Conjugated microporous polymers incorporating Thiazolo[5,4-d]thiazole moieties for Sunlight-Driven hydrogen production from water

Samy, Maha Mohamed; Mekhemer, Islam M.A.; Mohamed, Mohamed Gamal; Elsayed, Mohamed Hammad; Lin, Kun‐Han; Chen, Yi-Kuan; Wu, Tien-Lin; Chou, Ho‐Hsiu; Kuo, Shiao‐Wei

doi:10.1016/j.cej.2022.137158

Cited by 59 publications

(33 citation statements)

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“…It reveals that the HER value of Py-TP-BTDO decreased with increasing concentration (Figure b). It should be noted that the absolute amount of the produced hydrogen gas increased with increasing concentration of Py-TP-BTDO from 50 to 100 mg L –1 and then remained relatively stable with an increase in concentration, suggesting the saturation effect of the polymer photocatalyst, which is also observed in the previous research. ,, Of note, an ultrahigh HER of 331.37 mmol h –1 g –1 was realized by Py-TP-BTDO (Figure b) at a low concentration of 50 mg L –1 . Confocal laser scanning microscopy (CLSM) measurement was conducted to reveal the dispersion of Py-TP-BTDO in the photocatalytic solution.…”

Section: Resultssupporting

confidence: 79%

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

et al. 2022

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Organic polymers with conjugated architectures have been widely exploited as photocatalyst materials for hydrogen generation. However, it is still an enormous challenge to develop photocatalysts with high hydrogen generation activity under natural sunlight, which is pretty significant for practical applications. Herein, two conjugated microporous polymer photocatalysts with definite D−π–A structures are designed and prepared using dibenzo[g,p]chrysene or pyrene with planar conjugated architecture as electron donors, thiophene as a π-spacer, and dibenzo[b,d]thiophene-S,S-dioxide as an electron acceptor. Benefiting from the efficient separation of light-generated electrons/holes due to the definite D−π–A structure and the broad light absorption range, the bare polymer Py-TP-BTDO could deliver a high photocatalytic hydrogen evolution rate (HER) of 115.03 mmol h–1 g–1 upon exposure to visible light (λ > 420 nm). Impressively, the outdoor photocatalytic experiment reveals that abundant and continuous hydrogen bubbles could be produced fast and visually observed under natural sunlight by the Py-TP-BTDO polymer film with a large active area of 120 cm2. A water-drainage experiment further demonstrates that 1224 mL of hydrogen gas could be produced by 25 mg of a polymer photocatalyst with 3 wt % Pt cocatalyst under natural sunlight in 7 h, corresponding to a high HER of 312.24 mmol h–1 g–1, which represents the state of the art of organic photocatalyst materials to date. The high photocatalytic activity under natural sunlight suggests the potential of the developed Py-TP-BTDO polymer photocatalyst in the practical applications for photocatalytic hydrogen production.

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Section: Resultssupporting

confidence: 79%

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

et al. 2022

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“…Porous organic polymers (POPs) have rapidly been emerging as very promising adsorbents because of their high physicochemical stability, large specific surface area, low skeleton density and various functionalities, which have been widely applied in industrial sewage treatment, [ 9 ] gas storage, [ 10‐11 ] gas separation, [ 12‐13 ] photocatalysis, [ 14 ] supercapacitors, [ 15‐16 ] hydrogen evolution [ 17 ] and lymphatic targeting imaging. [ 18 ] Due to the stronger Lewis acidity of C 2 H 2 compared with CO 2 and CH 4 , [ 19‐20 ] nitrogen‐rich POPs containing N‐heterocycles, aromatic amines or alkylamines could afford stronger interactions with C 2 H 2 molecules, which dramatically enhanced C 2 H 2 adsorption.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Microporous Nitrogen‐Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C₂H₂ over CH₄^†

