Experimental synthesis, functionalized modifications and potential applications of monoelemental zero-dimensional boron nanomaterials

Yang, Meng; Jin, Hui; Sun, Zejun; Gui, Rijun

doi:10.1039/d1ta10132c

Cited by 27 publications

(18 citation statements)

References 180 publications

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“…Boron has shown high promise as a fuel additive for propulsion and energetic applications due to its high gravimetric (58 kJ/g) and volumetric (140 kJ/mL) enthalpies of oxidation. − Its ignition performance, however, is hindered by the presence of a native oxide on the surface, which melts at relatively low temperatures (450 °C at atmospheric pressure). − The melting of the oxide shell before the solid core clogs the pores leads to particle agglomeration and acts as a diffusion barrier to the incoming oxidizer, thus delaying the boron (B) oxidation. , Attempts to overcome these limitations include surface functionalization of B by organic compounds, − reduction of the oxide, followed by surface passivation using nonthermal plasma processing, and coating with metals to form composites and metal borides by ball milling and high-temperature sintering methods. − Functionalization with organic compounds results in the reduction of the amount of energy released per unit mass due to the presence of less energetic materials on the B surface. Nonthermal plasma processing has been shown to be successful in enhancing the energetic performance over untreated boron but requires low-pressure equipment that is harder to scale-up.…”

Section: Introductionmentioning

confidence: 99%

Nanoenergetic Materials: Enhanced Energy Release from Boron by Aluminum Nanoparticle Addition

Agarwal

Matsoukas

2022

ACS Omega

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Boron has the highest enthalpy of oxidation per unit mass (and volume) among metals and metalloids and is an excellent candidate as a solid fuel. However, the native oxide present on the surface limits the available energy and rate of its release during oxidation. Here, we report a simple and effective method that removes the oxide in situ during oxidation via an exothermic thermite reaction with aluminum that enriches the particle in B at the expense of Al. B/Al blends with different compositions are optimized using thermogravimetry and differential scanning calorimetry, and the best sample in terms of energy release is characterized by high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, energy-dispersive spectroscopy, and X-ray diffraction. All compositions release more energy than the individual components, and the blend containing 10% Al by weight outperforms pure B by 40%. The high energy release is due to the synergistic effect of B oxidation and thermite reaction between Al and B 2 O 3 . We demonstrate the formation of ternary oxide by the oxidation of the B/Al blend that provides porous channels for the oxidation of B, thereby maximizing the contact of the metal and oxidizer. Overall, the results demonstrate the potential of using B/Al blends to improve the energetic performance of B.

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Section: Introductionmentioning

confidence: 99%

Nanoenergetic Materials: Enhanced Energy Release from Boron by Aluminum Nanoparticle Addition

Agarwal

Matsoukas

2022

ACS Omega

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“…After experimental realization of 0D boron, scientists expanded borophene studies from the 2D planar scale to the 0D particle scale, such as boron nanoclusters, nanodots, nanoparticles (BNPs), and quantum dots (BQDs). − As an emerging 0D monoelemental nanomaterial, 0D boron has been theoretically predicted to exhibit excellent properties and functions. In recent years, 0D boron has been realized experimentally and functionally modified toward promising applications, including biomedicine, imaging, sensing, adsorption, and optoelectronics. − …”

Section: Introductionmentioning

confidence: 99%

“…23−32 In one of the latest reviews, we summarized major synthesis details, properties, and potential applications of various monoelemental 0D boron nanomaterials. 32 Particularly, previous experimental studies rarely involved fluorescence (FL) of 0D boron for sensing and imaging, except for BNPs for O 2 sensing and cell imaging. 33 Previous studies reported the FL emission behaviors of BQDs, 22 crystalline borophene quantum dots, 20 and boron nanospheres as derivatives of BQDs 34 but did not further involve FL sensing and imaging.…”

Section: ■ Introductionmentioning

confidence: 99%

Metal-Doped Boron Quantum Dots for Versatile Detection of Lactate and Fluorescence Bioimaging

