properties.

Highly active and selective supported iron oxide nanoparticles in microwave-assisted N-alkylations of amines with alcohols

2010 ◽  
Vol 12 (7) ◽  
pp. 1281 ◽  
Author(s):  
Camino Gonzalez-Arellano ◽  
Kenta Yoshida ◽  
Rafael Luque ◽  
Pratibha L. Gai
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Microwave Assisted ◽  
Highly Active ◽  
Supported Iron

scholarly journals A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe 5 O 6

2020 ◽  
Vol 59 (14) ◽  
pp. 5632-5636
Author(s):  
Sergey V. Ovsyannikov ◽  
Maxim Bykov ◽  
Sergey A. Medvedev ◽  
Pavel G. Naumov ◽  
Anton Jesche ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Room Temperature ◽  
Type Transition
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