Abstract
In this paper, we have extracted Silica from rice husk ash (RHA) by sodium hydroxide to produce sodium silicate. 3-(chloropropyl)triethoxysilane (CPTES) functionalized with sodium silicate via a sol-gel method in one pot synthesis to prepare RHACCl. Chloro group in compound RHACCl replacement in iodo group to prepere RHACI. The FT-IR clearly showed absorption band of C-I at 580 cm-1. Functionalized silica RHACI has high surface area (410 m2/g) and average pore diameter (3.8 nm) within mesoporous range. X-ray diffraction pattern showed that functionalized silica RHACI has amorphous phase .Thermogravemitric analysis (TGA) showed two decomposition stages and SEM morphology of RHACI showed that the particles have irregular shape. Atomic force microscope (AFM) technique was proved that the RHACI has a nanostructure The XPS spectra of I 3d for all the studied surfaces are presented in the peak located at 618.5 eV binding energy was associated with C–I bond.
Highlights
Rice factories produce a large amounts of rice husk ash (RHA)
In the present work, we depended on a method used to functionalize silica extracted from rice husk ash with CPTES using a low-cost, and environment-friendly method
The rice husk was used to prepare silica immobilized with CPTES to prepare RHACCl
Summary
Rice factories produce a large amounts of rice husk ash (RHA). The rice husk ash includes more than 94% of amorphous silica [1]. The surface of silica contains two types of functional groups namely the siloxane (Si-O-Si) and silanol (O-H) groups. The prime modification route accrued via reaction of silanol groups on the surface of silica with particular molecule [2]. The organic-chloro functionalization of amorphous silica is a significant starting material of synthesis more different of silica which includes a chloro end group can be utilized for immobilizing variety of organic moieties on the silica. RHACCl can be utilized as a starting material for the synthesis heterogeneous catalyst [3].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
