TY - JOUR
T1 - Enhanced multifunctional properties of graphene nanocomposites with nacre-like structures
AU - Yan, Liang
AU - Chang, Ya Nan
AU - Yin, Wenyan
AU - Tian, Gan
AU - Zhou, Liangjun
AU - Hu, Zhongbo
AU - Xing, Gengmei
AU - Gu, Zhanjun
AU - Zhao, Yuliang
N1 - Publisher Copyright:
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - Filler of inorganic nanocrystals is an efficient way to greatly enhance the functional performance of graphene-based nanocomposites or to create new properties of graphene materials. However, it remains a challenge because the fabrication of such nanocomposites may decline or even lose the functional properties of the constituents during the hybridization process. In this work, a new class of multifunctional nanocomposites incorporating Fe3O4 magnetic nanocrystals (MNCs) and NaYF4:Yb,Er upconversion nanocrystals (UCNCs) within graphene oxide (GO) matrix are created based on the co-assembly of the preformed nanocrystals and graphene. These new graphene nanocomposites distinctively exhibit both the favorable photoluminescence of UCNC and magnetic property of MNC building blocks. Moreover, the graphene nanocomposites exhibit enhanced mechanical properties, good biocompatibility, as well as high electrical conductivity after thermal annealing. Compared with the pure GO film, the maximum tensile strength (102.8 MPa) and modulus (10.9 GPa) of the graphene nanocomposite increase by ca. 119 and 160%, respectively. The luminescent, magnetic, and mechanical properties of the nanocomposites can be fine-tuned by changing the graphene-to-nanocrystal ratios. These results enable to fabricate multi-targeting and multi-treating tools and lighting devices. Multifunctional graphene nanocomposites are prepared by integrating magnetic and lanthanide-doped luminescent nanocrystals into the GO matrix and then vacuum filtration. The obtained nanocomposites with a nacre-like structure have the GO flexibility and enhanced multifunctionality, including luminescent, magnetical, and mechanical properties. In particular, compared with the pure GO film, the maximum tensile strength (102.8 MPa) and modulus (10.9 GPa) of the nanocomposite increase by ca. 119 and 160%, respectively.
AB - Filler of inorganic nanocrystals is an efficient way to greatly enhance the functional performance of graphene-based nanocomposites or to create new properties of graphene materials. However, it remains a challenge because the fabrication of such nanocomposites may decline or even lose the functional properties of the constituents during the hybridization process. In this work, a new class of multifunctional nanocomposites incorporating Fe3O4 magnetic nanocrystals (MNCs) and NaYF4:Yb,Er upconversion nanocrystals (UCNCs) within graphene oxide (GO) matrix are created based on the co-assembly of the preformed nanocrystals and graphene. These new graphene nanocomposites distinctively exhibit both the favorable photoluminescence of UCNC and magnetic property of MNC building blocks. Moreover, the graphene nanocomposites exhibit enhanced mechanical properties, good biocompatibility, as well as high electrical conductivity after thermal annealing. Compared with the pure GO film, the maximum tensile strength (102.8 MPa) and modulus (10.9 GPa) of the graphene nanocomposite increase by ca. 119 and 160%, respectively. The luminescent, magnetic, and mechanical properties of the nanocomposites can be fine-tuned by changing the graphene-to-nanocrystal ratios. These results enable to fabricate multi-targeting and multi-treating tools and lighting devices. Multifunctional graphene nanocomposites are prepared by integrating magnetic and lanthanide-doped luminescent nanocrystals into the GO matrix and then vacuum filtration. The obtained nanocomposites with a nacre-like structure have the GO flexibility and enhanced multifunctionality, including luminescent, magnetical, and mechanical properties. In particular, compared with the pure GO film, the maximum tensile strength (102.8 MPa) and modulus (10.9 GPa) of the nanocomposite increase by ca. 119 and 160%, respectively.
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U2 - 10.1002/adem.201400237
DO - 10.1002/adem.201400237
M3 - Article
AN - SCOPUS:84926161620
SN - 1438-1656
VL - 17
SP - 523
EP - 531
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
IS - 4
ER -