Consolidation of functionalized graphene at ambient temperature via mechano-chemistry

Autor(es):Mostrar menos -

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Carbon; v. 134, p. 491-499, AUG 2018.
• Citações Web of Science: 7

Resumo

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)

• Processo FAPESP: 16/12340-9 - Propriedades estruturais e mecânicas de espumas baseadas no carbono
• Beneficiário: Cristiano Francisco Woellner
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 16/12341-5 - Efeitos de contaminantes na molhabilidade de materiais bi-dimensionais
• Beneficiário: Ygor Morais Jaques
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
• Beneficiário: Munir Salomao Skaf
• Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs