Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 538, P. 216725 - 216725
Published: April 21, 2025
Language: Английский
Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 538, P. 216725 - 216725
Published: April 21, 2025
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151197 - 151197
Published: April 14, 2024
Biomass–derived carbon materials doped with diverse heteroatoms have demonstrated huge potentials for environment and energy applications, thanks to the availability, preferable porous channel structures, excellent conductivity stability. In this work, fiberboard waste containing resin–based adhesive was selected green fabrication of N–doped catalysts without using extra N–sources. A facile two–step calcination strategy sequential carbonization activation proposed generation exposure indispensable active sites, realizing controllable regulation textural morphological characteristics. The resulting derived (NFC) samples possessed unique hierarchically structures a significantly enlarged surface area, plentiful activity–dependent N species (e.g., graphitic pyridinic N), as well suitable graphitization degree hydrophilicity. As result, favorable adsorption procedure an enhanced accessibility sites synergistically boosted catalytic performance towards hydrogenation reduction nitroaromatics. Taking NFC–hh sample paradigm, 4–nitrophenol (4–NP) reduction, achieving high apparent rate constant 0.40 min−1 impressive turnover frequency ∼0.20 mmol g−1 min−1. Besides, continuous–flowing test exhibited conversion efficiency > 99.50% long–term stability over 100 h, showing attractive prospect industrial application. This work presents new approach value–added utilization biomass waste, provides low–cost high–active catalyst environmental remediation.
Language: Английский
Citations
7Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161490 - 161490
Published: March 1, 2025
Language: Английский
Citations
1Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 667, P. 184 - 191
Published: April 13, 2024
Language: Английский
Citations
5ACS Omega, Journal Year: 2024, Volume and Issue: 9(49), P. 48014 - 48031
Published: Nov. 21, 2024
Water contamination by nitro compounds from various industrial processes has significantly contributed to environmental pollution and severely threatened aquatic ecosystems. Inexpensive, efficient, environmentally benign catalysts are required for the catalytic reduction of such compounds. This study reports fabrication nanocomposites (NCs) copper oxide nanoparticles (CuO NPs) supported on a kaolin sheet using straightforward simple one-pot synthesis procedures that control metal precursor ratios. The selected as-synthesized CuO/kaolin NC was characterized range advanced spectroscopic microscopic methods, as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible (UV–vis) spectroscopy, field emission scanning electron microscopy (FE-SEM), transmission (TEM), energy dispersive (EDX), high-angle annular dark-field TEM (HAADF-STEM), N2 adsorption/desorption analysis. characterization results confirmed successful incorporation CuO NPs into sheets, which had an average size about 18.7 nm. fabricated used heterogeneous catalyst efficient 4-nitrophenol (4-NP) 4-aminophenol (4-AP) in presence sodium borohydride (NaBH4) aqueous system at room temperature. demonstrated superior performance with high 4-NP conversion 4-AP (>99%) phase (50 mL, 20 mg L–1) within 6 min. In addition, reaction kinetics also investigated, followed pseudo-first-order equation apparent rate constant 1.76 min–1. Furthermore, Arrhenius Eyring parameters hydrogenation were calculated order investigate process more detail. Moreover, exhibited excellent reusability stability over seven repeated test cycles without any noticeable decline activity. Therefore, this paper could provide novel, promising clay-based non-noble nanocatalyst reduce system.
Language: Английский
Citations
4Chemistry, Journal Year: 2025, Volume and Issue: 7(1), P. 26 - 26
Published: Feb. 19, 2025
This study was aimed at elucidating the role of carboneous component in Co–carbon-containing catalysts for hydrogenation organic compounds. A Co-C/SiO2 catalyst synthesized via pyrolysis a Co(II) complex with 1,2-diaminobenzene on silica and subsequently irradiated 2.3 MeV electrons, producing Co-C/SiO2*. comprehensive characterization using XRD, TEM, IR, Raman spectroscopy indicated minimal structural changes cobalt nanoparticles materials. However, analysis revealed slight decrease defect content upon irradiation, which could occur due to healing. The catalytic tests, including 26 compounds, demonstrated an enhanced performance 17 cases. improvement attributed modification material. It be concluded that components Co-C composites contributed their performance, probably by modifying electronic structure Co nanoparticles. In turn, results provide arguments against supposition occurs defects
Language: Английский
Citations
0Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 538, P. 216725 - 216725
Published: April 21, 2025
Language: Английский
Citations
0