Results 41 to 50 of about 73,997 (288)

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

A comparison of the Si/Al and Si/time wet-alkaline digestion methods for measurement of biogenic silica in lake sediments [PDF]

, 2010
Existing techniques for measuring sediment Biogenic Silica (BSi) concentrations rely largely on conventional (Si-only) wet-alkaline digestion methods. Although results have provided detailed palaeoenvironmental information, potential errors can arise in ...
Swann, George E.A.
core   +3 more sources

Law and Mechanism of Different Electric Field Modes Enhancement Alkaline Leaching Sandstone-type Uranium Ore

Yuanzineng kexue jishu
China’s uranium resources are rich in reserves and deposits, but they are mainly low-grade uranium ores with low content of uranium. Sandstone-type uranium ores are mainly mined by in-situ leaching (ISL), but when the carbonate content is high, their ...
LI Rubin1, 2, LI Chunguang1, 2, 3, LIU Zhenzhong1, LI Yongmei1, 2, HUANG Zixian1, 2, CHEN Rukang2, ZHANG Shengdong3, LIU Longcheng2
doaj   +1 more source

An Innovative Technique for Comprehensive Utilization of High Aluminum Iron Ore via Pre-Reduced-Smelting Separation-Alkaline Leaching Process: Part I: Pre-Reduced-Smelting Separation to Recover Iron

Metals, 2019
In this study, a novel process was established for extraction of Fe and Al from a complex high aluminum iron ore (33.43% Fetotal and 19.09% Al2O3). The main steps in the proposed process included pre-reducing high alumina iron ore and subsequent smelting
Siwei Li, Jian Pan, Deqing Zhu, Zhengqi Guo, Yue Shi, Jianlei Chou, Jiwei Xu   +6 more
doaj   +1 more source

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

Advanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan, Karuppasamy Dharmaraj, Thorsten Schultz, Leiqiang Qin, Ningjun Chen, Danielle A. Douglas‐Henry, Bastian Schmiedecke, Merve Buldu‐Akturk, Axel Zuber, Iris Dorbandt, Maximilian Reinhardt, Yael Rodriguez‐Ayllon, Yan Lu, Valeria Nicolosi, Norbert Koch, Johanna Rosen, Michelle P. Browne   +16 more
wiley   +1 more source

Mineralogical examination of biomass ashes: A preliminary study for potassium enrichment and phosphoric acid (H3PO4) production

Bulletin of the Mineral Research and Exploration
In this study, biomass fly ash was investigated and determined by XRD to be predominantly langbeinite, aphthitalite, sylvine, apatite and hydroxyapatite.
Duran Serdar Karahan, Gülsüm Turgut, Arzu Yavuz, Ufuk Kibar, Mustafa Albayrak, Mehmet Çöteli   +5 more
doaj   +1 more source

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

Advanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni, Erik Troschke, Henrik Vorwerk, Shiva Shahbazi Avarvand, Andreas Stihl, Nadzeya Brezhneva, Marius Hermesdorf, Desirée Leistenschneider, Felix H. Schacher, Jacob Schneidewind, Martin Oschatz   +10 more
wiley   +1 more source

Compared to conventional, ecological intensive management promotes beneficial proteolytic soil microbial communities for agro-ecosystem functioning under climate change-induced rain regimes [PDF]

, 2020
Projected climate change and rainfall variability will affect soil microbial communities, biogeochemical cycling and agriculture. Nitrogen (N) is the most limiting nutrient in agroecosystems and its cycling and availability is highly dependent on ...
A Fließbach, A Gattinger, A Hartmann, A Kaisermann, A Lareen, AT Austin, BJ Cardinale, BK Singh, C Preece, C Wagg, CW Bell, D Baraniya, D Fowler, D Geisseler, D Kundel, DC Laughlin, DE Canfield, DL Moorhead, EL Ng, F Isbell, FT De Vries, FTde de Vries, G Loucougaray, G Piton, H Rennenberg, HJ Bach, J Lefcheck, J-S He, JBH Martiny, JJ Elser, JN Galloway, JP Schimel, K Grigulis, L Fuchslueger, L Philippot, L Philippot, L Žifčáková, M Delgado-Baquerizo, M Fuka, M Hartmann, M Lori, M Lori, M Sakurai, MGA Van Der Heijden, N Fanin, N Legay, N Legay, P Ewels, P García-Palacios, P García-Palacios, P Taberlet, PJ Van Soest, PM Homyak, PM Vitousek, R Bommarco, R Li, RC Edgar, RV Lenth, S Díaz, S Güsewell, S Jaenicke, S Lladó, S Manzoni, S Naeem, SF Bender, SF Bender, SK Hargreaves, T Magoč, TV Karpinets, U Skiba, V Vranova, VJG Houba, VO Sadras, W Borken, W Changhui, YT Cheng   +75 more
core   +4 more sources

Selective Dissolution and Mechanism of Arsenopyrite by the Oxidizing Agent in Alkaline Leaching System

Kuangchan zonghe liyong
Arsenopyrite is a common gold-bearing mineral, and the presence of arsenic leads to difficulties in gold recovery. In this paper, the effects of leaching time, NaOH concentration, temperature and potassium permanganate concentration on the arsenic ...
Kai JIN, Wenbin YUAN, Xiaolong WANG, Wenqing QIN, Yansheng ZHANG   +4 more
doaj   +1 more source

Leaching Characteristics and Potential Ecological Risks of Typical Heavy Metals in Gangue-Based Composite Materials [PDF]

E3S Web of Conferences
Coal gangue can potentially release varying amounts of heavy metals under conditions such as soaking and leaching, posing a threat to ecological and environmental safety. This has become a research hotspot in recent years.
Yang Yansheng, Qin Yu, He Ruimin, Zhang Jie, Yu Yan   +4 more
doaj   +1 more source