Si<sub>3</sub>N<sub>4</sub>whiskers modified with titanium as stable Pt electrocatalyst supports for methanol oxidation and oxygen reduction

Zhang, Yan; Zang, Jianbing; Cheng, Xiaozhe; Zhang, Xiaochen; Wang, Yanhui

doi:10.1039/c4ta03818e

Cited by 16 publications

(2 citation statements)

References 36 publications

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“…The chelation of dispersed Cu atoms on the NPC was attributed to the strong anchoring effect of Cu−N bonding. The P 2 p spectrum of Cu/NPC (Figure 1f) exhibited the P−Cu signals at around 130 eV, indicating the formation of Cu−P bonds through the in situ thermal phosphorus immitting strategy [24] . In the Cu 2 p spectrum (Figure 1g), the vertical lines at 932.4 and 934.6 eV represented the valence states of Cu 0 and Cu 2+ , respectively.…”

Section: Resultsmentioning

confidence: 99%

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Che,

Li,

Han

et al. 2024

Angew Chem Int Ed

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Crafting single‐atom catalysts (SACs) that possess “just right” modulated electronic and geometric structures, granting accessible active sites for direct room‐temperature benzene oxidation is a coveted objective. However, achieving this goal remains a formidable challenge. Here, we introduce an innovative in‐situ phosphorus‐immitting strategy using a new phosphorus source (phosphorus nitride, P3N5) to construct the phosphorus‐rich copper (Cu) SACs, designated as Cu/NPC. These catalysts feature locally protruding metal sites on a nitrogen (N)‐phosphorus (P)‐carbon (C) support (NPC). Rigorous analyses, including X‐ray absorption spectroscopy (XAS) and X‐ray photoelectron spectroscopy (XPS), validate the coordinated bonding of nitrogen and phosphorus with atomically dispersed Cu sites on NPC. Crucially, systematic first‐principles calculations, coupled with the climbing image nudged‐elastic‐band (CI‐NEB) method, provide a comprehensive understanding of the structure‐property‐activity relationship of the distorted Cu‐N2P2 centers in Cu/NPC for selective oxidation of benzene to phenol production. Interestingly, Cu/NPC has shown more energetically favorable C‐H bond activation compared to the benchmark Cu/NC SACs in the direct oxidation of benzene, resulting in outstanding benzene conversion (50.3%) and phenol selectivity (99.3%) at room temperature. Furthermore, Cu/NPC achieves a remarkable turnover frequency of 263 h−1 and mass‐specific activity of 35.2 mmol g‐1 h‐1, surpassing the state‐of‐the‐art benzene‐to‐phenol conversion catalysts to date.

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Section: Resultsmentioning

confidence: 99%

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Che,

Li,

Han

et al. 2024

Angew Chem Int Ed

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“…Zhang et al coated SiC nanoparticles with metallic Ti to improve the electrical conductivity, and Pt was supported on Ti-Si/C using a microwave-assisted reduction method. 297 The anchoring effect and the strong bonding with the Ti-coated nanoscale SiC promote activity and stability in the ORR compared to Pt/SiC. You et al reported a unique ordered mesoporous carbon (OMC) nanocomposite support with SiC on the surface of carbon frameworks.…”

Section: Sic and Ni 3 Cmentioning

confidence: 99%

Inorganic non-carbon supported Pt catalysts and synergetic effects for oxygen reduction reaction

Sun

Wang

et al. 2023

Energy Environ. Sci.

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Advanced Noncarbon Materials as Catalyst Supports and Non-noble Electrocatalysts for Fuel Cells and Metal–Air Batteries

Zhang

Chen

Zhao

et al. 2021

Electrochem. Energ. Rev.

161

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Si₃N₄whiskers modified with titanium as stable Pt electrocatalyst supports for methanol oxidation and oxygen reduction

Cited by 16 publications

References 36 publications

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Inorganic non-carbon supported Pt catalysts and synergetic effects for oxygen reduction reaction

Advanced Noncarbon Materials as Catalyst Supports and Non-noble Electrocatalysts for Fuel Cells and Metal–Air Batteries

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Si3N4whiskers modified with titanium as stable Pt electrocatalyst supports for methanol oxidation and oxygen reduction

Cited by 16 publications

References 36 publications

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Out‐of‐Plane Single‐Copper‐Site Catalysts for Room‐Temperature Benzene Oxidation

Inorganic non-carbon supported Pt catalysts and synergetic effects for oxygen reduction reaction

Advanced Noncarbon Materials as Catalyst Supports and Non-noble Electrocatalysts for Fuel Cells and Metal–Air Batteries

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Si₃N₄whiskers modified with titanium as stable Pt electrocatalyst supports for methanol oxidation and oxygen reduction