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. 2017 Dec;12(1):460.
doi: 10.1186/s11671-017-2220-8. Epub 2017 Jul 18.

Preparation and Enhanced Catalytic Hydrogenation Activity of Sb/Palygorskite (PAL) Nanoparticles

Lin Tan  1 , Muen He  1 , Aidong Tang  2 , Jing Chen  3
Affiliations

Preparation and Enhanced Catalytic Hydrogenation Activity of Sb/Palygorskite (PAL) Nanoparticles

Lin Tan et al. Nanoscale Res Lett. 2017 Dec.

Abstract

A Sb/palygorskite (PAL) composite was synthesized by a facile solvothermal process and applied in catalytic hydrogenation of p-nitrophenol for the first time. It was found that the Sb nanoparticles with the sizes of 2-5 nm were well dispersed on the fiber of PAL, while partial aggregated Sb nanoparticles with sizes smaller than 200 nm were also loaded on the PAL. The Sb/PAL composite with 9.7% Sb mass amounts showed outstanding catalytic performance by raising the p-nitrophenol conversion rate to 88.3% within 5 min, which was attributed to the synergistical effect of Sb and PAL nanoparticles facilitating the adsorption and catalytic hydrogenation of p-nitrophenol.

Keywords: Antimony; Catalytic performances; Palygorskite; Solvothermal synthesis.

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Figures

Fig. 1
Fig. 1
XRD patterns of (a) 100% Sb without PAL, (b) 9.7% Sb/PAL, and (c) PAL sample
Fig. 2
Fig. 2
SEM images of a, b PAL, c, d 100% Sb without PAL, and e, f 9.7% Sb/PAL sample and g, h EDS patterns of 9.7% Sb/PAL
Fig. 3
Fig. 3
a TEM image, b HRTEM image, the inserted image is the SAED pattern, and c – h the elemental map of 9.7% Sb/PAL
Fig. 4
Fig. 4
FTIR spectra of (a) PAL and (b) 9.7% Sb/PAL
Fig. 5
Fig. 5
a UV–vis absorption spectra of p-nitrophenol aqueous in the presence of 9.7% Sb/PAL composites catalyst, b catalytic activities of different sample, and c the recyclability of the 9.7% Sb/PAL hybrid composites
Fig. 6
Fig. 6
The pseudo first-order kinetics equation, corresponding chemical reaction equtions and Schematic illustration of the Sb/PAL composites fabrication
See this image and copyright information in PMC

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