Mechanically activated self-propagated high-temperature synthesis of nanometer-structured MgB2

Radev, D.; Marinov, M.; Tumbalev, V.; Radev, Ivan; Konstantinov, L.

doi:10.1016/j.physc.2004.11.016

Cited by 8 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, MB NPs were synthesized using improved Self-propagating high-temperature synthesis as previously reported by our group 36 . The SHS process utilizes the exothermic heat of the reaction to synthesize materials, and its spontaneous-sustaining, fast-propagating nature endows this technique with the ability for the large-scale synthesis of MB NPs 49 , 50 . In addition, we can change the reaction conditions, such as gas atmosphere, or heating/cooling rate 51 , to realize the crystallization of synthetic materials in nanoscale.…”

Section: Discussionmentioning

confidence: 99%

Reactive metal boride nanoparticles trap lipopolysaccharide and peptidoglycan for bacteria-infected wound healing

Meng

Chen

et al. 2022

Nat Commun

View full text Add to dashboard Cite

Bacteria and excessive inflammation are two main factors causing non-healing wounds. However, current studies have mainly focused on the inhibition of bacteria survival for wound healing while ignoring the excessive inflammation induced by dead bacteria-released lipopolysaccharide (LPS) or peptidoglycan (PGN). Herein, a boron-trapping strategy has been proposed to prevent both infection and excessive inflammation by synthesizing a class of reactive metal boride nanoparticles (MB NPs). Our results show that the MB NPs are gradually hydrolyzed to generate boron dihydroxy groups and metal cations while generating a local alkaline microenvironment. This microenvironment greatly enhances boron dihydroxy groups to trap LPS or PGN through an esterification reaction, which not only enhances metal cation-induced bacterial death but also inhibits dead bacteria-induced excessive inflammation both in vitro and in vivo, finally accelerating wound healing. Taken together, this boron-trapping strategy provides an approach to the treatment of bacterial infection and the accompanying inflammation.

show abstract

Section: Discussionmentioning

confidence: 99%

Reactive metal boride nanoparticles trap lipopolysaccharide and peptidoglycan for bacteria-infected wound healing

Meng

Chen

et al. 2022

Nat Commun

View full text Add to dashboard Cite

show abstract

“…High-energy ball milling is an effective means for producing large quantities of nanoparticles by using mechanical energy to fracture, crush, or abrade feedstock, such as a powder of interest. − The resulting size distribution is determined by the balance between processes like fracturing or crack propagation, which tend to reduce size, and cold-welding processes that lead to aggregation or fusion. For ductile or malleable metals, the balance does not favor nanoparticle production, − unless a strongly adsorbing milling agent is used to enhance size reduction.…”

Section: Introductionmentioning

confidence: 99%

Aluminum Nanoparticle Production by Acetonitrile-Assisted Milling: Effects of Liquid- vs Vapor-Phase Milling and of Milling Method on Particle Size and Surface Chemistry

McMahon

Boatz

et al. 2016

J. Phys. Chem. C

View full text Add to dashboard Cite

Milling aluminum balls together with either vapor- or liquid-phase acetonitrile (ACN) leads to production of nanoparticles by mechanical attrition; however, vapor-phase ACN is far more efficient at inducing size reduction, leading to more, smaller, and more uniform particles. The attrition process is also more efficient than traditional milling of particulate starting material and produces nanoparticles with substantially lower contamination levels. This paper is aimed at better understanding the nature of the size reduction process, the chemistry driving it, and the particles it produces. Mass spectrometry was used to probe gases generated during milling, and a combination of X-ray photoelectron spectroscopy, infrared spectroscopy, dynamic light scattering, helium ion microscopy, scanning electron microscopy, and thermogravimetric analysis/mass spectrometry was used to probe the particles and their surface layer. To provide further insight into the chemistry occurring between ACN and aluminum under milling conditions, high-level ab initio theory was used to calculate the structures and energetics for binding and reactions of ACN and its fragments at different sites on an Al80 model surface.

show abstract

Mechanochemical activation of aluminum powder and synthesis of alumina based ceramic composites

Barseghyan

Sakka

2013

Ceramics International

View full text Add to dashboard Cite

Mechanically activated self-propagated high-temperature synthesis of nanometer-structured MgB2

Cited by 8 publications

References 23 publications

Reactive metal boride nanoparticles trap lipopolysaccharide and peptidoglycan for bacteria-infected wound healing

Reactive metal boride nanoparticles trap lipopolysaccharide and peptidoglycan for bacteria-infected wound healing

Aluminum Nanoparticle Production by Acetonitrile-Assisted Milling: Effects of Liquid- vs Vapor-Phase Milling and of Milling Method on Particle Size and Surface Chemistry

Mechanochemical activation of aluminum powder and synthesis of alumina based ceramic composites

Contact Info

Product

Resources

About