TY - JOUR
T1 - Graphene oxide-based mesoporous calcium silicate hydrate sandwich-like structure
T2 - synthesis and application for thermal energy storage
AU - Shamsaei, Ezzatollah
AU - Basquiroto De Souza, Felipe
AU - Fouladi, Amirsina
AU - Sagoe-Crentsil, Kwesi
AU - Duan, Wenhui
N1 - Funding Information:
The authors are grateful for the financial support of the Australian Research Council (IH150100006). They acknowledge the use of instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/1/4
Y1 - 2022/1/4
N2 - In this study, we designed a mesoporous composite with high latent heat capacity, stable structure, and efficient thermal response for thermal energy storage in green building constructions. Graphene oxide (GO) nanosheets were sandwiched by a vertically interconnected network of two-dimensional (2D) calcium silicate hydrate (CSH) nanoplates via an in situ dissolution-coprecipitation strategy to obtain CSH/GO/CSH (CGC). The CGC mesoporous sandwich-like structures with a high specific surface area (677 m2 g-1) and a large pore volume (∼2.5 cm3 g-1) were infiltrated with lauric acid (LA) as phase change materials (PCMs) to produce LA@CGC composites. Our results demonstrated that LA@CGC had a high latent heat value of 118.0-127.6 J g-1 and 92-99% efficiency after 50 heating-cooling cycles, which, together with the reinforcing properties of GO and the compatibility of CSH in cement-based matrixes, makes the composite a sustainable PCM for thermal energy storage in building constructions.
AB - In this study, we designed a mesoporous composite with high latent heat capacity, stable structure, and efficient thermal response for thermal energy storage in green building constructions. Graphene oxide (GO) nanosheets were sandwiched by a vertically interconnected network of two-dimensional (2D) calcium silicate hydrate (CSH) nanoplates via an in situ dissolution-coprecipitation strategy to obtain CSH/GO/CSH (CGC). The CGC mesoporous sandwich-like structures with a high specific surface area (677 m2 g-1) and a large pore volume (∼2.5 cm3 g-1) were infiltrated with lauric acid (LA) as phase change materials (PCMs) to produce LA@CGC composites. Our results demonstrated that LA@CGC had a high latent heat value of 118.0-127.6 J g-1 and 92-99% efficiency after 50 heating-cooling cycles, which, together with the reinforcing properties of GO and the compatibility of CSH in cement-based matrixes, makes the composite a sustainable PCM for thermal energy storage in building constructions.
KW - calcium silicate hydrate
KW - graphene oxide
KW - phase change materials
KW - sandwich-like composites
KW - thermal energy storage
UR - http://www.scopus.com/inward/record.url?scp=85122732087&partnerID=8YFLogxK
U2 - 10.1021/acsaem.1c03356
DO - 10.1021/acsaem.1c03356
M3 - Article
AN - SCOPUS:85122732087
SN - 2574-0962
VL - 5
SP - 958
EP - 969
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 1
ER -