Enhanced Catalytic Activity of Nickel-Gold Nanoprisms in Hydrodesulfurization and Reduction of 4-Nitrophenol and Organic Dyes

Strategic Insights -

Research conducted at the Institute of Advanced Studies Basic Science has led to the discovery of nickel-gold nanoprisms with enhanced catalytic activity in hydrodesulfurization and reduction of 4-nitrophenol and organic dyes. The researchers found that the presence of gold at the ppm level in the catalyst improves its performance, and the nickel-gold nanoprisms exhibit higher activity than nickel nanoprisms and homogeneous gold. The study's results demonstrate the potential of these nanoprisms in efficiently removing sulfur-containing organic pollutants from fuel liquids.

Key Takeaways:

  • The nickel-gold nanoprisms were prepared by adding a low amount of gold (0.16 wt%) to the nickel nano-prism.
  • The catalyst's physicochemical properties and surface composition were characterized using various techniques.
  • The nickel-gold nanoprisms demonstrated high catalytic activity in hydrodesulfurization of thiophene derivatives, 4-nitrophenol, and organic dyes.
  • The presence of gold at the ppm level distinctly improves the catalytic performance of the catalyst.
  • The nickel-gold nanoprisms exhibit higher activity than nickel nanoprisms and homogeneous gold in reducing 4-nitrophenol and organic dyes.
  • The study found that the nickel-gold nanoprisms efficiently transformed and removed three major sulfur-containing organic pollutants from fuel liquids.
  • The prism-like structure of the recycled catalyst remained mostly stable during the reactions.
  • The research has been peer-reviewed and published in Inorganic Chemistry Communications.

Statistics:

  • 0.16 wt% gold was added to the nickel nano-prism to prepare the nickel-gold nanoprisms.
  • 0.53 ppm of Au was used to achieve quantitative reduction and conversion of 4-NP.
  • 16 ppm of Au was used with the NiAu NPr catalyst to efficiently transform and remove sulfur-containing organic pollutants.
  • 3-methylthiophene, dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) were transformed and removed efficiently using the nickel-gold nanoprisms.
  • The prism-like structure of the recycled catalyst remained mostly stable during 34% of the reactions.

Sources:

  • NewsRx. Data on Nanoprisms Reported by Researchers at Institute of Advanced Studies Basic Science (Enhanced Catalytic Activity of Nickel-gold Nanoprisms In Hydrodesulfurization and Reduction of 4-nitrophenol and Organic Dyes). Nanotechnology Weekly. July 7, 2025; p 700.
  • Enhanced Catalytic Activity of Nickel-gold Nanoprisms In Hydrodesulfurization and Reduction of 4-nitrophenol and Organic Dyes. Inorganic Chemistry Communications, 2025;177.