Synthesis of Pd(DDTT)2 Nano-Chelate by Decreasing the Solubility of Bulk Chelate Organic Solvent and Thermolysis to PdO Nanoparticles: Characterzation and Factorial Design

Abstract

The 5, 6- Diphenyl-2,3-dihydro-asym-triazine-3-thione (DDTT) chelating agent and its Pd(DDTT)₂ chelate were synthesized. The nano-chelate was prepared by decreasing the solubility of bulk chelate in its chloroform solution by addition of ethanol. The produced nanoparticles of Pd(DDTT)₂ (mean particle size 4.4 nm) were separated by centrifugation. The thermolysis of nano-chelate at 410°C in an air oven gave very fine and porous particles of PdO with a narrow size distribution (2.0–5.7 nm) and the specific surface area (SSA) of 81.2 m².g⁻¹. The synthesized products were characterized by XRD, TEM, DLLS, BET, TG, and elemental microanalysis. The thermolysis process was optimized using 2³ factorial design.

Keywords:

• chelate thermolysis
• factorial design
• nano PdO
• Pd nano-chelate