Insights into the Solution Processing of Non-van der Waals Boron Carbide

被引：0

作者：

Sahoo, Priyabrata ^{[1
,2
]}

Lobo, Kenneth ^{[1
]}

Gangaiah, Vijaya Kumar ^{[1
]}

Sumbe, Priyanka ^{[3
]}

More, Mahendra A. ^{[3
]}

Late, Dattatray J. ^{[4
]}

Vankayala, Kiran ^{[5
]}

Matte, H. S. S. Ramakrishna ^{[1
]}

机构：

[1] Ctr Nano & Soft Matter Sci, Energy Mat Lab, Bengaluru 562162, India

[2] Manipal Acad Higher Educ, Manipal 576104, India

[3] Savitribai Phule Pune Univ, Dept Phys, Ganeshkhind Rd, Pune 411007, India

[4] Univ Fed Lavras, Dept Fis, BR-37200000 Lavras, MG, Brazil

[5] Birla Inst Technol & Sci, Energy & Environm Chem Lab, Dept Chem, Funct Mat Electrochem & Solar Energy FunMatES Grp, Pilani 403726, Goa, India

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2025年 / 31卷 / 03期

关键词：

Non-layered materials; Liquid phase exfoliation; Hansen solubility parameters; Dispersion stability; Field emission; LIQUID-PHASE EXFOLIATION; HANSEN SOLUBILITY PARAMETERS; DISPERSION STABILITY; FIELD-EMISSION; GRAPHENE OXIDE; 2D NANOSHEETS; SIMULATIONS; FABRICATION; COMPOSITES; DESIGN;

D O I：

10.1002/chem.202403328

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Exfoliation of non-layered materials is crucial to unleash their enormous potential in wide range of applications. However, the presence of strong non-van der Waals interactions in all three dimensions makes exfoliation challenging. Boron carbide (B4C), known for its high hardness, holds great potential for diverse applications. In this work, B4C is exfoliated in 29 solvents to determine its Hansen solubility parameters (HSP) and understand the dispersion stability. The experimentally determined HSP values are 19.6, 15.3 and 15.1 MPa1/2 for dispersive interactions (delta(D)), polar interactions (delta(P)) and hydrogen bonding interactions (delta(H)), respectively. Subsequently, in situ dispersion stability is analyzed qualitatively and quantitatively from the space-time resolved extinction profiles employing an analytical centrifuge. The sedimentation kinetics of B4C dispersions are analyzed using instability index, integral extinction and sedimentation velocity. B4C dispersions in solvents like epsilon-caprolactone, isopropyl alcohol, propylene carbonate and formamide exhibited excellent stability. Additionally, B4C nanosheets are utilized to investigate their field emission properties. These nanosheets exhibit a turn-on electric field of 3.35 V/mu m at an emission current density of 1 mu A cm(-2), and it delivered a large emission current density of similar to 375 mu A cm(-2) at an applied electric field of 5.7 V/mu m.

引用

页数：10