Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Multi-pollutant removal (MPR) of NO and VOCs simultaneously is efficient of flue gas treatment in coal-fired power plants. But reducing the competition for active sites between NH, NO, CH, and CH remains challenging. Herein, Cr, Mn, and Fe were respectively doped to MoWTi catalyst via wet impregnation. The Fe + Mo ↔ Fe + Mo redox cycle led to an increased proportion of low valence ions (Mo and W) and facilitated the creation of active oxygen vacancies with several active sites. It also possessed plentiful mild to strong acid sites with ideal ratio. These factors enhanced catalytic activity of Fe-MoWTi. Remarkable MPR efficiencies of NO, CH, and CH were achieved under industrial SCR condition, characterized by low oxygen but high SO levels at 340 °C, with removal rates reaching 89.85%, 97.57%, and 86.30% respectively. Theory calculations further revealed that Fe-MoWTi favor NH and O adsorptions. NO elimination was found to follow both Eley-Rideal (E-R) and Langmuir-Hinshelwood (L-H) processes, supported by in situ DRIFTS analysis. The reactions involving NO/NO/nitrite/nitrate occurred with NH(ads)/ NH(ads)/NH (ads). CH and CH underwent gradual oxidation, formatting alcohols, aldehydes, acids, and maleic acids, before eventually being mineralized to gaseous CO and HO. Findings hold significant potential for application, providing guidance for the development of catalysts with improved resistance against SO poisoning and enhanced MPR capabilities.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11356-024-32339-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
CuCo-Embedded Nitrogen-Doped Carbon as a Bifunctional Catalyst for Efficient Rechargeable Zinc-Ethanol/Air Batteries.
ACS Appl Mater Interfaces
September 2025
College of Chemistry and Chemical Engineering, Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, China.
The oxygen evolution reaction (OER) in conventional zinc-air batteries (ZABs) involves a complex multielectron transfer process, leading to slow reaction kinetics, high charging voltage, and low energy efficiency. To address these limitations, a zinc-ethanol/air battery (ZEAB) system that strategically replaces the OER with the ethanol oxidation reaction (EOR) possessing a lower thermodynamic potential has been proposed. Herein, a bimetallic catalyst CuCo-embedded nitrogen-doped carbon (CuCo-20%-1), derived from a Cu/Co/Cd co-coordinated metal-organic precursor, is synthesized and exhibits an excellent performance for both EOR and ORR.
View Article and Find Full Text PDFActive Biomonitoring of PFAS in Asian Clams: Associations With Oxidative stress, Respiration and Condition index.
Environ Pollut
September 2025
ECOSPHERE, Department of Biology, University of Antwerp, Belgium.
PER: and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants that accumulate in aquatic ecosystems, posing a threat to wildlife. This study examines the potential of Asian clams (Corbicula fluminea) as an active biomonitoring species for assessing PFAS contamination in the Scheldt River, Belgium. Clams were exposed in cages at six sites along the river for a six-week exposure period, with simultaneous collection of sediment and water samples at each site.
View Article and Find Full Text PDFLignin-mediated AgCoOS bimetal oxysulfide catalysts for highly efficient catalytic reduction of organic and Cr(VI) pollutants in the dark.
Int J Biol Macromol
September 2025
College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China. Electronic address:
Lignin, a negatively charged, three-dimensional natural biopolymer, serves as an ideal support for metal catalysts due to its abundant functional groups and tunable chemical properties, which enable strong metal coordination and effective immobilization. Herein, we demonstrate a lignin-mediated Co/O co-doped AgS, symbolized as L-AgCoOS, bimetal oxysulfide catalyst via a facile hydrolysis method for the efficient reduction of toxic phenolic compounds (4-nitrophenol, 4-NP), organic dyes (methyl orange (MO), methylene blue (MB), rhodamine B (RhB), and heavy metal ions Cr(VI)) under dark conditions. Lignin, used to immobilize catalysts, also contributes to increasing the number of active catalytic sites and enhancing catalytic activity.
View Article and Find Full Text PDFConfinement of highly dispersed bimetallic Nico nanoparticles in 3D hierarchically mesoporous zeolite with enhanced performance in biomass-derived vanillin hydrodeoxygenation.
J Colloid Interface Sci
September 2025
Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Encapsulation of non-noble bimetallic nanoparticles within a zeolite framework can improve the stability and accessibility of active sites, but the single microporous structure and poor metal stability decreased the catalytic performance of the catalyst. Here, 3D hierarchical ZSM-5 zeolite encapsulated NiCo nanoparticles (NiCo@3DHZ5) were synthesized by Bottom-up confined steam-assisted crystallization (SAC) one-pot hydrothermal method and applied to the hydrodeoxygenation of vanillin. A series of characterizations showed that highly stable alloyed NiCo nanoparticles were encapsulated in a framework of 3DHZ5, the strong metal-zeolite interactions resulted in highly dispersed NiCo nano-alloys facilitated hydrogen adsorption and spillover of active hydrogen atoms, and the 3D hierarchical structure promoted oxygenated substrate diffusion, the synergy interaction between the alloy particles confined in the 3DHZ5 pores and the acidic sites on the zeolite surface promoted the selective conversion of vanillin.
View Article and Find Full Text PDFTransient mixed-valent Ni active sites boost urea electrooxidation.
J Colloid Interface Sci
September 2025
Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China. Electronic address:
The utilization of synergistic multivalent active sites holds potential in addressing the inherent sluggish kinetics of electrocatalytic reactions. Herein, we prepared au uNPs/Ni-NDC (NDC = 1,4-Naphthalenedicarboxylic acid) and leveraged the localized surface plasmon resonance (LSPR) effect to drive hot electron transfer from au nanoparticles to the Ni substrate, thereby generating multivalent active sites to boost the urea oxidation reaction (UOR). Under exciting light, au uNPs/Ni-NDC exhibited a twofold increase in UOR current accompanied by a significant negative shift in onset potential.
View Article and Find Full Text PDF