Synthesis of uniform silica particles with controlled size by organic amine base catalysts via one-step process

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>Uniform silica particles were synthesized by synergistic combination of sodium 4-styrene sulfonate (NaSS) anionic surfactant and organic amine base catalyst such as ethylenediamine (EDA) or diethylenetriamine (DETA). The EDA and DETA organic amine base catalysts could promote the growth reaction rate so that they produced larger silica particles compared to the NH<SUB>4</SUB>OH base catalyst because the organic amines provide more basic micro-environment near the surface of the silica particle due to multiple amine groups in a single molecule. Accordingly, the size of the silica particle was 450±12nm (NH<SUB>4</SUB>OH), 725±21nm (EDA), and 942±130nm (DETA) in similar pH conditions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Uniform silica particles were synthesized by organic amine base catalysts. </LI> <LI> Organic amine base catalysts provide more basic micro-environment. </LI> <LI> Organic amine base catalysts promote the growth reaction rate. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>