Selective Oxygen Activation by Integrating Dual Photosensitizers in Conjugated Porous Polymers and Microenvironments Manipulation for High‐Performance Water Purification and H2O2 Production DOI
Danfeng Wang,

Wuzi Zhao,

Feiyang Tan

et al.

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

Published: Nov. 27, 2024

Abstract Conjugated porous polymers (CPPs) are promising materials for water purification due to their capacity produce reactive oxygen species (ROS) under visible light. However, insufficient (O 2 ) adsorption and unselective O activation pathways prevent the efficiency of photodegradation refractory pollutants. Herein, strategy integrating dual photosensitizes into CPPs’ framework in a donor‐π‐acceptor conformation is proposed, combined with microenvironment modulation regulating exciton dynamic built‐in electric field, confer extraordinarily excellent selective high concentration singlet ( 1 production (1.30 × 10 6 µmol g −1 h ), being 3 fold superoxide radical · − yield. Consequently, BDP‐Por‐O exhibits unprecedently bisphenol A (BPA) removal, 100 ppm BPA degradation just 20 min, respectively. Additionally, photocatalytic hydrogen peroxide (H also shows satisfactory rate. Mechanistic investigations using femto‐second transient absorption spectroscopy, Kelvin probe force microscopy, situ diffuse reflectance infrared Fourier transform spectroscopy density functional theory calculations reveal impressive performance attributed efficient generation multiple effective sites access long‐lived excitons permitted by optimization. This work provides an outstanding avenue ROS would advance development photocatalysts treatment.

Language: Английский

Functionalized Modification of Conjugated Porous Polymers for Full Reaction Photosynthesis of H2O2 DOI Open Access

Xiaobo Luo,

Shiyuan Zhou, Zhou Sheng

et al.

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

Published: Oct. 16, 2024

Abstract Modulating the molecular structure to achieve full reaction including oxygen reduction and water oxidation is a promising strategy for efficient photosynthesis of hydrogen peroxide (H 2 O ) but remains challenge. Herein, triphenylamine naphthalimide‐based conjugated porous polymers are synthesized with photo oxidation‐reduction structures, then sulfonate (─SO 3 H) quaternary ammonium groups introduced via post‐modification produce two photocatalysts named NI‐TPA‐NI‐SO H NI‐TPA‐NI‐N, respectively. Introducing charged functional has improved hydrophilicity (O adsorption, beyond that, ─SO further stabilizes adsorbed bonding as well accelerates photogenerated carrier separation electron/proton transport that enables . Therefore, motivated by charge separation, stabilized boosted proton‐coupled electron transfer, exhibits highest light‐driven production rate among three photocatalysts, reaching 3.40 mmol g −1 h , which 4.9‐fold NI‐TPA‐NI. Remarkably, in presence ethylenediaminetetraacetic acid disodium salt, its significantly enhances 14.5 superior most reported organic best knowledge.

Language: Английский

Citations

6
The Direct Air Synthesis of Hydrogen Peroxide Induced by The Giant Built‐In Electric Field of Trz‐CN DOI Open Access
Haoyang Ma, Wenjun Jiang, Yinhua Ma

et al.

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

Published: Feb. 14, 2025

Graphitic carbon nitride (C3N4) has been identified as an optimal material for hydrogen peroxide (H2O2) photosynthesis, although its utility is hampered by a high photocarrier recombination rate. Herein, novel with giant built-in electric field (BEF), Trz-CN, synthesized through hydrothermal-calcination tandem strategy. The BEF (4.8-fold) induced the large dipole moment facilitated efficient separation and directional migration of photogenerated carriers. Trz-CN exhibited H2O2 production rate 569.9 µmol·g-1·h-1 using O2 feedstock under visible light (λ > 420 nm), marking impressive 11.2-fold enhancement compared to bulk C3N4. Utilizing air instead pure resulted in trivial 1.6% decrease generation while maintaining substantial 560.6 µmol·g-1·h-1. Notably, showcased sterilization 99.9% against Escherichia coli (E. coli) natural seawater. Density functional theory (DFT) calculations revealed that incorporating nitrogen-rich skeleton into C3N4 enhanced oxygen adsorption capacity lowered energy barrier formation. This leads photocatalytic performance ambient conditions. provides new exploratory idea direct synthesis ballast water treatment.

