Carboxylic acid Functionalized Cage-Type Mesoporous Silica FDU-12 as Support for Controlled Synthesis of Platinum Nanoparticles and Their Catalytic Applications

Juti Rani Deka, Canggih Setya Budi, Chien Hua Lin, Diganta Saikia, Yung Chin Yang, Hsien Ming Kao

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Carboxylic acid functionalized 3D cage-type mesoporous silica FDU-12 with high surface area and pore volume was synthesized by a one-pot co-condensation method and used as support to synthesize Pt nanoparticles (NPs). The uniformly distributed COOH groups in the cage can control the growth of Pt NPs with high dispersion (Pt@CF-12). Pt@CF-12 was used as catalyst for the hydrolysis of ammonia borane to generate H2 and for the reduction of 4-nitrophenol to 4-aminophenol. The catalyst exhibits higher catalytic activity (H2 generation rate of 17.8 L H2 min−1 gcat -1 and lower activation energy of 30.67 kJ mol−1 compared with other Pt-based silica catalysts due to the small size of the Pt NPs (3.5 nm) and cage-type porous structure of the support, which allowed easy diffusion of reactants. Pt@CF-12 has excellent durability, since the support prevented NP aggregation and leaching of NPs during catalysis. Pt@CF-12 can convert 93 % of 4-nitrophenol to 4-aminophenol within 10 min.

Original languageEnglish
Pages (from-to)13540-13548
Number of pages9
JournalChemistry - A European Journal
Volume24
Issue number51
DOIs
StatePublished - 12 Sep 2018

Keywords

  • heterogeneous catalysis
  • mesoporous materials
  • nanoparticles
  • platinum
  • supported catalysts

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