Regular arrangement of Pt nanoparticles on S-layer proteins isolated from Lactobacillus kefiri: synthesis and catalytic application

In this work, platinum bionanocatalysts using S-layer proteins isolated from two strains of Lactobacillus kefiri as template were obtained. TEM and STEM images evidenced that Pt/CBS8348 shows a P6-array while Pt/CBS83111 does not show any defined array. Noteworthy, nanometric and subnanometric Pt clusters were observed in both Pt/CBS8348 and Pt/CBS83111 catalysts, with an average metal particle size estimated by TEM of 3.62 and 3.88 nm, respectively. Also, Pt/CBS8348 showed a higher number of dispersed Pt single atoms than Pt/CBS83111. Both Pt bionanocatalysts showed an excellent performance in the reduction of p-nitrophenol, reaching conversion values close to 65-70% in 15 min. Besides, both Pt/CBS8348 and Pt/CBS83111 were successfully reused nine times, maintaining conversion values between 75 and 90%.

Palabras clave: Bionanocatalysts , Hydrogenation , P-Nitrophenol , Platinum , S-Layer

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)

Identificadores

URI: http://hdl.handle.net/11336/83514

DOI: http://dx.doi.org/10.1016/j.mcat.2018.12.011

URL: https://www.sciencedirect.com/science/article/pii/S2468823118305893

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Articulos(CINDECA)
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"

Citación

Bolla, Patricia Araceli; Sanz, Agustina; Huggias, Sofia; Ruggera, José Fernando; Serradell, María de los Ángeles; et al.; Regular arrangement of Pt nanoparticles on S-layer proteins isolated from Lactobacillus kefiri: synthesis and catalytic application; Elsevier; Molecular Catalysis; 27-12-2018; 1-9

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