Synthesis and characterization of enhanced silica nanoparticle (SiO2) prepared from rice husk ash immobilized of 3-(chloropropyl) triethoxysilanea

Rice Husk Ash (RHA) is the by-product for rice mill industry and it is considered as waste material. It is considered a way to recycle materials, which is one of the types of renewable energy. Many types of research focused on RHA are targeting the high contain Sodium silicate. Sodium silicate to be converted to silica. The sol-gel technique offered a simple route in producing silica Rice husk ash immobilized with 3-(chloropropyl) trimethoxysilane (RHACCl) from RHA, where 3-(chloropropyl) trimethoxysilane (CPTES) is used to reduce the RHA into high-quality silica nanoparticle. Silica produced from this technique is found to have the presence of carbon; silicon and chlorine were determined by a combination of elemental analysis by EDX. UV-visible absorbance spectra of the RHACCl NPs silica samples having a wavelength of 333 nm showing absorbance in the ultraviolet region. FTIR spectroscopy scanning electron microscopy (FESEM) and energy dispersive spectrometry. The spectral proof obtained in this research showed that CPTES was installed on the SiO2 surface. The reaction was successful through the presence of chlorine ion, which is considered an important organic function, and the presence of chlorine in the amorphous SiO2 is an important starting point to developing the wide range from silica-based materials. (C) 2021 Elsevier Ltd. All rights reserved.