Synthesis and photocatalytic activity of cubic cuprous oxide supported on activated carbon fibers

Liu, F.; Liu, Q.; Liu, Yaling; Xue, Ruiting; Li, P.; Fan, Xiaoxing

doi:10.1016/j.cplett.2019.01.011

Cited by 11 publications

(6 citation statements)

References 61 publications

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“…As we show, there are principally two lines that are centered at the binding energy of 286 eV and 530 eV. These lines are respectively attributed to the emitted electron from carbon and oxygen [38,49]. All the samples contain carbon as a major element, with the presence of oxygen in the surface, which agrees well the EDX results.…”

Section: Resultssupporting

confidence: 86%

“…The corresponding binding energies of these functionalities are respectively in the range 285.1, 287.4 and 289.1-289.6eV. Similarly, the O1s region also shows the presence of three features respectively ascribed to the C=O (229,7-530,2 eV), C-O (531.9-533.3 eV) and C-O-C/C-OH (534.3-536.0 eV) functionalities [49,50]. From this analysis, it seems that the resulting carbon structures contain the same elements as the case of other elaborated AC materials, but with different contents.…”

Section: Resultsmentioning

confidence: 89%

“…3 (a-b) the C1S and O1S lines, respectively. Qualitatively, the C1s regions shows three components (C1, C2 and C3), traducing the presence of carbon-carbon (C-C), carbonoxygen (C-O) and carbonyl groups (C=O) groupments [49,50]. The corresponding binding energies of these functionalities are respectively in the range 285.1, 287.4 and 289.1-289.6eV.…”

Section: Resultsmentioning

confidence: 99%

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Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

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Activated carbons have been prepared from rice straw by considering the material forms of rice straw, the chemical activation agent and the preparation method. The study seeks optimal conditions for giving better mico-and nano-properties, and to support the corresponding molecular structure. All the obtained results are referred to those of a commercial sample. Fourier transform infrared absorption, X-ray photoelectron spectroscopy, and dispersive X-ray spectroscopy are combined to determine functional groups. Moreover, a quantum chemical calculation has been done using density functional theory to argue the proposed molecular structure. Principally, the vibrational properties are compared to experimental results, and the corresponding electronic structure is calculated. Thermal stability and eventual reactions are evidenced by both differential and gravimetric thermal analysis. The surface topography of the resulting activated carbon is checked by scanning electron microscope and correlated with their chemical and textual characteristics carried out from Brunauer, Emmett and Teller analysis. Results illustrate that the resulting product is a mixture of carbon graphic structure and acidic/basic entities and exhibit a global acidic pH. The use of KOH as oxidant agent and the ground raw material form leads to obtain good properties such as higher surface area and higher porosity. Based on the size compatibility making it possible to introduce low-radius single-walled carbon nanotubes, the electronic structures of the prepared activated carbon and that of chiral (5,5) SWCNTs and their corresponding *

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

daiem¹,

Alotaibi²,

Alosime³

et al. 2020

Pol. J. Environ. Stud.

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“…The O–W–O stretching mode was discovered both in WO 3 and Cu 2 O@WO 3 (2–1) at 816 and 770 cm –1 . The vibrational band at 630 cm –1 shows the metal–oxygen (Cu–O) vibration of Cu 2 O . In Figure S3b, two characteristic bands at 717 and 806 cm –1 were assigned to the stretching modes of the W–O–W .…”

Section: Resultsmentioning

confidence: 99%

Norfloxacin Degradation by Persulfate Activated with Cu₂O@WO₃ Composites: Efficiency, Stability, Mechanism, and Degradation Pathway

Cai

et al. 2022

Ind. Eng. Chem. Res.

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Tungsten trioxide and cuprous oxide composites were successfully prepared by the solvothermal and coprecipitation method. The obtained composites were comprehensively characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), Raman, and PL spectroscopy. The Cu2O@WO3/PS system was developed to degrade norfloxacin (NOR) in an aqueous solution. The photodegradation experiments and electrochemical characterization (EIS and photocurrent curves) showed that Cu2O@WO3(2–1) exhibited optimal photocatalytic activity under visible light. Furthermore, the sulfate radical was corroborated to play a predominant role in the photodegradation process, and the possible free radical formation mechanism was put forward. Density functional theory (DFT) calculation and LC-MS were utilized to investigate the intermediates during NOR degradation, and three possible degradation pathways were elucidated. Ecotoxicity analysis by TEST showed that the toxicity of these intermediates was generally weaker than parent NOR. Moreover, the synthetic sample was authenticated to possess good stability and repeatability. This work provided the guidance for available and applicable utilization of persulfate photocatalytic activation technology in pharmaceutical wastewater purification.

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“…The existence of trace Cu 2+ might due to the oxidation of Cu 2 O to CuO during the preparation process [41]. The satellite peak of Cu centered at binding energy of 943.0 eV could be observed when the outgoing photoelectrons simultaneously interact with a valence electron and excite to a higher energy level [42]. The O 1s spectra shown in Fig.…”

Section: Characterization Of the S-cu 2 O Nanomaterialsmentioning

confidence: 98%

Enhanced selective adsorption ability of Cu2O nanoparticles for anionic dye by sulfur incorporation

et al. 2020

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Cu 2 O-based materials are potential adsorbents for the removal of anionic dyes pollutions. Herein, sulfur incorporation is designed to promote adsorption capacity of Cu 2 O. A series of sulfur-incorporated Cu 2 O nanomaterials are synthesized by a facile chemical reduction method. Sulfur incorporation favors the formation of small sized S-Cu 2 O particles in the range of 50-100 nm and their enhanced adsorption performances. The S-Cu 2 O particles show good adsorption activities for methyl orange solution (75-500 mg L −1 ) under pH 6-10 at room temperature. A superior adsorption capacity of 1485.24 mg g −1 for the removal of methyl orange is achieved on the S-Cu 2 O adsorbent. Adsorption behaviors of the S-Cu 2 O adsorbent fit well with Langmuir isotherm and pseudo-second-order kinetic model. Adsorption thermodynamic results indicate the exothermic and spontaneous adsorption process. Anionic dye can be adsorbed selectively on the S-Cu 2 O adsorbent and separated from cationic dyes. Density functional theory calculations prove a pronounced electron accumulation on sulfur sites, benefiting to the adsorption on S-Cu 2 O. A nonmetallic element incorporation for improving adsorption capacity of metal oxide adsorbents is provided as a promising strategy for other adsorbents.

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Synthesis and photocatalytic activity of cubic cuprous oxide supported on activated carbon fibers

Cited by 11 publications

References 61 publications

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Norfloxacin Degradation by Persulfate Activated with Cu₂O@WO₃ Composites: Efficiency, Stability, Mechanism, and Degradation Pathway

Enhanced selective adsorption ability of Cu2O nanoparticles for anionic dye by sulfur incorporation

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Synthesis and photocatalytic activity of cubic cuprous oxide supported on activated carbon fibers

Cited by 11 publications

References 61 publications

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Structural-Property Relationship in Activated Carbon Synthesized from Rice Straw for Electronic Application

Norfloxacin Degradation by Persulfate Activated with Cu2O@WO3 Composites: Efficiency, Stability, Mechanism, and Degradation Pathway

Enhanced selective adsorption ability of Cu2O nanoparticles for anionic dye by sulfur incorporation

Contact Info

Product

Resources

About

Norfloxacin Degradation by Persulfate Activated with Cu₂O@WO₃ Composites: Efficiency, Stability, Mechanism, and Degradation Pathway