Carboxylation and Decarboxylation of Aluminum Oxide Nanoparticles Using Bifunctional Carboxylic Acids and Octylamine

Table 3

Thermogravimetric analysis of the functionalized NPs reacted with octylamine at 25°C and 70°C.

Sample	Reaction temp.; (°C)	Wt% loss; 250–700°C	Residue; @700°C
Lysine NPs	25	17.4	82.6
	70	9.9	90.1
p-Hydroxybenzoic NPs	25	18.1	81.9
	70	18.1	81.9
Fumaric NPs	25	48.0	52.0
	70	48.5	51.5
4-Formylbenzoic NPs	25	6.6	93.4
	70	6.8	93.2

Compare to values for carboxylate NPs given in Table 1.