Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones
Carbon nanotube-quicklime nanocomposites (CQNs) have been synthesized via the chemical vapor deposition (CVD) of n-hexane using a nickel metal catalyst supported on calcined carbonate stones at temperatures of 600–900 °C. The use of a Ni/CaO(10 wt%) catalyst required temperatures of at least 700 °C...
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| Format: | Article |
| Language: | English |
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MDPI
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/38272/ http://psasir.upm.edu.my/id/eprint/38272/1/38272.pdf |
| _version_ | 1848848833401847808 |
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| author | Ibrahim, Ruzanna Hussein, Mohd Zobir Yusof, Nor Azah Abu Bakar, Fatimah |
| author_facet | Ibrahim, Ruzanna Hussein, Mohd Zobir Yusof, Nor Azah Abu Bakar, Fatimah |
| author_sort | Ibrahim, Ruzanna |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Carbon nanotube-quicklime nanocomposites (CQNs) have been synthesized via the chemical vapor deposition (CVD) of n-hexane using a nickel metal catalyst supported on calcined carbonate stones at temperatures of 600–900 °C. The use of a Ni/CaO(10 wt%) catalyst required temperatures of at least 700 °C to obtain XRD peaks attributable to carbon nanotubes (CNTs). The CQNs prepared using a Ni/CaO catalyst of various Ni contents showed varying diameters and the remaining catalyst metal particles could still be observed in the samples. Thermogravimetric analysis of the CQNs showed that there were two major weight losses due to the amorphous carbon decomposition (300–400 °C) and oxidation of CNTs (400–600 °C). Raman spectroscopy results showed that the CQNs with the highest graphitization were synthesized using Ni/CaO (10 wt%) at 800 °C with an IG/ID ratio of 1.30. The cyclic voltammetry (CV) of screen-printed carbon electrodes (SPCEs) modified with the CQNs showed that the performance of nanocomposite-modified SPCEs were better than bare SPCEs. When compared to carboxylated multi-walled carbon nanotubes or MWNT–COOH-modified SPCEs, the CQNs synthesized using Ni/CaO (10 wt%) at 800 °C gave higher CV peak currents and comparable electron transfer, making it a good alternative for screen-printed electrode modification. |
| first_indexed | 2025-11-15T09:40:47Z |
| format | Article |
| id | upm-38272 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:40:47Z |
| publishDate | 2019 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-382722020-05-04T16:10:40Z http://psasir.upm.edu.my/id/eprint/38272/ Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones Ibrahim, Ruzanna Hussein, Mohd Zobir Yusof, Nor Azah Abu Bakar, Fatimah Carbon nanotube-quicklime nanocomposites (CQNs) have been synthesized via the chemical vapor deposition (CVD) of n-hexane using a nickel metal catalyst supported on calcined carbonate stones at temperatures of 600–900 °C. The use of a Ni/CaO(10 wt%) catalyst required temperatures of at least 700 °C to obtain XRD peaks attributable to carbon nanotubes (CNTs). The CQNs prepared using a Ni/CaO catalyst of various Ni contents showed varying diameters and the remaining catalyst metal particles could still be observed in the samples. Thermogravimetric analysis of the CQNs showed that there were two major weight losses due to the amorphous carbon decomposition (300–400 °C) and oxidation of CNTs (400–600 °C). Raman spectroscopy results showed that the CQNs with the highest graphitization were synthesized using Ni/CaO (10 wt%) at 800 °C with an IG/ID ratio of 1.30. The cyclic voltammetry (CV) of screen-printed carbon electrodes (SPCEs) modified with the CQNs showed that the performance of nanocomposite-modified SPCEs were better than bare SPCEs. When compared to carboxylated multi-walled carbon nanotubes or MWNT–COOH-modified SPCEs, the CQNs synthesized using Ni/CaO (10 wt%) at 800 °C gave higher CV peak currents and comparable electron transfer, making it a good alternative for screen-printed electrode modification. MDPI 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/38272/1/38272.pdf Ibrahim, Ruzanna and Hussein, Mohd Zobir and Yusof, Nor Azah and Abu Bakar, Fatimah (2019) Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones. Nanomaterials, 9 (9). art. no. 1239. pp. 1-17. ISSN 2079-4991 https://www.mdpi.com/2079-4991/9/9/1239 10.3390/nano9091239 |
| spellingShingle | Ibrahim, Ruzanna Hussein, Mohd Zobir Yusof, Nor Azah Abu Bakar, Fatimah Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title | Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title_full | Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title_fullStr | Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title_full_unstemmed | Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title_short | Carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| title_sort | carbon nanotube-quicklime nanocomposites prepared using a nickel catalyst supported on calcium oxide derived from carbonate stones |
| url | http://psasir.upm.edu.my/id/eprint/38272/ http://psasir.upm.edu.my/id/eprint/38272/ http://psasir.upm.edu.my/id/eprint/38272/ http://psasir.upm.edu.my/id/eprint/38272/1/38272.pdf |