Fibrous Silica KCC-1 as a Platform for Mn-Based Dual Metal Oxide Adsorbents for CO2 Capture

Authors

  • Syawal Mohd Yusof Department of Science and Technology, Universiti Putra Malaysia Bintulu Campus, Nyabau road, P.O. Box 396, 97008 Bintulu, Sarawak, Malaysia.
  • Dr Azizul Hakim Department of Science and Technology, Universiti Putra Malaysia Bintulu Campus, Nyabau road, P.O. Box 396, 97008 Bintulu, Sarawak, Malaysia.
  • Dr Nurul Asikin Department of Chemical Science, Faculty of Science and Technologi, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
  • Umar Kalmar Nizar Chemistry Department, Faculty of Mathematic and Natural Science, Universitas Negeri Padang
  • Siti Sarahah Sulhadi Department of Science and Technology, Universiti Putra Malaysia Bintulu Campus, Nyabau road, P.O. Box 396, 97008 Bintulu, Sarawak, Malaysia.
  • Salma Samidin Department of Chemical Science, Faculty of Science and Technologi, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
  • Ainil Hafiza Abdul Aziz Department of Science and Technology, Universiti Putra Malaysia Bintulu Campus, Nyabau road, P.O. Box 396, 97008 Bintulu, Sarawak, Malaysia.

DOI:

https://doi.org/10.17344/acsi.2025.9370

Abstract

The continuous rise in atmospheric CO2 levels due to industrial emissions and fossil fuel combustion has intensified the need for efficient carbon capture. Solid adsorbents are favoured for their reusability and low energy demand, yet often face limitations in thermal stability and adsorption performance. This study examines the effect of co-loading manganese (Mn) with potassium (K), copper (Cu), and calcium (Ca) on fibrous silica KCC-1 for CO2 capture over a wide temperature range. KCC-1 was synthesised via a microemulsion method, and metals were introduced using an ultrasonic-surfactant-assisted impregnation technique. Characterisation using XRD, FTIR, BET, FESEM-EDX, and CO2-TPD confirmed structural integrity, surface functionality, and adsorption behaviour. CaO-MnO@KCC-1 shows the most balanced textural properties and the highest CO2 uptake due to its strong basicity and varied adsorption site strength. This highlights its potential as a temperature-flexible CO2 adsorbent.

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Published

03.09.2025

Issue

Vol. 72 No. 3 (2025): Acsi

Section

Applied chemistry

License

Copyright (c) 2025 Syawal Mohd Yusof, Azizul Hakim Lahuri, Nurul Asikin Mijan, Umar Kalmar Nizar, Siti Sarahah Sulhadi, Salma Samidin, Ainil Hafiza Abdul Aziz

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License