Events Calendar

Graphene-based composite - Dr. Tanvir Qureshi, UofT

Date:
Thursday, April 26, 2018
Time:
1:30 pm - 2:25 pm
Location:
Physics & Astronomy Building (PAB)
Room: 100
Cost:
Free

Department of Physics and Astronomy

PHYSICS & ASTRONOMY COLLOQUIUM

Dr. Tanvir Qureshi

Department of Civil Engineering
University of Toronto

“Graphene-based composite: Future in Civil Engineering application”

ABSTRACT

Graphene is a recently re-invented wonder nanomaterial with extraordinary physicochemical properties has excellent potential for developing composites in Civil Engineering applications. Graphene is comprised of tightly-knit carbon atoms arranged into a one atom thick 2D sheet. It is about 200 times stronger than steel, flexible and even superconductive. Bulk quantities of graphene materials can be produced through chemical oxidation and exfoliation of graphite, and there are three common forms—graphene oxide (GO), reduced graphene oxide, and pure graphene. So far, two significant potentials in Civil Engineering are graphene-based cement composite materials and graphene-based filtration composites for water purification. In cement composite, graphene materials can reinforce capillary and gel pores and creates interlocking between cement hydration products which improves the overall properties. Recently, a hybrid film was developed based on the graphene oxide/fungal hyphae (GO-FH) interaction. The developed GO-FH bio-nanocomposite material was used for the adsorption of chromium(VI) metal ions from water. In another study, the interfacial behaviour of multilayer GO films was directly investigated via GO-to-GO friction force microscopy, and the interfacial shear strength (ISS) was measured to be 5.3 ± 3.2 MPa. The findings of this study can be useful for engineering topological structures with tunable mechanical properties.

STUDENTS – after the talk, you’re encouraged to meet with the speaker in PAB 141 (Reading room).
COFFEE – coffee and cookies will be available in the 2nd floor Atrium lounge at 1:15 p.m.
CELL PHONES – as a courtesy to the speaker and audience, please set your cellphones to “silent” mode. Thanks!
Host:
Prof. G. Fanchini
Contact:
Jodi Guthrie - Assistant to the Chair
jodi@uwo.ca
519-661-2111 ext.86438
Event Type:


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