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. 2018 Apr 16;8(25):13964-13969.
doi: 10.1039/c8ra01453a. eCollection 2018 Apr 11.

Pt incorporated mesoporous carbon spheres: controllable structure with enhanced catalytic activity and stability

Hongyan Liu  1 , Yaling Liu  1 , Huimei Da  1 , Ruo Yuan  1
Affiliations

Pt incorporated mesoporous carbon spheres: controllable structure with enhanced catalytic activity and stability

Hongyan Liu et al. RSC Adv. .

Abstract

We report a simple synthesis process to prepare well-dispersed Pt nanoparticles incorporated in mesoporous carbon spheres. By manipulating the relative ratio of Pt precursor and resorcinol-formaldehyde resin (RF), Pt/carbon composites with different morphologies and Pt content were achieved. The as-prepared Pt/C composite materials show higher catalytic activity and reusability for the reduction of 4-nitrophenol (4-NP) than the Pt deposited commercial activated carbon (Pt/AC), which can be ascribed to the high dispersion of Pt nanoparticles in the carbon spheres.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. TEM image of Pt@RF composites prepared using (A and D) 230 μmol, (B and E) 345 μmol, and (C and F) 460 μmol of resorcinol.
Fig. 2
Fig. 2. TEM image of Pt/RF composites prepared using (A) 4.6 μmol, (B) 9.2 μmol, (C) 13.8 μmol, and (D) 18.4 μmol of H2PtCl6.
Fig. 3
Fig. 3. TEM image of (A) 1Pt/C, (B) 2Pt/C, (C) 3Pt/C, and (D) 4Pt/C composites.
Fig. 4
Fig. 4. Nitrogen adsorption/desorption isotherms (A) and BJH pore-size distributions (B) of various Pt/C composites.
Fig. 5
Fig. 5. (A) UV-vis absorption spectra changes showing reduction of 4-NP using the 2Pt/C catalyst and (B) semilogarithmic plot versus time in the presence of different Pt/C catalysts.
Fig. 6
Fig. 6. Conversions of 4-nitrophenol in several cycles catalyzed by 2Pt/C spheres and Pt/AC.
See this image and copyright information in PMC

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