Recovery of Palladium from Acidic Solution Using Polyethylenimine-Crosslinked Calcium Silicate Hydrate Derived from Oyster Shell Waste: Adsorption and Mechanisms

Figure 1

TEM images of (a, b) CSH and (c, d) PEI-CSH at 12,000x (a, c) and 195,000x (b, d) magnification.

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(b)

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(d)