Language: Английский

Citations

0
Sub-stoichiometric Covalent Organic Frameworks with Boosted Photocatalytic Production of Hydrogen Peroxide via Promoting Proton-coupled Electron Transfer Kinetics DOI

Shengrong Yan,

Bingyan Zhang, Wenhao Liu

et al.

Chemical Research in Chinese Universities, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

Citations

0
Pyrrole-Assisted Molecular Engineering of Cellulose-Derived Polyfuran Photocatalysts for Efficient H2O2 Production DOI

Ying-Qing Wu,

Shiwei Yan,

Li Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125418 - 125418

Published: April 1, 2025

Language: Английский

Citations

0
Alkali‐Stable Metal–Organic Frameworks with Enhanced Electroconductivity for Black‐Brown Electrochromic Energy Storage Smart Window DOI Creative Commons
Xinyi Wang,

Zhiqiang Liu,

Heqi Ma

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Abstract Metal–organic frameworks (MOFs) deliver potential applications in electrochromism and energy storage. However, the poor intrinsic conductivity of MOFs electrolytes seriously hampers development above‐mentioned electrochemical applications, especially one MOF electrode. Herein, a new Ni‐based (denoted Ni‐DPNDI) is proposed with enhanced by π‐delocalized DPNDI connectors. Predictably, obtained Ni‐DPNDI achieves up to 4.63 S∙m −1 at 300 K. Profiting from its unique electronic structure, delivers excellent electrochromic storage performance great optical modulation (60.8%), fast switching speed ( t c = 7.9 s b 6.4 s), moderate specific capacitance (25.3 mAh·g ) good cycle stability over 2000 times. Meanwhile, capacity visual coloration states film. As proof application, large‐area (100 cm 2 smart window further designed displayed. The strategy provides an interesting alternative porous multifunctional materials for generation devices diverse applications.

Language: Английский

Citations

2
Diffusion-controlled charge separation in conjugated polymer heterojunctions for visible light-driven hydrogen production DOI Creative Commons
Fanpeng Meng, Fei Zhao, Jinsheng Zhao

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 131255 - 131255

Published: Dec. 1, 2024

Language: Английский

Citations

1
Selective Oxygen Activation by Integrating Dual Photosensitizers in Conjugated Porous Polymers and Microenvironments Manipulation for High‐Performance Water Purification and H2O2 Production DOI
Danfeng Wang,

Wuzi Zhao,

Feiyang Tan

et al.

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

Published: Nov. 27, 2024

Abstract Conjugated porous polymers (CPPs) are promising materials for water purification due to their capacity produce reactive oxygen species (ROS) under visible light. However, insufficient (O 2 ) adsorption and unselective O activation pathways prevent the efficiency of photodegradation refractory pollutants. Herein, strategy integrating dual photosensitizes into CPPs’ framework in a donor‐π‐acceptor conformation is proposed, combined with microenvironment modulation regulating exciton dynamic built‐in electric field, confer extraordinarily excellent selective high concentration singlet ( 1 production (1.30 × 10 6 µmol g −1 h ), being 3 fold superoxide radical · − yield. Consequently, BDP‐Por‐O exhibits unprecedently bisphenol A (BPA) removal, 100 ppm BPA degradation just 20 min, respectively. Additionally, photocatalytic hydrogen peroxide (H also shows satisfactory rate. Mechanistic investigations using femto‐second transient absorption spectroscopy, Kelvin probe force microscopy, situ diffuse reflectance infrared Fourier transform spectroscopy density functional theory calculations reveal impressive performance attributed efficient generation multiple effective sites access long‐lived excitons permitted by optimization. This work provides an outstanding avenue ROS would advance development photocatalysts treatment.

Language: Английский

Citations

0