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Chemical Structure| 25014-41-9 Chemical Structure| 25014-41-9

Structure of Polyacrylonitrile
CAS No.: 25014-41-9

Chemical Structure| 25014-41-9

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Kaczmarzyk, Iwona ; Szopińska, Malgorzata ; Sokołowski, Patryk ; Sabbatini, Simona ; Strugala, Gabriel ; Ryl, Jacek , et al.

Abstract: This study proposes a novel and sustainable method for fabricating 3D-printed carbon-based electrodes for electrochemical wastewater treatment. We prepared B,N-doped carbon electrodes with hierarchical porosity and a signifcantly enhanced surface area-to-volume ratio (up to 180%) compared to non-optimized analogues using a synergistic combination of 3D printing, phase inversion, and microwave plasma-enhanced chemical vapor deposition. This process allows the metal-free growth of vertically aligned carbon nanostructures directly onto polymer-derived substrates, resulting in a 20-fold increase in the electrochemically active surface area. Computational fuid dynamics simulations were used to improve mass transport and reduce pressure drop. Electrochemical characterization demonstrated that the optimized electrodes performed signifcantly better, achieving 4.7-, 4-, and 6.5-fold increases in the degradation rates of atenolol, metoprolol, and propranolol, respectively, during electrochemical oxidation. These results highlight the efcacy of the integrated fabrication and simulation approach in producing high-performance electrodes for sustainable wastewater treatment applications.

Keywords: Carbon nanowall ; Phase inversion ; Microwave plasma-enhanced chemical vapor deposition ; Electrochemical oxidation ; Additive manufacturing

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Shuvo Brahma ; Aidan Gustafson ; Junaid ur Rehman ; Nicholas R. Lontkowski ; Alyssa Libonati ; Marcus Goss , et al.

Abstract: This study investigates the preparation of polyacrylonitrile (PAN) nanofibers through electrospinning to create highly porous and strong materials for applications in water purification, electrocatalysis, and biomedicine. The uniformly white PAN nanofiber mats were cut into 2 cm x 2 cm coupons to ensure consistency. After electrospinning, these nanofibers were coated with an electroactive polymer (EAP) using chemical vapor deposition, with iron (III) chloride (FeCl3) serving as an oxidant for polymerizing 3,4-ethylenedioxythiophene (EDOT) into poly(3,4-ethylenedioxythiophene) (PEDOT). The study examined the impact of different FeCl3 concentrations on PEDOT deposition on the PAN coupons. PEDOT deposition led to an increase in coupon weight. Scanning electron microscopy (SEM) revealed increases in the diameter of the nanofibers treated with increasing FeCl3 oxidant concentration, although higher FeCl3 concentrations caused inter-fiber bridging, implying a concomitant decrease in inter-fiber spacing. Energy dispersive X-ray spectroscopy (EDS) was used to confirm the presence of Fe, Cl, and S in the nanofibers, with sulfur content rising with FeCl3 concentration used, suggesting increased PEDOT deposition efficiency with increasing oxidant concentration. Mechanical testing showed that PEDOT-coated PAN fibers had improved tensile strength and toughness in the hydrated state compared to pure PAN nanofibers. These results highlight the crucial role of FeCl3 concentration in influencing the morphology and properties of PAN-PEDOT composites, enhancing their suitability for applications such as water purification, tissue engineering, biosensing, catalysis, and energy storage.

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Product Details of [ 25014-41-9 ]

CAS No. :25014-41-9
Formula : (C3H3N)x
SMILES Code : NONE
MDL No. :MFCD00084395
InChI Key :NLHHRLWOUZZQLW-UHFFFAOYSA-N
Pubchem ID :7855

Safety of [ 25014-41-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338
 

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