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TEOS, CTAB를 이용한 세리아 표면 개질이 분산 효과에 미치는 영향

Dispersion effect of Ceria nanoparticle by TEOS and CTAB modification

Si Eun Kim1 Seong Wook Mun1 Xuelong Zhuang1 Sung Woo Han1 Min Young Ko1 박정훈1†
1Dongguk University Chemical and Biochemical Engineering, 1동국대학교 화공생물공학과
In Press, Journal Pre-proof, Available online 1 February 2025

Abstract

본 연구는 개질된 세리아 나노입자 분산 및 현탁 안정성을 위하여 상이한 표면 개질 전략을 사용하여 세리아 나노입자의 표면 특성을 개질하는 것을 목표로 한다. 브로민화 세트리모늄(CTAB)와 같은 양이온 계면활성제와 테트라에틸 규산염 광물(TEOS)와 같은 실란제에 의해 사용되는 두 가지 표면 개질 공정에 대하여 분석 및 논의를 수행한다. 개질 전후 세리아 나노입자의 결합, 표면 개질의 유효성, 현수성 및 분산효과는 각각 X-선 광전자 분광기(XPS), 입자 크기 분석(PSA) 및 zeta potential 시험에 의해 평가되었다. 상기 결과는 TEOS, CTAB가 세리아 입자의 표면을 성공적으로 개질시켰음을 나타내며, 이는 미처리된 세리아 나노입자와 비교하여 표면 개질을 진행한 나노입자의 향상된 분산성 및 현탁 안정성으로 이어졌다.
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.

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