Articles - A rapid synthesis of blue-pigment copper cyclotetraphosphate (Cu2P4O12) ricelike grain nanoparticles at low temperature
- Warunthip Chatjuthamaneea, Rangson Muanghluab, Banjong Boonchomc,d,* and Naratip Vittayakornc,d,e
- a Department of Chemistry, Faculty of Engineering, Rajamangala University of Technology Isan Khon Kaen Campus, Khon Kaen 40000, Thailand b Department f Electronics, Faculty of Engineering, King Mongkuts Institute of Technology Ladkrabang, Bangkok 10520, Thailand c King Mongkut's Institute of Technology Ladkrabang, Chumphon Campus, 17/1 M. 6 Pha Thiew District, Chumphon, 86160, Thailand d Advanced Materials Science Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand e Electroceramic Research Laboratory, College of KMITL Nanotechnology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
Abstract
A blue-pigment copper cyclotetraphosphate Cu2P4O12 was synthesized by a simple wet preparation method using copper oxide and phosphoric acid at 350 οC. The crystallite size obtained from X-ray line broadening is 53 ± 11 nm for the Cu2P4O12. The FTIR spectrum of Cu2P4O12 is assigned a base on the P4O12 4- ion in the structure, which indicates the most striking feature of cyclotetraphospate. XRD and FTIR results of the synthesized Cu2P4O12 indicate the pure monoclinic phase with space group C2h 6 (C2/c). SEM micrographs of the synthesized Cu2P4O12 show rice-like grains, a porous structure and agglomerations, which are important for a specific application. The UV-Vis-NIR spectrum confirms the octahedral coordination of the Cu (II) ion and blue pigment.
Keywords: Copper cyclotetraphosphate, FTIR, Rice-like grains, XRD, UV-Vis-near IR.
This Article
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