Supercritical fluid chemical deposition of Pd nanoparticles on magnesium–scandium alloy for hydrogen storage

2013 ◽  
Vol 574 ◽  
pp. 6-12 ◽  
Author(s):  
Samuel Couillaud ◽  
Marina Kirikova ◽  
Warda Zaïdi ◽  
Jean-Pierre Bonnet ◽  
Samuel Marre ◽  
...  
2018 ◽  
Vol 8 (4) ◽  
pp. 1870016
Author(s):  
Sushant Kumar ◽  
Theodore Pavloudis ◽  
Vidyadhar Singh ◽  
Hoa Nguyen ◽  
Stephan Steinhauer ◽  
...  

2019 ◽  
Vol 31 (10) ◽  
pp. 2229-2232
Author(s):  
M. Alexander ◽  
R.A. Kalaivani ◽  
V. Sriraman ◽  
U. Senthilkumar

Fabricated titanate nanotubes (f-TNT) are prepared by chemical deposition method using linen fiber. The f-TNTs is fabricated by TiO2 nanoparticles, the each TiO2 nanoparticles diameter has 80-100 nm in range. The Pd0 nanoparticle was coated on the surface of the f-TNT by chemical reduction method, using NaBH4 as reducing agent. The prepared Pd/f-TNTs characterized by FT-IR, FE-SEM and HRTEM, the result shows that the f-TNT diameter is 1500 nm and Pd nanoparticles range in 20-50 nm. The Pd/f-TNT nanocomposite modified glassy carbon (GC) electrode shows quasi irreversible redox behaviours in cyclic voltammeter. Those Pd/f-TNTs modified electrode is utilized for electrochemical polymerization of o-phenylenediamine in acid medium.


2015 ◽  
Vol 4 (6) ◽  
Author(s):  
Oana Pascu ◽  
Samuel Marre ◽  
Cyril Aymonier

AbstractBy structuring matter at the nano level using highly versatile nanotechnology approaches and apparatus, multifunctionalities with manifestation of enhanced and/or novel useful properties could be attained. The challenges in nanoengineering are the ability to tune the nano-object characteristics (size, distribution, composition, and surface chemistry) and to have a good control on the possible synergy created at the interfaces, especially in the case of complex multifunctional materials. Surface nanoengineering goes hand in hand with the creation of interfaces between nano-objects – either inorganic or hybrid ones – and a closer look in this direction is essential. The present review aims at presenting the possibilities of surface nanoengineering by versatile approaches, namely supercritical fluids processes. Two main routes of nanostructuration, each containing three concepts, will be discussed: supercritical fluid chemical deposition performed in batch mode and continuous supercritical fluid synthesis. Both approaches can be used to access interesting materials with desired properties, with the choice of process depending on what the readers are pursuing.


1996 ◽  
Vol 279 (1-2) ◽  
pp. 66-69 ◽  
Author(s):  
V.K. Popov ◽  
V.N. Bagratashvili ◽  
E.N. Antonov ◽  
D.A. Lemenovski

1991 ◽  
Vol 26 (11) ◽  
pp. 1127-1133 ◽  
Author(s):  
Brooks M. Hybertson ◽  
Brian N. Hansen ◽  
Robert M. Barkley ◽  
Robert E. Sievers

2020 ◽  
Vol 10 (13) ◽  
pp. 4618
Author(s):  
Sesha Srinivasan ◽  
Dervis Emre Demirocak ◽  
Ajeet Kaushik ◽  
Meenu Sharma ◽  
Ganga Ram Chaudhary ◽  
...  

In the field of energy storage, recently investigated nanocomposites show promise in terms of high hydrogen uptake and release with enhancement in the reaction kinetics. Among several, carbonaceous nanovariants like carbon nanotubes (CNTs), fullerenes, and graphitic nanofibers reveal reversible hydrogen sorption characteristics at 77 K, due to their van der Waals interaction. The spillover mechanism combining Pd nanoparticles on the host metal-organic framework (MOF) show room temperature uptake of hydrogen. Metal or complex hydrides either in the nanocomposite form and its subset, nanocatalyst dispersed alloy phases illustrate the concept of nanoengineering and nanoconfinement of particles with tailor-made properties for reversible hydrogen storage. Another class of materials comprising polymeric nanostructures such as conducting polyaniline and their functionalized nanocomposites are versatile hydrogen storage materials because of their unique size, high specific surface-area, pore-volume, and bulk properties. The salient features of nanocomposite materials for reversible hydrogen storage are reviewed and discussed.


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