Chitosan modified Cu2O nanoparticles with high catalytic activity for p-nitrophenol reduction

Guo, Yan; Dai, Mingming; Zhu, Zhixu; Chen, Yuqi; He, Hao; Qin, Tianheng

doi:10.1016/j.apsusc.2019.02.246

Cited by 90 publications

(25 citation statements)

References 56 publications

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“…At present, copper and its oxide catalysts have attracted wide interest as a promising substituent for expensive noble metal catalysts (Au, Ag, and Pd) to the catalytic reduction of 4-nitrophenol. A large number of copper-based catalysts with high catalytic activity have been developed, such as copper nanoparticles (Cu NPs), 3 − 5 Cu 2 O NPs, 6 , 7 CuO NPs, 8 Cu@M (M = Au, Ag, and Pd), 9 − 12 Cu@Cu 2 O, 13 Cu@C, 14 Cu@MOF, 15 , 16 Cu@Polymer, 17 Cu@Cu 2 O@CuO, 18 and other composites. 19 − 21 These catalysts often involve complex preparation steps and have to be dispersed in solution to form a heterogeneous system.…”

Section: Introductionmentioning

confidence: 99%

Copper-Based Integral Catalytic Impeller for the Rapid Catalytic Reduction of 4-Nitrophenol

Sun

et al. 2021

ACS Omega

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The integral catalytic impeller can simultaneously improve reaction efficiency and avoid the problem of catalyst separation, which has great potential in applying heterogeneous catalysis. This paper introduced a strategy of combining electroless copper plating with 3D printing technology to construct a pluggable copper-based integral catalytic agitating impeller (Cu-ICAI) and applied it to the catalytic reduction of 4-nitrophenol (4-NP). The obtained Cu-ICAI exhibits very excellent catalytic activity. The 4-NP conversion rate reaches almost 100% within 90 s. Furthermore, the Cu-ICAI can be easily pulled out from the reactor to be repeatedly used more than 15 times with high performance. Energy-dispersive spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy characterizations show that the catalyst obtained by electroless copper plating is a ternary Cu-Cu 2 O-CuO composite catalyst, which is conducive to the electron transfer process. This low-cost, facile, and versatile strategy, combining electroless plating and 3D printing, may provide a new idea for the preparation of the integral impeller with other metal catalytic activities.

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Section: Introductionmentioning

confidence: 99%

Copper-Based Integral Catalytic Impeller for the Rapid Catalytic Reduction of 4-Nitrophenol

Sun

et al. 2021

ACS Omega

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“…xx of xx shown at 720 cm -1 and 618 cm -1 [7]. The bands shift in the region from 1700-700 cm -1 is influenced by the absorption peak of Cu-O bonds in this region [15].…”

Section: Mongolian Journal Of Chemistrymentioning

confidence: 91%

“…Thus, p-NP was listed as one of the priority hazardous and toxic pollutants by the U.S. Environmental Protection Agency (EPA) [5]. Various studies have been performed to reduce the content of p-NP in solution, such as photocatalytic hydrogenation [1,6], photoelectrocatalytic [7,8], biological degradation [9], and metal-free catalyst [10]. In recent years, the reduction of p-NP to p-aminophenol (p-AP) has gained attention from the scientific community, since p-AP is a low toxic compound useful as an important intermediate in the preparation of pharmaceuticals, lubricants, and dyes [11].…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, various studies have been devoted to the synthesis of Cu2O nanoparticles (NPs) that adopt various morphologies such as: nanocubes [14], octahedra [14,15], spherical particles [16], and nanowires [17]. The catalytic ability of Cu2O is influenced by its morphology since the structure-related band gap energy is essential to their photocatalytic performance [7].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of cuprous oxide nanocubes combined with chitosan nanoparticles and its application to p-nitrophenol degradation

Quyên

Ngan

et al. 2021

Mong. J. Chem.

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For the first time, cuprous oxide nanocubes (Cu2O NCBs) were successfully combined with chitosan nanoparticles (CS NPs) to generate Cu2O NCBs/CS NPs composites material with highly optical property and photocatalytic activity using a simple and eco-friendly synthetic approach at room temperature for 30 min. The synthesized Cu2O NCBs NPs/CS NPs were determined characterizations by Ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X – ray Diffraction (XRD), Transmission Electron Microscope (TEM) and Energy-dispersive X-ray spectroscopy (EDX). Results show that the Cu2O NCBs/CS NPs composites have an average particle size of ~3-5 nm; in which, Cu2O has the form of nanocubes (Cu2O NCBs) with size ~3-4 nm and chitosan nanoparticles with spherical shape (CS NPs) with size ~4-5 nm. In addition, the percent (%) composition of elements present in Cu2O NCBs/CS NPs composites material have been obtained respective: Cu (23.99%), O (38.18%), and C (33.61%). Moreover, Cu2O NCBs/CS NPs composites material was also investigated for photocatalytic activity applied in p-nitrophenol degradation. The obtained results showed that the catalytic capability of Cu2O NCBs/CS NPs for p-nitrophenol reduction reached the highest efficiency >55% in the treatment time of 25 min, and this efficiency was higher than that result of using ZnO@chitosan nanoparticles (ZnO@CS NPs) catalyst under the same conditions for comparison.

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“…Nano-cuprous oxide is a typical p-type semiconductor material with active electron holes, which exhibits effective catalytic activity, strong adsorption and low-temperature paramagnetic properties [1]. It has potential applications in organic synthesis, photoelectric conversion, new energy, water decomposition, sterilization, superconductivity, and others, and has become one of the most widely studied inorganic nanomaterials in the past decade [2,3,4,5,6,7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Non-Chloride in Situ Preparation of Nano-Cuprous Oxide and Its Effect on Heat Resistance and Combustion Properties of Calcium Alginate

Shao

Zhang

et al. 2019

Polymers

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With Cu2+ complexes as precursors, nano-cuprous oxide was prepared on a sodium alginate template excluded of Cl− and based on which the calcium alginate/nano-cuprous oxide hybrid materials were prepared by a Ca2+ crosslinking and freeze-drying process. The thermal degradation and combustion behavior of the materials were studied by related characterization techniques using pure calcium alginate as a comparison. The results show that the weight loss rate, heat release rate, peak heat release rate, total heat release rate and specific extinction area of the hybrid materials were remarkably lower than pure calcium alginate, and the flame-retardant performance was significantly improved. The experimental data indicates that nano-cuprous oxide formed a dense protective layer of copper oxide, calcium carbonate and carbon by lowering the initial degradation temperature of the polysaccharide chain during thermal degradation and catalytically dehydrating to char in the combustion process, and thereby can isolate combustible gases, increase carbon residual rates, and notably reduce heat release and smoke evacuation.

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Chitosan modified Cu2O nanoparticles with high catalytic activity for p-nitrophenol reduction

Cited by 90 publications

References 56 publications

Copper-Based Integral Catalytic Impeller for the Rapid Catalytic Reduction of 4-Nitrophenol

Copper-Based Integral Catalytic Impeller for the Rapid Catalytic Reduction of 4-Nitrophenol

Synthesis of cuprous oxide nanocubes combined with chitosan nanoparticles and its application to p-nitrophenol degradation

Non-Chloride in Situ Preparation of Nano-Cuprous Oxide and Its Effect on Heat Resistance and Combustion Properties of Calcium Alginate

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