Barma, S.D.; Tej, S.S.P.; Ramya, B.; Sathish, R.
(Energy and Fuels, 33(9), 2019: 8165-8175)
The nature of coal surfaces changes from hydrophobic to hydrophilic due to the adsorption of hydrophilic oxygenated functionalities upon weathering or natural oxidation. The presence of such oxygenated functionalities ...