Results 81 to 90 of about 116,497 (303)

The influence of platinum washing-out time on its recovery from used auto catalytic converters

open access: yesMetalurgija, 2014
The used catalytic converters contain small amounts of precious metals. Recovery of these metals is essential for environmental and economic reasons. This work presents a method of Platinum Group Metals (PGM) recovery from auto catalytic converters in ...
A. Fornalczyk, M. Saternus, J. Willner
doaj  

21st Century emissions technology - a review [PDF]

open access: yes, 2001
This article reviews the 21st Century Emissions Technology conference held by Institute of Mechanical Engineers (in December 2000) and summarises the latest developments in emissions ...
Warren, James P.
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Biohydrometallurgical methods for metals recovery from waste materials

open access: yesMetalurgija, 2015
The article draws attention to recently conducted research of bacterial leaching of metals from various polymetallic waste. These wastes are the carriers of valuable metals: base metals, precious and platinum group metals (e.g.
J. Willner   +3 more
doaj  

Asteroid 1986 DA: Radar evidence for a metallic composition [PDF]

open access: yes
Radar observations of the near-Earth asteroid 1986 DA were carried out at the Arecibo Observatory in April 1986, two months after its discovery. Radar results are consistent with the hypothesis that 1986 HA is a piece of NiFe metal derived from the ...
Campbell, D. B.   +6 more
core   +1 more source

European mineral statistics 2002-06 : a product of the World Mineral Statistics database [PDF]

open access: yes, 2008
European Mineral Statistics has over 300 pages of tables on minerals production and trade. Thirty two countries are covered including all the EU members, EU applicants, Norway and Switzerland. In the first section there are tables by country, followed by
Bide, Tom   +6 more
core  

Asteroid resource map for near-Earth space [PDF]

open access: yes, 2011
Most future concepts for the exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this required mass from the Earth’s surface increases cost due to the large energy input necessary to move mass out of the ...
McInnes, Colin   +1 more
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Developments in Platinum-Group Metals as Dual Antibacterial and Anticancer Agents

open access: yesJournal of Chemistry, 2019
Platinum-group (PG) complexes have been used as antibacterial and anticancer agents since the discovery of cisplatin. The science world still requires improvement on these complexes because of multidrug and antineoplastic resistances.
Ayodele T. Odularu   +3 more
doaj   +1 more source

Comparative study of the photodeposition of Pt, Au and Pd on pre-sulphated TiO2 for the photocatalytic decomposition of phenol [PDF]

open access: yes, 2011
A comparative study of the photodeposition of Pt, Au and Pd under the same experimental conditions onto pre-sulphated and non-sulphated TiO2 was performed.
Colón Ibáñez, Gerardo   +3 more
core   +1 more source

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