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pH-controlled synthesis of sustainable lauric acid/SiO2 phase change material for scalable thermal energy storage

Title
pH-controlled synthesis of sustainable lauric acid/SiO2 phase change material for scalable thermal energy storage
Author
지텐드라 쿠마 싱
Issue Date
2021-07
Publisher
NATURE RESEARCH
Citation
SCIENTIFIC REPORTS, v. 11, NO 1, Page. 1-15
Abstract
Lauric acid (LA) has been recommended as economic, eco-friendly, and commercially viable materials to be used as phase change materials (PCMs). Nevertheless, there is lack of optimized parameters to produce microencapsulated PCMs with good performance. In this study, different amounts of LA have been chosen as core materials while tetraethyl orthosilicate (TEOS) as the precursor solution to form silicon dioxide (SiO2) shell. The pH of precursor solution was kept at 2.5 for all composition of microencapsulated LA. The synthesized microencapsulated LA/SiO2 has been characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-Ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM). The SEM and TEM confirm the microencapsulation of LA with SiO2. Thermogravimetric analysis (TGA) revealed better thermal stability of microencapsulated LA/SiO2 compared to pure LA. PCM with 50% LA i.e. LAPC-6 exhibited the highest encapsulation efficiency (96.50%) and encapsulation ratio (96.15%) through Differential scanning calorimetry (DSC) as well as good thermal reliability even after 30th cycle of heating and cooling process.
URI
https://www.proquest.com/docview/2554122844?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/172509
ISSN
2045-2322
DOI
10.1038/s41598-021-94571-0
Appears in Collections:
OFFICE OF ACADEMIC AFFAIRS[E](교무처) > Center for Creative Convergence Education(창의융합교육원) > Articles
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