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Herein, gold nanoparticle-decorated amorphous carbon (Au/AC) was prepared by reducing chloroauric acid and layering it on amorphous carbon. The characteristics of Au/AC were examined using FT-IR, XRD, TGA, SEM, EDS, and XPS. To assess its catalytic activity, Au/AC was tested in a reaction involving anthranilamide and benzyl alcohol at 110 °C for 24 hours. This reaction yielded various 2-phenylquinazolin-4(3)-one derivatives in moderate to good yields (44-80%). Furthermore, control experiments were conducted to demonstrate the oxidation and cyclization functions of Au/AC. Noteworthy aspects of this approach included the ease of isolating Au/AC ( recrystallization) and the ability to recycle it.
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http://dx.doi.org/10.1039/d4dt02355b | DOI Listing |
ACS Omega
September 2025
Federal University of TechnologyParanáUTFPR, Graduate Program in Chemical and Biotechnological Processes (PPGQB), Rua Cristo Rei, 19, Vila Becker, Toledo 85902-490, Paraná, Brazil.
Mesoporous carbon materials were synthesized by using sucrose as a carbon source and hydrophilic Aerosil 380 as a hard template. A two-stage optimization process based on the response surface methodology using a central composite design (RSM-CCD) was employed to enhance the adsorption performance of the material for the crystal violet (CV) dye. The first stage of optimization yielded a maximum adsorption capacity of 155.
View Article and Find Full Text PDFAtomic layer deposition (ALD) enables an excellent surface coverage and uniformity in the preparation of large-area metal-oxide thin films. In particular, ALD-processed SnO has demonstrated great potential as an electron transport layer in flexible perovskite solar cells (PSCs) and tandem modules. However, the poor electrical conductivities and surface wettabilities of amorphous SnO remain critical challenges for commercialization.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
College of Polymer Science and Engineering, State Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu, 610065, China.
Pt-based catalysts exhibit extraordinary potential in reverse-water gas shift (RWGS) reactions, but often fail to possess a high reaction rate and high durability at the same time under high temperature. Herein, we designed a SiO-induced loose CeO as an effective capture for Pt atoms. The abundant surface O vacancies in the loose CeO can trigger significant electron transfer from Pt to CeO and play a crucial role in stabilizing Pt atoms, therefore, largely improving its thermal stability.
View Article and Find Full Text PDFChem Sci
September 2025
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
Amorphous materials with thickness thinned down to the single-layer limit have attracted increasing interest due to their well-defined disorder and emerging unique properties, such as disorder-dominated electronic states, high-density unsaturated coordination, enhanced quantum confinement, These features could enable innovative applications in electronics, photoelectronics, catalysis, and beyond. In this perspective, we provide an overview of recent advances in two-dimensional (2D) amorphous materials approaching the single-layer limit. We first introduce newly-developed key structural descriptors for these systems, including local bonding, topological disorder, and chemical composition.
View Article and Find Full Text PDFJ Chem Phys
September 2025
MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangdong Provincial Key Laboratory of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, School of Optoelectronic Science and Engineering, South China Normal Un
Propargyl radical (•C3H3) and butadienyl radical (•i-C4H5) are two crucial intermediates in combustion and astrochemistry, particularly in the formation of C7H8 aromatics such as toluene. However, the precise formation mechanisms of the first-ring aromatics through C3 + C4 reactions have remained ambiguous. This study explores the detailed potential energy surface (PES) of C7H8 at the •C3H3 + •i-C4H5 entrance reaction channel, alongside conducting kinetic calculations and modeling.
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