Figure 1

SEM and EDX elemental percentages plots of BM-WB materials: (a) before adsorption (10 k × and 40 k ×); (b) after adsorption (10 k × and 40 k ×); (c) elemental percentages before adsorption; (d) elemental percentages after adsorption.

SEM and EDX elemental percentages plots of BM-WB materials: (a) before adsorption (10 k × and 40 k ×); (b) after adsorption (10 k × and 40 k ×); (c) elemental percentages before adsorption; (d) elemental percentages after adsorption.