Results 1 to 10 of about 133,850 (147)

Recovery of critical metals using biometallurgy. [PDF]

Curr Opin Biotechnol, 2015
The increased development of green low-carbon energy technologies that require platinum group metals (PGMs) and rare earth elements (REEs), together with the geopolitical challenges to sourcing these metals, has spawned major governmental and industrial efforts to rectify current supply insecurities. As a result of the increasing critical importance of
Zhuang WQ, Fitts JP, Ajo-Franklin CM, Maes S, Alvarez-Cohen L, Hennebel T.   +5 more
europepmc   +6 more sources

Utilization of amino acid for selective leaching of critical metals from spent hydrodesulfurization catalyst [PDF]

Frontiers in Chemistry, 2022
While spent catalysts can cause serious environmental pollution, they can be considered an essential secondary metal source due to their high critical metal grades.
Idol Phann, Yu Tanaka, Sae Yamamoto, Naoko Okibe   +3 more
doaj   +2 more sources

Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange

Molecules, 2023
Chitosan (CS) is a natural and low-cost adsorbent for capturing metal ions and organic compounds. However, the high solubility of CS in acidic solution would make it difficult to recycle the adsorbent from the liquid phase.
Daoguang Teng, Peng Jin, Wenhuan Guo, Jiang Liu, Wei Wang, Peng Li, Yijun Cao, Ling Zhang, Ying Zhang   +8 more
doaj   +1 more source

Heterostructured α-Bi₂O₃/BiOCl Nanosheet for Photocatalytic Applications

Nanomaterials, 2022
Photocatalytic degradation of organic pollutants in wastewater is recognized as a promising technology. However, photocatalyst Bi2O3 responds to visible light and suffers from low quantum yield.
Daoguang Teng, Jie Qu, Peng Li, Peng Jin, Jie Zhang, Ying Zhang, Yijun Cao   +6 more
doaj   +1 more source

Metamagnetic Quantum Criticality in Metals [PDF]

Physical Review Letters, 2002
We present a renormalization group treatment of metamagnetic quantum criticality in metals. We show that for clean systems the universality class is that of the overdamped, conserving (dynamical exponent z = 3) Ising type. We obtain detailed results for the field and temperature dependence of physical quantities including the differential ...
A J, Millis, A J, Schofield, G G, Lonzarich, S A, Grigera   +3 more
openaire   +2 more sources

Quantum criticality in twisted transition metal dichalcogenides [PDF]

Nature, 2021
Abstract In moiré heterostructures, gate-tunable insulating phases driven by electronic correlations have been recently discovered. Here, we use transport measurements to characterize the gate-driven metal-insulator transitions and the metallic phase in twisted WSe2 near half filling of the first moiré subband.
Augusto Ghiotto, En-Min Shih, Giancarlo S. S. G. Pereira, Daniel A. Rhodes, Bumho Kim, Jiawei Zang, Andrew J. Millis, Kenji Watanabe, Takashi Taniguchi, James C. Hone, Lei Wang, Cory R. Dean, Abhay N. Pasupathy   +12 more
openaire   +4 more sources

Criticality of metals and metalloids [PDF]

Proceedings of the National Academy of Sciences, 2015
Significance In the past decade, sporadic shortages of metals and metalloids crucial to modern technology have inspired attempts to determine the relative “criticality” of various materials as a guide to materials scientists and product designers. The variety of methodologies that have been used for this purpose have (predictably) resulted in
Graedel, T E, Harper, E M, Nassar, N T, Nuss, Philip, Reck, Barbara K   +4 more
openaire   +3 more sources

Material efficiency: rare and critical metals [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2013
In the last few decades, progress in electronics, especially, has resulted in important new uses for a number of geologically rare metals, some of which were mere curiosities in the past. Most of them are not mined for their own sake (gold, the platinum group metals and the rare Earth elements are exceptions) but are found mainly in the ores of the ...
Ayres, R. U., Peiro, L. T.
openaire   +2 more sources

Multiband Quantum Criticality of Polar Metals [PDF]

Physical Review Letters, 2020
Motivated by recent experimental realizations of polar metals with broken inversion symmetry, we explore the emergence of strong correlations driven by criticality when the polar transition temperature is tuned to zero. Overcoming previously discussed challenges, we demonstrate a robust mechanism for coupling between the critical mode and electrons in ...
Pavel A. Volkov, Premala Chandra
openaire   +3 more sources

Decoupling of scandium and rare earth elements in organic (nano)particle-rich boreal rivers draining the Fennoscandian Shield

Scientific Reports, 2023
Only few datasets on scandium (Sc) and rare earths and yttrium (REY) in rivers are available and the behaviour of Sc in the hydrosphere is poorly understood.
Franziska Klimpel, Michael Bau
doaj   +1 more source