Magnetically-separable cobalt catalyst embedded in metal nitrate-promoted hierarchically porous N-doped carbon nanospheres for hydrodeoxygenation of lignin-derived species

Yu, Haitao; Xu, Yang; Zhang, Meng; Zhang, Li; Wu, Wenjin; Huang, Kun

doi:10.1016/j.fuel.2022.125917

Cited by 10 publications

(6 citation statements)

References 49 publications

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“…[ 13 ] The peak at 2698 cm −1 (2D peak) represented a thin layer of carbon. [ 14 ] Agreeing well with PXRD patterns, two important changes were also found. The Co‐COP‐CNT‐n carbonized at different temperatures revealed a lower I D / I G ratio than pyrolysis‐free Co‐COP‐CNT.…”

Section: Resultsmentioning

confidence: 61%

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

et al. 2023

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A soft-pyrolysis strategy by heating Co-N-implanted covalent organic polymer combining on carbon nanotubes at ≤500 °C has been developed to obtain efficient Co-N-C electrocatalysts for oxygen reduction reaction (ORR). The prepared Co-N-C is highly active for ORR with a half-wave potential of 0.91 V versus RHE in 0.1 M KOH electrolyte, superior to most of previously reported Co-based electrocatalysts. When employing it as cathode electrocatalyst, the homemade Zn-air battery shows a peak power density of 304.2 mW cm À2 , comparable to the parallel power density (250 mW cm À2 ) of Zn-air battery with Pt/C (20 wt%) electrocatalyst at cathode. The soft-pyrolysis strategy not only helps to generate high density Co-N x active sites on carbons but also facilitates the optimizing balance between active site densities, graphitization degree, and pore structure of Co-N-C catalysts. Herein, a simple and energy-effective low-temperature pyrolysis strategy to obtain high-performance ORR electrocatalyst is provided.

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Section: Resultsmentioning

confidence: 61%

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

et al. 2023

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“…3.4.6. Preparation of (η 5 -Cyclopentadienyl)(1,1 -bis(diphenylphosphino)ferrocene-κ 2 P,P )palladium(II) Tetrafluoroborate, [Pd(η 5 -C 5 H 5 )(dppf)]BF 4 (Dppf = 1,1 -Bis(diphenylphosphino)ferrocene) (6) [Pd(acac)(dppf)]BF 4 (0.300 g, 0.354 mmol) was dissolved in 10 mL of MeOH and BF 3 •OEt 2 (0.22 mL, 1.77 mmol) was added to this solution. The obtained red solution was stirred for 0.25 h at room temperature, and then cooled to 0 • C. Cyclopentadiene (0.15 mL, 1.77 mmol) was added to the resulting reaction mixture and stirred for 8.0 h at room temperature.…”

Section: Preparation Of 2 In Meoh As Solventmentioning

confidence: 99%

“…Furthermore, Cp proved to be a good supporting ligand for catalyst design [4]. Although in most cases, industrial application requires the use of heterogeneous, supported catalysts, homogeneous and metal nanoparticle catalysts [5][6][7], which may present an intermediate option between homogeneous and heterogeneous catalysts, continue to evolve [8]. A famous example of this is metallocene catalysts (with titanium-family metals) that have been applied in the industrial production of α-olefin polymers owing to their single reaction active center and high catalytic activity [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Novel Route to Cationic Palladium(II)–Cyclopentadienyl Complexes Containing Phosphine Ligands and Their Catalytic Activities

