Porous zincite prepared by the calcination of colloidal starch applied in the removal of dyes and its use as a hybrid pigment

The tones of iron oxide pigments range from yellow, red, brown, green, and black, are non‐toxic, and have a nanometric particle size, which makes them ideal for use as a pigment. This study synthesized synthetic inorganic pigments (SIP) based on iron oxides by the alkaline precipitation method. This route for the synthesis of iron oxide makes them cheaper to obtain reproducible colors. Iron salts (FeCl3, Fe(NO3)3, FeSO4, and Fe2(SO4)3) have been combined with alkaline solutions (NaOH, KOH, and NH4OH) to form colored iron oxides, which are widely known as natural inorganic pigments. The twelve samples produced in four different colors (red, yellow, brown, and black) were left in aqueous suspension and dispersed in commercial real estate paints, white and colorless, to evaluate their behavior as a pigment. Structural characterization (XRD), composition (EDXRF), thermal analysis (TG/DTA), spectroscopy (Raman and photoacoustic), and colorimetry were performed. The phases indexed by XRD were goethite, hematite, magnetite, and lepidocrocite. The inorganic pigments produced showed dispersion compatibility in commercial white paint, without changing the surface coating power, and could be an alternative to produce synthetic inorganic pigments and compatible with natural inorganic pigments.This article is protected by copyright. All rights reserved.

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Porous zincite prepared by the calcination of colloidal starch applied in the removal of dyes and its use as a hybrid pigment

Cited by 2 publications

References 37 publications

Adsorptive removal of Congo red by macroporous ZnO obtained from citrus pectin gelation and reuse as a hybrid pigment

Adsorptive removal of Congo red by macroporous ZnO obtained from citrus pectin gelation and reuse as a hybrid pigment

Synthesis and characterization of iron oxides and their application as inorganic pigments in white paint

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