An efficient and room temperature synthesis of Fe3+ doped chlorocadmiumphosphate molecular sieves: Spectroscopic, thermal and powder XRD investigations

This paper mainly reports on the structural investigations of Fe3+ doped chlorocadmiumphosphate CdHPO4Cl·[H3N(CH2)6NH3]0.5 nanocrystals prepared at room temperature by organic amine templated method. Synthesized crystals are characterized by various spectroscopic techniques. From the powder X-ray diffraction patterns, the crystal system is indexed to monoclinic unit cell with lattice parameters a = 13.533, b = 15.008, c = 10.363 Å and β = 118.3°. The average size of the crystallite evaluated is 110 nm. FT-IR spectrum contains absorption bands related to organic amine and phosphate ions. The thermal analysis indicates that the inorganic framework collapses above 300 °C, after the removal of the organic amine template. From optical absorption and EPR studies the crystal field, Racah parameters and g values suggested that the doped Fe3+ ions entered the network at distorted octahedral site.

Graphical abstractFe3+ ions doped chlorocadmiumphosphate CdHPO4Cl [H3N(CH2)6NH3]0.5 crystals are grown at room temperature by organic amine template method. Thermal analysis of the these crystals showed that the structure of the complex is stable up to 300 °C after that the structure of the complex collapsed due to the decomposition of organic amine HMDA.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► This method is simple to synthesize MOF materials at room temperature. ► The prepared samples are highly crystalline and stable up to 300 °C temperature. ► These materials are used in the fields of catalysis. ► This method of preparation is eco-friendly and green synthesis.