Thiol-modified activated carbon material for sensor technology

Anar Zhexembekova, Nuriya Akhmetova, Anara Molkenova, Zhumabay Bakenov, Danny O'Hare

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Activated carbon (AC) is a material of great potential in production of membranes for a construction of novel electrochemical sensors due to highly microporous structure and greater surface area per unit volume [1]. Herein we report the production of thiol-modified activated-carbon-based composite. It was obtained by treatment of ketjen black (KB) with concentrated nitric acid (69 wt.%) and further mixing with sulfur (5 wt.%) through high-energy ball milling process. The obtained composite underwent two-stage heat treatment in a tubular furnace under an atmosphere of Ar followed by 4% H2 in N2. All samples were characterized using thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FT-IR). The presence of thiol functional was validated by absorbance peaks at around 665 cm-1 and 2360 cm-1. As revealed by TGA, sulfur doped activated KB (KB/S) underwent significant mass loss (70.5%) compared with KB (0.8%), which corresponds to an increase in the effective surface area.

Original languageEnglish
Pages (from-to)4599-4602
Number of pages4
JournalMaterials Today: Proceedings
Volume4
Issue number3
DOIs
Publication statusPublished - 2017
Externally publishedYes

Fingerprint

Sulfur
Sulfhydryl Compounds
Activated carbon
Thermogravimetric analysis
Nitric Acid
Electrochemical sensors
Sensors
Composite materials
Ball milling
Nitric acid
Fourier transform infrared spectroscopy
Furnaces
Heat treatment
Membranes

Keywords

  • Absorbance
  • Microporous membrane
  • Sensing electrode
  • Sensors
  • Surface area
  • Thiol-modified carbon
  • Working electrode

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Thiol-modified activated carbon material for sensor technology. / Zhexembekova, Anar; Akhmetova, Nuriya; Molkenova, Anara; Bakenov, Zhumabay; O'Hare, Danny.

In: Materials Today: Proceedings, Vol. 4, No. 3, 2017, p. 4599-4602.

Research output: Contribution to journalArticle

Zhexembekova, Anar ; Akhmetova, Nuriya ; Molkenova, Anara ; Bakenov, Zhumabay ; O'Hare, Danny. / Thiol-modified activated carbon material for sensor technology. In: Materials Today: Proceedings. 2017 ; Vol. 4, No. 3. pp. 4599-4602.
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