Phosphorus Doped Magnetic Biochar Activated Pms for Effective Degradation of Pesticide in Water: Targeted Regulation of Interfacial Charge Transfer by Phosphorus Doping DOI
Xuetao Liang, Yujie Zhao,

bingyang liu

et al.

Published: Jan. 1, 2023

In this study, the incorporation of phosphorus (P) atoms into magnetic biochar was strategically achieved, and preparation conditions composites were optimized by adjusting pyrolysis temperature iron doping. The resulting P-doped (Fe2P@BC-700) exhibited remarkable catalytic activity towards peroxymonosulfate (PMS), rendering it highly effective for degradation common organic pesticides, such as 2-Methyl-4-chlorophenoxyacetic acid (MCPA), in aqueous environments. Among them, apparent rate constant oxidation stage 6.42 times large that (Fe2BC-700). This attributed to fact introduced P species tuned surface electronic configuration pristine carbon layer with excellent electron storage transport capabilities, Fe-O-P bonds acted bridges promote cycling nanoparticles during catalysis. elimination MCPA constructed adsorption enrichment-oxidative system (Fe2P@BC-700/PMS) achieved through a non-radical pathway dominated singlet oxygen. It also ensured broad pH adaptability, environmental stability repeatability. Density-functional theory calculated ROS tended attack C-Cl branched chain products showed tendency toxicity reduction. study provided new ideas design market-oriented functional catalysts.

Language: Английский

Z-Scheme Heterojunction α-Fe2O3/Tubular g-C3N4 with C Defects for Photocatalytic Degradation of Microcystin-LR in Water: Generation and Effect of Critical Species 1O2 DOI

Haoxiang Zhong,

Xiaodong Ji,

Cheng Yang

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 6272 - 6291

Published: April 10, 2024

Microcystin-LR (MC-LR) is susceptible to degradation by singlet oxygen (1O2) attack due multiple unsaturated olefinic bond sites. In this study, the Z-scheme heterojunction α-Fe2O3/tubular g-C3N4 with C defects (α-Fe2O3/TDCN) was synthesized via hydrothermal and cocalcination methods. The efficient generation of 1O2 realized enhancing photogenerated carrier separation adsorption capabilities used investigate process mechanism MC-LR. results show that rate MC-LR can reach nearly 100% within 60 min under visible light irradiation, α-Fe2O3/TDCN possesses good stability environmental friendliness. relationship between photocatalyst performance analyzed density functional theory (DFT) calculations. Based on probe experiments, LC–MS data, DFT calculations, mineralization dominated analyzed. This study provides a reference for addressing pollution in eutrophic aquatic environments direction specific control mineralization.

Language: Английский

Citations

27
Exciton Dissociation into Charge Carriers in Porphyrinic Metal‐Organic Frameworks for Light‐Assisted Li‐O2 Batteries DOI
Bo Wen, Yaohui Huang, Zhuoliang Jiang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(32)

Published: May 27, 2024

Abstract Light‐assisted Li‐O 2 batteries exhibit a high round‐trip efficiency attributable to the assistance of light‐generated electrons and holes in oxygen reduction evolution reactions. Nonetheless, excitonic effect arising from Coulomb interaction between impedes carrier separation, thus hindering efficient utilization photo‐energy. Herein, porphyrinic metal‐organic frameworks with (Fe Ni)O(COO) 6 clusters are used as photocathodes accelerate exciton dissociation into charge carriers for light‐assisted batteries. The coupling Ni 3d Fe orbitals boosts ligand‐to‐metal cluster transfer, hence drives activates O superoxide ( • − ) radicals, rather than singlet 1 under photoexcitation. These enable low total overvoltage 0.28 V 92% light irradiation 100 mW cm −2 . This work highlights photoelectrochemical processes provides insights photocathode design

Language: Английский

Citations

16
Singlet‐Oxygen‐Driven Cooperative Photocatalytic Coupling of Biomass Valorization and Hydrogen Peroxide Production Using Covalent Organic Frameworks DOI Open Access
Qiang Xue, Hanxi Li, Peng Jin

