title: Halloysite-nanotubes supported FeNi alloy nanoparticles for catalytic decomposition of toxic phosphine gas into yellow phosphorus and hydrogen.
abstract: The FeNi alloy nanoparticles (FeNi and BFeNi) supported on natural halloysite nanotubes (HNTs) were prepared for catalytic decomposition of toxic phosphine (PH₃) to yellow phosphorus and hydrogen. The Fourier transform infrared spectroscopy, X-ray diffraction, inductively coupled plasma, scanning electron microscope, and hydrogen temperature-programmed reduction tests were carried out to characterize the physicochemical properties of HNTs and the prepared nano-catalysts. Nearly 100% PH₃ was decomposed into yellow phosphorus and hydrogen at 420 °C with prepared FeNi/HNTs catalysts. Metallic Ni and Fe₃O₄ could be the catalytic active sites in FeNi/HNTs for PH₃ decomposition under the low temperature. The boron (B) additives decrease the catalytic activity of FeNi/HNTs for PH₃ decomposition due to the formation of the spinal NiFe₂O₄ and Fe₂B which replace the active Fe₃O₄ and metallic Ni in catalysts. The developed FeNi/HNTs are low-cost and effective catalysts for air-pollution control and recycle of the hazardous waste PH₃ gas in industry.
authors.affiliation: College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
authors.forename: Xuejiao
authors.initials: X
authors.lastname: Tang
authors.forename: Lili
authors.initials: L
authors.lastname: Li
authors.forename: Boxiong
authors.initials: B
authors.lastname: Shen
authors.forename: Chengjun
authors.initials: C
authors.lastname: Wang
mesh_terms: D000497:Alloys / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry; D001895:Boron / Q000737:chemistry; D002384:Catalysis; D000077215:Clay; D052203:Ferrosoferric Oxide / Q000737:chemistry; D005740:Gases / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010720:Phosphines / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry; D013696:Temperature
chemical_list: D000497:Alloys; D000538:Aluminum Silicates; D005740:Gases; D010720:Phosphines; D010758:Phosphorus; D009532:Nickel; D006859:Hydrogen; C044646:phosphine; D001895:Boron; D000077215:Clay; D052203:Ferrosoferric Oxide