Covalent organic frameworks: Fundamentals, mechanisms, modification, and applications in photocatalysis

Chem Catalysis, Journal Year: 2022, Volume and Issue: 2(9), P. 2157 - 2228

Published: July 14, 2022

Language: Английский

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Two-dimensional mineral hydrogel-derived single atoms-anchored heterostructures for ultrastable hydrogen evolution

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Oct. 21, 2022

Hydrogen energy is critical for achieving carbon neutrality. Heterostructured materials with single metal-atom dispersion are desirable hydrogen production. However, it remains a great challenge to achieve large-scale fabrication of atom-anchored heterostructured catalysts high stability, low cost, and convenience. Here, we report iron (Fe) atom-dispersed Mo-based nanosheets developed from mineral hydrogel. These rationally designed exhibit excellent evolution reaction (HER) activity reliability in alkaline condition, manifesting an overpotential 38.5 mV at 10 mA cm-2, superior stability without performance deterioration over 600 h current density up 200 most previously reported non-noble-metal electrocatalysts. The experimental functional theory results reveal that the O-coordinated Fe heterostructures greatly facilitated H2O adsorption enabled effective adsorbed (H*) adsorption/desorption. green, scalable production single-atom-dispersed HER electrocatalysts here significance promoting their implementation.

Language: Английский

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Single-atom catalysts for photocatalytic hydrogen evolution: A review

International Journal of Hydrogen Energy, Journal Year: 2022, Volume and Issue: 47(40), P. 17583 - 17599

Published: April 15, 2022

Language: Английский

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Atomic‐Level Regulated 2D ReSe₂: A Universal Platform Boostin Photocatalysis

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(19)

Published: Feb. 25, 2023

Solar hydrogen (H2 ) generation via photocatalytic water splitting is practically promising, environmentally benign, and sustainably carbon neutral. It important therefore to understand how controllably engineer photocatalysts at the atomic level. In this work, atomic-level engineering of defected ReSe2 nanosheets (NSs) reported significantly boost H2 evolution on various semiconductor including TiO2 , CdS, ZnIn2 S4 C3 N4 . Advanced characterizations, such as atomic-resolution aberration-corrected scanning transmission electron microscopy (AC-STEM), synchrotron-based X-ray absorption near edge structure (XANES), in situ photoelectron spectroscopy (XPS), transient-state surface photovoltage (SPV) spectroscopy, photoluminescence (PL) together with theoretical computations confirm that strongly coupled /TiO2 interface substantial active sites NSs result raised activity This work not only for first time realizes a versatile platform raise activities different photocatalysts, but, more importantly, underscores immense importance synthesis exploration 2D materials energy conversion storage.

Language: Английский

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Fluorenone-based covalent organic frameworks with efficient exciton dissociation and well-defined active center for remarkable photocatalytic hydrogen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122581 - 122581

Published: March 7, 2023

Language: Английский

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