Yang

Jin

Gui

2022

ACS Appl. Mater. Interfaces

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To improve the stability and fluorescence (FL) of monoelemental boron nanomaterials, this work put forward a metal-coordination strategy to explore emerging metal-doped boron quantum dots, Co@BQDs. Through theoretical calculations, B−Co bonding as predicted can suppress the B−O reaction and protect the electronic structures of exfoliated twodimensional (2D) boron from oxidation and decomposition upon exposure to oxygen. In experimental studies, Co 2+ was added into a dispersion liquid of bulk boron and subjected to probe sonication to promote Co 2+ adsorption on the surface of exfoliated 2D boron, followed by Co 2+ coordination with exposed boron atoms. Solvothermal treatment of exfoliated 2D boron resulted in the generation of Co 2+ -doped 0D boron Co@BQDs. Experimental results confirm that Co@BQDs have higher colloidal and FL stability than BQDs as a reference. B−Co bonding formation to suppress the B−O reaction ensures the high stability of exfoliated boron structures. A dispersion liquid of Co@BQDs with stable and bright FL was used for visual FL imaging of solutions and solid substrates. Based on enzymatic and cascade oxidation-induced FL quenching of Co@BQDs, a novel FL bio-probe of lactate was explored. This bio-probe, with a broad detection range of 0.01−10 mM and a low detection limit of 3.1 μM, enables FL sensing of lactate in biosamples and shows high detection recoveries of 98.0−102.8%. Moreover, this bio-probe realized versatile FL imaging and visual detection of lactate in liquid/solid-phase systems. These results demonstrate great prospects of Co@BQDs as emerging and efficient imaging reagents for long-term tracking and bioimaging applications.

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“…In general, 0D materials exhibit stronger edge effects and unique catalytic properties due to the extraordinary size. The rich unsaturated edge sites and improved charge transfer dynamics make 0D materials promising for PIHC devices 41‐45 . However, there are few works on 0D PIHC electrode materials, which are waiting to be explored by scholars.…”

Section: Introductionmentioning

confidence: 99%

“…The rich unsaturated edge sites and improved charge transfer dynamics make 0D materials promising for PIHC devices. [41][42][43][44][45] However, there are few works on 0D PIHC electrode materials, which are waiting to be explored by scholars.…”

Section: Introductionmentioning

confidence: 99%

Dimensional engineering of anode materials for high performance potassium ion hybrid capacitor—A review

Qian

Wang

Sun

et al. 2022

Intl J of Energy Research

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Summary Potassium‐ion hybrid capacitors (PIHCs) have received extensive attention due to the high‐rate energy density and long‐life cycling capability. However, PIHCs still suffer from structural instability and low power density. Outstanding dimensional engineering can solve the above problems to improve the performance of PIHC anode materials. Here, we systematically summarize the new strategies of preparing dimensionally‐oriented materials for high performance PIHCs anode. To realize the influence of dimensions on high performance PIHC anode materials, we summarize the mechanisms in PIHC anode from one‐dimension, two‐dimension, and three‐dimension, and analyze the problems encountered in improving the performance of PIHC anode materials of different dimensions. Then we make appropriate recommendations on the issues raised, and present future opportunities and challenges for PIHCs. This work can open up new perspectives for developing high performance PIHCs.

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Experimental synthesis, functionalized modifications and potential applications of monoelemental zero-dimensional boron nanomaterials

Abstract: The past decade has witnessed a rapid growth in scientific studies on zero-dimensional (0D) boron nanomaterials, mainly involving boron nanoparticles, boron quantum dots, boron nanodots, boron nanoclusters and functionalized 0D...

Cited by 27 publications

References 180 publications

Nanoenergetic Materials: Enhanced Energy Release from Boron by Aluminum Nanoparticle Addition

Nanoenergetic Materials: Enhanced Energy Release from Boron by Aluminum Nanoparticle Addition

Metal-Doped Boron Quantum Dots for Versatile Detection of Lactate and Fluorescence Bioimaging

Dimensional engineering of anode materials for high performance potassium ion hybrid capacitor—A review

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