Preparation and performance characterization of functionalized boron-based energetic-microcapsules with uniform size

Xue, Kaiping; Li, Huaiyu; Pan, Lun; Li, C.R.; Zhang, Xiangwen; Zou, Ji‐Jun

doi:10.1016/j.cej.2023.143917

Cited by 13 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that the −C═N and −C═N−Ni peaks of 3D-NiSAs/NiNCs-POPs experienced a subtle redshift due to the introduction of Ni n NCs. [22] In order to gain an insight into the coordination environment and chemical state of Ni atoms in the as-prepared catalysts, X-ray photoelectron spectroscopy (XPS) was performed (Figure S10,S11, Supporting Information). The O 1s spectra of the metalized catalysts were split into two configurations containing Ni−O and C−O.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction

Yan,

Dong,

Wang

et al. 2024

Advanced Science

View full text Add to dashboard Cite

Abstract3D porous organic frameworks, which possess the advantages of high surface area and abundant exposed active sites, are considered ideal platforms to accommodate single atoms (SAs) and metal nanoclusters (NCs) in high‐performance catalysts; however, very little research has been conducted in this field. In the present work, a 3D porous organic framework containing Ni1 SAs and Nin NCs is prepared through the metal‐assisted one‐pot polycondensation of tetraaldehyde and hexaaminotriptycene. The single metal sites and metal clusters confined in the 3D space created a favorable micro‐environment that facilitated the activation of chemically inert CO2 molecules, thus promoting the overall photoconversion efficiency and selectivity of CO2 reduction. The 3D‐NiSAs/NiNCs‐POPs, as a CO2 photoreduction catalyst, demonstrated an exceptional CO production rate of 6.24 mmol g−1 h−1, high selectivity of 98%, and excellent stability. The theoretical calculations uncovered that asymmetrical interaction between Ni1 SAs and Nin NCs not only favored the bending of CO2 molecules and reducing the CO2 reduction energy, but also regulated the electronic structure of the catalyst leading to the optimal binding strength of intermediates.

show abstract

Section: Resultsmentioning

confidence: 99%

“…It was found that the −C═N and −C═N−Ni peaks of 3D‐NiSAs/NiNCs‐POPs experienced a subtle redshift due to the introduction of Ni n NCs. [ 22 ]…”

Section: Resultsmentioning

confidence: 99%

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction

Yan,

Dong,

Wang

et al. 2024

Advanced Science

View full text Add to dashboard Cite

show abstract

“…Boron chemistry has rapidly developed in the last few decades, including research on elemental boron and boron-based organometallic structure [ 28 , 29 , 30 , 31 , 32 ]. Thus, detailed studies on metal–boron interactions are desired.…”

Section: Introductionmentioning

confidence: 99%

Insights into ThB40: Stability, Electronic Structure, and Interaction

Li,

Wang,

Zhou

et al. 2024

Molecules

View full text Add to dashboard Cite

The interaction between nonmetal and metal atoms has attracted great interest in the development of organometallic compounds and their promising applications. In this study, we explored the interaction between boron and thorium atoms, based on the stable B40Th coordination compound, by employing density functional theory calculations. We elucidated the stability and geometries of the B40Th coordination compound and revealed the electron transfer from the metal atom Th to B40, which is evidenced by the natural bond orbital calculations. This electron transfer is attributed to the electron-withdrawing character of the boron atom and results in clear electrostatic interaction. Additionally, bond critical analysis and bond order calculations show obvious covalent characters between the metal and nonmetal atoms. The IR spectrum was simulated to give detailed information to identify this targeted compound in future experiments. This study is expected to enhance the understanding of metal–nonmetal interactions and provides useful information for constructing new organometallic compounds based on actinium metal atoms.

show abstract

Preparation and characteristics of boron‐based composite micro‐units encapsulated by potassium perchlorate

Qin,

Liu,

Zeng

et al. 2024

Propellants Explo Pyrotec

View full text Add to dashboard Cite

To improve the ignition and combustion performance of boron (B), the B@ potassium perchlorate (KP) composite micro‐units are successfully prepared by recrystallization of solvent evaporation. The morphology and structural composition show that B@KP composite micro‐units are formed by the gentle recrystallization of KP at the heterogeneous interface between B particles and solvents. It is shown by thermal analysis that the initial thermal decomposition temperature of KP is reduced by 49 °C due to the reduction of particle size. In addition, the heat of 420 J/g released by the thermal decomposition of KP is beneficial to the evaporation of the oxide boron (B2O3) film on the surface of B, which reduces the initial oxidation temperature of B by 185 °C and improves the ignition performance of B. Interestingly, the oxygen (O2) released by the thermal decomposition of KP quickly reacts with B to release heat of 3608 J/g, which improves the combustion performance of B. The optimal mass ratio of B to KP is 1: 5, which results in the ignition delay time of 641 ms, a reduction of 19 ms compared to the physical mixed sample. The ignition delay times of other samples are 724 ms, 680 ms and 650 ms respectively, and B could not be ignited successfully. In the combustion process, all samples emit a bright green flame of B combustion, and even a fierce combustion flame like a mushroom cloud appears. In a word, the B@KP composite micro‐units have great potential for application in solid propellants.

show abstract

Preparation and performance characterization of functionalized boron-based energetic-microcapsules with uniform size

Cited by 13 publications

References 56 publications

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction

Insights into ThB40: Stability, Electronic Structure, and Interaction

Preparation and characteristics of boron‐based composite micro‐units encapsulated by potassium perchlorate

Contact Info

Product

Resources

About

Preparation and performance characterization of functionalized boron-based energetic-microcapsules with uniform size

Cited by 13 publications

References 56 publications

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO2 Photoreduction

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO2 Photoreduction

Insights into ThB40: Stability, Electronic Structure, and Interaction

Preparation and characteristics of boron‐based composite micro‐units encapsulated by potassium perchlorate

Contact Info

Product

Resources

About

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction

Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO₂ Photoreduction