The preparation of M (M: Mn2+, Cd2+, Zn2+)-doped CuO nanostructures via the hydrothermal method and their properties

Wang, Dagui; Wang, Yongqian; Jiang, Tingting; Jia, Hanxiang; Yu, Meihua

doi:10.1007/s10854-015-4003-2

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…These peaks, according to “ICSD reference No. 001-1136”, corresponded to (003), (100), (110), (002), (111), (200), (012), (102), (−202), (020), (021), (110), (202), (−113), (−311), (112), (220), and (004) planes [ 41 ], which shows that the Zn 2+ ions were incorporated effectively to the site of CuO lattice without interrupting the CuO crystal structure. Due to the resemblance in the Zn 2+ (0.74 Å) and Cu 2+ (0.73 Å) radius, Cu 2+ ions can be well substituted by Zn 2+ ions in the lattice structure.…”

Section: Resultsmentioning

confidence: 99%

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

et al. 2021

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Copper oxide and Zinc (Zn)-doped Copper oxide nanostructures (CuO-NSs) are successfully synthesized by using a hydrothermal technique. The as-obtained pure and Zn-doped CuO-NSs were tested to study the effect of doping in CuO on structural, optical, and antibacterial properties. The band gap of the nanostructures is calculated by using the Tauc plot. Our results have shown that the band gap of CuO reduces with the addition of Zinc. Optimization of processing conditions and concentration of precursors leads to the formation of pine needles and sea urchin-like nanostructures. The antibacterial properties of obtained Zn-doped CuO-NSs are observed against Gram-negative (Pseudomonas aeruginosa, Klebsiella pneumonia, Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria via the agar well diffusion method. Zn doped s are found to have more effective bacterial resistance than pure CuO. The improved antibacterial activity is attributed to the reactive oxygen species (ROS) generation.

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Section: Resultsmentioning

confidence: 99%

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

et al. 2021

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“…After Cu 2+ ions had been replaced by Pt 2+ ions in the CuO matrix, the lattice parameter of CuO crystal is changed because of the different ionic radius between Cu 2+ (0.73 Å) [28] and Pt 2+ (0.86 Å) [29]. As a result, with the increase of the Pt dopant from 0.75 wt % to 1.50 wt %, the (−111) and (111) peaks were slightly shifted to a lower angle [30]. What is more, we used the least square refinement method in the unit cell program to determine the lattice constants.…”

Section: Fabrication and Characterization Of Gas Sensorsmentioning

confidence: 99%

Effect of Platinum Doping on the Morphology and Sensing Performance for CuO-Based Gas Sensor

Tang

et al. 2018

Applied Sciences

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Pristine and Pt-doped CuO nano-flowers were synthesized by a simple water bath heating method in this paper. Highly sensitive hydrogen sulfide (H 2 S) gas sensors based on Pt-doped CuO nano-flowers were fabricated. Scanning electron microscopy, X-ray diffraction, inductively coupled plasma atomic emission spectrometry, and energy dispersive X-ray spectroscopy were used to examine the characteristics and morphology of materials. The sensing performances of sensors with different concentrations of Pt dopants were evaluated at different operating temperatures. The results indicated that the CuO sensor doped with 1.25 wt % Pt exhibited the highest response (R g /R a , where R g is the resistance in gas, and R a is the resistance in air) of 135.1 to 10 ppm H 2 S at 40 • C, which was 13.1 times higher than the response of a pure CuO sensor. Pt doping also plays an important role for the enhancement of H 2 S selectivity against C 2 H 5 OH, NH 3 , H 2 , CH 3 COCH 3 , and NO 2 .

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“…However, limited research has been conducted on Cd-doped CuO. Various deposition techniques have been employed by some researchers, including the hydrothermal method [20,21]. Additionally, alternative approaches such as the gel method [22], simple chemical precipitation method [23], and spray pyrolysis technique [24] have also been utilized.…”

Section: Introductionmentioning

confidence: 99%

Time-Resolved Sensitivity of a Cadmium-Doped Copper Oxide Thin Film as a Chlorine Gas Detector

Alotibi,

Shirbeeny,

Alshahrie

et al. 2024

Adv. Sci. Technol. Res. J.

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Due to its strong affinity for chlorine gas, Cd can potentially form CdCl 2 . Cd-doped CuO thin films are sensitive to chlorine gas, as careful inclusion of Cd in the CuO crystal structure modifies the energy gap depending on the dopant concentration. We employed spray pyrolysis to deposit Cd-doped CuO on fluorine tin oxide (FTO) while heating the substrate to 500 °C. The X-ray diffraction (XRD) analysis revealed that Cd was interstitially incorporated in the CuO lattice structure, as verified by scanning electron microscopy (SEM) imaging. The photoluminescence study demonstrated that increasing the Cd concentration in CuO resulted in higher emission intensity, providing valuable insights into Cu 2+ and O 2energy levels. Exposing a Cd-doped CuO thin film to chlorine gas modifies the bandgap, depending on the Cd concentration. The fluctuation in the bandgap energy of copper oxide doped with cadmium indicates the chlorine gas concentration nearby. Time-resolved measurements for the I-V characteristics of the thin film revealed considerable current variation during the exposure to chlorine gas.

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The preparation of M (M: Mn2+, Cd2+, Zn2+)-doped CuO nanostructures via the hydrothermal method and their properties

Cited by 12 publications

References 31 publications

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

Effect of Platinum Doping on the Morphology and Sensing Performance for CuO-Based Gas Sensor

Time-Resolved Sensitivity of a Cadmium-Doped Copper Oxide Thin Film as a Chlorine Gas Detector

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