Description

5 grams/85 €
25 grams/390 €
100 grams/1180 €
500 grams/4490 €
1000 grams/8380 €

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(-COOH) Functionalized Double Walled Carbon Nanotubes

Purity: > 65%, Length: 48 µm, black

(-COOH) Functionalized Double Walled Carbon Nanotubes (DWCNT‑COOH) are advanced nanomaterials produced via CVD, consisting of two concentric nanotubes with controlled dimensions (OD 2–4 nm, length ~48 µm). The carboxyl functional groups improve dispersibility, chemical reactivity, and compatibility with polymers and biological systems. With high electrical conductivity (98 S/cm), large surface area, and unique optical and mechanical properties, DWCNT‑COOH are suitable for applications in energy storage, electronics, composites, catalysis, and biomedical research.

Technical Properties
Purity	> 65 %
Content of (-COOH)	2.6%
Color	black
Length	48 µm
OD	2-4 nm
ID	1-3 nm
Tap Density	0.15 g/cm3
True Density	2.2 g/cm3
Ash	1.5 wt%
Electrical Conductivity	98 S/cm
Manufacturing Method	CVD
CAS No	308068-56-6

Applications

Medicine & Biotechnology: The carboxyl groups enhance biocompatibility and dispersibility, enabling use in drug delivery systems, biosensors, and nanoprobes for diagnostics and targeted therapies.
Composites & Mechanics: Functionalized DWCNTs act as reinforcement agents in polymers, ceramics, and metals, improving mechanical strength, toughness, and electrical conductivity of CNT composites.
Electronics: Their high electrical conductivity (≈98 S/cm) and unique optical properties make them suitable for field emission displays (FEDs), field emission transistors (FETs), gas‑discharge tubes, and flat‑panel displays, supporting miniaturized and high‑performance devices.
Energy Storage: DWCNT‑COOH are used as conductive additives in lithium batteries and supercapacitors, enhancing charge transport, cycle stability, and energy density. They are also explored for hydrogen storage due to their layered structure and functionalization.
Catalysis & Chemicals: The large specific surface area and carboxyl groups provide active sites for heterogeneous catalysis and electrocatalysis, making them effective catalyst supports in chemical and energy conversion processes.
Solar & Optoelectronics: Functionalized DWCNTs are applied in solar cells as conductive scaffolds and charge transport layers, and in photoluminescence studies, contributing to higher efficiency in optoelectronic devices.
Templates & Nanotechnology Tools: Their controlled dimensions and functional groups allow use as templates for nanostructure growth and advanced nanotechnology research