Novel Environmentally-Friendly Inorganic Pigments Based on Oxide

Abstract

Novel environmentally-friendly inorganic pigments are highly desirable for global environmental conservation. However, development of such pigments with high color hue as well as reliable thermal and chemical stabilities is a hard task without using heavy metals. To obtain a high color hue without toxic heavy metals, it is essential to select a unique crystal structure and constituent elements. Here, we introduce our recent research on environmentally friendly yellow or orange inorganic pigments based on chemically stable oxides, which were selected by consideration of knowledge from studies on ion conducting materials.