Blar i NTNU Open på forfatter "Muthuswamy, Navaneethan"
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Active sites for the oxygen reduction reaction in nitrogen-doped carbon nanofibers
Buan, Marthe Emelie Melandsø; Cognigni, Andrea; Walmsley, John; Muthuswamy, Navaneethan; Rønning, Magnus (Journal article; Peer reviewed, 2019)Understanding the role of iron and the nature of the active sites in nitrogen-doped carbon nanomaterials is vital for their future application as oxygen reduction electrocatalysts in fuel cells. In this paper, porphyrin-like ... -
Doped carbon nanostructures as metal-free catalysts for oxidative dehydrogenation of light alkanes
Jenssen, Kaia Andersson (Master thesis, 2014)Catalytic reactions are often carried out on various supported metals, these usually being noble metals or metal oxides. Even though metal based catalysts plays a major role in today s industrial processes, they still have ... -
Evaluation of ORR active sites in nitrogen-doped carbon nanofibers by KOH post treatment
Muthuswamy, Navaneethan; Buan, Marthe Emelie Melandsø; Walmsley, John; Rønning, Magnus (Journal article; Peer reviewed, 2018)Oxygen reduction on N-doped carbon nanomaterials is believed to take place at either N-centered active sites (C-Nx) or Fe-centered active sites (Fe-Nx). In this work the origin of the oxygen reduction on nitrogen-doped ... -
Nitrogen-doped carbon nanofiber catalyst for ORR in PEM fuel cell stack: Performance, durability and market application aspects
Bokach, Dmitry; ten Hoopen, Sander; Muthuswamy, Navaneethan; Buan, Marthe Emelie Melandsø; Rønning, Magnus (Journal article; Peer reviewed, 2016)A noble metal-free catalyst based on N-doped carbon nanofibers supported on graphite (N-CNF1 ) was employed for the oxygen reduction at the cathode of a Nafion PEMFC with a commercial Pt/C anode. Obtained performance in ... -
Nitrogen-Doped Carbon Nanofibers as Pt-Free Catalyst in the Oxygen Reduction Reaction - A study of iron nanoparticles as N-CNF catalyst on different supports
Barsnes, Anne Helene (Master thesis, 2015)A new approach was tested as nitrogen-doped carbon nanofibers (N-CNFs) were synthesized by using uniformly sized iron nanoparticles (FeNPs) on two different support as their growth catalyst. The N-CNFs are designed as a ... -
Nitrogen-doped Carbon Nanofibers for the Oxygen Reduction Reaction: Importance of the Iron Growth Catalyst Phase
Buan, Marthe Emelie Melandsø; Muthuswamy, Navaneethan; Walmsley, John; Chen, De; Rønning, Magnus (Journal article; Peer reviewed, 2017)A systematic evaluation of the oxygen reduction reaction (ORR) on nitrogen-doped carbon nanofibers (N-CNFs) has been performed by tuning the properties of the N-CNFs by using chemical vapor deposition. Analysis of the ... -
Nitrogen-doped carbon nanofibers on expanded graphite as oxygen reduction electrocatalysts
Buan, Marthe Emelie Melandsø; Muthuswamy, Navaneethan; Walmsley, John; Chen, De; Rønning, Magnus (Journal article; Peer reviewed, 2016)A single-step chemical vapor deposition method using simple gaseous precursors was employed to grow nitrogen-doped carbon nanofibers from Fe and Ni particles on the surface of expanded graphite (N-CNF/EG). Due to the high ... -
Platinum based Catalysts for Methanol Fuel Cells: Metal Clusters and Carbon Supports
Muthuswamy, Navaneethan (Doktoravhandlinger ved NTNU, 1503-8181; 2011:335, Doctoral thesis, 2011)In this thesis two objectives are pursued in parallel. The first is to reduce the Pt loading and thereby reducing the cost of the catalysts for anode application in direct methanol fuel cell. The second is to tune the ...