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Topics in Catalysis
Erschienen in: Topics in Catalysis 3-4/2021

30.09.2020 | Original Paper

Preparation of Polyaniline Microtubes as the Gold Catalyst Support with Improved Catalytic Performances for the Reduction of Nitrophenols

verfasst von: Libo Sun, Lin Jiang, Jie Zhang, Toru Murayama, Miao Zhang, Yuhua Zheng, Huijuan Su, Caixia Qi

Erschienen in: Topics in Catalysis | Ausgabe 3-4/2021

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Abstract

Polyaniline (PANI) microtubes supported Au catalysts were prepared and evaluated in the catalytic reduction of nitrophenols to aminophenols with NaBH4 as the reductant. PANI microtubes were prepared through a template-free method with salicylic acid as the dopant. HAuCl4 was used as a gold precursor. Au nanoparticles were loaded on PANI microtubes by an in situ redox reaction between PANI and HAuCl4. The morphology and structure of the as-prepared PANI/Au composite catalyst were investigated using SEM, TEM, FT-IR, XRD and Raman spectra. We found that the metallic Au nanoparticles were loaded on PANI through the in situ redox reaction and located closer to the imine nitrogens of PANI. And the interaction between PANI and Au nanoparticles led the metallic Au negatively charged and favored the improvement of catalytic activities in the reduction of 4-nitrophenol (4-NP). A comparative study for the catalytic reduction of 3-nitrophenol (3-NP) and 2-nitrophenol (2-NP) showed that the activity sequence of PANI/Au was 3-NP > 2-NP > 4-NP.
Vorheriger Artikel Gold Nanoparticles Supported on Ce–Zr Oxides for Selective Hydrogenation of Acetylene
Nächster Artikel Optimization of Supports in Bifunctional Supported Pt Catalysts for Polystyrene Hydrocracking to Liquid Fuels

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Metadaten
Titel
Preparation of Polyaniline Microtubes as the Gold Catalyst Support with Improved Catalytic Performances for the Reduction of Nitrophenols
verfasst von
Libo Sun
Lin Jiang
Jie Zhang
Toru Murayama
Miao Zhang
Yuhua Zheng
Huijuan Su
Caixia Qi
Publikationsdatum
30.09.2020
Verlag
Springer US
Erschienen in
Topics in Catalysis / Ausgabe 3-4/2021
Print ISSN: 1022-5528
Elektronische ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-020-01385-x

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