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Traditional H 2 O photocatalysis primarily depends on photoexcited electrons and holes to drive oxygen reduction water oxidation, respectively. However, singlet ( 1 ), often underappreciated, plays a pivotal role in production. Meanwhile, photocatalytic biomass conversion has attracted attention, yet studies combining synthesis with valorization remain rare typically yield low‐value products. Herein, strategy of furfuryl alcohol (FFA) coupled the efficient co‐production is reported, enabled by covalent organic frameworks (COFs) induced, ‐participated Achmatowicz rearrangement. This study introduces polyimide‐based COF‐N 0‐3 tailored nitrogen content, representing an unprecedently platform for Remarkably, reducing content COF enhances production, significantly boosting generation rate. In FFA, primary pathway production rearrangement, achieving rate ten times higher than that reliant reaction pure water, reaching 4549 µmol g⁻¹ h⁻¹. Mechanism revealed selectively engaged bypassing hole oxidation trigger producing valuable 6‐hydroxy‐(2H)‐pyranone 99% 92% selectivity. work establishes coupling simultaneous biochemicals, offering transformative approach sustainable photocatalysis.

Language: Английский

Citations

1
Targeting Hydrogel for Intelligent Recognition and Spatiotemporal Control in Cell‐Based Therapeutics DOI Creative Commons
Weilin Hou, Wei Mao, Jun Sun

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(30)

Published: June 14, 2024

Abstract Smart drug platforms based on spatiotemporally controlled release and integration of tumor imaging are expected to overcome the inefficiency uncertainty traditional theranostic modes. In this study, a composite consisting thermosensitive hydrogel (polyvinyl alcohol‐carboxylic acid (PCF)) multifunctional nanoparticle (Fe 3 O 4 @Au/Mn(Zn)‐4‐carboxyphenyl porphyrin/polydopamine (FAM x P)) is developed combine immunogenic cell death (ICD)/immune checkpoint blockade (ICB) therapy under guidance magnetic resonance (MRI) fluorescence (FI). It can not only further recognize target cells through folate receptor cells, but also produce thermal dissolution after exposure near‐infrared light slowly FAM P in situ, thereby prolonging treatment time avoiding recurrence. As entered it released pH‐dependent manner. Chemodynamic, photothermal photodynamic cause significant ICD cancer cells. ICB thus be enhanced by injecting anti‐programmed ligand 1, improving effectiveness treatment. The PCF‐FAM may represent an updated design approach with simple compositions for cooperative MRI/FI‐guided targeted therapeutic pathways tumors.

Language: Английский

Citations

6
Photo- and Oxygen- Synergistically Controlled Selective Expression of Organic Phosphorescence Units DOI

Huiwen Jin,

Lin Han, Lijuan Bu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(12), P. 15133 - 15142

Published: March 15, 2024

Dynamic control of ultralong organic room-temperature phosphorescence (UORTP) is a charming target. Herein, we report stimuli-responsive unit 7H-indolo[2,3-c]quinoline (NBCz) and its derivatives (PCBNBCz, FSO2NBCz, N2BCzSO2NBCz) that show photo- oxygen- synergistically induced afterglow activation color change in the PMMA film. PCBNBCz FSO2NBCz feature donor–acceptor (D–A) structure, N2BCzSO2NBCz features acceptor-bridged two different units (NBCz N2BCz). The photoactivated UORTP arises from photoinduced consumption oxygen It clear NBCz contributes to subsequent because NBCz-doped film shows same process. ESR HRMS measurements confirmed oxidation occurs at nitrogen atom quinoline ring via photogenerated superoxide radicals, which results change. TDDFT calculations proved after NBCz, T1 energy level declines significantly. Furthermore, photocontrolled selective expression achieved case N2BCzSO2NBCz. After further UV irradiation, happened, oxidized form N2BCzSO2NBCz-O emitted intrinsic orange NBCz-O selectively screened yellowish-green N2BCz. Finally, multilevel photolithography can be demonstrated based on This work may give deep insight into pave simple way for development stimulus-responsive smart materials.

