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Size dependence of photocatalytic oxidation reactions of Rh nanoparticles dispersed on （Ga1-xZnx）（N1-xOx） support

Yi Zhang D. A. J. Michel Ligthart Peng Liu Lu Gao Tiny M. W. G. M. Verhoeven Emiel J. M. Hensen

催化学报, 2014, Vol.35 (12), p.1944-1954 [Periódico revisado por pares]

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  • Título:
    Size dependence of photocatalytic oxidation reactions of Rh nanoparticles dispersed on （Ga1-xZnx）（N1-xOx） support
  • Autor: Yi Zhang D. A. J. Michel Ligthart Peng Liu Lu Gao Tiny M. W. G. M. Verhoeven Emiel J. M. Hensen
  • Assuntos: CO氧化 ; 乙烯基吡咯烷酮 ; 光催化氧化反应 ; 分散 ; 尺寸 ; 氧氮化物 ; 纳米催化剂 ; 纳米粒子
  • É parte de: 催化学报, 2014, Vol.35 (12), p.1944-1954
  • Notas: Oxynitride Rhodium nanoparticle Water splitting Carbon monoxide oxidation Hydrogen oxidation
    Mixed Ga-Zn oxynitrides were synthesized using coprecipitation, wet‐precipitation, and sol‐id‐solution methods. The oxynitrides were used as supports for Rh nanoparticle catalysts in photo‐catalytic water splitting, CO oxidation, and H2 oxidation. Mixed Ga-Zn oxynitrides produced by wet precipitation and nitridation had good visible‐light‐absorption properties and high surface areas, so they were used to support uniformly sized poly（vinylpyrrolidone）‐stabilized Rh nanoparticles. The nanoparticle size range was 2-9 nm. These catalysts had negligible activity in photocatalytic H2 production by water splitting with methanol as a sacrificial agent. Other mixed Ga-Zn oxynitrides were also inactive. A reference sample provided by Domen also showed very low activity. The in‐fluence of particle size on Rh‐catalyzed oxidation of CO and H2 was investigated. For CO oxidation, the activities of small particles were higher for part
  • Descrição: Mixed Ga-Zn oxynitrides were synthesized using coprecipitation, wet‐precipitation, and sol‐id‐solution methods. The oxynitrides were used as supports for Rh nanoparticle catalysts in photo‐catalytic water splitting, CO oxidation, and H2 oxidation. Mixed Ga-Zn oxynitrides produced by wet precipitation and nitridation had good visible‐light‐absorption properties and high surface areas, so they were used to support uniformly sized poly（vinylpyrrolidone）‐stabilized Rh nanoparticles. The nanoparticle size range was 2-9 nm. These catalysts had negligible activity in photocatalytic H2 production by water splitting with methanol as a sacrificial agent. Other mixed Ga-Zn oxynitrides were also inactive. A reference sample provided by Domen also showed very low activity. The in‐fluence of particle size on Rh‐catalyzed oxidation of CO and H2 was investigated. For CO oxidation, the activities of small particles were higher for particles with higher Rh oxidation degrees. The op‐posite holds for H2 oxidation.
  • Idioma: Chinês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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