TEOS, CTAB를 이용한 세리아 표면 개질이 분산 효과에 미치는 영향

초록

The objective of this study is to alter the surface characteristics of modified ceria nanoparticles through various surface modification techniques to enhance their dispersion and suspension stability. Two surface modification methods were examined and compared: the use of cationic surfactants, such as cetrimonium bromide (CTAB), and silane coupling agents, such as tetraethyl orthosilicate (TEOS). The effects of surface modification on ceria nanoparticles were evaluated using X-ray photoelectron spectrometry (XPS), particle size analysis (PSA), and zeta potential tests. The study examined the binding, effectiveness, suspension, and dispersion of the particles before and after modification. The results indicate that TEOS and CTAB were successful in modifying the surface of the ceria particles, resulting in improved dispersibility and suspension stability of the surface-modified nanoparticles compared to untreated ceria nanoparticles.

키워드