With the rapid development of adsorbents for removal of elemental mercury (Hg) from coal combustion flue gas, the preparation of adsorbents with superior performance, lower cost and environmental friendliness remains an important challenge. An incipient wetness impregnation method followed by in-situ selenization was used to load copper selenide (CuSe) onto the surface of optimal magnetic biochar (OMBC). The results showed that CuSe significantly enhanced the Hg removal performance of the OMBC, and CuSe loading ratio of 10 % (10CuSe/OMBC) had the best Hg removal performance. 10CuSe/OMBC maintained its Hg removal efficiency above 95 % for 150 min at 30-150 °C, and it had a good resistance to SO. The equilibrium adsorption capacity of 10CuSe/OMBC could reach up to 8.73 mg/g, which was close to the theoretical value 12.99 mg/g, and the adsorption rate was up to 20.33 µg/(g·min) Meanwhile, 10CuSe/OMBC had strong magnetism that is not permanently magnetized, which could be separated from desulfurization gypsum and recycled many times. Characterization results demonstrated that Se, Cu and O played essential roles in the oxidation of Hg, and Se and Se can immobilize Hg to HgSe. 10CuSe/OMBC has important guiding significance for practical application because of its low cost, high performance and low mercury leaching characteristic to form HgSe.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jes.2024.07.018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Copper selenide enhanced magnetic biochar for elemental mercury removal from coal combustion flue gas.
J Environ Sci (China)
August 2025
School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China. Electronic address:
With the rapid development of adsorbents for removal of elemental mercury (Hg) from coal combustion flue gas, the preparation of adsorbents with superior performance, lower cost and environmental friendliness remains an important challenge. An incipient wetness impregnation method followed by in-situ selenization was used to load copper selenide (CuSe) onto the surface of optimal magnetic biochar (OMBC). The results showed that CuSe significantly enhanced the Hg removal performance of the OMBC, and CuSe loading ratio of 10 % (10CuSe/OMBC) had the best Hg removal performance.
View Article and Find Full Text PDFSuperstoichiometric reversible and manipulable copper-ion intercalation in niobium selenide.
Nat Commun
March 2025
Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
Few-layer stacked niobium selenide (NbSe) has evoked great interest owing to its intrinsically exotic properties and accessible manipulation by controlled ion intercalation for superconductivity physics and advanced device applications. However, attempts to extend the range of reversible intercalation stoichiometries are often hindered by overexpanded bond rupture and intrinsic-limit transition metal redox centres in selenides when proceeding towards deep intercalation. Here, we report that reversible unconventional superstoichiometric controlled intercalation in NbSe with up to two copper-ions per unit cell can be realized by triggering anionic redox, a fivefold improvement over previous report.
View Article and Find Full Text PDFApproaching 24% Efficiency in Four-Terminal Perovskite/CZTSSe Tandem Solar Cells Using Diphenylammonium Chloride Additive-Based Wide-Bandgap Perovskite Absorber.
Small
February 2025
Optoelectronic Convergence Research Center, School of Chemical Engineering, Chonnam National University, Gwangju, 61186, South Korea.
In the quest for high-efficiency photovoltaics, tandem solar cells combining perovskite and CZTSSe (copper zinc tin sulfide selenide) hold significant promise. This study explores the integration of diphenylammonium chloride (DPACl) as an additive within a wide-bandgap (WBG) perovskite layer to enhance the performance of a four-terminal (4-T) hybrid tandem solar cells (HTSCs) device. The DPACl additive has been systematically optimized and utilized for WBG perovskite solar cells (PSCs).
View Article and Find Full Text PDFTailoring the Structural Evolution of Multi-Electron Redox Conversions via Strong Selenium-Carbon Interaction for Robust Aqueous Copper-Ion Batteries.
Adv Sci (Weinh)
February 2025
Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
Aqueous metal-selenium batteries based on chalcogenide cathodes, despite their multi-electron conversion-type redox reactions and rapid kinetics, suffer from short lifespans and unclear capacity degradation mechanisms. The interfacial interactions between doped carbon and chalcogenides correlate closely with the electrochemical structural evolution. Hence, flower-like CuSe wrapped with ultrathin N-doped carbon layer (CuSe@N-C) is synthesized via a simple γ radiation-pyrolysis route for the first time.
View Article and Find Full Text PDFMicrowave-assisted Pd-catalyzed cross-coupling of aryl alkyl selenides with arylboronic acids.
Org Biomol Chem
February 2025
Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
A palladium-catalyzed cross-coupling methodology has been developed by utilizing aryl alkyl selenides and organoboranes. In this deseleniative process, the organoselenium moiety acts as a pseudohalide, facilitating the cleavage of the C-Se bond through the synergistic action of palladium(0) and stoichiometric copper(I) thiophene-2-carboxylate. When conducted under microwave irradiation, the reaction methodology demonstrates broad substrate compatibility, scalability to gram-scale synthesis, and moderate to good yields.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!