Synthesis of graphene-based solid acid for catalytic reducing of p-nitrophenol

Yang, Ping; Nie, Taotao; Hu, Jun; Ni, Huiqiong; Shi, Jianjun

doi:10.1142/s1793604719500917

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…As an excellent photosemiconductor, titanium dioxide is widely applied in wastewater processing [11,12], antibacterial textiles [13][14][15], solar cells [16] and cosmetics [17,18]. Some semiconductor particles will yield electronhole pairs when irradiated by specific wavelengths [19,20].…”

Section: Introductionmentioning

confidence: 99%

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

Zheng

Zhou

et al. 2018

Coloration Technology

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Titanium dioxide (TiO2) dispersions were obtained by neutralising anatase nano‐titanium dioxide sols prepared by hydrolysing tetrabutyl titanate in acidic aqueous media. Pyrite was initially prepared via the microwave‐assisted method with a mixed solvent of ethylene glycol and small amounts of water, and was then used in sensitising micron‐sized titanium dioxide particles to obtain aramid fabrics with self‐cleaning properties. X‐ray diffraction demonstrated the crystalline structure of pyrite, and ultraviolet‐visible (UV‐vis) spectrum and energy‐dispersive X‐ray spectroscopy characterised the band gaps, surface status on fabrics and the distribution of the pyrite compound's titanium dioxide particles. The contact angle, UV protection factor (UPF) and photocatalytic degradation of methylene blue (MB) were used to evaluate the performance of treated aramid fabrics. Results show that pyrite‐sensitised titanium dioxide compounds obtained at pH 5 have smaller band gap energies and relatively poor wetting abilities, higher UPF values, and perform well in the photocatalytic degradation of MB. The pseudo‐first kinetic model was used to analyse elaborate sections of the curve for the degradation of MB.

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Section: Introductionmentioning

confidence: 99%

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

Zheng

Zhou

et al. 2018

Coloration Technology

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Construction and Properties of Ag-I Polymeric Clusters Attach with Nitrogen Heterocyclic Transition Metal Moiety

Liu

Bai

et al. 2022

J Inorg Organomet Polym

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Two silver cluster compounds {[Co(1,10′-phen) 3 ] 2 [Ag 8 I 12 ]} (1) and { [Co(2, 3 ] [Ag 10 I 11 ] (OH) 3DMF 2H 2 O} (2) (1,10′-phen=1,10′-phenanthroline, 2, 2′-bipy=2,2′-bipyridine) were designed and synthesized by solvent evaporation method. The two silver cluster compounds were characterized by elemental analysis, infrared spectroscopy, ultraviolet spectroscopy, thermogravimetric analysis and X-ray powder diffraction. The crystal structures of compounds 1 and 2 were determined by X-ray crystallography diffraction.Through the electrostatic interaction between the metallic Ag cluster moiety and the metallic Co cluster moiety, form stable interlaced layered super molecular structures. In order to explore functional properties, the catalytic reduction of p-nitrophenol and electrochemical behavior of compounds 1 and 2 were explored. The results show that compounds 1 and 2 can e ciently catalyze the reduction of pnitrophenol in the aqueous solution, and the reduction and removal rate can reach more than 90%. Highlights ▪Synthesis of compounds 1 and 2 characterized by single crystal X-ray crystallography in detail.▪1 and 2 through the electrostatic interaction between the metallic Ag cluster moiety and the metallic Co cluster moiety, formed stable interlaced layered super molecular structures.▪1 and 2 can e ciently catalyze the reduction of p-nitrophenol.

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Synthesis and Application of Silver and Cobalt Nanoparticles Immobilized on Ionic Liquid-Functionalized Halloysite Nanotubes in the Reduction of 4-Nitrophenol in Aqueous Solution

Yavari

Eftekhari‐Sis

Akbari

2021

NANO

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4-nitrophenol (4-NP) is a highly toxic pollutant for aquatic ecosystem and human life. Therefore, the catalytic reduction of 4-NP into useful 4-aminophenol (4-AP) is of interest. In this regard, two heterogeneous nanocatalysts, including Ag@HNTs-ILs and Co@HNTs-ILs were prepared by grafting imidazolium-based ionic liquids (ILs) onto the halloysite nanotubes (HNTs), followed by immobilization of Ag and Co nanoparticles (NPs), and characterized by means of FT-IR, SEM, EDX, TEM and XRD. The catalytic activity of the prepared nanocatalysts was evaluated for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) under environmentally friendly condition. A set of time, temperature, nanocatalyst amount and NaBH4/4-NP molar ratios was screened. The reusability experiments demonstrated that Ag@HNTs-ILs and Co@HNTs-ILs were highly reusable, up to five reduction cycles without considerable changes in the reaction time. As the synthesized hybrid nanocatalysts could be re-collected and reused for various catalytic runs without any significant loss in their catalytic activity, they could be considered very promising nanomaterials from sustainability point of view.

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Synthesis of graphene-based solid acid for catalytic reducing of p-nitrophenol

Cited by 4 publications

References 18 publications

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

Construction and Properties of Ag-I Polymeric Clusters Attach with Nitrogen Heterocyclic Transition Metal Moiety

Synthesis and Application of Silver and Cobalt Nanoparticles Immobilized on Ionic Liquid-Functionalized Halloysite Nanotubes in the Reduction of 4-Nitrophenol in Aqueous Solution

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