Boron Nanoparticles Dispersion (B, Diameter: 80-100nm, Purity: 99.9%)

Typical Properties
CAS	7440-42-8
Catalog	ACM7440428-22
Molecular Weight	13.83480 g/mol
Boiling Point	3650 °C
Melting Point	2180 °C
Purity	99.9 %
Density	2.34 g/mL at 25 °C (lit.)
Appearance	Liquid
Storage	2-8 °C
Color	Black
Composition	B
Concentration	2 % in NMP/Water
Diameter	80-100 nm
Precautions for use	This product is inert gas anti-static packaging, it should be sealed and stored in a dry and cool environment.
Quality Level	200
Shipping	Ambient Temperature
Solvent	NMP/Water

Overview

Description

Nano-element boron, the appearance is dark brown liquid, its melting point is 2400℃, and its boiling point is about 2700℃. The specific gravity is ≥1.3 (the specific gravity of amorphous boron is 1.3, the specific gravity of shaped boron is 2.4), the Mohs hardness is 9, and it can react with most metals to form borides at high temperatures.

Features

·Evenly dispersed, small particles
·Good compatibility, easy to disperse, easy to add a variety of systems
·Good system stability, reliable performance, safety and environmental protection
·High specific surface area, high loading, easy surface functionalization

Application

·Protective materials for the atomic energy industry
·Catalyst for porcelain industry and organic synthesis, high-energy fuel for rocket propulsion.
·Raw materials for the manufacture of borane and various borides
·For the smelting of special alloy steel
·Semiconductors

Case Study

Synthesis of Silane-Terminated Boron Nanoparticles and Their Fuel Applications

Meijie Du, et al. Fuel, 2017, 194, 75-82.

A silane-terminated boron nanoparticle was successfully synthesized by surface modification of boron nanoparticles (NPs) with silane (C16H33Si(OH)3). The silane-terminated boron NPs can be uniformly and stably dispersed in decalin fuel, which can effectively increase the energy content of liquid fuel. It was proposed that B-O-Si bond was formed in silane-capped boron NPs via condensation reaction of -OH groups on the surface of the boron particles with C16H33Si(OH)3 molecules.
Synthetic procedure for silane-terminated boron NPs
· 1.0 g of as-received boron NPs was added to 30 mL of a methanol-water mixture (2:1, v/v) in a flask. After ultrasonic stirring for 5 min, the suspension was heated to 70 °C and hydrolyzed hexadecyltrimethoxysilane (HTMS) was added dropwise.
· After hydrolyzed HTMS was completely added, the suspension was stirred for additional 30-120 min. When the reaction is complete, silane-capped boron NPs were normally settled at the bottom of the flask, leaving a clear solvent phase on the top.
· After the removal of the supernatant, silane-capped boron NPs were washed with decalin to remove any silanes that are physically adsorbed on the particle surface.
· After washing, silane-capped boron NPs were transferred to a culture dish and dried overnight in an air oven at 60 °C.

Synthesis and Biomedical Applications of Nontoxic Water-Dispersible Boron Nanoparticles

Andrei I. Pastukhov, et al. Scientific Reports, 2022, 12(1), 9129.

Boron nanoparticles (NPs) were synthesized by femtosecond laser ablation in deionized water. Colloidal NPs solutions prepared by laser ablation were stable due to electrostatic stabilization from NPs charging. The boron NPs have potential applications as phototherapy sensitizers, photoacoustic imaging contrast agents, and boron neutron capture therapy (BNCT).
Synthesis of Boron NPs
· The synthesis of boron nanoparticles was achieved through the process of laser ablation. This involved directing a beam from a Yb:KGW laser onto the surface of a boron target, which was contained in a quartz cuvette filled with either deionized water or water bubbled with argon gas to remove dissolved oxygen. The energy of the laser beam was adjusted to 350 µJ per pulse using a half-wave plate and Bruster polarizer.
· The thickness of the liquid layer between the inner wall of the cuvette and the target surface was measured at 3.3 mm. To prevent damage to the glass wall of the cuvette and ensure proper focusing of the laser beam on the target surface, the cuvette was continually moved forward in the direction of the convex lens.
· Additionally, to avoid ablation from the same region, the cuvette with the target was continuously translated using a stage, with a scan area of 7 × 7 mm and a displacement speed of 2.5 mm·s-1. The laser ablation process in water was sustained for a duration of 7 hours.