Results 111 to 120 of about 14,028 (253)

The persistence of precious metals and oil during the COVID-19 pandemic: evidence from a fractional integration and cointegration approach. [PDF]

Environ Sci Pollut Res Int, 2022
Usman N, Akadiri SS.
europepmc   +1 more source

Mn‐Induced Support Stabilization and Ir Electronic Activation Enable Acid‐Stable, Low‐Loading IrO2 Water Oxidation

Advanced Science, EarlyView.
This study introduces a dual‐regulation strategy utilizing a Mn‐doped Co3O4 support to enhance the activity and stability of low‐loading IrO2 catalysts for acidic water oxidation. Mn induces strong Mn─O covalency to reinforce the spinel lattice and activates Ir sites via interfacial electron transfer.
Zhe Liu, Guoxin Ma, Shixiang Yu, Rui Jin, Fei Wang, Xinxin Wen, Mengxin Chen, Yani Ding, Jia Liu, Xinkai Guo, Diab Khalafallah, Hassan Fouad, Xiao Ren, Siwei Li   +13 more
wiley   +1 more source

Cu-Ni Captures Platinum Group Metals from Spent Automotive Exhaust Catalysts

Separations
Platinum group metals (PGMs) are strategic metals, and recycling PGMs in spent automobile exhaust catalysts (SACs) is a key path to alleviate the contradiction between resource supply and demand.
Jiahao Li, Jibiao Han, Han Yang, Guozhen Wang, Kuo Liu, Lang Liu, Yong Li, Qingfeng Xiong, Junmei Guo, Bin Yang, Haigang Dong   +10 more
doaj   +1 more source

Precious metals recovery from aqueous solutions using a new adsorbent material. [PDF]

Sci Rep, 2021
Grad O, Ciopec M, Negrea A, Duțeanu N, Vlase G, Negrea P, Dumitrescu C, Vlase T, Vodă R.   +8 more
europepmc   +1 more source

V2CTx MXene as a Sacrificial Promoter for NiFe Catalyst for Anion Exchange Membrane Electrolyzers

Advanced Science, EarlyView.
These findings demonstrate that V2CTx functions beyond passive conductive support as an active electronic participant whose structural legacy sustains durable performance even after vanadium leaching in Anion Exchange Membrane (AEM) Electrolysers. ABSTRACT Nickel‐iron layered double hydroxides (NiFe‐LDH) show excellent activity, their poor conductivity
Bastian Schmiedecke, Can Kaplan, Karuppasamy Dharmaraj, Axel Zuber, Merve Buldu‐Aktürk, Ningjun Chen, Mailis Lounasvuori, Xuyun Guo, Valeria Nicolosi, Thorsten Schultz, Norbert Koch, Johanna Rosen, Michelle P. Browne   +12 more
wiley   +1 more source

Synthesis of a Highly Selective Scavenger of Precious Metals from a Printed Circuit Board Based on Cellulose Filter Paper Functionalized with a Grafted Polymer Chain Bearing N-Methyl-2-hydroxyethylcarbamothioate Moieties. [PDF]

ACS Omega, 2022
Hyder MKMZ, Ochiai B.
europepmc   +1 more source

CO2‐Assisted Hydrolysis of NaBH4: A Multi‐Function Platform for Enhanced Hydrogen Release, Regeneration of NaBH4, and CO2‐to‐CH4 Conversion

Advanced Science, EarlyView.
CO2 significantly accelerates hydrogen release from aqueous NaBH4 without metal catalysts, eliminating the need for downstream separation. Ball‐milling the hydrolytic products with Mg regenerates NaBH4 with yields exceeding 76% while simultaneously producing methane.
Rui Han, Stella Zhang, Yan Dai, Michael Scott, Brandon He, Sadegh Shabani, Oliver Hutt, Matthew David, Zhenguo Huang   +8 more
wiley   +1 more source

First-principles study of stability and electronic structural properties of Ag/Au/M (Cu, Ni) interface

Materials Research Express
This study investigated the interface energy, work of adhesion, and electronic structural properties at the Ag/Au/M(Cu,Ni) interface, employing the first-principles method based on density functional theory.
Jie-Qiong Hu, Chao Ma, Ming Xie, Ji-Heng Fang, Yong-Tai Chen, You-Cai Yang, Qiao Zhang, Ya-Nan Bi   +7 more
doaj   +1 more source

Making precious metals cheap: A sonoelectrochemical - Hydrodynamic cavitation method to recycle platinum group metals from spent automotive catalysts. [PDF]

Ultrason Sonochem, 2021
Vasile E, Ciocanea A, Ionescu V, Lepadatu I, Diac C, Stamatin SN.   +5 more
europepmc   +1 more source

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

Advanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu, Wei Jiang, Qingzhong Mao, Xiang Chen, Yonghao Zhao   +4 more
wiley   +1 more source