Well entrapped platinum-iron nanoparticles on three-dimensional nitrogen-doped ordered mesoporous carbon as highly efficient and durable catalyst for oxygen reduction and zinc-air battery

Sun, Ruimin; Wu, Runze; Li, Xinsheng; Feng, Jiu‐Ju; Zhang, Lu; Wang, Ai‐Jun

doi:10.1016/j.jcis.2022.04.043

Cited by 22 publications

(11 citation statements)

References 67 publications

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“…(3) The PtNi NPs showed excellent catalytic properties, owing to the synergic and electronic effects of the bimetals. 49 Conclusions. In summary, the PtNi/NCFs nanozyme was synthesized and applied for building a colorimetric sensor for the TAC tests.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Mao

Zhang

et al. 2023

ACS Appl. Nano Mater.

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A total antioxidant capacity (TAC) assay plays an essential role in evaluating antioxidant behaviors. It mainly involves examining the dosages of antioxidants such as ascorbic acid (AA), while TAC can be measured by nanozyme with peroxidase-like activity. Herein, nitrogen-doped carbon nanoflowers decorated with uniform PtNi nanoparticles (PtNi/NCFs) were fabricated by a simple pyrolysis strategy. The obtained PtNi/NCFs showed high peroxidase-mimicking activity to catalyze 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation by generating rich hydroxyl radicals (·OH) in the H2O2 system. By virtue of the PtNi/NCFs nanozyme, a visual colorimetric sensor was developed for assays of H2O2 and AA. The limits of detection were as low as 45.3 and 0.94 μM for determination of H2O2 and AA with linear ranges of 100–1000 and 1.0–20.0 μM, respectively. Moreover, such sensor was also successfully employed to detect AA and H2O2 in real tablets and juices. The PtNi/NCFs nanozyme holds great potential for practical applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…(2) The unique structure of the PtNi/NCFs boosted the interfacial mass/charge diffusion of the soluble substrates. (3) The PtNi NPs showed excellent catalytic properties, owing to the synergic and electronic effects of the bimetals …”

Section: Resultsmentioning

confidence: 99%

Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Mao

Zhang

et al. 2023

ACS Appl. Nano Mater.

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“…Similarly, the N 1s section is segmented into four independent peaks at 401.47, 401.00, 398.75, and 403.30 eV (Figure 3F), corresponding to graphitic N, pyrrolic N, pyridinic N, and oxidized N, 56 respectively. As certified earlier, graphitic N would enhance the electrical conductivity, 57 while the doped N atoms can effectively modulate the electronic structure of carbon and thereby improve the catalytic activity.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Graphitic Carbon-Coated PtCoNi Alloys Supported on N-Doped Porous Carbon Nanoflakes for Sensitive Detection of Bisphenol A

Zhu

Wang

et al. 2023

ACS Appl. Nano Mater.

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As the raw material of polycarbonate and epoxy resins, bisphenol A (BPA) is widely employed in industrial production of commodities, such as plastic bottles and thermal paper. However, excessive amounts of BPA affect the immune system of the human body and damage the health. It is important to monitor BPA in environmental and industrial samples. Herein, a graphitic carbon-coated PtCoNi alloy supported on N-doped porous carbon nanoflakes (G-PtCoNi/N-PCFs) was successfully prepared by high-temperature pyrolysis. The characteristics (e.g., compositions and microstructure) of the G-PtCoNi/N-PCFs were characterized in detail, coupled by investigating the N-doping effect. Specifically, the well-dispersed PtCoNi alloy enhanced the catalytic activity, combined by inhibiting the poisoning effect of the species absorbed on the surface and improving the utilization of Pt with additional Co/Ni atoms. Moreover, the graphitic carbon shell further enhanced the catalytic stability of BPA. As a desirable electrode material, the G-PtCoNi/N-PCFs composite was applied for building an electrochemical sensor for the detection of BPA. Under optimal conditions, the resultant sensor exhibited outstanding catalytic activity and analytical performance with a wide linear range of 2.0−140.0 μM and a low limit of detection of 0.19 μM (S/N = 3), combined with the feasibility for detecting BPA in thermal paper and plastic bottles.

