Nuradibah Mohd Amer
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Nuradibah Mohd Amer
Official Name
Nuradibah, Mohd Amer
Alternative Name
Mohd Amer, Nuradibah A.
Nuradibah, M. A.
Amer, Nuradibah Mohd M.
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Scopus Author ID
57219024135

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  • Publication
    Siliceous waste material supported MOF-5 for carbon monoxide capture at low temperature
    (Springer Nature, 2025)
    Irvan Dahlan
    ;
    Mak Kar Yee
    ;
    Anis Natasha Shafawi
    ;
    Nuradibah Mohd Amer
    This study investigated the removal of carbon monoxide (CO) by using modified metal–organic framework-5 (MOF-5) adsorbent. The incorporation of siliceous waste materials (i.e., rice husk ash (RHA) and coal fly ash (CFA)) and the effect of sonication and triethylamine (TEA) were investigated to determine their effect on CO capture performance. Experimental results showed that the combined use of sonication, TEA and the presence of siliceous waste materials in MOF-5 resulted in a significant increase in the CO adsorption capacity from 1.8 mg/g (pristine MOF-5) to 8.18 mg/g (modified MOF-5-RHA1000-CFA(2:1)-TEA/UB/b). Kinetic studies showed that the pseudo-second-order kinetic model could more accurately predict the CO adsorption on the modified MOF-5 adsorbent, suggesting that chemisorption is the main mechanism for CO capture. Characterization techniques using BET, FTIR, and SEM/EDX verified structural and compositional changes in the modified MOF-5. This study provided valuable insights into the potential of siliceous waste material supported MOF-5 for efficient CO capture, suggesting future research directions in understanding the sonication effect and optimizing synthesis conditions for improved sustainability and performance.
      1  5
  • Publication
    Development of high-performance COâ‚‚ adsorbents from urea-modified Leucaena leucocephala hydrochar
    (Springer, 2025-02)
    Nuradibah Mohd Amer
    ;
    Anis Natasha Shafawi
    ;
    Pooya Lahijani
    ;
    Maedeh Mohammadi
    ;
    Abdul Rahman Mohamed
    This study explores the development of urea-functionalized hydrochar from Leucaena leucocephala wood (LW) for COâ‚‚ capture. Hydrochar was produced via hydrothermal carbonization at 170 Â°C for 90 min and subsequently functionalized with urea. The effects of urea: hydrochar ratio (1:1 to 3:1), activation temperature (400–800 Â°C), and heating rate (5–15 Â°C/min) on COâ‚‚ adsorption capacity were investigated. Optimal conditions (2:1 urea: hydrochar ratio, 600 Â°C activation temperature, 5° C/min heating rate) increased COâ‚‚ adsorption capacity from 13.09 mg/g to 76.20 mg/g. The modified adsorbent demonstrated high affinity towards COâ‚‚ over N2, CH4, and Oâ‚‚, and maintained performance over 11 adsorption–desorption cycles. Kinetic studies revealed physisorption as the primary adsorption mechanism. In fixed-bed column tests, best performing conditions within the tested ranges (30 ml/min flow rate, 15% COâ‚‚ concentration, 30 Â°C) yielded a COâ‚‚ uptake of 195.54 mg/g. This study demonstrates the potential of urea-functionalized hydrochar from Leucaena leucocephala as an efficient, sustainable adsorbent for COâ‚‚ capture.
      1  1