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Updated: Feb 4, 2026

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of ManganeseII Acetylacetonate
Published on: June 18, 2020
Modeling coupled kinetics of antimony adsorption/desorption and oxidation on manganese oxides
Zhenqing Shi1, Shimeng Peng, Pei Wang
1School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China. zqshi@scut.edu.cn.
Abstract:
Understanding the kinetic reactions of antimony (Sb) at the MnO2-water interface is essential for predicting the dynamic behavior of Sb in soil environments. In this study, we developed a quantitative model for assessing the coupling between Sb(iii) oxidation and Sb(iii)/Sb(v) adsorption/desorption kinetics and the role of each individual reaction process in controlling the overall reaction rates. Based on our modeling results, Sb(iii) oxidation rates were very fast at the early stages of the reactions and may significantly slow down with time, and Sb(iii) and Sb(v) showed different adsorption behavior on δ-MnO2. Our kinetics model is able to account for different adsorption/desorption kinetics of Sb(iii) and Sb(v) and the changes of Sb(iii) oxidation rates during the coupled kinetic processes, which provides a general modeling framework for predicting Sb kinetic behavior at the MnO2-water interface.
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