This review article by Cheng-Hsiu Yu, Chih-Hung Huang, and Chung-Sung Tan from the Department of Chemical Engineering at National Tsing Hua University, Taiwan, focuses on the technologies of CO₂ capture using chemical absorption and adsorption methods, particularly for post-combustion power plants. The authors discuss the operation of chemical absorption processes, including the use of absorbents such as ionic liquids, alkanolamines, and their blended aqueous solutions, addressing key concerns such as CO₂ capture efficiency, absorption rate, energy required for regeneration, and absorber volume. For adsorption, the article reviews various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes, comparing their selection criteria, including cost, adsorption rate, CO₂ adsorption capacity, and thermal stability. The paper also proposes more effective and less energy-consuming regeneration techniques for CO₂-loaded adsorbents and suggests future research directions for both absorption and adsorption technologies.This review article by Cheng-Hsiu Yu, Chih-Hung Huang, and Chung-Sung Tan from the Department of Chemical Engineering at National Tsing Hua University, Taiwan, focuses on the technologies of CO₂ capture using chemical absorption and adsorption methods, particularly for post-combustion power plants. The authors discuss the operation of chemical absorption processes, including the use of absorbents such as ionic liquids, alkanolamines, and their blended aqueous solutions, addressing key concerns such as CO₂ capture efficiency, absorption rate, energy required for regeneration, and absorber volume. For adsorption, the article reviews various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes, comparing their selection criteria, including cost, adsorption rate, CO₂ adsorption capacity, and thermal stability. The paper also proposes more effective and less energy-consuming regeneration techniques for CO₂-loaded adsorbents and suggests future research directions for both absorption and adsorption technologies.