Photocatalytic breaking of C-C bonds in lignin models by combining N-doped carbon nitride and persulfate in micellar aqueous medium

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 110854 - 110854

Published: Aug. 25, 2023

Language: Английский

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Exploiting MoSi₂N₄, WSi₂N₄ and WGe₂N₄ monolayers for efficient photocatalytic overall water splitting across a broad pH range

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(30), P. 13405 - 13412

Published: Jan. 1, 2024

Developing efficient and environmental photocatalysts for water dissociation is crucial sustainable energy solutions. The present work shows excellent photocatalytic potential of MoSi 2 N 4 , WSi WGe using density functional theory.

Language: Английский

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Phase-Controlled Ruthenium Nanocrystals on Colloidal Polydopamine Supports and Their Catalytic Behaviors in Aerobic Oxidation Reactions

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(30), P. 36676 - 36687

Published: July 24, 2023

The past decade has witnessed rapidly growing interest in noble metal nanostructures adopting unconventional metastable crystal phases. In the case of Ru, chemically synthesized nanocrystals typically form thermodynamically favored hexagonal close-packed (hcp) lattices, whereas it remains significantly more challenging to synthesize Ru face-centered cubic (fcc) phase. this work, we have polydopamine (PDA)-supported hcp and fcc a phase-selective manner through one-pot thermal reduction appropriate Ru(III) precursors polyol solvent. Benefiting from unique surface-adhesion function PDA, been able grow phase-controlled sub-5 nm directly on colloidal PDA supports without prefunctionalizing particle surfaces with any molecular linkers or surface-capping ligands. Success synthesis capping ligand-free dispersed same support material enables us systematically compare intrinsic mass-specific surface-specific activities nanocatalysts toward aerobic oxidation chromogenic substrate, 3,3',5,5'-tetramethylbenzidine (TMB), under broad range reaction conditions. We use UV-vis absorption spectroscopy monitor conversion reactant molecules into one-electron two-electron products real time during Ru-catalyzed TMB, which is found be mechanistically complex molecule-transforming process involving multiple elementary steps. apparent rates detailed kinetic features are observed not only intimately related crystalline structures but also profoundly influenced by several other critical factors, such as pH medium, initial concentration coverage supports, degree nanoparticle aggregation.

Language: Английский

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Phase engineering of Ru-based nanocatalysts for enhanced activity toward CO2 methanation

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2024, Volume and Issue: 61, P. 226 - 236

Published: June 1, 2024

Language: Английский

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