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 language | English |
|---|---|
| Pages (from-to) | 4599-4602 |
| Number of pages | 4 |
| Journal | Materials Today: Proceedings |
| Volume | 4 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2017 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Thiol-modified activated carbon material for sensor technology
AU - Zhexembekova, Anar
AU - Akhmetova, Nuriya
AU - Molkenova, Anara
AU - Bakenov, Zhumabay
AU - O'Hare, Danny
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Absorbance
KW - Microporous membrane
KW - Sensing electrode
KW - Sensors
KW - Surface area
KW - Thiol-modified carbon
KW - Working electrode
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UR - http://www.scopus.com/inward/citedby.url?scp=85020899654&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2017.04.035
DO - 10.1016/j.matpr.2017.04.035
M3 - Article
VL - 4
SP - 4599
EP - 4602
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
SN - 2214-7853
IS - 3
ER -