Role of graphene in enhancing the mechanical properties of TiO2/graphene heterostructures

被引:26
作者
Cao, Changhong [1 ]
Mukherjee, Sankha [2 ]
Liu, Jian [3 ]
Wang, Biqiong [3 ]
Amirmaleki, Maedeh [1 ]
Lu, Zhuole [2 ]
Howe, Jane Y. [4 ]
Perovic, Doug [2 ]
Sun, Xueliang [3 ]
Singh, Chandra Veer [1 ,2 ]
Sun, Yu [1 ]
Filleter, Tobin [1 ]
机构
[1] Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada
[2] Univ Toronto, Dept Mat Sci & Engn, 184 Coll St, Toronto, ON M5S 3E4, Canada
[3] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada
[4] Hitachi High Technol Canada Inc, Toronto, ON M9W 6A4, Canada
基金
加拿大创新基金会; 加拿大自然科学与工程研究理事会;
关键词
ATOMIC LAYER DEPOSITION; TIO2; THIN-FILM; ELASTIC PROPERTIES; NANOSHEETS; SUPERCAPACITORS; CRYSTALLINITY; MORPHOLOGY; STRENGTH; MODULUS; OXIDE;
D O I
10.1039/c7nr03049e
中图分类号
O6 [化学];
学科分类号
070301 [无机化学];
摘要
Graphene has been integrated in many heterogeneous structures in order to take advantage of its superior mechanical properties. However, the complex mechanical response of heterogeneous films incorporating graphene is not well understood. Here, we studied the mechanical behavior of atomic layer deposition (ALD) synthesized TiO2/graphene, as a representative building block of a typical composite, to understand the mechanical behavior of heterostructures using an experiment-computational approach. The inclusion of graphene was found to significantly enhance the Young's modulus of TiO2/graphene hetero-films for films below a critical thickness of 3 nm, beyond which the Young's modulus approaches that of pure TiO2 film. A rule-of-mixtures was found to reasonably estimate the modulus of the TiO2/graphene hetero-film. Experimentally, these hetero-films were observed to fail via brittle fracture. Complimentary density functional theory and finite element modeling demonstrates strong adhesion at the graphene TiO2 interface and that graphene serves as a reinforcement, providing the hetero-film with an ability to sustain significantly high stresses at the point of failure initiation. The results and methodology described herein can contribute to the rational design of strong and reliable ultrathin hetero-films for versatile applications.
引用
收藏
页码:11678 / 11684
页数:7
相关论文
共 38 条
[1]
Alger M.S. M., 1996, Polymer science dictionary
[2]
Superhydrophilic Graphene-Loaded TiO2 Thin Film for Self-Cleaning Applications [J].
Anandan, Srinivasan ;
Rao, Tata Narasinga ;
Sathish, Marappan ;
Rangappa, Dinesh ;
Honma, Itaru ;
Miyauchi, Masahiro .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (01) :207-212
[3]
Atomic layer deposition of amorphous TiO2 on graphene as an anode for Li-ion batteries [J].
Ban, Chunmei ;
Xie, Ming ;
Sun, Xiang ;
Travis, Jonathan J. ;
Wang, Gongkai ;
Sun, Hongtao ;
Dillon, Anne C. ;
Lian, Jie ;
George, Steven M. .
NANOTECHNOLOGY, 2013, 24 (42)
[4]
Young modulus and Poisson ratio measurements of TiO2 thin films deposited with Atomic Layer Deposition [J].
Borgese, L. ;
Gelfi, M. ;
Bontempi, E. ;
Goudeau, P. ;
Geandier, G. ;
Thiaudiere, D. ;
Depero, L. E. .
SURFACE & COATINGS TECHNOLOGY, 2012, 206 (8-9) :2459-2463
[5]
The interactions between TiO2 and graphene with surface inhomogeneity determined using density functional theory [J].
Bukowski, Brandon ;
Deskins, N. Aaron .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2015, 17 (44) :29734-29746
[6]
High strength measurement of monolayer graphene oxide [J].
Cao, Changhong ;
Daly, Matthew ;
Singh, Chandra Veer ;
Sun, Yu ;
Filleter, Tobin .
CARBON, 2015, 81 :497-504
[7]
Elastic Properties of Freely Suspended MoS2 Nanosheets [J].
Castellanos-Gomez, Andres ;
Poot, Menno ;
Steele, Gary A. ;
van der Zant, Herre S. J. ;
Agrait, Nicolas ;
Rubio-Bollinger, Gabino .
ADVANCED MATERIALS, 2012, 24 (06) :772-775
[8]
Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling [J].
Chen, Chaoji ;
Wen, Yanwei ;
Hu, Xianluo ;
Ji, Xiulei ;
Yan, Mengyu ;
Mai, Liqiang ;
Hu, Pei ;
Shan, Bin ;
Huang, Yunhui .
NATURE COMMUNICATIONS, 2015, 6
[9]
Controlled charge trapping by molybdenum disulphide and graphene in ultrathin heterostructured memory devices [J].
Choi, Min Sup ;
Lee, Gwan-Hyoung ;
Yu, Young-Jun ;
Lee, Dae-Yeong ;
Lee, Seung Hwan ;
Kim, Philip ;
Hone, James ;
Yoo, Won Jong .
NATURE COMMUNICATIONS, 2013, 4
[10]
Raman spectrum of graphene and graphene layers [J].
Ferrari, A. C. ;
Meyer, J. C. ;
Scardaci, V. ;
Casiraghi, C. ;
Lazzeri, M. ;
Mauri, F. ;
Piscanec, S. ;
Jiang, D. ;
Novoselov, K. S. ;
Roth, S. ;
Geim, A. K. .
PHYSICAL REVIEW LETTERS, 2006, 97 (18)