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

Table 1

Thermogravimetric analysis of the functionalized NPs.

Sample	Wt% loss; 250–700°C	Residue; @700°C	Grafting density; (nm^−2)
Lysine NPs	28.0	72.0	16.0
p-Hydroxybenzoic NPs	26.5	73.5	15.7
Fumaric NPs	47.8	52.2	47.5
4-Formylbenzoic NPs	5.8	94.2	2.5