Optical Properties: UV/Vis Diffuse Reflectance Spectroscopy and Photoluminescence

Berger, Thomas; Trunschke, Annette

doi:10.1002/9781119436782.ch12

Cited by 2 publications

(1 citation statement)

References 148 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Tauc plot was derived from the UV/Vis diffuse reflectance spectrum of a ZnMnO 3 /ZnO composite film (photodeposition time: 45 min) and highlights a linear region between 3.1 and 3.4 eV (Figure 5b ). The x‐intercept of a corresponding linear fit[ 34 , 35 ] yields a band gap E BG ~2.5 eV ( λ ~496 nm) in good accordance with the band gap of crystalline ZnMnO 3 nanosheets. In addition, a second contribution at lower energies i. e. at E >2.1 eV can be observed.…”

Section: Resultsmentioning

confidence: 70%

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution

2023

Self Cite

View full text Add to dashboard Cite

Compositionally and structurally complex semiconductor oxide nanostructures gain importance in many energy‐related applications. Simple and robust synthesis routes ideally complying with the principles of modern green chemistry are therefore urgently needed. Here we report on the one‐step, room‐temperature synthesis of a crystalline–amorphous biphasic ternary metal oxide at the ZnO surface using aqueous precursor solutions. More specifically, conformal and porous ZnMnO3 shells are photodeposited from KMnO4 solution onto immobilized ZnO nanowires acting not only as the substrate but also as the Zn precursor. This water‐based, low temperature process yields ZnMnO3/ZnO composite electrodes featuring in 1 M Na2SO4 aqueous solution capacitance values of 80 – 160 F g‐1 (as referred to the total mass of the porous film i.e. the electroactive ZnMnO3 phase and the ZnO nanowire array). Our results highlight the suitability of photodeposition as a simple and green route towards complex functional materials.

show abstract

Section: Resultsmentioning

confidence: 70%

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution

2023

Self Cite

View full text Add to dashboard Cite

show abstract

Biogenic Copper Oxide Nanoparticles Synthesized from Whole Plant Extract of Nicotiana plumbaginifolia Viv.: Characterization, Antibacterial, and Antioxidant Properties

Pawar,

Mungole,

Naktode

2024

Journal of the Turkish Chemical Society Section A: Chemistry

View full text Add to dashboard Cite

Nanoparticles crafted through biological processes show potential for advancing medicine. Plant-derived compounds, produced through environmentally friendly green synthesis, present distinctive and beneficial applications in the field of nanomedicine. This study describes an easy, sustainable, environmentally friendly, and cost-efficient method to create copper oxide nanoparticles (CuO NPs) using whole part of Nicotiana plumbaginifolia Viv. extract. The characterization involved various techniques like solid UV-Visible-DR analysis, Fourier transform infrared (FTIR), EDAX analysis, X-ray diffraction (XRD), transmitted electron microscopy (TEM), and scanning electron microscopy (SEM). The copper oxide nanoparticles (CuO NPs) were found to be quasi-spherical pattern, with sizes ranging from 12 to 14 nm, and exhibited a crystal structure identified as monoclinic. The resulting copper oxide nanoparticles (CuO NPs) were examined for antimicrobial and antioxidant properties. It showed suppressing bacterial growth against tested human pathogenic bacteria, emphasizing their potential as antimicrobial agents. Results revealed that the maximum zone of inhibition was observed when the concentrations (25, 50, and 100 μL,) of NPs is increased against S. aureus i.e. 17 mm, 20 mm and 22 mm respectively. Whereas findings also reveal potent antioxidant activity, with escalating CuO nanoparticle concentrations correlating to increased percentage inhibition 50 μg/mL – 1.68%, 100 μg/mL – 10.45%, 150 μg/mL – 18.54%, 200 μg/mL – 37.83%, and 250 μg/mL – 51.72%. The highest activity, at 51.72%, occurs at 250 μg/mL.

show abstract

Optical Properties: UV/Vis Diffuse Reflectance Spectroscopy and Photoluminescence

Cited by 2 publications

References 148 publications

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution

Biogenic Copper Oxide Nanoparticles Synthesized from Whole Plant Extract of Nicotiana plumbaginifolia Viv.: Characterization, Antibacterial, and Antioxidant Properties

Contact Info

Product

Resources

About

Optical Properties: UV/Vis Diffuse Reflectance Spectroscopy and Photoluminescence

Cited by 2 publications

References 148 publications

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO3: Room‐temperature Photodeposition from Aqueous Solution

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO3: Room‐temperature Photodeposition from Aqueous Solution

Biogenic Copper Oxide Nanoparticles Synthesized from Whole Plant Extract of Nicotiana plumbaginifolia Viv.: Characterization, Antibacterial, and Antioxidant Properties

Contact Info

Product

Resources

About

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution

Conformal Coverage of ZnO Nanowire Arrays by ZnMnO₃: Room‐temperature Photodeposition from Aqueous Solution