Premium
Core@double‐shell structured multifunctional phase change microcapsules based on modified graphene oxide Pickering emulsion
Author(s) -
Wei Huan,
Yang Wenbin,
He Fangfang,
Li Yongsheng,
Lou Lan,
Wang Renchao,
He Ren,
Fan Jinghui,
Zhang Kai
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6022
Subject(s) - emulsion , materials science , pickering emulsion , shell (structure) , electromagnetic shielding , core (optical fiber) , oxide , phase (matter) , graphene , thermal stability , tungstate , contact angle , chemical engineering , composite material , shielding effect , nanotechnology , chemistry , organic chemistry , engineering , metallurgy
Summary New multifunctional phase change microcapsules with paraffin (Pn) as core and GO and lead tungstate (PbWO 4 ) as double‐shell were designed by modified GO Pickering emulsion, and the effect of GO content on Pn@GO@PbWO 4 microcapsules was studied. The morphology, chemical composition, and structure of Pn@GO@PbWO 4 microcapsules were characterized, and their performance was studied in depth. The Pn@GO@PbWO 4 microcapsules had a dense shell and a regular spherical structure. Compared with microcapsules without GO addition, the resultant Pn@GO@PbWO 4 microcapsules could demonstrate high phase change reliability and thermal stability. Most of all, the anti‐seepage performance had been greatly improved by 67.27%. The results of contact angle (CA) measurement and gamma‐ray shielding test showed that the GO and PbWO 4 double‐shell multifunctional microcapsules with superhydrophobic property and good gamma‐ray shielding property and high anti‐seepage performance had great attraction in expanding the application field of phase change materials.