Reclamation of diesel oil from sea water using magnetic Au/Fe2O3 nanocomposites prepared by chemical precipitation

Bharat Sharma, Ashutosh Sharma, Jung Sik Kim

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1 Scopus citations


The present work investigates an environmental benign method for the separation of diesel from sea water in oil reservoirs using Au/Fe2O3 nanocomposites. The Fe2O3 nanoparticles were decorated with Au by chemical precipitation method to form Au/Fe2O3 nanocomposites. The microstructural characterizations of the Au/Fe2O3 nanocomposite were performed by x-ray diffraction technique, scanning electron microscopy, and transmission electron microscopy. The magnetic measurements were done using a magnetometer. The effect of Au/Fe2O3 dose and Au: Fe2O3 loading were estimated from the removal efficiency and adsorption capacity at different contact times and nanocomposite concentrations. The microstructural results showed that Fe2O3 nanoparticles were 20-30 nm in size and were uniformly distributed over the Au layer. It was observed that nanocomposite shows higher efficiency (98%) at an Au: Fe2O3 ratio of 1:8 with 0.4 g l-1 of water-oil concentration compared to the pure Au adsorbent. The adsorption kinetic studies suggested first and second order pseudo-kinetic models. This separation method using magnetic Au/Fe2O3 can be potential and alternative way of extraction of diesel from sea water.

Original languageEnglish
Article number015047
JournalMaterials Research Express
Issue number1
StatePublished - Jan 2018


  • adsorption
  • diesel
  • efficiency
  • nanocomposite
  • oil
  • water


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