Publications by authors named "Jebril Hadi"
A novel synthesis of cobalt-iron layered double hydroxide (LDH) with interlayer chlorides was investigated. The method consists in mixing concentrated solutions of hexaamminecobalt(III) trichloride with ferrous chloride at room temperature and in anoxic conditions. Four initial Fe/Co atomic ratios have been tried out (0.
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- A model was created to explain how the excess negative charge in nontronite clays, caused by reducing iron from Fe(III) to Fe(II), is balanced by cation adsorption and H(+) sorption from the solution.
- At low reduction levels, cation adsorption is the primary compensating mechanism, but as reduction increases, significant structural changes occur, including cation migration and dehydroxylation.
- New experimental findings reveal that, contrary to previous beliefs, the negative layer charge in nontronites does not simply plateau after reduction; it actually peaks and then can decrease dramatically after reaching a certain level of reduction.