Ceramic composite coatings of alumina (Al2O3), alumina-micro-ceria (µ-CeO2) and alumina-micro-ceria-multiwalled carbon nanotubes (MWNTs) were processed using plasma spraying. X-ray diffraction analysis reveals evolution of new phases-namely, γ-alumina and non-stoichiometric phases of alumina. Reinforcement of 3 wt% MWNTs has been shown to restrict the degeneration of ceria and synergistically conserve the γ-phase. The catalytic ability of alumina-micro-ceria-MWNT has been confirmed from the nitric oxide (NO) oxidation reaction. An observed 25% conversion ability arises at 350°C in a 10% oxygen (O2) environment, which indicates that ceria inclusion increases the oxidation of nitric oxide. Thus, the alumina-micro-ceria-MWNT composite can serve as a potential catalyst for nitric oxide conversion. © 2017 ICE Publishing: All rights reserved.

Amitava Banerjee

Department of Metallurgical & Materials Engineering

IIT Jodhpur

N Mahato

B Bhaduri

N Balaji

A Siddiqui R

S Aruna T R

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Nanomaterials and Energy

Catalytic effects of CeO2 and carbon nanotube addition in plasma-sprayed Al2O3

Journal	Nanomaterials and Energy
Publisher	ICE Publishing
ISSN	20459831
Open Access	No