Regulating superstructures of conjugated polymers towards enhanced and stable photocatalytic hydrogen evolution via covalent crosslinking and complementary supramolecular self-assembly

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 671, P. 779 - 789

Published: May 29, 2024

Language: Английский

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Synthesis of 9,9′-Bifluorenylidene-Based Porous Aromatic Frameworks (BF-PAFs) for Photocatalytic Production of Hydrogen Peroxide

Synthesis, Journal Year: 2024, Volume and Issue: 56(22), P. 3503 - 3511

Published: Aug. 1, 2024

Abstract Photocatalytic technology is considered to be a sustainable strategy convert H2O and O2 into H2O2. However, constructing photocatalytically active stable organic photocatalyst remain challenge. In this study, new class of porous aromatic framework photocatalysts (BF-PAFs) were designed synthesized, in which 9,9′-bifluorenylidene (99′-BF) different alkynes are alternately connected. The BF-PAFs constructed served as for H2O2 synthesis. Experimental results show that the introduction can effectively regulate optical band gap energy structure, may further determine their photocatalytic performance. Upon visible light irradiation, PAF-370 exhibits high efficiency photosynthesis with production rate 730 μmol g–1 h–1 presence sacrificial reagent from water oxygen via reduction reaction (ORR) pathway. Furthermore, up 61 could generated system after 14 hours.

Language: Английский

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Ternary conjugated microporous polymer boosted photocatalytic hydrogen evolution via dual heterocyclic strategy

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 82, P. 407 - 415

Published: Aug. 2, 2024

Language: Английский

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Highly photocatalytic materials based on the decoration of poly(O-chloroaniline) with molybdenum trichalcogenide oxide for green hydrogen generation from Red Sea water

Green Processing and Synthesis, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 1, 2024

Abstract Utilizing an innovative and highly light-absorbing photocathode, the direct conversion of hydrogen gas from Red Sea water is achieved. This involves creating a new nanocomposite thin film through one-pot synthesis method, combining poly( O -chloroaniline) with trichalcogenides (MoS 3 ) MoO –molebednium oxide/poly(o-chloroaniline)). has remarkable morphological optical properties potential as photocathode for generation by harnessing power water. exhibits unique semi-spherical architecture, average size around 150 nm. These particles are surrounded dense network fibers, forming complex structure that provides ample space trapping photons when exposed to light. The distinctive morphology significantly influences this nanocomposite, showing strong absorbance across wide range wavelengths up ∼700 nm, promising bandgap 1.75 eV. quantified measuring generated photocurrent density ( J ph function light incidence frequency using various filters at fixed −0.8 V. highest values recorded −0.558 −0.553 mA·cm −2 340 440 respectively; value reaches its maximum white wavelength −0.63 . Elevating temperature 30°C 50°C results in substantial enhancement values, increasing −0.71 , respectively. increase leads noteworthy improvement incidnce photon current 1.85% 2.22%. photoelectrode demonstrates not only cost-effectiveness but also eco-friendliness, making it attractive choice H 2 natural, environmentally friendly, economically viable source. Consequently, study holds significant promise industrial applications due economic eco-friendly characteristics.

Language: Английский

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Local Weak Hydrogen Bonds Induced Dipole-Dipole Interactions in Polymer for Enhancing Photocatalytic Oxidation

Published: Jan. 1, 2024

Functionalizing organic polymers represents an effective strategy for enhancing their photocatalytic performance. However, this approach is currently limited by the specific motifs and complexity preparation methods as well obscure electron transfer mechanism. Here, a precisely engineered structure of perylene diimide (PDI) connected with controlled trimer barbituric acid through self-assembled hydrogen bonding has been devised. Notably, local chemical environment two components adjusted bond-induced dipole-dipole interactions, resulting in emergence substantial inherent electric field electronic transmission pathways promoting charge exciton dissociation. Additionally, unique facilitates polarity to reactive molecule its activation adsorption capabilities. Ultimately, B-PDI exhibited outstanding oxidation benzylamine N-benzylidenebenzylamine rate (10.03 mmol g-1 h-1) selectivity (>99.99%).

Language: Английский

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The optoelectronic device with high efficiency for the incidence photons based on silver iodide/poly-2-aminobenzenethiol-intercalated iodide ion nanowire composite

Polymer Bulletin, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 13, 2024

Language: Английский

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Local Weak Hydrogen Bonds Induced Dipole-Dipole Interactions in Polymer for Enhancing Photocatalytic Oxidation

Published: Jan. 1, 2024

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Language: Английский

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Thienyl-fused dibenzothiophene-S,S-dioxide based conjugated polymer toward highly efficient photocatalytic hydrogen production

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 80, P. 115 - 124

Published: July 14, 2024

Language: Английский

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Pyrene- and Benzothiadiazole-Based Mixed-Ligand D–A Metal–Organic Framework for the Enhancing Photocatalytic Aerobic Oxidation of Organic Sulfides

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Language: Английский

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Highly planar charge transport channels in novel thiophene S,S-dioxide-based polymers for efficient photocatalytic CO2-to-CO conversion

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129942 - 129942

Published: Oct. 1, 2024

Language: Английский

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