Vinicius Gonçales

Vinicius Gonçales

Vinicius Gonçales

Lecturer

Contact details

Phone: (02) 9385 4660
Email: v.goncales@unsw.edu.au

Office

Room 126

Dalton Building, F12

UNSW, Kensington 2052

Biographical Details

BSc-Chemistry (2002-2005), PhD in Science (2006-2011) and Postdoctoral Fellow (2012-2014), University of São Paulo. Postdoctoral Fellow (2015-2016) and Lecturer (2017-current), University of New South Wales. Position linked with the ARC Australian Laureate Fellowship attributed to Scientia Prof. Justin Gooding.

Research Interests

Light-activated electrochemistry on silicon based devices:

   The development of (bio)sensors and biologically active surfaces based on silicon may present commercial advantages over similar systems in which metallic based surfaces are applied. Silicon presents a well-established technology for low-cost bulk production and the electronic properties of silicon can be tuned according to dopant type and concentration. The utilization of silicon at this field also opens perspective for aqueous based electrochemical (bio)sensors rival with optical devices on matching the density of sensing elements in an array. This is possible because light can be used to form transient and spatially confined electrical connections to surfaces based on semiconductor materials. This phenomenon, named “light-activated electrochemistry”, allows us to consider devices in which DC currents can flow across the electrode interface only at the illuminated spots. Consequently, electrochemistry is blocked on the portion of the surface that remains in the dark, as there are insufficient charge carriers available for electron transfer. I am part of a team of researchers linked to Scientia Prof. Justin Gooding and Dr. Simone Ciampi (Curtin University) that have been exploring both fundamental and practical aspects of this field.

Selected Publications

Please refer to Google Scholar for the complete list.

  • V.R. Gonçales, Y. Wu, B. Gupta, S.G. Parker, Y. Yang, S. Ciampi, R. Tilley, J.J. Gooding. Stability of chemically passivated silicon electrodes in aqueous solutions: interplay between bias voltage and hydration of the electrolyte. J. Phys. Chem. C 2016, 120, 15941.
  • L. Zhang, Y.B. Vogel, B.B. Noble, V.R. Gonçales, N. Darwish, A. Le Brun, J.J. Gooding, G.G. Wallace, M.L. Coote, S. Ciampi. TEMPO monolayers on Si(100) electrodes; electrostatic effects by the electrolyte and semiconductor space-charge on the electroactivity of a persistent radical. J. Am. Chem. Soc. 2016, 138, 9611.
  • Y. Wu, M.B. Kashi, Y. Yang, V.R. Gonçales, R.D. Tilley, J.J. Gooding. Light activated electrochemistry on alkyne terminated Si(100) surface with physically adsorbed redox probes. Electrochim. Acta 2016, 213, 540.
  • M.B. Kashi, Y. Wu, V.R. Gonçales, M.H. Choudhury, S. Ciampi, J.J Gooding. Electrochemical restoration and stability of alkyne-terminated Si(100) electrodes using AuNPs. Electrochem. Commun. 2016, 70, 28.
  • M.H. Choudhury, S. Ciampi, Y. Yang, R. Tavallaie, Y. Zhu, L. Zarei, V.R. Gonçales, J.J. Gooding. Connecting electrodes with light: one wire, many electrodes. Chem. Sci. 2015, 6, 6769.
  • V.R. Gonçales, R.N.P. Colombo, M. Minadeo, El Matsubara, J.M. Rosolen, S.I. Córdoba de Torresi. Three-dimensional graphene/carbon nanotubes hybrid composites for exploring interaction between glucose oxidase and carbon based electrodes. J. Electroanal. Chem. 2016, 775, 235.
  • R.N.P. Colombo, D.F.S. Petri, S.I. Córdoba de Torresi, V.R. Gonçales. Porous polymeric templates on ITO prepared by Breath Figure method for gold electrodeposition. Electrochim. Acta 2015, 158, 187.
  • V.R. Gonçales, M.H. Gaitán, A.O.P. Bragatto, GJ.A.A. Soler-Illia, L.M. Baraldo, S.I. Córdoba de Torresi. Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis. J. Electroanal. Chem. 2013, 706, 48.
  • V.R. Gonçales, E.Y. Matsubara, J.M. Rosolen, S.I. Córdoba de Torresi. Micro/nanostructured carbon composite modified with a hybrid redox mediator and enzymes as a glucose biosensor. Carbon 2011, 49, 3039.
  • M. Gaitán, V.R. Gonçales, G.J.A.A. Soler-Illia, L.M. Baraldo, S.I. Córdoba de Torresi. Structure effects of self-assembled Prussian blue confined in highly organized mesoporous TiO2 on the electrocatalytic properties towards H2O2 detection. Biosen. Bioelectron. 2010, 26, 890.