Application of electroactive Au/aniline tetramer–graphene oxide composites as a highly efficient reusable catalyst

Lai, Guan-Hui; Chou, Yi-Chen; Huang, Bi-Sheng; Yang, Ta‐I; Tsai, Mei‐Hui

doi:10.1039/d0ra08535a

Cited by 10 publications

(2 citation statements)

References 64 publications

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“…And for 1Au/EPI-5 and 3Au/EPI-5, which are take about 43 min and 25 min. these results show the AuNPs is an essential substance for catalyst, and their characteristics affect the catalytic activity [ 52 , 53 ]. We can get the order of catalytic activity: 5Au/EPI-5 > 3Au/EPI-5 > 1Au/EPI-5, which may be attributed to the successful loading of Au (reference TGA analysis) and the electronic metal-support interactions between the EPI-5 and AuNPs.…”

Section: Resultsmentioning

confidence: 99%

In Situ Redox Synthesis of Highly Stable Au/Electroactive Polyimide Composite and Its Application on 4-Nitrophenol Reduction

et al. 2023

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In this study, we developed a series of Au/electroactive polyimide (Au/EPI-5) composite for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) using NaBH4 as a reducing agent at room temperature. The electroactive polyimide (EPI-5) synthesis was performed by chemical imidization of its 4,4′-(4.4′-isopropylidene-diphenoxy) bis (phthalic anhydride) (BSAA) and amino-capped aniline pentamer (ACAP). In addition, prepare different concentrations of Au ions through the in-situ redox reaction of EPI-5 to obtain Au nanoparticles (AuNPs) and anchored on the surface of EPI-5 to form series of Au/EPI-5 composite. Using SEM and HR-TEM confirm the particle size (23–113 nm) of the reduced AuNPs increases with the increase of the concentration. Based on CV studies, the redox capability of as-prepared electroactive materials was found to show an increase trend: 1Au/EPI-5 < 3Au/EPI-5 < 5Au/EPI-5. The series of Au/EPI-5 composites showed good stability and catalytic activity for the reaction of 4-NP to 4-AP. Especially, the 5Au/EPI-5 composite shows the highest catalytic activity when applied for the reduction of 4-NP to 4-AP within 17 min. The rate constant and kinetic activity energy were calculated to be 1.1 × 10−3 s−1 and 38.9 kJ/mol, respectively. Following a reusability test repeated 10 times, the 5Au/EPI-5 composite maintained a conversion rate higher than 95%. Finally, this study elaborates the mechanism of the catalytic reduction of 4-NP to 4-AP.

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Section: Resultsmentioning

confidence: 99%

In Situ Redox Synthesis of Highly Stable Au/Electroactive Polyimide Composite and Its Application on 4-Nitrophenol Reduction

et al. 2023

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“…In our previous studies, aniline oligomers and electroactive polymers incorporating graphene oxide, SiO 2 , Au NPs, or carbon nanotubes were used as catalysts, 26 anti-corrosion coating materials, 27 and chemical sensors. 28,29 Poly(amic acid) (PAA), containing amide and carboxyl groups, is a typical precursor for polyimides.…”

Section: Introductionmentioning

confidence: 99%

A novel Au/electroactive poly(amic acid) composite as an effective catalyst for p-nitrophenol reduction

Lai

Huang

et al. 2021

RSC Adv.

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Highly Efficient and Recyclable Au/Aniline-Pentamer-Based Electroactive Polyurea Catalyst for the Reduction of 4-Nitrophenol

et al. 2022

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Application of electroactive Au/aniline tetramer–graphene oxide composites as a highly efficient reusable catalyst

Abstract: The stable and reusable Au/ATGO composites were prepared. Aniline tetramer not only modified GO but also can anchor Au NPs. The Au/ATGO composites as a catalyst exhibit good cycling stability.

Cited by 10 publications

References 64 publications

In Situ Redox Synthesis of Highly Stable Au/Electroactive Polyimide Composite and Its Application on 4-Nitrophenol Reduction

In Situ Redox Synthesis of Highly Stable Au/Electroactive Polyimide Composite and Its Application on 4-Nitrophenol Reduction

A novel Au/electroactive poly(amic acid) composite as an effective catalyst for p-nitrophenol reduction

Highly Efficient and Recyclable Au/Aniline-Pentamer-Based Electroactive Polyurea Catalyst for the Reduction of 4-Nitrophenol

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