et al. 2023

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Comprehensive Summary Acetylene purification from methane is challenging in the field of porous organic polymers (POPs). Herein, we have provided one‐pot Ullmann coupling reaction to synthesize a series of POPs with rich N‐sites, named FJU‐POP‐n, wherein the low‐cost and non‐toxic Cu(acac)2 and environmental‐friendly glycerol are employed as catalyst and solvent, respectively. These POPs constructed by aromatic amine and haloarene monomers exhibit different steric configurations and pore sizes. Among these, FJU‐POP‐4 with abundant N‐functional sites and suitable pore size exhibits ultra‐high selective separation for C2H2/CH4 (307.1, 50 : 50) at ambient conditions, the highest among the reported MOFs and POPs with nitrogen‐sites as only functional species. Dynamic fixed bed breakthrough and regeneration experiments confirm structural stability and reproducibility, indicating their promising application in selective separation.

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“…The pursuit of green environmental protection without affecting the life experience of most consumers, or how to ensure the supply and demand of energy while improving economic effects, is a heavy part of technology today. An increasingly well-known energy storage device to deal with this situation is the supercapacitor (SC), which has been studied since the 19th century [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. SCs were developed for the same purpose as secondary batteries and conventional capacitors.…”

Section: Introductionmentioning

confidence: 99%

Design and Synthesis of Bisulfone-Linked Two-Dimensional Conjugated Microporous Polymers for CO2 Adsorption and Energy Storage

et al. 2023

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We have successfully synthesized two types of two-dimensional conjugated microporous polymers (CMPs), Py-BSU and TBN-BSU CMPs, by using the Sonogashira cross-coupling reaction of BSU-Br2 (2,8-Dibromothianthrene-5,5′,10,10′-Tetraoxide) with Py-T (1,3,6,8-Tetraethynylpyrene) and TBN-T (2,7,10,15-Tetraethynyldibenzo[g,p]chrysene), respectively. We characterized the chemical structure, morphology, physical properties, and potential applications of these materials using various analytical instruments. Both Py-BSU and TBN-BSU CMPs showed high thermal stability with thermal decomposition temperatures (Td10) up to 371 °C and char yields close to 48 wt%, as determined by thermogravimetric analysis (TGA). TBN-BSU CMPs exhibited a higher specific surface area and porosity of 391 m2 g−1 and 0.30 cm3 g−1, respectively, due to their large micropore and mesopore structure. These CMPs with extended π-conjugated frameworks and high surface areas are promising organic electroactive materials that can be used as electrode materials for supercapacitors (SCs) and gas adsorption. Our experimental results demonstrated that the TBN-BSU CMP electrode had better electrochemical characteristics with a longer discharge time course and a specific capacitance of 70 F g−1. Additionally, the electrode exhibited an excellent capacitance retention rate of 99.9% in the 2000-cycle stability test. The CO2 uptake capacity of TBN-BSU CMP and Py-BSU CMP were 1.60 and 1.45 mmol g−1, respectively, at 298 K and 1 bar. These results indicate that the BSU-based CMPs synthesized in this study have potential applications in electrical testing and CO2 capture.

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Conjugated microporous polymers incorporating Thiazolo[5,4-d]thiazole moieties for Sunlight-Driven hydrogen production from water

Cited by 59 publications

References 100 publications

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

Microporous Nitrogen‐Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C₂H₂ over CH₄^†

Design and Synthesis of Bisulfone-Linked Two-Dimensional Conjugated Microporous Polymers for CO2 Adsorption and Energy Storage

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Conjugated microporous polymers incorporating Thiazolo[5,4-d]thiazole moieties for Sunlight-Driven hydrogen production from water

Cited by 59 publications

References 100 publications

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight

Microporous Nitrogen‐Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C2H2 over CH4†

Design and Synthesis of Bisulfone-Linked Two-Dimensional Conjugated Microporous Polymers for CO2 Adsorption and Energy Storage

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Microporous Nitrogen‐Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C₂H₂ over CH₄^†