et al. 2023

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The Pd(II) complexes [Pd(Cp)(L)n]m[BF4]m were synthesized via the reaction of cationic acetylacetonate complexes with cyclopentadiene in the presence of BF3∙OEt2 (n = 2, m = 1: L = PPh3 (1), P(p-Tol)3, tris(ortho-methoxyphenyl)phosphine (TOMPP), tri-2-furylphosphine, tri-2-thienylphosphine; n = 1, m = 1: L = dppf, dppp (2), dppb (3), 1,5-bis(diphenylphosphino)pentane; n = 1, m = 2 or 3: 1,6-bis(diphenylphosphino)hexane). Complexes 1–3 were characterized using X-ray diffractometry. The inspection of the crystal structures of the complexes enabled the recognition of (Cp–)⋯(Ph-group) and (Cp–)⋯(CH2-group) interactions, which are of C–H…π nature. The presence of these interactions was confirmed theoretically via DFT calculations using QTAIM analysis. The intermolecular interactions in the X-ray structures are non-covalent in origin with an estimated energy of 0.3–1.6 kcal/mol. The cationic palladium catalyst precursors with monophosphines were found to be active catalysts for the telomerization of 1,3-butadiene with methanol (TON up to 2.4∙104 mol 1,3-butadiene per mol Pd with chemoselectivity of 82%). Complex [Pd(Cp)(TOMPP)2]BF4 was found to be an efficient catalyst for the polymerization of phenylacetylene (PA) (catalyst activities up to 8.9 × 103 gPA·(molPd·h)−1 were observed)

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“…Various methods, such as atomic force microscopy (AFM), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray diffraction [17,18], and Fourier transform infrared (FTIR) spectroscopy [19], are known to study the surface characteristics. However, an interesting and innovative method, based on the analysis of an image of the material surface, is the measure of the Haralick's features [20]: a gray-level co-occurrence matrix (GLCM) is extracted from the image and reveals the distribution of co-occurring pixel grayscale values [21].…”

Section: Introductionmentioning

confidence: 99%

Surface Properties of a Biocompatible Thermoplastic Polyurethane and Its Anti-Adhesive Effect against E. coli and S. aureus

Restivo,

Peluso,

Bloise

et al. 2024

JFB

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Thermoplastic polyurethane (TPU) is a polymer used in a variety of fields, including medical applications. Here, we aimed to verify if the brush and bar coater deposition techniques did not alter TPU properties. The topography of the TPU-modified surfaces was studied via AFM demonstrating no significant differences between brush and bar coater-modified surfaces, compared to the un-modified TPU (TPU Film). The effect of the surfaces on planktonic bacteria, evaluated by MTT assay, demonstrated their anti-adhesive effect on E. coli, while the bar coater significantly reduced staphylococcal planktonic adhesion and both bacterial biofilms compared to other samples. Interestingly, Pearson’s R coefficient analysis showed that Ra roughness and Haralick’s correlation feature were trend predictors for planktonic bacterial cells adhesion. The surface adhesion property was evaluated against NIH-3T3 murine fibroblasts by MTT and against human fibrinogen and human platelet-rich plasma by ELISA and LDH assay, respectively. An indirect cytotoxicity experiment against NIH-3T3 confirmed the biocompatibility of the TPUs. Overall, the results indicated that the deposition techniques did not alter the antibacterial and anti-adhesive surface properties of modified TPU compared to un-modified TPU, nor its bio- and hemocompatibility, confirming the suitability of TPU brush and bar coater films in the biomedical and pharmaceutical fields.

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Magnetically-separable cobalt catalyst embedded in metal nitrate-promoted hierarchically porous N-doped carbon nanospheres for hydrodeoxygenation of lignin-derived species

Cited by 10 publications

References 49 publications

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

Novel Route to Cationic Palladium(II)–Cyclopentadienyl Complexes Containing Phosphine Ligands and Their Catalytic Activities

Surface Properties of a Biocompatible Thermoplastic Polyurethane and Its Anti-Adhesive Effect against E. coli and S. aureus

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Magnetically-separable cobalt catalyst embedded in metal nitrate-promoted hierarchically porous N-doped carbon nanospheres for hydrodeoxygenation of lignin-derived species

Cited by 10 publications

References 49 publications

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–Nx Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–Nx Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

Novel Route to Cationic Palladium(II)–Cyclopentadienyl Complexes Containing Phosphine Ligands and Their Catalytic Activities

Surface Properties of a Biocompatible Thermoplastic Polyurethane and Its Anti-Adhesive Effect against E. coli and S. aureus

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Product

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Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries

Soft‐Pyrolysis Co–N‐Implanted Polymer to Gain High‐Density Co–N_x Sites on Carbons for Efficient Oxygen Reduction in Zn–Air Batteries