Cu-cuprous/cupric oxide nanoparticles towards dual application for nitrophenol conversion and electrochemical hydrogen evolution

Verma, Atul; Anand, Pandiyarajan; Kumar, Sanath; Fu, Yen‐Pei

doi:10.1016/j.apsusc.2021.151795

Cited by 18 publications

(13 citation statements)

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“…On the Cu 2p XPS spectra of Cu/C-10 and Cu/C-20, peaks at 932.77, 935.50, 941.52, 944.18, 952.87, 955.35, and 962.46 eV appear. The peaks at 932.77, 935.50, 952.87, and 955.35 eV are attributed to Cu 0 2p 3/2 , Cu 2+ 2p 3/2 , Cu 0 2p 1/2, and Cu 2+ 2p 1/2 , respectively, while the peaks at 941.52, 944.18, and 962.46 eV are the satellite peaks of Cu 2+ ( Biesinger, 2017 ; Wu et al, 2018 ; An et al, 2019 ; Verma et al, 2022 ). No evident XPS peaks characteristic of Cu 2 O can be seen on Cu/C-10 and Cu/C-20.…”

Section: Resultsmentioning

confidence: 99%

“…No evident XPS peaks characteristic of Cu 2 O can be seen on Cu/C-10 and Cu/C-20. On the Cu 2p XPS spectra of Cu/C-30, Cu/C-60, and Cu/C-120, in addition to the peaks of Cu 2+ and satellite peaks of Cu 2+ , the peaks caused by Cu + are also present at 933.41 and 953.22 eV, and there is no evident peak characteristic of metallic Cu 0 ( Biesinger, 2017 ; Wu et al, 2018 ; An et al, 2019 ; Verma et al, 2022 ). Based on Cu 2p XPS spectra, the Cu + /Cu 2+ ratios on the surfaces of Cu/C-10, Cu/C-20, Cu/C-30, Cu/C-60, and Cu/C-120 are calculated to be 0.00, 0.00, 0.21, 0.46, and 0.59, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The interfaces among copper oxides with copper in different valences, e.g . , Cu 2 O-CuO interface, have been revealed to provide the catalytic active sites for enhancing GOR ( Biesinger, 2017 ; Wu et al, 2018 ; An et al, 2019 ; Verma et al, 2022 ). At the interface, the copper with a lower valence is more favorable for glucose adsorption.…”

Section: Resultsmentioning

confidence: 99%

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Fast and efficient electrocatalytic oxidation of glucose triggered by Cu2O-CuO nanoparticles supported on carbon nanotubes

Wang

Liu²,

Cheng³

et al. 2022

Front. Chem.

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Electrocatalytic glucose oxidation reaction (GOR) is the key to construct sophisticated devices for fast and accurately detecting trace glucose in blood and food. Herein, a noble-metal-free Cu/C-60 catalyst is fabricated by supporting Cu2O-CuO nanoparticles on carbon nanotubes through a novel discharge process. For GOR, Cu/C-60 shows a sensitivity as high as 532 μA mM−1 cm−2, a detection limit as low as 1 μM and a steady-state response time of only 5.5 s. Moreover, Cu/C-60 has outstanding stability and anti-interference ability to impurities. The synergistic effect of Cu2O-CuO could improve the adsorption and conversion of glucose, thus enhancing GOR performance. By using Cu/C-60, we fabricate a three-electrode chip. A portable and compact electrochemical system is constructed by connecting the three-electrode chip with Cu/C-60 to an integrated circuit board and a mobile phone for recording and displaying data. The portable and compact electrochemical system results in a GOR sensitivity of 501 μA mM−1 cm−2, which is close to the data measured on the bloated electrochemical workstation. The detection limit of the portable and compact electrochemical system in GOR is 50 μM. This is higher than those obtained on the bloated electrochemical workstation, but is much lower than the common blood glucose concentration of human body (>3 mM). This demonstrates the accuracy, reasonability and applicability of the portable and compact electrochemical system. The results of the present work are helpful for fabricating fast, efficient and portable devices for detecting trace amount of glucose in blood and food.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fast and efficient electrocatalytic oxidation of glucose triggered by Cu2O-CuO nanoparticles supported on carbon nanotubes

Wang

Liu²,

Cheng³

et al. 2022

Front. Chem.