Language: Английский

Citations

5
Self-Assembly of Functionalized Twistarenes into Supramolecular Assemblies with Chiroptical Property and Photoconductive Behavior DOI

Zewei Qi,

Sujuan Wang,

Bingliang Ji

et al.

Organic Letters, Journal Year: 2024, Volume and Issue: 26(4), P. 781 - 785

Published: Jan. 19, 2024

A pair of novel chiral 1-phenylethylamine-modified twistarenes (4 and 11; compound 4 = 9,14-di-tert-butyl-7,16-diphenyl-2-(1-phenylethyl)-1H-benzo[8',9']triphenyleno[2',3':6,7]fluoreno[2,1,9-def]isoquinoline-1,3(2H)-dione) have been synthesized characterized, how the solvent component affects chirality transfer their self-assembled processes is investigated in mixtures with THF H2O. The ordered assembly 11 exhibits circular dichroism response. In addition, both 11a 11b display positive photoconducting behavior.

Language: Английский

Citations

4
Simultaneous removal of organic matters and phosphorus by a novel dielectric barrier discharge coupled with CaO2 system: Feasible and mechanism DOI

Haoran Guo,

Yongchun Wang,

Yexiang Yang

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129519 - 129519

Published: Sept. 5, 2024

Language: Английский

Citations

4
Singlet‐Oxygen‐Driven Cooperative Photocatalytic Coupling of Biomass Valorization and Hydrogen Peroxide Production Using Covalent Organic Frameworks DOI Open Access
Qiang Xue, Hanxi Li, Peng Jin

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Traditional H 2 O photocatalysis primarily depends on photoexcited electrons and holes to drive oxygen reduction water oxidation, respectively. However, singlet ( 1 ), often underappreciated, plays a pivotal role in production. Meanwhile, photocatalytic biomass conversion has attracted attention, yet studies combining synthesis with valorization remain rare typically yield low‐value products. Herein, strategy of furfuryl alcohol (FFA) coupled the efficient co‐production is reported, enabled by covalent organic frameworks (COFs) induced, ‐participated Achmatowicz rearrangement. This study introduces polyimide‐based COF‐N 0‐3 tailored nitrogen content, representing an unprecedently platform for Remarkably, reducing content COF enhances production, significantly boosting generation rate. In FFA, primary pathway production rearrangement, achieving rate ten times higher than that reliant reaction pure water, reaching 4549 µmol g⁻¹ h⁻¹. Mechanism revealed selectively engaged bypassing hole oxidation trigger producing valuable 6‐hydroxy‐(2H)‐pyranone 99% 92% selectivity. work establishes coupling simultaneous biochemicals, offering transformative approach sustainable photocatalysis.

Language: Английский

Citations

0
Reversible gating of singlet fission by tuning the role of a charge-transfer state DOI Creative Commons
Yifan Bo, Yuxuan Hou,

Dominic A. X. Lavergne

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 26, 2025

Abstract Stimulus-responsive triplet excited states and multiexcitonic logic gates have garnered increasing interest. Singlet fission is an efficient multiple exciton generation process, in which one singlet converts into two triplets. is, however, rarely reported to be switchable by external stimuli. Here we design a meta -diethynylphenylene-linked tetracene dimer featuring pyridyl endgroups that function as acid/base-responsive switch, enabling the reversible modulation of fission. In its neutral form, interchromophore charge-transfer state facilitates promotes formation correlated triplet-pair state. Upon treatment with acid, protonation nitrogens generates more strongly electron-accepting pyridinium, leading intra-chromophore state, inhibits Finally, IMPLICATION gate constructed using acid base inputs monitoring based on

Language: Английский

Citations

0
Photochemical afterglow with ultrabright lanthanide luminescence for homogeneous immunoassay DOI
Xiao Chen,

Chunling Li,

Ming Xu

et al.

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0