Immobilization of uranyl ions in water by covalent organic frameworks: In-situ utilization of the photocatalytic produced H2O2 DOI
Fei Han, Lisha Jiang, Wei Liu

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129946 - 129946

Published: Sept. 1, 2024

Language: Английский

Z-Scheme heterojunction Cu2(OH)3F/Bi2WO6 with improved photocatalytic activity for uranium removal from wastewater under air atmosphere DOI

Xiaozhao Xu,

Li-Juan Feng, Meng Cao

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 350, P. 128012 - 128012

Published: May 18, 2024

Language: Английский

Citations

7
Enhanced Photocatalytic Removal of U(VI) from Real Radioactive Wastewater by Modulating the Surface Charge Microenvironment in Porphyrin-Based Hydrogen-Bonded Organic Framework DOI

Peng Wu,

Yufan Zhao, Xiaoyu Yin

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(26), P. 33657 - 33668

Published: June 21, 2024

Reduction of soluble U(VI) to insoluble U(IV) based on photocatalysts is a simple, environmentally friendly, and efficient method for treating radioactive wastewater. The present study involved the systematic comparison photoelectric properties three metalloporphyrins with different metal centers synthesis novel porphyrin-based hydrogen-bonded organic framework (Ni-pHOF) photocatalyst by modulating surface charge microenvironment in porphyrin enhanced photocatalytic removal from Compared metal-free HOF, around Ni atom Ni-pHOF accelerated reduction kinetics under visible light illumination at initial moment, showing high rate, even air. rate aqueous solution can achieve over 98% presence coexisting nonoxidizing cations only decreased less than 8% after five cycles, exhibiting selectivity good reusability. Furthermore, remove 86.74% real low-level wastewater 120 min illumination, showcasing practical application potential. Density functional theory (DFT) calculations electron paramagnetic resonance (EPR) spectra indicated that through metallization conducive improving separation efficiency, prompting more e– •O2– participate reaction U(VI). This work provides new insights into HOFs paves way tailoring HOFs/COFs recovery

Language: Английский

Citations

5
Synthesis of isotype heterojunction by series calcination of multicomponent for high efficiency photocatalytic reduction of uranium DOI

Yean Zhu,

Zhiwen Wu,

Yidan Nie

et al.

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 333, P. 124625 - 124625

Published: Feb. 17, 2024

Language: Английский

Citations

4
Bismuth nanocluster loaded on N-doped porous carbon with “memory catalysis” effect for efficient photocatalytic H2 generation and uranium(VI) reduction DOI

Weidi Qin,

Yang Xiao,

Chunlei Zhang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151511 - 151511

Published: April 21, 2024

Language: Английский

Citations

4
Ti3C2Tx/Cd0.8Zn0.2S composites constructed of Schottky heterojunction for efficient photocatalytic reduction of U(VI) DOI

Yun Tian,

Luowen Xu,

Shuo Ning

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 470 - 480

Published: July 31, 2024

Language: Английский

Citations

4
Construction of a Hierarchical Core–Shell Z-Scheme Two-Dimensioanl/Two-Dimensional ZnIn2S4@TpBpy Heterostructure for Photocatalytic Reduction of U(VI) DOI
Lifu Sun, Xin Zhong

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

The essential nature of the photocatalytic process is charge transfer. To optimize spatial separation photogenerated electron–hole (e–-h+) pairs for high-performance catalytic efficiency, in this work, we have successfully prepared hierarchical core–shell two-dimensional (2D)/2D ZnIn2S4@TpBpy (ZIS@TpBpy) with well-matched Z-scheme interfacial transfer channels uranium (U(VI)) photoreduction. electron configuration was confirmed by internal electric field (IEF) formation analysis, XPS characterization, and DMPO spin-trapping EPR spectroscopy. With large specific surface area abundant active sites, ZIS@TpBpy composite achieved a U(VI) extraction rate 94.08%. In addition, removal constant (0.0137 min–1) 2.05 4.28 times higher than those TpBpy (0.0067 ZnIn2S4 (0.0032 min–1), respectively. First, combination organic inorganic components expanded range visible light absorption utilization. Afterward, under visible-light irradiation, more e–-h+ dissociated migrated to driven IEF heterostructure. Simultaneously, synergistic effect between polarization potential generated sites (N O atoms) framework further accelerated depletion translocation pairs, which significantly improved efficiency reduction U(VI).

Language: Английский

Citations

0
Cuprous-Sulfide-Nanoplate-Catalyzed Click Chemistry for In Situ Construction of Covalent Organic Polymer Heterostructures for Efficient Photocatalytic Reduction and Removal of U(VI) DOI
Li Zhang, Qiang Shi,

Sai Jin Xiao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14527 - 14536

Published: Feb. 18, 2025

In this study, a core–shell heterostructure of cuprous sulfide (Cu2S) nanoplates and covalent organic polymers (COPs) (Cu2S@COP) was constructed in situ by Cu2S-catalyzed azide–alkyne reaction for efficient reduction rapid removal U(VI) from uranium mine wastewater. The simple synthesis heterojunctions through click chemistry reactions can create tight bond at the interface evade laborious process conventional composites. different Fermi energy levels Cu2S COP induce formation built-in electric field within heterojunction, photogenerated charge transfer to nanoplate results substantial boost efficiency photocatalytic U(VI). Cu2S@COP heterojunction demonstrates high capacity 1164.6 mg g–1 without need sacrificial agent, which is 2.08 times higher than nanoplates, 3.02 COP, better most other previous heterostructures. present method involves good specificity achieves 85.9% preparation via provides new design concept composite construction presents novel strategy modulate activity contaminant management.

Language: Английский

Citations

0
Synergetic dual co-catalyst and interfacial bonds in N-CQDs/NCN/BNQDs to promote photoremoval of uranium(VI) DOI
Qixu Chen,

Qianxiang Xiao,

Feng He

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132193 - 132193

Published: Feb. 1, 2025

Language: Английский

Citations

0
Anchoring multi-mechanism coupled miniature redox reactors with photothermal foam gels for simultaneous photoreduction U(VI) and interfacial evaporation from wastewater DOI
Jialiang Yang, De−Bin Ji, Hark Hoe Tan

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145447 - 145447

Published: April 1, 2025

Language: Английский

Citations

0
Engineered covalent organic frameworks (COFs) for adsorption-based metal separation technologies: A critical review DOI
Brij Mohan, Muhammad Bilal Asif, Rakesh Kumar Gupta

et al.

Advances in Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 103507 - 103507

Published: April 1, 2025

Language: Английский

Citations

0