Molybdenum disulphide or MoS2 is regarded as a standard solid lubricant and small nanoparticles of MOS2 have a strong potential to act as catalysts for the creation of sulphur free fuels. Technical University Dresden researchers have found out that particle size tends to influence the chemical and physical properties of MOS2 and not only the size but also the shape has an effect on the catalytic potential of fuel desulphurization. With the particle size getting smaller, the catalytic potential has been found out to increase and this effect has been connected with the specific structure along triangular nanoplatelets edges. When compared with the semi conducting bulk, the edges of MoS2 have been found out to be electronically conducting and hence it causes the decomposition of sulphur containing impurities. Researchers have found out that the desulphurisation of fuels is not just related to the smallest MoS2 particles as electronically conducting catalytic reaction sites can also occur in the case of large particles. It can be hence concluded that the 3D structure and particle size tend to affect the physical and chemical properties of MoS2 nanoparticles.