@Article{CL.2025.2210.889,
AUTHOR = {K. Wang, G. L. Lian, Y. F. Qiao},
TITLE = {Adsorption behavior and mechanism of heavy metal ions from acid mine drainage using two-dimensional MoS<sub>2</sub> nanosheets},
JOURNAL = {Chalcogenide Letters},
VOLUME = {22},
YEAR = {2025},
NUMBER = {10},
PAGES = {889--904},
URL = {http://www.techscience.com/CL/v22n10/64826},
ISSN = {1584-8663},
ABSTRACT = {The remediation of acid mine drainage (AMD), characterized by its high concentrations of 
toxic metal ions and low pH, presents a significant environmental challenge. In this study, 
exfoliated two-dimensional MoS<sub>₂</sub> nanosheets were prepared using a liquid-phase 
ultrasonication method and evaluated for their efficiency in removing Cd<sup>²⁺</sup>, Cu<sup>²⁺</sup>, and Pb<sup>²⁺</sup> 
from aqueous solutions. Detailed structural and morphological analyses confirmed that the 
exfoliation process significantly enhanced surface area, pore volume, and exposure of 
reactive sulfur sites. Through isotherm and kinetic modeling analyses, the adsorption 
behavior was found to align with the Langmuir model and pseudo-second-order kinetic 
equation, which implies that monolayer chemisorption serves as the primary adsorption 
mechanism. Spectroscopic characterizations revealed the formation of stable metal–sulfur 
complexes, highlighting the pivotal role of sulfur functional groups in binding metal ions. 
The developed MoS<sub>₂</sub> nanosheets demonstrated rapid adsorption kinetics and high removal 
efficiencies under optimal conditions, confirming their potential as a highly effective and 
sustainable material for heavy metal remediation in complex aqueous environments. },
DOI = {10.15251/CL.2025.2210.889}
}