Synthesis of hydrophobically modified, rice husk-derived spherical silica particles
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Rice husks are a renewable source of silicon because of their high silica content. In this study, hydrophobic spherical silicaparticles, which are widely used in several industries, were synthesized using rice husk-derived silica. Silica was extracted assodium silicate using a one-pot alkali hydrothermal treatment and ball milling equipment. Spherical particles of silica weresynthesized by the precipitation of sodium silicate using acetic acid and a polyethylene glycol additive; subsequently theywere modified with triethoxyvinylsilane to obtain hydrophobic silica particles. The presence of C-H on the surface of the silicaparticles was confirmed by Fourier-transform infrared spectroscopy, which revealed the hydrophobicity of the particles. The contact angle of the modified spherical silica particles was 159°, whereas that of the unmodified silica particles was 0°. The hydrophobicity was confirmed by dispersing the particles in water. This study thus demonstrated that rice husk-derivedsilica can serve as an alternative to chemically derived silica; moreover, the material can be integrated into existing silicaprocesses and used as a polymer filler.
Abstract
Rice husks are a renewable source of silicon because of their high silica content. In this study, hydrophobic spherical silicaparticles, which are widely used in several industries, were synthesized using rice husk-derived silica. Silica was extracted assodium silicate using a one-pot alkali hydrothermal treatment and ball milling equipment. Spherical particles of silica weresynthesized by the precipitation of sodium silicate using acetic acid and a polyethylene glycol additive; subsequently theywere modified with triethoxyvinylsilane to obtain hydrophobic silica particles. The presence of C-H on the surface of the silicaparticles was confirmed by Fourier-transform infrared spectroscopy, which revealed the hydrophobicity of the particles. The contact angle of the modified spherical silica particles was 159°, whereas that of the unmodified silica particles was 0°. The hydrophobicity was confirmed by dispersing the particles in water. This study thus demonstrated that rice husk-derivedsilica can serve as an alternative to chemically derived silica; moreover, the material can be integrated into existing silicaprocesses and used as a polymer filler.
참고문헌 (23)
- I. K. Ulfah, , Procedia Chem, 16, pp.258~264 (2015)
- Z. Feng, , Analyst, 143, pp.2090~2095 (2018)
- F. Yang, , J. Appl. Polym. Sci, 69, pp.355~361 (1998)
- N. Suzuki, , Phys. Chem. Chem. Phys, 14, pp.7427~7432 (2012)
- B. C. Guo, , Polym. J, 42, pp.319~326 (2010)
- S. W. Ha, , Chem. Commun, 20, pp.2881~2883 (2009)
- I. Mora-Barrantes, , J. Mater. Chem, 22, pp.1403~1410 (2012)
- W. A. Daoud, , Appl. Surf. Sci, 252(15), pp.5368~5371 (2006)
- E. N. Ngouangna, , J. Mol. Liq, 315, pp.113740~ (2020)
- SangManKoo, "Surface modification of silica particles with organoalkoxysilanes through two-step (acid-base) process in aqueous solution", Journal of Ceramic Processing Research, 3(3), pp.216~221 (2002), 청정에너지연구소
- T. Jesionowski, , Colloids Surf. A:Physicochem. Eng. Aspects, 207(1-3), pp.49~58 (2002)
- "Biomass research and development technical advisory committee", Roadmap for bioenergy and biobased products in the United States, ~ (2007)
- J. Chun, , Sustainability, 12, pp.10683~ (2020)
- J. Zhou, , Agron J, 114(1), pp.555~564 (2022)
- Y. Shen, , Renew. Sustain. Energy Rev, 80, pp.453~466 (2017)
- Young-Hoon Yun, "Characterization of SiC powders synthesized from rice husks and fused silica powder by carbothermal reduction reaction", Journal of Ceramic Processing Research, 23(3), pp.247~251 (2022), 청정에너지연구소[DOI]
- Do Quang Minh, "Effect of composition on the ability to form SiC", SiO2-C composite from rice husk and silica gel, 2021, pp.22(2), 246~251[DOI]
- Aliff Akhmal Mohd Fazli, "Optimization of rice husk ash (RHA) as partial replacement of cementing material in structural ceramic composite concrete using response surface methodology (RSM) statistical experimental design", Journal of Ceramic Processing Research, 21(6), pp.667~682 (2020), 청정에너지연구소[DOI]
- J. Y. Park, , Chem. Biol. Technol. Agric, 10, pp.102~ (2023)
- Jinyoung Chun, "Synthesis of ordered mesoporous silica with various pore structures using high-purity silica extracted from rice husk", Journal of Industrial and Engineering Chemistry, 81, pp.135~143 (2020), 한국공업화학회[DOI]
- S. Kim, , Nanoscale Adv, 3, pp.6965~6973 (2021)
- I. -S. Jang, , Chem. Eng. & Technol, 45, pp.381~384 (2022)
- M. Fawer, , Int. J. LCA, 4, pp.207~212 (1999)