Invited lectures:

• “Graphene membranes for fuel cells”-TEDx, Durham University, Durham, UK, 11th March 2017.  (Video Link) 
• ​​“Knowledge from pencil trace-power of graphene”-TEDx, Edinburgh Napier University, Edinburgh, UK, 9th April 2017.
• “Sustainable energy using graphene”-TEDx, SOAS, University of London, London, UK, 2nd March 2017. (Video Link)
• “Towards sustainable energy using graphene”-Pechakucha, Young Malaysian Engineers’ society, Manchester, UK, 18th Feb 2017.​

In Sao Pauo University, Brazil.

In San Francisco, USA (223rd ECS Meeting).

TEDx Durham University

Conference presentations:

• Stuart M. Holmes, Prabhuraj, “Role of Graphene and graphene oxide in low temperature fuel cells for enhanced performance”-231st Electrochemical Society (ECS) Meeting, Electrochemical Society, New Orleans, Louisiana, USA, 28th May -02nd June 2017.
• Prabhuraj, Stuart M. Holmes, “2D materials significantly enhancing fuel cell performance”-Manchester Energy PhD conference, University of Manchester, Manchester, UK, 3rd -4th April 2017.
• Prabhuraj, Stuart M. Holmes, “2D materials for energy delivery and related sustainability applications”-Composites @ Manchester - 2nd research workshop, University of Manchester, Manchester, UK, 3rd Feb 2017.
• ​​Prabhuraj, Stuart M. Holmes, “Engineering engine room of methanol fuel cells using graphene”-CEAS student seminar, University of Manchester, manchester, UK, 23rd Nov 2016.​
• Stuart M. Holmes, Prabhuraj, “Graphene and graphene oxide in low temperature fuel cells for enhanced performance”-229th Electrochemical Society (ECS) Meeting, Electrochemical Society, San Diego, California, USA, 29th May -02nd June 2016.
• Stuart M. Holmes, Prabhuraj, Hish David, Matthew Harrison, Sirhan Al-Batty, Irfan Jahangir, “Graphene in low temperature fuel cells for enhanced performance”-65th Canadian Chemical Engineering Conference, Calgary, Canada, 4th-7th October 2015.​

• (Poster): Prabhuraj, Isil Gurten Inal, Zeki Aktas, Stuart M. Holmes, “Activated carbon prepared from waste tea as anode gas diffusion layer in DMFC systems”-12th International Conference on Materials Chemistry (MC12), University of York, York, UK, 23th-27th July 2015.
• (Poster): Isil Gurten Inal, Prabhuraj, Anthony Banford, Stuart Holmes , Zeki Aktas, “Evaluation of the use of tomato plant and waste tea based activated carbons as electrode materials for supercapacitors” -12th International Conference on Materials Chemistry (MC12), University of York, York, UK. 23-27 July 2015.
• Prabhuraj, Stuart M. Holmes, “Materials for direct methanol fuel cells (DMFCs)”-Great Western Electrochemistry Meeting, University of Bath, Bath, UK, 22nd June 2015. 
• Prabhuraj, Isil Gurten Inal, Zeki Aktas, Stuart Holmes"A biomass based activated carbon as the cathode gas diffusion layer in low temperature polymer electrolyte fuel cells"  -Fuel Cell and Hydrogen Technical Conference, Millennium Point, Birmingham, UK, 19th-21th May 2015.
• (Poster): Prabhuraj, Stuart Holmes “Graphene oxide (GO) as a membrane material in Direct Methanol Fuel Cells (DMFCs)- Possibilities and Review” – PGR conference 2014, University of Manchester, Manchester,11th June 2014.
• (Poster): Prabhuraj, Stuart Holmes “Graphene oxide (GO) as a membrane material in Direct Methanol Fuel Cells (DMFCs)- Possibilities and Review ” – Chem Eng Day 2014, University of Manchester, Manchester,  7-8th April 2014.
• Workshop on Electrochemistry -“Sao Paulo School of Advanced science on Electrochemistry, Energy Conversion and Storage (SPASECS)”- University of Sao Paulo, Sao Paulo, Brazil, 7th-14th December 2013. 
• (Poster): Prabhuraj, Stuart Holmes “Graphene in Direct Methanol Fuel Cells (DMFCs)- Present and the future” – PGR conference 2013, University of Manchester, Manchester,11th June 2013.
• (Poster): Prabhuraj, Stuart Holmes “Role of Graphene in Direct Methanol Fuel Cells (DMFCs)- Present and the Future” – Chem Eng Day 2013, Imperial College London, London, 23rd-26th March 2013.
• ​(Poster): ​Prabhuraj, Stuart M. Holmes, “A view on Direct Methanol Fuel cells (DMFCs) and benefits of applying graphene in DMFCs” – Royal Academy of Engineering conference, Manchester, UK, 5th March 2013 (Third Prize).
• Prabhuraj, “Electrochemical non-enzymatic glucose sensor using Poly(2,5 Dimethoxy Aniline) as a polymer support” has been selected for presentation in '9th European Congress of Chemical Engineering' (ECCE 9), The Hague, Netherlands.​
• ​(Poster): ​​Prabhuraj, “Fuel Cells – A greener solution to energy and environmental crisis” (March 2011) in ‘International Symposium on Energy Materials’ (ISEM 2011) organized by Central Glass and Ceramic Research Institute (CGCRI), Kolkata, West Bengal, INDIA -Received best poster prize.
• ​Prabhuraj, “Effect of strain rate on the behaviour of stainless steels in chloride medium“ (Sep-2010) in ‘Fifteenth National Congress on Corrosion Control (NCCI)‘held at Chennai, Tamilnadu, INDIA.​