**2. Description of the Analytical Methods**

*2.1. Thermogravimetric (TGA) Analysis*

The thermogravimetric analysis of the pastes was conducted using the Q50 (TA Instruments) apparatus. The test involved placing a 15–20 mg powdered paste (passed through sieve #200) in an open platinum pan and heating it at a rate of 10 ◦C/min up to 900 ◦C in a nitrogen gas atmosphere (flow rate 60 mL/min).
