Light-Induced Variation of Lithium Coordination Environment in g-C₃N₄ Nanosheet for Highly Efficient Oxygen Reduction Reactions

ACS Nano, Journal Year: 2024, Volume and Issue: 18(6), P. 5206 - 5217

Published: Jan. 31, 2024

The structure and electronic state of the active center in a single-atom catalyst undergo noticeable changes during dynamic catalytic process. metal atom is not well demonstrated manner. This study that Li atoms, serving as centers, can migrate on C3N4 monolayer or between monolayers when exposed to light irradiation. migration alters local coordination environment nanosheets, leading significant enhancement photocatalytic activity. H2O2 process could be maintained for 35 h with 920 mmol/g record-high yield, corresponding 0.4% concentration, which far greater than value (0.1%) practical application wastewater treatment. Density functional theory calculations indicated Li-coordinated structures contributed superhigh

Language: Английский

---

Linkage-engineered donor–acceptor covalent organic frameworks for optimal photosynthesis of hydrogen peroxide from water and air

Nature Catalysis, Journal Year: 2024, Volume and Issue: 7(2), P. 195 - 206

Published: Feb. 13, 2024

Language: Английский

---

Achieving ultra-trace analysis and multi-light driven photodegradation toward phenolic derivatives via a bifunctional catalyst derived from a Cu(i)-complex-modified polyoxometalate

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(5), P. 1561 - 1572

Published: Jan. 1, 2024

A polyoxometalate-based bifunctional catalyst was applied for the “nM” detection of phenolic derivatives, and exhibited good removal efficiencies under UV light, visible NIR full spectrum sunlight irradiation to phenol.

Language: Английский

---

Recent advances, application and prospect in g-C3N4-based S-scheme heterojunction photocatalysts

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 330, P. 125302 - 125302

Published: Oct. 12, 2023

Language: Английский

---

Near-Infrared-II-Activatable Self-Assembled Manganese Porphyrin-Gold Heterostructures for Photoacoustic Imaging-Guided Sonodynamic-Augmented Photothermal/Photodynamic Therapy

ACS Nano, Journal Year: 2023, Volume and Issue: 18(1), P. 713 - 727

Published: Dec. 20, 2023

Porphyrins and their derivatives are widely used as photosensitizers sonosensitizers in tumor treatment. Nevertheless, poor water solubility low chemical stability reduce singlet oxygen (1O2) yield and, consequently, photodynamic therapy (PDT) sonodynamic (SDT) efficiency. Although strategies for porphyrin molecule assembly have been developed to augment 1O2 generation, there is scope further improving PDT SDT efficiencies. Herein, we synthesized ordered manganese (SM) nanoparticles with well-defined self-assembled metalloporphyrin networks that enabled efficient energy transfer enhanced photocatalytic sonocatalytic activity production. Subsequently, Au were grown situ on the SM surface by anchoring terminal alkynyl of form plasmonic SMA heterostructures, which showed excellent near-infrared-II (NIR-II) region absorption photothermal properties, facilitated electron–hole pair separation transfer. With modification hyaluronic acid (HA), SMAH heterostructure nanocomposites exhibited good actively targeted cancer cells. Under NIR-II light ultrasound (US) irradiation, generates hyperthermia, a large amount 1O2, inducing cell damage. Both vitro vivo studies confirmed effectively suppressed growth decreasing GSH levels SDT-augmented PDT/PTT. Moreover, utilizing strong window, can achieve photoacoustic imaging-guided combined This work provides paradigm enhancing metalloporphyrins improve synergistic therapeutic effect SDT/PDT/PTT.

Language: Английский

---

Spaced Double Hydrogen Bonding in an Imidazole Poly Ionic Liquid Composite for Highly Efficient and Selective Photocatalytic Air Reductive H₂O₂ Synthesis

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(15)

Published: Feb. 15, 2024

Abstract Photocatalytic oxygen reductive H 2 O production is a promising approach to alternative industrial anthraquinone processes while suffering from the requirement of pure feedstock for practical application. Herein, we report spaced double hydrogen bond (IC−H‐bond) through multi‐component Radziszewski reaction in an imidazole poly‐ionic‐liquid composite (SI‐PIL‐TiO ) and levofloxacin hydrochloride (LEV) electron donor highly efficient selective photocatalytic air production. It found that IC−H‐bond formed by imino (−NH−) group SI‐PIL‐TiO carbonyl (−C=O) LEV can switch active sites characteristic covered state fully exposed one shield strong adsorption N air, propel intenser positive potential more orbitals binding patterns surface establish competitive selectivity chemisorption. Moreover, high enrichment as site 2e − reduction ensures rapid . Therefore, enables total utilization conversion efficiency 94.8 % direct reduction, achieving rate 1518 μmol/g/h 16 23 times compared without groups (PIL‐TiO TiO , respectively.

Language: Английский

---

Innovative Conversion Strategy for Wastewater with One‐Pot Uranium Extraction and Valuable Chemical Production by a Smart COF Photocatalyst

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 15, 2024

Abstract Environmental protection and resource reclamation make the extraction of uranium from uranium‐containing wastewater be a key role in nuclear chemistry industry. Although previous studies have revealed several effective methods materials for such use, however, few are concerned about discharge issues. In fact, direct treated into environment is still not green way. Here, an innovative conversion approach shown, which can simultaneously achieve to valuable chemical. This concept implemented by azobenzene‐pendent covalent organic framework, showing smart trans ‐to‐ cis photoresponsive properties both space electronic structure consequently, largely enhanced efficiency under UV irradiation, relative visible light irradiation. real wastewater, material found give selective 100% H 2 O generation (1872.3 µmol g −1 h ). The mechanism due unique photocatalysis coupling between reduction reaction (URR), aiming at recovery or removal, water oxidation (WOR), targeting chemical .

Language: Английский

---

Anthraquinone centers modified covalent organic frameworks for boosted photocatalytic O2-to-H2O2 synthesis: Inhibiting the in-situ decomposition of H2O2

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148494 - 148494

Published: Jan. 4, 2024

Language: Английский

---

H₂O₂ Photosynthesis from H₂O and O₂ under Weak Light by Carbon Nitrides with the Piezoelectric Effect

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(30), P. 21147 - 21159

Published: July 16, 2024

Driven by the essential need of a green, safe, and low-cost approach to producing H

Language: Английский

---

Iso‐Elemental ZnIn₂S₄/Zn₃In₂S₆ Heterojunction with Low Contact Energy Barrier Boosts Artificial Photosynthesis of Hydrogen Peroxide

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 27, 2024

Abstract Artificial photosynthesis emerges as a strategic pathway to produce hydrogen peroxide (H 2 O ), an environmentally benign oxidant and clean energy carrier. Nonetheless, in many heterojunction‐based artificial photosynthetic systems, the H productivity is significantly hindered by poor carrier transport, narrow spectral light absorption, lack of adequate active sites for two‐electron oxygen reduction reaction. Herein, catalyst architecture with iso‐elemental heterojunction formed interfacing Zn 3 In S 6 nano‐flowers ZnIn 4 nanosheets proposed. This exhibits production rate high 23.47 µmol g −1 min under UV–vis irradiation, which attributed minimized contact barrier enhanced lattice match at /Zn interface thanks aids efficient separation transfer photogenerated carriers. Theoretical simulations alongside comprehensive in‐situ ex‐situ characterizations confirm photo‐redox generation effective dynamics across surface. Moreover, substituting one reduction‐type other non‐iso‐elemental catalysts like CdIn , TiO CdS further confirms feasibility superiority proposed configuration. work offers new perspective on designing .

Language: Английский

---