Consolidation of functionalized graphene at ambient temperature via mechano-chemistry

Author(s):Show less -

Kabbani, Mohamad A. ^[1] ; Kochat, Vidya ^[1] ; Bhowmick, Sanjit ^[2] ; Soto, Matias ^[1] ; Som, Anirban ^{[3, 4]} ; Krishnadas, K. R. ^{[3, 4]} ; Woellner, Cristiano F. ^{[1, 5, 6]} ; Jaques, Ygor M. ^{[1, 5, 6]} ; Barrera, Enrique V. ^[1] ; Asif, Syed ^[2] ; Vajtai, Robert ^[1] ; Pradeep, Thalappil ^{[3, 4]} ; Galvao, Douglas S. ^{[5, 6]} ; Kabbani, Ahmad T. ^[7] ; Tiwary, Chandra Sekhar ^{[1, 8]} ; Ajayan, Pulickel M. ^[1]

Affiliation

^[1] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 - USA

^[2] Bruker Nano Surfaces, Minneapolis, MN 55344 - USA

^[3] Indian Inst Technol Madras, Dept Chem, DST Unit Nanosci, Madras 600036, Tamil Nadu - India

^[4] Indian Inst Technol Madras, Dept Chem, Themat Unit Excellence, Madras 600036, Tamil Nadu - India

^[5] Univ Campinas UNICAMP, Dept Appl Phys, BR-13083859 Campinas, SP - Brazil

^[6] Univ Estadual Campinas, Ctr Computat Engn & Sci, BR-13083859 Campinas, SP - Brazil

^[7] Lebanese Amer Univ, Dept Nat Sci, POB 13-5053, Beirut - Lebanon

^[8] Indian Inst Technol, Mat Sci & Engn, Gandhinagar 382355 - India

• Document type: Journal article
• Source: Carbon; v. 134, p. 491-499, AUG 2018.
• Web of Science Citations: 8

Abstract

Graphitic solids are typically produced via high temperature and energy consuming processing (e.g. sintering) of carbon particles. Here, we demonstrate the mechano-chemical assembly of functionalized graphene layers into 3D graphitic solids via room temperature and low energy consuming processing. The chemical functional groups on graphene layers are interconnected at room temperature under pressure leading to porous three-dimensional structures with tunable mechanical and electrical properties. The formation of mechano-chemistry induced atomic scale junctions and their impact on mechanical properties of graphene assembled carbon materials are demonstrated through nano-indentation experiments and confirmed using DFT and molecular dynamics simulations. The results show room temperature consolidation routes of graphene layers into bulk carbon solids. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 16/12340-9 - Structural and mechanical properties of carbon-based foams
• Grantee: Cristiano Francisco Woellner
• Support type: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 16/12341-5 - Effect of Contaminants on Wettability Properties of 2D Materials
• Grantee: Ygor Morais Jaques
• Support type: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 13/08293-7 - CCES - Center for Computational Engineering and Sciences
• Grantee: Munir Salomao Skaf
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC