Anisotropic solution growth of 1D/2D N-rich carbon

Li, Zongge; Wang, Chenwei; Kumar, Anuj; Jia, Hongrui; Jia, Yin; Li, Huifang; Bai, Lu; Zhang, Guoxin; Sun, Xiaoming

doi:10.1016/j.apmate.2023.100138

Cited by 4 publications

(2 citation statements)

References 56 publications

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“…Unfortunately, limited availability, high costs, poor stability, and vulnerability to poisoning have constrained the practical use of Pt in commercialization . In recent years, strategies to significantly develop low-platinum or nonplatinum catalysts have become increasingly attractive. − …”

Section: Introductionmentioning

confidence: 99%

Construction of Pd–Te Intermetallic Compounds to Achieve Ultrastable Oxygen Reduction Activity

Guo,

Zheng,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Palladium (Pd)-transition metal alloys have the potential to regulate the intermediate surface adsorption strength in oxygen reduction reactions (ORR), making them a promising substitute for platinum-based catalysts. Nonetheless, prolonged electrochemical cycling can lead to the depletion of transition metals, resulting in structural degradation and poor durability. Herein, the synthesis of alloy catalysts (Pd 25% Te 75% ) containing Pd and the metalloid tellurium (Te) through a one-step reduction method is reported. Characterizations of powder X-ray photoelectron spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy demonstrated both uniform dispersion and strong binding force of elements within the PdTe alloy, along with providing crystallographic details of associated compounds. Based on density functional theory calculations, PdTe had a more negative d-band center than that of pure Pd, which reduces the adsorption capacity between active sites and intermediates in the ORR, and therefore enhances reaction kinetics. The Pd 25% Te 75% exhibited excellent ORR activity, and its onset and half-wave potentials were ∼0.98 and ∼0.90 V, respectively, at 1600 rpm within the O 2 -saturated 1.0 M KOH. Significantly, accelerated durability tests achieved exceptional stability, and half-wave potential just decayed by 4 mV after 30000 consecutive cycles. Moreover, this study aims to promote the preparation of Pd and metalloid alloys for other energy conversion applications.

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Section: Introductionmentioning

confidence: 99%

Construction of Pd–Te Intermetallic Compounds to Achieve Ultrastable Oxygen Reduction Activity

Guo,

Zheng,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…Over the past few decades, many approaches have been explored to mitigate this problem. The elemental doping of carbon films, ,− use of interlayers, , optimization of coating parameters, , and pretreatment of substrates − are some of the techniques used to enhance the adhesion strength of single GLC films. Many studies have reported that dual treatment (nitriding + GLC film deposition) can create a layer with a gradient hardness distribution to support GLC films, which can increase film–substrate bonding, stabilize the low COF of GLC films, improve their wear performance, and enhance the load-bearing capacity and fatigue performance of the workpiece. ,, However, because traditional dual surface treatments need to be performed in multiple steps and facilities, ,, it is difficult to ensure the reproducibility and control the quality of dual coatings.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Growth of High-Performance Graphite-like Carbon Films on a Nitrided Substrate: Experimental Study and First-Principles Calculations

Li,

Sun,

Xie

et al. 2023

ACS Appl. Mater. Interfaces

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This study reports a novel process for the fabrication of highperformance graphite-like carbon (GLC) films on nitrided substrates through successive steps in a plasma nitriding system. Unlike films fabricated via conventional dual treatments (nitriding + film deposition), here-fabricated GLC films were grown on the surface of nitrided steel via a catalytic reaction. A transition zone having a nanocrystalline and amorphous structure was observed at the interface between the nitrided substrate and GLC films, which increased the durability of GLC films because this structure enhanced the adhesion of GLC films on the nitrided substrate, improving resistance to spallation and wear. Experimental study and first-principles calculations showed that the Fe 3 N phase had a stronger catalytic effect on GLC films than the Fe 4 N phase, and GLC films grown on the nitrided layer dominated by Fe 3 N were thicker with stronger adhesion and excellent frictional and wear properties compared with GLC films grown on the nitrided layer dominated by Fe 4 N because of the beneficial structure formed at the interface. This study reports a simple and inexpensive method to fabricate a dual layer containing high-performance GLC films via a catalytic growth and interface matching mechanism.

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Synthesis of high-efficiency phosphatized catalysts by using organophosphorus and biomass for photocatalytic hydrogen peroxide production via oxygen reduction

Lu,

Yue,

Cai

et al. 2024

Applied Catalysis B: Environmental

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Anisotropic solution growth of 1D/2D N-rich carbon

Cited by 4 publications

References 56 publications

Construction of Pd–Te Intermetallic Compounds to Achieve Ultrastable Oxygen Reduction Activity

Construction of Pd–Te Intermetallic Compounds to Achieve Ultrastable Oxygen Reduction Activity

Catalytic Growth of High-Performance Graphite-like Carbon Films on a Nitrided Substrate: Experimental Study and First-Principles Calculations

Synthesis of high-efficiency phosphatized catalysts by using organophosphorus and biomass for photocatalytic hydrogen peroxide production via oxygen reduction

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