Electrocatalytic generation of H2 from neutral water in acetonitrile using manganese polypyridyl complexes with ligand assistance

2017 ◽  
Vol 46 (20) ◽  
pp. 6518-6522 ◽  
Author(s):  
Gyandshwar Kumar Rao ◽  
Mohammad Parsa Jamshidi ◽  
Jeremy I. G. Dawkins ◽  
Wendy Pell ◽  
Ilia Korobkov ◽  
...  
Keyword(s):  
Polypyridyl Complexes ◽  
The Earth ◽  
Earth Abundant ◽  
Acetonitrile Solutions ◽  
Neutral Water ◽  
Abundant Element

The earth-abundant element, manganese can be employed in electrocatalytically active complexes for H2 generation from neutral water added to acetonitrile solutions.

scholarly journals Enhanced photocatalytic hydrogen evolution by combining water soluble graphene with cobalt salts

2014 ◽  
Vol 5 ◽  
pp. 1167-1174 ◽  
Author(s):  
Jing Wang ◽  
Ke Feng ◽  
Hui-Hui Zhang ◽  
Bin Chen ◽  
Zhi-Jun Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Soluble ◽  
Eosin Y ◽  
Turnover Number ◽  
Photocatalytic Hydrogen Evolution ◽  
Water Dispersible ◽  
The Earth ◽  
Sulfonated Graphene ◽  
Earth Abundant ◽  
Abundant Element

There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H2/Co) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene.

scholarly journals Sustainable Hydrogenation of Nitroarenes to Anilines with Highly Active In-Situ Generated Copper Nanoparticles

2020 ◽  
Author(s):  
Fatma Pelin Kinik ◽  
Tu Ngugen ◽  
Mounir Mensi ◽  
Christopher Ireland ◽  
Kyriakos Stylianou ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Hydrogenation Reaction ◽  
Hydrogen Gas ◽  
Proof Of Concept ◽  
Drug Molecules ◽  
Highly Active ◽  
The Earth ◽  
Earth Abundant ◽  
Stability Issues

<div> <div> <div> <p>Metal nanoparticles (NPs) are usually stabilized by a capping agent, a surfactant, or a support material, to maintain their integrity. However, these strategies can impact their intrinsic catalytic activity. Here, we demonstrate that the in-situ formation of copper NPs (Cu0NPs) upon the reduction of the earth-abundant Jacquesdietrichite mineral with ammonia borane (NH3BH3, AB) can provide an alternative solution for stability issues. During the formation of Cu0NPs, hydrogen gas is released from AB, and utilized for the reduction of nitroarenes to their corresponding anilines, at room temperature and under ambient pressure. After the nitroarene-to-aniline conversion is completed, regeneration of the mineral occurs upon the exposure of Cu0NPs to air. Thus, the hydrogenation reaction can be performed multiple times without the loss of the Cu0NPs’ activity. As a proof-of-concept, the hydrogenation of drug molecules “flutamide” and “nimesulide” was also performed and isolated their corresponding amino-compounds in high selectivity and yield. </p> </div> </div> </div>

scholarly journals Discovery of a ternary pseudobrookite phase in the earth-abundant Ti–Zn–O system

2016 ◽  
Vol 45 (4) ◽  
pp. 1572-1581 ◽  
Author(s):  
Nicola H. Perry ◽  
Vladan Stevanovic ◽  
Linda Y. Lim ◽  
Thomas O. Mason
Keyword(s):  
Experimental Approach ◽  
Chemical System ◽  
The Earth ◽  
System P ◽  
Earth Abundant

We apply a combined theoretical and experimental approach to the search for “missing”, stable materials within the ternary Zn–Ti–O chemical system, leading to the discovery of a new pseudobrookite phase, ZnxTi3−xo5−δ.

Boosting the photocatalytic activity of graphite carbon nitride by designing novel MoS2–transition metal heterojunction cocatalysts

2019 ◽  
Vol 7 (42) ◽  
pp. 13211-13217 ◽  
Author(s):  
Kui Li ◽  
Ye-Zhan Lin ◽  
Yu Zhang ◽  
Mei-Ling Xu ◽  
Ling-Wang Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Transition Metal ◽  
Synergistic Effect ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
The Earth ◽  
Earth Abundant

MoS2–transition metal heterojunctions were adopted as cocatalysts on the earth-abundant g-C3N4 and displayed a synergistic effect on improving the photocatalytic performance.

Energy Scavenging Luminescent Piezo Fabrics: Small Silicon Dots Enable Big Electrical Outputs

2021 ◽  
Author(s):  
Zhou Peng ◽  
Jiaqi Chen ◽  
Chuanfeng Wang ◽  
Wei Li ◽  
Binbin Zhang ◽  
...  
Keyword(s):  
Materials Design ◽  
Energy Scavenging ◽  
The Earth ◽  
Earth Abundant ◽  
Silicon Based ◽  
Modern Technologies

Modern technologies are built on the earth-abundant silicon. In this regard, the emerging autonomous micro/nanosystems urgently need to be compatible with the existing silicon-based infrastructure in terms of materials design...

Processing and Thermoelectric Properties of New Si-/ Se-/ Sn-Based Intermetallics

2016 ◽  
Vol 879 ◽  
pp. 2131-2137
Author(s):  
Wilfried Wunderlich ◽  
Masashi Sato ◽  
Yoshihito Matsumura
Keyword(s):  
Thermoelectric Properties ◽  
Driving Force ◽  
Intermetallic Phase ◽  
Intermetallic Alloys ◽  
Arc Melting ◽  
The Earth ◽  
Earth Abundant ◽  
First Time ◽  
New Si ◽  
Powder In Tube

Global warming is the driving force for developing new functional thermoelectric generators based on new materials which contain at least one of the elements Si, Se, or Sn. We describe four processing methods and their characterization by SEM and thermoelectric properties. The earth-abundant Mg2Si requires the method of cyclic hydrogen loading, which has two advantages: It suppresses the oxide formation, and promotes the driving force for formation of the intermetallic phase. While the clathrate BaCuSi and the Half-Heusler alloy (TiZr)NiSn, as most intermetallic alloys, can economically be produced by arc-melting, the Se-alloys CuTiSe and CuFeSe need to be processed by the powder-in-tube method and their Seebeck-voltage measurements up to +/- 0.04 mV/K and output power of 4 μW at ΔT= 400 K are reported here for the first time.

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