Synthesis and characterization of black, red and yellow nanoparticles pigments from the iron sand

• Main Authors: Mufti Nandang, Atma, T, Fuad, A, Sutadji, E
• Format: Conference Proceeding
• Language: English
• Subjects: Chemical industry; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COPRECIPITATION; FERRITES; HEMATITE; IRON; Iron oxides; MAGNETITE; MORPHOLOGY; NANOPARTICLES; PARTICLE SIZE; PH VALUE; Pigments; Red pigments; Sand; SCANNING ELECTRON MICROSCOPY; SINTERING; SYNTHESIS; TEMPERATURE DEPENDENCE; VARIATIONS; X-RAY DIFFRACTION
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.4897129

The aim of this research is to synthesize nanoparticles of black pigment of Magnetite (Fe3O4), red pigment of hematite (α-Fe2O3), and yellow pigment of ghoetite (α-FeOOH) from the iron sand. The black pigment of Fe3O4 and the yellow pigment α-FeOOH nanoparticles were synthesized by coprecipitation method with variation of pH. Whereas, the red pigment Fe2O3 was sythesized by sintering Fe3O4 nanoparticles at temperature between 400 °C and 700 7°C for 1 hour. All the pigments has been characterized using X-ray diffraction and SEM. The XRD results shown that the particle size of the black pigmen Fe3O4, red pigment Fe3O4 and yellow pigment α-FeOOH are around 12, 32, and 30 nm repectively. The particle size of Fe2O3 nanoparticles increase by increasing sintering temperature from 32 nm at 400 °C to 39 nm at 700 °C. For yellow pigment of α-FeOOH, the particle size increase by increasing pH from 30,54 nm at pH 4 to 48,60 nm at pH 7. The SEM results shown that the morphologies of black, yellow and red pigments are aglomarated.