Highly dispersed boron-nitride/CuO -supported Au nanoparticles for catalytic CO oxidation at low temperatures

Wu, Fan; He, Lei; Li, Wen‐Cui; Rao, Lu; Wang, Yang; Lu, An‐Hui

doi:10.1016/s1872-2067(20)63669-5

Cited by 14 publications

(12 citation statements)

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“…[28] The chemical structure of the prepared nanofiber catalysts before and after calcination was investigated by FT-IR spectroscopy (Figure 3a). The band observed at 3412 cm À 1 for the uncalcined nanofiber catalyst was attributed to the stretching vibrations of SiÀ OH [32] or BÀ OH [33] bond, and band at 1210 cm À 1 was ascribed to the stretching vibration of BÀ O bond. [10] Due to the interference of the stretching vibrations of SiÀ OH group, it was difficult to confirm the BÀ OH in the nanofiber catalyst.…”

Section: Design and Structure Characterization Of H-bn/sio 2 Nanofibersmentioning

confidence: 97%

“…[10] Due to the interference of the stretching vibrations of SiÀ OH group, it was difficult to confirm the BÀ OH in the nanofiber catalyst. However, the presence of BÀ OH [33] (3394 cm À 1 ) was observed for the exfoliated h-BN by ball-milling (Figure 3b). According to the above experimental results, we speculated that the existence of BÀ OH species over the h-BN/SiO 2 nanofiber catalyst.…”

Section: Design and Structure Characterization Of H-bn/sio 2 Nanofibersmentioning

confidence: 98%

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Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

et al. 2021

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Fibrous nanomaterials have drawn considerable attention in the field of catalysis due to the promoted utilization of the surface and facilitated mass transfer process. In this study, we prepared one-dimensional nanofiber catalysts consisting of hexagonal boron nitride/silica oxide (h-BN/SiO 2 ) via electrospinning method. The key is to prepare uniform sols consisting of exfoliated h-BN. The diameters of the nanofiber catalysts can be tuned in the range of 150-300 nm through h-BN loading change. When used in oxidative dehydrogenation of propane (ODHP), the obtained nanofibrous catalysts exhibited a 12.4 % conversion of propane and 85.1 % selectivity towards propylene, with remarkable olefins productivity of 24.9 g olefins • g BN À 1 • h À 1 , which is more than 5 times higher than that of bulk ODHP catalysts reported to date. This study shines light on the specific one-dimensional fibrous structure containing dispersed h-BN as well as a new strategy of preparing more efficient boron-based catalysts in the ODHP process.

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Section: Design and Structure Characterization Of H-bn/sio 2 Nanofibersmentioning

confidence: 97%

Section: Design and Structure Characterization Of H-bn/sio 2 Nanofibersmentioning

confidence: 98%

Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

et al. 2021

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“…The h ‐BN was processed by planetary ball‐milling (Pulverisette 7, Fritsch) at 800 r/min for 15 min at room temperature and then washed for 2 h with deionized water at 80 o C. [ 34‐35 ] Subsequently, the wet sample was suction‐filtered and dried in an oven at 50 o C for 12 h. In this way, the obtained sample was named BN.…”

Section: Methodsmentioning

confidence: 99%

A Highly Selective Metal‐Free Boron‐Based Catalyst for Oxidative Dehydrogenation of Ethylbenzene

Wang

Sheng

et al. 2021

Chin. J. Chem.

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Main observation and conclusion Oxidative dehydrogenation of ethylbenzene is considered as an alternative route to styrene because of its exothermic and irreversible reaction nature, but encounters low styrene selectivity due to the deep‐oxidation over metal oxide‐based catalysts. Herein, we reported that a metal‐free boron‐based catalyst consisting of boron phosphate and boron nitride (BPO4/BN) exhibited high activity and selectivity in oxidative dehydrogenation of ethylbenzene to styrene. High selectivity of styrene (95.1%) was achieved at 27.7% ethylbenzene conversion level over the optimized BPO4/BN catalyst. The tetra‐coordinated boron (BO4) species of BPO4 was speculated to be responsible for the ODH of ethylbenzene, and a synergistic effect between BPO4 and BN can remarkably improve the catalytic performance of the BPO4/BN catalyst. The optimized BPO4/BN catalyst showed a higher styrene formation rate of 4.0 mmol gcat−1·h−1, compared individually to BPO4 (2.8 mmol·gcat–1·h–1) and BN (0.5 mmol·gcat–1·h–1).

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“…that give BN the potential to be used in many applications. In recent years, BN has demonstrated its great potential in optics (optoelectronic devices and detectors), − electrochemistry (electrochemical sensor platforms and biocompatibility), − catalysis, − and detection (temperature sensing, gas sensing, and humidity sensing). − …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Two-Dimensional Hexagonal Boron Nitride and Mid-Infrared Nanophotonics

Shi

Gao

et al. 2022

ACS Appl. Electron. Mater.

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Two-dimensional hexagonal boron nitride (2D h-BN), a representative of 2D layered materials with unique structure and properties, is one of the most promising inorganic nanomaterials in recent years. The excellent properties of h-BN in the mid-infrared (MIR) region (∼2–20 μm) have also received much attention. At the same time, with the advancement of materials exploration and device-on-chip integrated systems, the synthesis of high-quality h-BN has encountered great challenges, which is a prerequisite for the application of h-BN in the MIR region. In this paper, we first review the recent advances in 2D h-BN synthesis by highlighting the research, advantages and disadvantages of various synthesis methods, and the critical issues encountered so far. Then, advances in the study and application of h-BN in the MIR region are explored, including perfect absorption, photodetectors, electro-optical modulators, phonon polaritons, and plasma excitons. Finally, we present our views on the challenges encountered in the synthesis and application of 2D h-BN in the MIR region in the near future in the context of the article’s discussion and the potential of h-BN development, with the hope this review will be of some help to relevant researchers.

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Highly dispersed boron-nitride/CuO -supported Au nanoparticles for catalytic CO oxidation at low temperatures

Cited by 14 publications

References 40 publications

Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

A Highly Selective Metal‐Free Boron‐Based Catalyst for Oxidative Dehydrogenation of Ethylbenzene

Synthesis of Two-Dimensional Hexagonal Boron Nitride and Mid-Infrared Nanophotonics

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Highly dispersed boron-nitride/CuO -supported Au nanoparticles for catalytic CO oxidation at low temperatures

Cited by 14 publications

References 40 publications

Fabrication of h‐BN/SiO2 Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

Fabrication of h‐BN/SiO2 Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

A Highly Selective Metal‐Free Boron‐Based Catalyst for Oxidative Dehydrogenation of Ethylbenzene

Synthesis of Two-Dimensional Hexagonal Boron Nitride and Mid-Infrared Nanophotonics

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Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane

Fabrication of h‐BN/SiO₂ Nanofibers Showing High Olefins Productivity in Oxidative Dehydrogenation of Propane