We contributed in unraveling the chemical evolution of graphene oxide (GO) upon annealing in the attempt to restore the electrical conductivity. Now building on our understanding of this material we engage collaborations with industrial partners and chemical and mechanical engineers to bring graphene into real applications. We have scaled up the synthesis of graphene oxide in aqueous and organic solvent suspensions to enable fabrication of real scale prototypes. We are developing GO membranes for water filtration and gas separation, new composites for pipeliners, and fabricating new epoxy resins with enhanced thermal, mechanical and electrical properties for airspace coatings.

Relevant Publications

• Bagri A, Mattevi C, Acik M, Chabal YJ, Chhowalla M, Shenoy VB, 2010, Structural evolution during the reduction of chemically derived graphene oxide, Nature Chemistry, Vol:2, ISSN:1755-4330, Pages:581-587
• Barg S, Perez FM, Ni N, Pereira PDV, Maher RC, Garcia-Tunon E, Eslava S, Agnoli S, Mattevi C, Saiz E, 2014, Mesoscale assembly of chemically modified graphene into complex cellular networks, NATURE COMMUNICATIONS, Vol: 5, ISSN: 2041-17
• Song W, Lischner J, Rocha VG, Qin H, Qi J, Hadden JHL, Mattevi C, Xie F, Riley DJ, 2017, Tuning the Double Layer of Graphene Oxide through Phosphorus Doping for Enhanced Supercapacitance, ACS ENERGY LETTERS, Vol: 2, Pages: 1144-1149, ISSN: 2380-8195
• Olowojoba GB, Kopsidas S, Eslava S, Gutierrez ES, Kinloch AJ, Mattevi C, Rocha VG, Taylor AC, 2017, A facile way to produce epoxy nanocomposites having excellent thermal conductivity with low contents of reduced graphene oxide, JOURNAL OF MATERIALS SCIENCE, Vol: 52, Pages: 7323-7344, ISSN: 0022-2461
• Aba NFD, Chong JY, Wang B, Mattevi C, Li K, 2015, Graphene oxide membranes on ceramic hollow fibers - Microstructural stability and nanofiltration performance, JOURNAL OF MEMBRANE SCIENCE, Vol: 484, Pages: 87-94, ISSN: 0376-7388

Three-dimensional networks of 2D materials have been emerging as a new way of obtaining multifunctional monoliths with a wide range of potential applications from energy storage to bioelectronics.  Their different functions arise from the unique combination of 2D materials inherent properties and the specific architectural order.  The fundamental challenge now is to establish properties-structure relationship by using highly controllable processes to create ordered structures. Our interest encompasses the development of new solutions for the structuring of 2D materials which can give access to nano-sized structures.

Relevant Publications

• Sherrell PC, Mattevi C, 2016, Mesoscale design of multifunctional 3D graphene networks, Materials Today, ISSN: 1369-702
• Pierin G, Grotta C, Colombo P, Mattevi C, 2015, Direct Ink Writing of micrometric SiOC ceramic structures using a preceramic polymer, Journal of the European Ceramic Society, ISSN: 0955-2219

Chemical vapour deposition has seen a recent resurge with the synthesis of graphene on transition metal surfaces. The same technique results to be particularly suited also for the synthesis of group VI-TMDs. Synthesis of wafer-sized films as well as controlled geometries is essential to implement them into nanoelectronic and photonic devices. Our interest overarches graphene and semiconducting two-dimensional materials with the objective to develop methods to grow materials with tailored properties for different device applications. We utilize conventional quartz tubular furnaces and a dedicated bespoke CVD system by VG-Scientia which can host 4-inch wafers as growth substrates.

Relevant Publications

• Kim H, Mattevi C, Calvo MR, Oberg JC, Artiglia L, Agnoli S, Hirjibehedin CF, Chhowalla M, Saiz E, 2012, Activation Energy Paths for Graphene Nucleation and Growth on Cu, ACS NANO, Vol: 6, Pages: 3614-3623, ISSN: 1936-0851
• Mattevi C, Colleaux F, Kim H, Lin Y-H, Park KT, Chhowalla M, Anthopoulos TD, 2012, Solution-processable organic dielectrics for graphene electronics, NANOTECHNOLOGY, Vol: 23, ISSN: 0957-4484
• Amit I, Octon TJ, Townsend NJ, Reale F, Wright CD, Mattevi C, Craciun MF, Russo S, 2017, Role of Charge Traps in the Performance of Atomically Thin Transistors, ADVANCED MATERIALS, Vol: 29, ISSN: 0935-9648

MoS₂/WS₂ Heterojunction for Photoelectrochemical Water Oxidation               

 

 

 

 

 

 

 

Room-temperature growth of colloidal Bi₂Te₃ nanosheets

 

 

 

 

  

 

 Relevant Publications

• Pesci FM, Sokolikova M, Grotta C, Sherrell PC, Reale F, Sharda K, Ni N, Palczynski P, Mattevi C, 2017, MoS2/WS2heterojunction for photoelectrochemical water oxidation, ACS Catalysis, ISSN: 2155-5435
• Sokolikova MS, Sherrell PC, Palczynski P, Bemmer VL, Mattevi C, 2017, Room-temperature growth of colloidal Bi2Te3 nanosheets., Chem Commun (Camb), Vol: 53, Pages: 8026-8029