Issue 5, 2012
From the journal:

RSC Advances

Synthesis of CaCO3/graphene composite crystals for ultra-strong structural materials†

Xiluan Wang,a   Hua Bai,a   Yuying Jia,b   Linjie Zhi,b   Liangti Qu,c   Yuxi Xu,a   Chun Lia  and  Gaoquan Shi*a  

* Corresponding authors

a Key Laboratory of Bio-organic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, People's Republic of China
E-mail: gshi@tsinghua.edu.cn
Fax: +86-10-6277-1149
Tel: +86-10-62773743

b National Center for Nanosicence and Technology, Beijing, People's Republic of China

c Department of Chemistry, Beijing Institute of Technology, Beijing, People's Republic of China

Abstract

Composite crystals of calcium carbonate (CaCO3) and graphene with hexagonal plate or ring, dendritic and rhombohedral shapes were synthesized by the hydrothermal reaction of calcium acetate and urea in the presence of graphene oxide (GO) sheets. Their crystal structures were characterized to be vaterite, aragonite and calcite, respectively. In this case, the hydrothermally reduced graphene oxide (rGO) acted as an atom-thick, two-dimensional template for controlling the nucleation and growth of the CaCO3 crystals. The vaterite CaCO3 composite crystals (VCCs) were used as a filler of poly(vinyl alcohol) (PVA) to form a composite with a nacre-like structure. The Young's modulus and tensile strength of PVA/45 wt% VCC were tested to be 34.1 ± 2.5 GPa and 165 ± 6 MPa, respectively.

Graphical abstract: Synthesis of CaCO3/graphene composite crystals for ultra-strong structural materials

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Article information

DOI
https://doi.org/10.1039/C2RA00765G
Article type
Paper
Submitted
20 Sep 2011
Accepted
03 Dec 2011
First published
19 Jan 2012

RSC Adv., 2012,2, 2154-2160

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Synthesis of CaCO3/graphene composite crystals for ultra-strong structural materials

X. Wang, H. Bai, Y. Jia, L. Zhi, L. Qu, Y. Xu, C. Li and G. Shi, RSC Adv., 2012, 2, 2154 DOI: 10.1039/C2RA00765G

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