scholarly journals Pt nanoparticle on La0.02Na0.98TaO3 catalyst for hydrogen evolution from glycerol aqueous solution

2017 ◽  
Author(s):  
Husni Husin ◽  
Adisalamun ◽  
Yuliana Sy ◽  
Teku Muhammad Asnawi ◽  
Fikri Hasfita
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Pt Nanoparticle

One-step synthesis of CdS/CdSe/CuS hollow nanospheres in aqueous solution for enhanced photocatalytic hydrogen evolution

2020 ◽  
Vol 4 (7) ◽  
pp. 3467-3476 ◽  
Author(s):  
Guotai Sun ◽  
Jian-Wen Shi ◽  
Yajun Zou ◽  
Siman Mao ◽  
Dandan Ma ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Hollow Nanospheres ◽  
Photocatalytic Hydrogen Evolution ◽  
One Step ◽  
First Time

In this work, a new kind of CdS/CdSe/CuS hollow nanospheres (HNPs) is successfully synthesized by one-step synthesis via vulcanization and selenization in aqueous solution, without using any additional templates, for the first time.

scholarly journals Carbon Nitride-Perovskite Composites: Evaluation and Optimization of Photocatalytic Hydrogen Evolution in Saccharides Aqueous Solution

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1259
Author(s):  
Andrea Speltini ◽  
Lidia Romani ◽  
Daniele Dondi ◽  
Lorenzo Malavasi ◽  
Antonella Profumo
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
The Novel ◽  
Starch Solution ◽  
Raw Starch ◽  
Co Catalyst ◽  
Simulated Solar Light ◽  
Neat Water ◽  
Optimized Conditions

The application of hybrid photocatalysts made of carbon nitride and lead-free perovskites, namely DMASnBr3/g-C3N4 and PEA2SnBr4/g-C3N4, for the H2 evolution from saccharides aqueous solution is described. The novel composites were tested and compared in terms of hydrogen evolution rate (HER) under simulated solar light, using Pt as a reference co-catalyst, and glucose as a representative sacrificial biomass. The conditions were optimized to maximize H2 generation by a design of experiments involving catalyst amount, glucose concentration and Pt loading. For both materials, such parameters affected significantly H2 photogeneration, with the best performance observed using 0.5 g L−1 catalyst, 0.2 M glucose and 0.5 wt% Pt. Under optimized conditions, DMASnBr3/g-C3N4 showed a 5-fold higher HER compared to PEA2SnBr4/g-C3N4, i.e., 925 µmoles g−1 h−1 and 190 µmoles g−1 h−1, respectively (RSD ≤ 11%, n = 4). The former composite, which affords an HER 15-fold higher in aqueous glucose than in neat water, provided H2 also with no metal co-catalyst (around 140 µmoles g−1 h−1), and it was reusable for at least three photoreactions. Encouraging results were also collected by explorative tests on raw starch solution (around 150 µmoles g−1 h−1).

Photoreduction of Iron(III) to Iron(0) Nanoparticles for Simultaneous Hydrogen Evolution in Aqueous Solution

ChemSusChem ◽  
2014 ◽  
Vol 7 (7) ◽  
pp. 1924-1933 ◽  
Author(s):  
Chuan-Jun Wang ◽  
Shuang Cao ◽  
Biao Qin ◽  
Chen Zhang ◽  
Ting-Ting Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution

scholarly journals Silicon Nanowires with MoSxand Pt as Electrocatalysts for Hydrogen Evolution Reaction

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
S. H. Hsieh ◽  
S. T. Ho ◽  
W. J. Chen
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Silicon Nanowires ◽  
Electrochemical Impedance ◽  
Silicon Nanowire ◽  
Electrochemical Characterizations ◽  
Pt Nanoparticle ◽  
Transmission Electron ◽  
Acidic Electrolyte ◽  
Nanocomposite Catalysts

A convenient method was used for synthesizing Pt-nanoparticle/MoSx/silicon nanowires nanocomposites. Obtained Pt-MoSx/silicon nanowires electrocatalysts were characterized by transmission electron microscopy (TEM). The hydrogen evolution reaction efficiency of the Pt-MoSx/silicon nanowire nanocomposite catalysts was assessed by examining polarization and electrolysis measurements under solar light irradiations. The electrochemical characterizations demonstrate that Pt-MoSx/silicon nanowire electrodes exhibited an excellent catalytic activity for hydrogen evolution reaction in an acidic electrolyte. The hydrogen production capability of Pt-MoSx/silicon nanowires is also comparable toMoSx/silicon nanowires and Pt/silicon nanowires. Electrochemical impedance spectroscopy experiments suggest that the enhanced performance of Pt-MoSx/silicon nanowires can be attributed to the fast electron transfer between Pt-MoSx/silicon nanowire electrodes and electrolyte interfaces.

A molecular material based on electropolymerized cobalt macrocycles for electrocatalytic hydrogen evolution

2015 ◽  
Vol 17 (20) ◽  
pp. 13374-13379 ◽  
Author(s):  
Stéphane Rioual ◽  
Benoit Lescop ◽  
François Quentel ◽  
Frederic Gloaguen
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Acidic Aqueous Solution ◽  
Molecular Material

Electropolymerization of CoTAA gives an electrocatalytic material for the H2 evolution reaction in acidic aqueous solution.

Superb Hydrogen Evolution by a Pt Nanoparticle-Decorated Ni3S2 Microrod Array

2020 ◽  
Vol 12 (35) ◽  
pp. 39163-39169 ◽  
Author(s):  
Zhicai Xing ◽  
Dewen Wang ◽  
Tian Meng ◽  
Xiurong Yang
Keyword(s):  
Hydrogen Evolution ◽  
Pt Nanoparticle

Cobalt corroles with phosphonic acid pendants as catalysts for oxygen and hydrogen evolution from neutral aqueous solution

2017 ◽  
Vol 53 (46) ◽  
pp. 6195-6198 ◽  
Author(s):  
Huiling Sun ◽  
Yongzhen Han ◽  
Haitao Lei ◽  
Mingxing Chen ◽  
Rui Cao
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Evolution ◽  
Coordination Sphere ◽  
Phosphonic Acid ◽  
Acid Base ◽  
Secondary Coordination Sphere ◽  
Neutral Aqueous Solution

The acid/base pendants at the secondary coordination sphere of cobalt corroles play significant roles in OER and HER.

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