Micelle-templated synthesis of Pt hollow nanospheres for catalytic hydrogen evolution

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11370-11377 ◽  
Author(s):  
Manickam Sasidharan ◽  
Piyali Bhanja ◽  
Chenrayan Senthil ◽  
Asim Bhaumik
Keyword(s):  
Hydrogen Evolution ◽  
Wall Thickness ◽  
Ammonia Borane ◽  
Hollow Nanospheres ◽  
Void Space ◽  
Templated Synthesis ◽  
Simple Strategy ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution ◽  
Pt Hollow Nanospheres

We report an efficient, mild and simple strategy for the fabrication of colloidal hollow platinum nanospheres with the ability to tune wall-thickness and void-space over several nanometers, for application in hydrogen evolution from ammonia–borane.

Fabrication of porous nickel–silica composite particles through catalytic hydrogen evolution reaction from aqueous ammonia borane solution

2018 ◽  
Vol 11 (04) ◽  
pp. 1850078
Author(s):  
Tetsuo Umegaki ◽  
Mamoru Takahashi ◽  
Yoshiyuki Kojima
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Sodium Borohydride ◽  
Nickel Content ◽  
Ammonia Borane ◽  
Porous Nickel ◽  
High Hydrogen ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution ◽  
Nickel Species

In this work, we investigated fabrication of porous nickel–silica composite particles through catalytic hydrogen evolution reaction from aqueous solution including sodium borohydride and ammonia borane. Aggregated nickel species were observed in the samples with high nickel content from scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) results, indicating that dispersion of active nickel species was significantly influenced by nickel content. The dispersion influenced hydrogen evolution amount and rate from aqueous solution including sodium borohydride and ammonia borane, and the samples with highly dispersed active nickel species showed high hydrogen evolution amount. The particles after the hydrogen evolution process showed significantly high specific surface area with large number of nanopores. UV-Vis spectra of the samples after the hydrogen evolution process indicated that the particles with high hydrogen evolution amount from aqueous solution including sodium borohydride and ammonia borane included high amount of reduced nickel species.

Chalcogen-vacancy group VI transition metal dichalcogenide nanosheets for electrochemical and photoelectrochemical hydrogen evolution

2021 ◽  
Vol 9 (1) ◽  
pp. 101-109
Author(s):  
In Hye Kwak ◽  
Ik Seon Kwon ◽  
Jong Hyun Lee ◽  
Young Rok Lim ◽  
Jeunghee Park
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photoelectrochemical Cells ◽  
Transition Metal Dichalcogenide ◽  
Group Vi ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution

Chalcogen vacancies of MoS2, MoSe2, WS2, and WSe2 nanosheets enhanced the catalytic hydrogen evolution reaction in solar photoelectrochemical cells.

Synthesis of two new copper-sandwiched polyoxotungstates and the influence of nuclear number on catalytic hydrogen evolution activity

2020 ◽  
Vol 44 (26) ◽  
pp. 11035-11041
Author(s):  
Zhao-Min Su ◽  
Mo Zhang ◽  
Qingqing An ◽  
Dan Qin ◽  
Hai-Lou Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Catalytic Hydrogen ◽  
Nuclear Number ◽  
Catalytic Hydrogen Evolution ◽  
Two Hybrid

Two hybrid inorganic–organic CuII-sandwiched POM were synthesized and they exhibit photocatalytic activity. This would guide us to prepared copper-substituted polyoxotungstate and apply them toward renew energy.

Intercalation of cobaltocene into WS2 nanosheets for enhanced catalytic hydrogen evolution reaction

2019 ◽  
Vol 7 (14) ◽  
pp. 8101-8106 ◽  
Author(s):  
In Hye Kwak ◽  
Hafiz Ghulam Abbas ◽  
Ik Seon Kwon ◽  
Yun Chang Park ◽  
Jaemin Seo ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Spin Polarized ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution ◽  
Ws2 Nanosheets

Cobaltocene-intercalated WS2 nanosheets exhibit excellent catalytic activity toward the hydrogen evolution reaction, which is supported by spin-polarized density functional theory calculations.

Sign in / Sign up

Export Citation Format

Share Document