Breaking Barriers: Synergistic Interactions Between Pt Single Atoms and Nitrogen‐Rich g‐C3N4 for Maximized Photocatalytic Hydrogen Production DOI
Dharmendra Kumar Yadav,

Saloni Latiyan,

Rupesh S. Devan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 26, 2025

Abstract Designing an active catalyst and in situ route for the decoration of single atoms (SA) on graphitic carbon nitride (C 3 N 4 ) toward efficient photocatalytic H 2 evolution reaction has been a wide area focus. However, ultralow loading SAs miniaturizing with excess nitrogen maximized production from water remains challenging. Herein, simple novel method is demonstrated to fasten concentration Pt atom (0.08 wt.%) template‐based N‐rich C 4.6 via thermal polymerization acid leaching get visible light irradiation‐based rate 64100 µmol g −1 h , apparent quantum yield 25.3%, long‐term stability. The synthesis process involves initially attaching platinum complex SBA‐15, dicyandiamide, formation anchored surface . are found coordinate interact sites alter electronic structure atomically dispersed species not only act as sink photoexcited electrons but also work reduction facilitate faster kinetics than NP decorated highlighting potential ultralow‐loading Pt‐SACs promoting sustainable production.

Language: Английский

Lewis Acid‐Base Bifunctional Ionic Covalent Organic Frameworks for CO2 Chemical Fixation DOI
Ping Liu, Tiantong Zhao,

Zhao Fang-fang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Abstract Ionic covalent organic frameworks (iCOFs) exhibit unique advantages as heterogeneous catalysts due to their permanent porosity, programmable charge transport, and tunable host‐guest interactions. Here, the fabrication of cationic iCOFs via direct solvothermal assembly integrate zinc ions (Zn(II))‐imine centers are reported construct bifunctional catalysts. The resultant catalyst, Zn@PD‐iCOF, achieves remarkable yields (up 99%) cyclic carbonates in carbon dioxide (CO 2 )‐epoxides cycloaddition reactions under mild conditions (at 80 °C, 0.1 MPa CO ) without need for co‐catalysts solvents, superior most previously ionic This exceptional performance stems from hierarchically ordered pores structure, fully exposed dual active sites (ion pair Lewis acid site), synergistic electronic coupling. Moreover, catalyst retains >90% activity over twelve consecutive cycles, demonstrating stability. study establishes a blueprint designing task‐specific COFs efficient chemical fixation.

Language: Английский

Citations

0
Breaking Barriers: Synergistic Interactions Between Pt Single Atoms and Nitrogen‐Rich g‐C3N4 for Maximized Photocatalytic Hydrogen Production DOI
Dharmendra Kumar Yadav,

Saloni Latiyan,

Rupesh S. Devan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 26, 2025

Abstract Designing an active catalyst and in situ route for the decoration of single atoms (SA) on graphitic carbon nitride (C 3 N 4 ) toward efficient photocatalytic H 2 evolution reaction has been a wide area focus. However, ultralow loading SAs miniaturizing with excess nitrogen maximized production from water remains challenging. Herein, simple novel method is demonstrated to fasten concentration Pt atom (0.08 wt.%) template‐based N‐rich C 4.6 via thermal polymerization acid leaching get visible light irradiation‐based rate 64100 µmol g −1 h , apparent quantum yield 25.3%, long‐term stability. The synthesis process involves initially attaching platinum complex SBA‐15, dicyandiamide, formation anchored surface . are found coordinate interact sites alter electronic structure atomically dispersed species not only act as sink photoexcited electrons but also work reduction facilitate faster kinetics than NP decorated highlighting potential ultralow‐loading Pt‐SACs promoting sustainable production.

Language: Английский

Citations

0