scholarly journals Electrospinning of Metal Doped Alumina Nanofibers for Catalyst Applications

10.5772/24966 ◽  
2011 ◽  
Author(s):  
Sneha Swaminathan ◽  
George Chase
Keyword(s):  
Alumina Nanofibers ◽  
Metal Doped

Characterization of Metal-Doped Methylated Microporous Silica for Molecular Separations

2016 ◽  
Vol 2 (2) ◽  
pp. 85-100
Author(s):  
Tània Gumí ◽  
Hany El-Feky ◽  
Kelly Briceño ◽  
Kamila Szałata ◽  
Miguel Hevia
Keyword(s):  
Microporous Silica ◽  
Molecular Separations ◽  
Metal Doped

Processing of Iridium Doped Materials and Experimental Investigation of Their Hydrogen Adsorption Capacity

2018 ◽  
Vol 69 (6) ◽  
pp. 1468-1472
Author(s):  
Radu Mirea ◽  
Mihai Iordoc ◽  
Gabriela Oprina ◽  
Gimi Rimbu
Keyword(s):  
Adsorption Capacity ◽  
Hydrogen Adsorption ◽  
Weight Ratio ◽  
H2 Adsorption ◽  
Cyclic Voltametry ◽  
Physical Chemical ◽  
Good Consistency ◽  
Metal Doped ◽  
And Storage ◽  
Poly Aniline

The paper aims to present the investigation of H2 adsorption capacity in metal doped nanostructured materials, by using two methods. Carbonic materials are considered to be one of the most promising materials to be used for hydrogen adsorption and storage. They have different applications and one of the most important is considered to be fuel cells technology. By using metals for doping these materials, the adsorption capacity increases, thus approaching the target of 6.5% weight ratio of H2 adsorbed in a substrate. Within these investigations multi-wall nanotubes and poly-aniline have been used as substrates. The poly-aniline has been prepared and doped in laboratory while the nanotubes used in experiments have been purchased from the market and afterwards doped in laboratory. The doping procedure consists of a physical-chemical method which involves salts of the metal for doping and the use of ultrasounds in order to activate the substrate for doping. The adsorption capacity of the carbonic materials has been determined by using spill over phenomena in a PCT Pro-User apparatus, provided by SETARAM and also by cyclic voltametry, by using VoltaLab-40 apparatus. In order to investigate the adsorption capacity of the nanostructured carbonic materials, the experiments have been carried out at different pressures. Both substrates have been characterized in order to determine their porosity, BET surface and structure. The collected data have been processed by using the PCT Pro-User apparatus�s software. The results have been compared with the available data from literature and a good consistency was found.

Metal Doped-C3N4/Fe2O4: Efficient and Versatile Heterogenous Catalysts for Organic Transformations

2019 ◽  
Vol 23 (12) ◽  
pp. 1284-1306
Author(s):  
Vijai K. Rai ◽  
Fooleswar Verma ◽  
Suhasini Mahata ◽  
Smita R. Bhardiya ◽  
Manorama Singh ◽  
...  
Keyword(s):  
Ring Opening ◽  
Carbon Nitride ◽  
Addition Reaction ◽  
High Surface ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Organic Transformations ◽  
Reduction Reactions ◽  
Activation Reaction ◽  
Metal Doped

The polymeric graphitic carbon nitride (g-C3N4) has been one of the interesting earth abundant elements. Though g-C3N4 finds application as a photocatalyst, its photocatalytic behaviour is limited because of low efficiency, mainly due to rapid charge recombination. To overcome this problem, several strategies have been developed including doping of metal/non-metal in the cavity of g-C3N4. Moreover, the CoFe2O4 NPs have been used in many organic transformations because of its high surface area and easy separation due to its magnetic nature. This review describes the role of cobalt ferrite as magnetic nanoparticles and metal-doped carbon nitride as efficient heterogeneous catalysts for new carbon-carbon and carbon-hetero atom bond formation followed by heterocyclization. Reactions which involved new catalysts for selective activation of readily available substrates has been reported herein. Since nanoparticles enhance the reactivity of catalyst due to higher catalytic area, they have been employed in various reactions such as addition reaction, C-H activation reaction, coupling reaction, cyclo-addition reaction, multi-component reaction, ring-opening reaction, oxidation reaction and reduction reactions etc. The driving force for choosing this topic is based-on huge number of good publications including different types of spinels/metal doped-/graphitic carbon nitride reported in the literature and due to interest of synthetic community in recent years. This review certainly will represent the present status in organic transformation and for exploring further their catalytic efficiency to new organic transformations involving C-H activation reaction through coupling, cyclo-addition, multi-component, ring-opening, oxidation and reduction reactions.

Superatomic properties of transition-metal-doped tetrahexahedral lithium clusters: TM@Li14

2019 ◽  
Vol 118 (2) ◽  
pp. e1592256 ◽  
Author(s):  
Lijuan Yan ◽  
Jun Liu ◽  
Jianmei Shao
Keyword(s):  
Transition Metal ◽  
Metal Doped ◽  
Lithium Clusters

Correlative experimental and theoretical characterization of transition metal doped hydroxyapatite nanoparticles fabricated by hydrothermal method

2021 ◽  
Vol 173 ◽  
pp. 110911
Author(s):  
Anastasia V. Sadetskaya ◽  
Natalia P. Bobrysheva ◽  
Mikhail G. Osmolowsky ◽  
Olga M. Osmolovskaya ◽  
Mikhail A. Voznesenskiy
Keyword(s):  
Transition Metal ◽  
Hydrothermal Method ◽  
Hydroxyapatite Nanoparticles ◽  
Theoretical Characterization ◽  
Metal Doped

scholarly journals Argon tagging of doubly transition metal doped aluminum clusters: The importance of electronic shielding

2021 ◽  
Vol 154 (5) ◽  
pp. 054312
Author(s):  
Jan Vanbuel ◽  
Piero Ferrari ◽  
Meiye Jia ◽  
André Fielicke ◽  
Ewald Janssens
Keyword(s):  
Transition Metal ◽  
Aluminum Clusters ◽  
Metal Doped

Biomimetic multifunctional E-skins integrated with mechanoluminescence and chemical sensing abilities

2021 ◽  
Author(s):  
Xin Yang ◽  
Xu Zhang ◽  
Qingbao Guan ◽  
Xinxing Zhang
Keyword(s):  
Chemical Sensing ◽  
Strain Sensing ◽  
Metal Doped

We present a facile method to prepare multifunctional sensors with visual strain sensing and ammonia monitoring abilities based on PANI@CNCs and metal-doped ZnS microparticle-embedded PDMS composites.

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