S-scheme graphitic carbon nitride/nickel titanate (g-C3N4/NiTiO3) heterojunction as bifunctional photocatalysts for hydrogen production and pollutants degradation

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 114, P. 60 - 70

Published: March 1, 2025

Language: Английский

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Tetraphenylanthraquinone and Dihydroxybenzene-Tethered Conjugated Microporous Polymer for Enhanced CO₂ Uptake and Supercapacitive Energy Storage

JACS Au, Journal Year: 2024, Volume and Issue: 4(9), P. 3593 - 3605

Published: Aug. 16, 2024

Conjugated microporous polymers (CMPs) feature extended excellent porosity properties and fully conjugated electronic systems, making them highly effective for several uses, including photocatalysis, dye adsorption, CO2 capture, supercapacitors, so on. These are known their high specific surface area adjustable porosity. To synthesize DHTP-CMPs (specifically TPE-DHTP CMP Anthra-DHTP CMP) with abundant nitrogen (N) oxygen (O) adsorption sites spherical structures, we employed a straightforward Schiff-base [4 + 2] condensation reaction. This involved using 2,5-dihydroxyterephthalaldehyde (DHTP-2CHO) as the primary building block phenolic OH group source, along two distinct structures: 4,4′,4″,4"'-(ethene-1,1,2,2-tetrayl)tetraaniline (TPE-4NH2) 4,4′,4″,4"'-(anthracene-9,10-diylidenebis(methanediylylidene))tetraaniline (Anthra-4Ph-4NH2). The synthesized had remarkable BET (BETSA) of 431 m2 g–1. Additionally, it exhibited outstanding thermal stability, shown by Td10 505 °C. Furthermore, practical implementation, demonstrates significant capacity capturing CO2, measuring 1.85 mmol g–1 at temperature 273 K 1 bar. In three-electrode test, has capacitance 121 F 0.5 A even after undergoing 5000 cycles, maintains retention rate 79%. Due to pore characteristics, N O, conjugation properties, this Anthtra-DHTP holds potential capture supercapacitor applications. work will pave way development materials based on postmodification additional groups, facilitating use in photodegradation, lithium battery applications,

Language: Английский

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Tetrabenzonaphthalene and Redox-Active Anthraquinone-Linked Conjugated Microporous Polymers as Organic Electrodes for Enhanced Energy Storage Efficiency

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(13), P. 5582 - 5593

Published: June 22, 2024

Various energy storage systems widely utilize conjugated microporous polymers (CMPs) due to their porous architecture and expansive surface area, which facilitate efficient ion transport storage. In our research, we developed two anthraquinone (ATQ)-based CMPs (ATQ-CMPs) through a Sonogashira coupling method. We used 2,6-dibromoanthraquinone (ATQ-Br2), redox-active precursor, as building monomer along with an ethynyl derivative of triphenylamine (TPA-T) tetrabenzonaphthalene (TBN-T) afford TPA-ATQ CMP TBN-ATQ CMP, respectively. employed techniques, such thermogravimetric analysis, high-resolution transmission electron microscopy (HR-TEM), scanning (SEM), Fourier-transform infrared spectroscopy (FTIR), characterize the structure thermal properties these ATQ-CMPs. The displayed extensive Brunauer–Emmett–Teller (BET) areas (SBET = 161 m2 g–1) remarkable stability (temperatures up 605 °C). These made it excellent candidate for supercapacitor (SC) electrode materials. electrodes fabricated using exhibited exceptionally significant specific capacitance 393 F g–1 when tested at current density 1 A g–1. After 5000 cycles 10 g–1, still had 74.2% in three-electrode setup. also symmetrical device CMP. This 175 was very stable over 2000 cycles, keeping 92.8% its capacitance. has better electrochemical performance because ATQ unit high SBET. Our findings pave way simple methods developing producing materials TBN high-performance SCs both three- two-electrode configurations.

Language: Английский

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Construction of fully π-conjugated, diyne-linked conjugated microporous polymers based on tetraphenylethene and dibenzo[g,p]chrysene units for energy storage

Polymer Chemistry, Journal Year: 2024, Volume and Issue: 15(28), P. 2827 - 2839

Published: Jan. 1, 2024

Using a palladium-catalyzed alkyne–alkyne coupling reaction, we successfully synthesized TPE-Diyne CMP as an organic electrode for supercapacitor applications.

Language: Английский

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Boosting Supercapacitor Energy Storage Using Microporous Carbon Derived from an Octavinylsilsesquioxane and Fluorenone-Linked Porous Hybrid Polymer

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(17), P. 7505 - 7516

Published: Aug. 22, 2024

Supercapacitors (SCs), with their exceptional properties, offer a promising solution to the ongoing energy crisis, addressing growing demand for high-energy storage devices. Polymeric organic porous materials (POIPs) exhibit various sizes, precisely controlled porosities, lightweight nature, extensive surface areas, impressive intrinsic porosity, attractive chemistry, outstanding stability, and customizable structures functionalities. These features collectively render POIPs as cost-effective material applications in storage. This study successfully synthesized an octavinylsilsesquioxane (OVS)-FO-POIP through Heck coupling reaction between OVS 2,7-dibromo-9H-fluoren-9-one (DBFO). Confirmation of OVS-FO-POIP's chemical structure was achieved using solid-state 13C 29Si NMR Fourier transform infrared analyses. Subsequently, carbonization KOH activation at 900 °C yielded carbon material, denoted OVS-FO-POIP-900. Microporous characteristics were evidenced by specific area (SBET) values 264 m2 g–1 OVS-FO-POIP 387 OVS-FO-POIP-900 corresponding pore diameters 1.90 1.59 nm, respectively. Notably, demonstrated improved particular capacitance 776 F compared that (271 g–1) current density 1 A g–1, addition retention up 79% after 6000 cycles. The heightened enhances probability electrochemical reactions, thereby elevating levels. To delve deeper into performance, symmetric devices constructed both OVS-FO-POIP-900, exhibiting capacitances 167 268 Remarkably, performance these assessments, suggesting its potential suitability SC applications.

Language: Английский

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Hydrogen storage via adsorption: A review of recent advances and challenges

Fuel, Journal Year: 2025, Volume and Issue: 387, P. 134273 - 134273

Published: Jan. 10, 2025

Language: Английский

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Thianthrene- and Thianthrene Tetraoxide-Functionalized Conjugated Microporous Polymers for Efficient Energy Storage

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

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Rational Engineering and Synthesis of Pyrene and Thiazolo[5,4-d]thiazole -Functionalized Conjugated Microporous Polymers for Efficient Supercapacitor Energy Storage

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(44), P. 30508 - 30521

Published: Jan. 1, 2024

The Py-Th-TzTz CMP was synthesized through a Schiff base reaction and exhibited decomposition temperature ( T d10 ) of 352 °C. In three-electrode system, it demonstrated specific capacitance 652 F g −1 .

Language: Английский

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Efficient synthesis of main chain thermosetting polybenzoxazine resin containing tert-butylcyclohexanone and diphenylmethane units for supercapacitor energy storage

European Polymer Journal, Journal Year: 2024, Volume and Issue: unknown, P. 113519 - 113519

Published: Oct. 1, 2024

Language: Английский

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Synthesis of conjugated copolymers containing NBF2O units and their application for photocatalytic hydrogen evolution

European Polymer Journal, Journal Year: 2025, Volume and Issue: 227, P. 113764 - 113764

Published: Jan. 30, 2025

Language: Английский

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