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“…Tetra(imidazole)copper(II) nitrate was used to obtain copper-containing nanoparticles by solid-state combustion. Copper oxides (Cu 2 O and CuO) with a small impurity of the reduced metal are identified as combustion products, which can be used as effective catalysts for methanol oxidation carbonylation [36], conversion of nitrophenol to aminophenol [37], photocatalytic hydrogen evolution [38], etc. Therefore, the combustion of [Cu(C 3 H 4 N 2 ) 4 ](NO 3 ) 2 complex under air can be considered as a new approach to prepare copper oxides with nanosized particles without the use of solvents.…”

Section: Discussionmentioning

confidence: 99%

Solvent-Free Method for Nanoparticles Synthesis by Solid-State Combustion Using Tetra(Imidazole)Copper(II) Nitrate

et al. 2022

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The development of solvent-free techniques for nanoparticles synthesis is one of the challenges of Green chemistry. In this work, the principled opportunity to obtain copper-containing nanosized particles without use of any solvents was shown. The copper complexes were prepared as precursors by the melting-assisted solvent-free synthesis. The formation of tetra(imidazole)copper(II) nitrate complex was confirmed by XRD, elemental analysis, FTIR spectroscopy, and thermal analysis. It was noted that their thermal decomposition occurs in two stages: (I) the low-temperature step may be related to redox interaction between organic ligands and nitrate-anions; (II) the high-temperature step may be related to the oxidation of the products of incomplete imidazole decomposition. TEM and XRD studies of solid products of complex combustion have shown that they are oxides with particle size less than 40 nm. Thus, the combustion of [Cu(Im)4](NO3)2 complex under air can be considered as a new approach to prepare nanosized particles of copper oxides without the use of solvents.

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“…Furthermore, the Cu-based materials showed a high catalytic performance for the reduction of 4-NP. Some of the recent papers include Cu–COF, 24 Cu 55 , 25 CNF/PEI2-Cu, 26 Cu–Cu 2 O, 27 Cu-doped glass, 28 Cu NPs/SG, 29 Cu-ICAI, 30 Cu NPs/boron nitride, 31 PZS@Ag–Cu NP composites, 32 and Cu/ZnO. 33 However, the application of Cu/HAP as a catalytic system for the reduction of 4-NP has not yet been reported, to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Cu-Doped 1D Hydroxyapatite as a Highly Active Catalyst for the Removal of 4-Nitrophenol and Dyes from Water

2022

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Metallic copper nanoparticle (Cu NP)-doped 1D hydroxyapatite was synthesized using a simple chemical reduction method. To describe the structure and composition of the Cu/HAP nanocomposites, physicochemical techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, inductively coupled plasma, N 2 adsorption–desorption, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy were used. The TEM scan of the Cu/HAP nanocomposite revealed a rod-like shape with 308 nm length and 117 nm width on average. The catalytic activity of Cu/HAP nanocomposites for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of NaBH 4 has been thoroughly investigated. The 0.7% Cu/HAP nanocomposite was shown to have superior catalytic activity than the other nanocomposites, converting 4-NP to 4-AP in ∼1 min with good recyclability. Moreover, this nanocomposite showed excellent catalytic performance in the organic dye reduction such as Congo red and acriflavine hydrochloride dyes. The high dispersion of Cu NPs on HAP support, the high specific surface area, and the small Cu particles contributed to its remarkable catalytic performance.

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Cu-cuprous/cupric oxide nanoparticles towards dual application for nitrophenol conversion and electrochemical hydrogen evolution

Cited by 18 publications

References 50 publications

Fast and efficient electrocatalytic oxidation of glucose triggered by Cu2O-CuO nanoparticles supported on carbon nanotubes

Fast and efficient electrocatalytic oxidation of glucose triggered by Cu2O-CuO nanoparticles supported on carbon nanotubes

Solvent-Free Method for Nanoparticles Synthesis by Solid-State Combustion Using Tetra(Imidazole)Copper(II) Nitrate

Cu-Doped 1D Hydroxyapatite as a Highly Active Catalyst for the Removal of 4-Nitrophenol and Dyes from Water

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