Syawal Mohd Yusof, Azizul Hakim Lahuri, Nurul Asikin Mijan, Umar Kalmar Nizar, Siti Sarahah Sulhadi, Salma Samidin, Ainil Hafiza Abdul Aziz
The continuous rise in atmospheric CO2levels 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 CO2capture 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 CO2uptake due to its strong basicity and varied adsorption site strength. This highlights its potential as a temperature-flexible CO2adsorbent. © Except when otherwise noted, articles in this journal are published under the terms and conditions of the Creative Commons Attribution 4.0 International License
Department of Science and Technology, Universiti Putra Malaysia Sarawak, Nyabau Road, P.O. Box 396, Sarawak, Bintulu, 97008, Malaysia; Department of Chemical Science, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, Bangi, 43600, Malaysia; Chemistry Department, Faculty of Mathematic and Natural Science, Universitas Negeri Padang
