Journal of Applied Science and Engineering

Published by Tamkang University Press


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Omar Qistina1,4, Ali Salmiaton1,2This email address is being protected from spambots. You need JavaScript enabled to view it., Thomas S.Y. Choong1,2, Shamsul Izhar1,2, and Yun Hin Taufiq-Yap3

1Department of Chemical & Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

2Sustainable Process Engineering Research Centre, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

3Catalysis Science and Technology Research Centre, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

4Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangor, Kampus Dengkil, 43800 Dengkil, Selangor, Malaysia



Received: October 16, 2023
Accepted: January 9, 2024
Publication Date: March 8, 2024

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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Carbon nanotubes (CNTs) have been used as catalyst support in various catalytic activity. The existing CNTs in powder form can create high back pressure and inconvenient operational. Therefore, CNTs coated onto monolith structure provides a promising support for catalyst. In this study, the CNT monolith was synthesized using a chemical vapor deposition (CVD) method with deposition catalyst techniques determined by immersion and impregnation method. The synthesized CNTs monolith were characterized for surface morphology analysis, atomic composition, thermal stability, textural properties, functional group determination and crystallinity. The findings show that the CNTs formed are considered mesoporous nanotubes that attained a diameter size distribution scattered between 30 nm and 35 nm. The carbon yield was successfully achieved at more than 95% by the double immersion in the preparation technique. The CNTs monolith showed a very weak peak due to poor infrared transmittance, while the surface analysis of the CNTs monolith exhibited the type IV isotherm with H3 hysteresis in the presents of mesoporous structures with a relative pressure range of P/Po >0.4. The peak at 2 = 26.46° of the XRD pattern demonstrated a decrease after the synthesizing of CNTs growth onto monolith structure due to the production of carbon. The thermal analysis of the CNTs monolith showed a weight loss of moisture and organic residue of 0.13% and 3%, respectively. The results displayed an optional synthesis method and characterization information of CNTs structured monolith as value added for future production and application

Keywords: carbon nanotubes; monolith; immersion; nickel; chemical vapor deposition

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