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Issue 34, 2014
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Efficient decomposition of formaldehyde at room temperature over Pt/honeycomb ceramics with ultra-low Pt content

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Abstract

Pt/honeycomb ceramic (Pt/HC) catalysts with ultra-low Pt content (0.005–0.055 wt%) were for the first time prepared by an impregnation of honeycomb ceramics with Pt precursor and NaBH4-reduction combined method. The microstructures, morphologies and textural properties of the resulting samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The obtained Pt/HC catalysts were used for catalytic oxidative decomposition of formaldehyde (HCHO) at room temperature. It was found that the as-prepared Pt/HC catalysts can efficiently decompose HCHO in air into CO2 and H2O at room temperature. The catalytic activity of the Pt/HC catalysts increases with increasing the Pt loading in the range of 0.005–0.013 wt%, and the further increase of the Pt loading does not obviously improve catalytic activity. From the viewpoint of cost and catalytic performance, 0.013 wt% Pt loading is the optimal Pt loading amount, and the Pt/HC catalyst with 0.013 wt% Pt loading also exhibited good catalytic stability. Considering practical applications, this work will provide new insights into the low-cost and large-scale fabrication of advanced catalytic materials for indoor air purification.

Graphical abstract: Efficient decomposition of formaldehyde at room temperature over Pt/honeycomb ceramics with ultra-low Pt content

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Publication details

The article was received on 04 May 2014, accepted on 02 Jul 2014 and first published on 02 Jul 2014


Article type: Paper
DOI: 10.1039/C4DT01323A
Citation: Dalton Trans., 2014,43, 12935-12942
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    Efficient decomposition of formaldehyde at room temperature over Pt/honeycomb ceramics with ultra-low Pt content

    L. Nie, Y. Zheng and J. Yu, Dalton Trans., 2014, 43, 12935
    DOI: 10.1039/C4DT01323A

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