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“…Recently, extensive efforts have been devoted to constructing porous carbon substrates for ORR, generally providing abundant active sites and mass transfer channels. , Various carbon substrates, such as graphene oxide (GO), − carbon nanotubes (CNTs), − carbon nanofibers (CNFs), and carbon powder, , were explored to promote the activity for ORR due to the high exposure of active centers and enhanced electron transfer. Particularly, hollow carbon nanofibers are highly desirable materials for ORR attributed to their unique structural advantage and high specific surface area, which can afford more active sites and facilitate the contact between the active sites and electrolytes. − However, due to a lack of meticulously designed micropores and interconnected channels, hollow carbon nanofibers cannot provide adequate channels to ensure efficient mass transfer, leading to poor electrochemical performance .…”

Section: Introductionmentioning

confidence: 99%

Hollow Porous Carbon Nanofibers with Fe–N–C Modified by Fe₃O₄ Nanoparticles for Enhancing Mass Transfer for Boosting the Oxygen Reduction Reaction

Yang

Guo

et al. 2023

ACS Sustainable Chem. Eng.

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Designing low-cost and high-efficiency non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) is critical for the development of renewable and sustainable energy devices. It is of essential importance to precisely design and rationally adjust the porous morphology and nanostructure of catalysts to improve mass transfer and the accessibility of active sites. Herein, we elaborately designed a unique hollow hierarchical porous carbon nanofiber with Fe3O4/Fe–N–C sites anchored as a high-efficiency electrocatalyst for ORR. The hollow porous carbon nanofibers (HPCNFs) were prepared via a facile convenient coaxial electrospinning technology to fabricate the hollow carbon nanofibers and through zinc nitrate-assisted pyrolysis to form a hierarchical porous structure. Benefiting from its unique hollow porous construction, facilitated mass transfer, and highly accessible active sites, the optimized Fe-HPCNFs catalyst exhibited significant ORR performance and stability, with a half-wave potential of 0.89 V outperforming the commercial catalyst (20% Pt/C). Remarkably, Zn–air batteries assembled with Fe-HPCNFs achieved excellent activity with a robust peak power density of 172 mW·cm–2 and a high specific capacity of 905.4 mAh·gZn –1. Furthermore, the ORR mechanism was investigated by density functional theory calculations, demonstrating that the synergistic effect of Fe3O4 nanoparticles and Fe–N–C active sites can effectively boost the electrocatalytic activity for ORR.

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Well entrapped platinum-iron nanoparticles on three-dimensional nitrogen-doped ordered mesoporous carbon as highly efficient and durable catalyst for oxygen reduction and zinc-air battery

Cited by 22 publications

References 67 publications

Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Graphitic Carbon-Coated PtCoNi Alloys Supported on N-Doped Porous Carbon Nanoflakes for Sensitive Detection of Bisphenol A

Hollow Porous Carbon Nanofibers with Fe–N–C Modified by Fe₃O₄ Nanoparticles for Enhancing Mass Transfer for Boosting the Oxygen Reduction Reaction

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Well entrapped platinum-iron nanoparticles on three-dimensional nitrogen-doped ordered mesoporous carbon as highly efficient and durable catalyst for oxygen reduction and zinc-air battery

Cited by 22 publications

References 67 publications

Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Nitrogen-Doped Carbon Nanoflowers Decorated with PtNi Nanoparticles for Colorimetric Detection of Total Antioxidant Capacity

Graphitic Carbon-Coated PtCoNi Alloys Supported on N-Doped Porous Carbon Nanoflakes for Sensitive Detection of Bisphenol A

Hollow Porous Carbon Nanofibers with Fe–N–C Modified by Fe3O4 Nanoparticles for Enhancing Mass Transfer for Boosting the Oxygen Reduction Reaction

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Product

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Hollow Porous Carbon Nanofibers with Fe–N–C Modified by Fe₃O₄ Nanoparticles for Enhancing Mass Transfer for Boosting the Oxygen Reduction Reaction