Evaluation of mixed dye combination by spectral study for the application as photosensitizer in photogalvanic cells for solar energy conversion and storage

Tiwari, Shachi; Mall, Chandrakanta; Solanki, Prem Prakash

doi:10.1016/j.surfin.2021.101688

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…At regular intervals of 15 min, a volume of 2.0 ml of the sample was extracted from the tube and subjected to centrifugation to facilitate the separation of the photocatalyst. The absorbance of the solution was measured at a wavelength of 664.0 nm using a UV–Visible spectrophotometer 57 . The proportion of degradation was determined by the utilization of a mathematical equation.…”

Section: Methodsmentioning

confidence: 99%

Immobilized lipase enzyme on green synthesized magnetic nanoparticles using Psidium guava leaves for dye degradation and antimicrobial activities

Fahim,

El-Khawaga,

Sallam

et al. 2024

Sci Rep

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Zinc ferrite nanoparticles (ZnF NPs) were synthesized by a green method using Psidium guava Leaves extract and characterized via structural and optical properties. The surface of ZnF NPs was stabilized with citric acid (CA) by a direct addition method to obtain (ZnF-CA NPs), and then lipase (LP) enzyme was immobilized on ZnF-CA NPs to obtain a modified ZnF-CA-LP nanocomposite (NCs). The prepared sample’s photocatalytic activity against Methylene blue dye (MB) was determined. The antioxidant activity of ZnF-CA-LP NCs was measured using 1,1-diphenyl-2-picryl hydrazyl (DPPH) as a source of free radicals. In addition, the antibacterial and antibiofilm capabilities of these substances were investigated by testing them against gram-positive Staphylococcus aureus (S. aureus ATCC 25923) and gram-negative Escherichia coli (E. coli ATCC 25922) bacterial strains. The synthesized ZnF NPs were discovered to be situated at the core of the material, as determined by XRD, HRTEM, and SEM investigations, while the CA and lipase enzymes were coated in this core. The ZnF-CA-LP NCs crystallite size was around 35.0 nm at the (311) plane. Results obtained suggested that 0.01 g of ZnF-CA-LP NCs achieved 96.0% removal of 5.0 ppm of MB at pH 9.0. In-vitro zone of inhibition (ZOI) and minimum inhibitory concentration (MIC) results verified that ZnF-CA-LP NCs exhibited its encouraged antimicrobial activity against S. aureus and E. coli (20.0 ± 0.512, and 27.0 ± 0.651 mm ZOI, respectively) & (1.25, and 0.625 μg/ml MIC, respectively). ZnF-CA-LP NPs showed antibiofilm percentage against S. aureus (88.4%) and E. coli (96.6%). Hence, ZnF-CA-LP NCs are promising for potential applications in environmental and biomedical uses.

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Section: Methodsmentioning

confidence: 99%

Immobilized lipase enzyme on green synthesized magnetic nanoparticles using Psidium guava leaves for dye degradation and antimicrobial activities

Fahim,

El-Khawaga,

Sallam

et al. 2024

Sci Rep

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“…Whether of natural or synthetic origin, dyes are substances able to provide color and are usually water-soluble. There are several applications for these molecules, such as in textiles, foods, cosmetics and medicine [ 12 ]. In 1900, Oscar Raab left the protozoan Paramecium caudatum in contact with the dye acridine orange and observed a toxic effect after sunlight exposure [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Phototoxic Potential of Different DNA Intercalators for Skin Cancer Therapy: In Vitro Screening

Pivetta

Vieira

Silva

et al. 2023

IJMS

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Photodynamic therapy is a minimally invasive procedure used in the treatment of several diseases, including some types of cancer. It is based on photosensitizer molecules, which, in the presence of oxygen and light, lead to the formation of reactive oxygen species (ROS) and consequent cell death. The selection of the photosensitizer molecule is important for the therapy efficiency; therefore, many molecules such as dyes, natural products and metallic complexes have been investigated regarding their photosensitizing potential. In this work, the phototoxic potential of the DNA-intercalating molecules—the dyes methylene blue (MB), acridine orange (AO) and gentian violet (GV); the natural products curcumin (CUR), quercetin (QT) and epigallocatechin gallate (EGCG); and the chelating compounds neocuproine (NEO), 1,10-phenanthroline (PHE) and 2,2′-bipyridyl (BIPY)—were analyzed. The cytotoxicity of these chemicals was tested in vitro in non-cancer keratinocytes (HaCaT) and squamous cell carcinoma (MET1) cell lines. A phototoxicity assay and the detection of intracellular ROS were performed in MET1 cells. Results revealed that the IC50 values of the dyes and curcumin in MET1 cells were lower than 30 µM, while the values for the natural products QT and EGCG and the chelating agents BIPY and PHE were higher than 100 µM. The IC50 of MB and AO was greatly affected by irradiation when submitted to 640 nm and 457 nm light sources, respectively. ROS detection was more evident for cells treated with AO at low concentrations. In studies with the melanoma cell line WM983b, cells were more resistant to MB and AO and presented slightly higher IC50 values, in line with the results of the phototoxicity assays. This study reveals that many molecules can act as photosensitizers, but the effect depends on the cell line and the concentration of the chemical. Finally, significant photosensitizing activity of acridine orange at low concentrations and moderate light doses was demonstrated.

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“…The endeavor to continuously improve and optimize photogalvanic cell by using different dye sensitizers, reductants, and surfactants has been a consistent effort by researchers. Various dye photo‐sensitizers (such as the Bromophenol Red, 3 Congo Red, 4 Azur B, 5 Methylene Blue, 6 Brilliant Cresyl Blue, 7 Rose Bengal, 8 Safranine O, 9,10 Indigo Carmine, 11 Sudan‐I, 12 Rhodamine B, 7 Fast Green FCF, 13 Metanil Yellow, 14 mixed dyes, 15 Eosin, 16 Toluidine blue, 17 etc.) and similarly different reductants (like ethylenediamine tetra acetic acid, 5,6 formic acid, 11 fructose, 12 Fe +2 , 18 sugars, 16 D‐Xylose, 17 etc.)…”

Section: Introductionmentioning

confidence: 99%

Photogalvanics of Dodecyltrimethyl Ammonium Bromide‐Quinoline Yellow‐alkali: A solar energy conversion, storage, photostability, and spectral study

Jonwal

Koli

Dayma

et al. 2022

Intl J of Energy Research

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Summary The technology to harness solar power has been evolving continuously with a recent focus on simultaneous power storage as well. Photogalvanic (PG) cell is a promising technology for simultaneous solar power and storage. The nature of the sensitizer, reductant, surfactant, and electrodes are the key factor determining the efficiency, stability, and power storage capacity of the PG cells. The use of a more stable dye with good diffusivity and conductivity realized through the most suitable surfactant has evaded the attention of researchers. Therefore, in the present study, the photogalvanics of the stable Quinoline Yellow (QY) dye photosensitizer in the presence of the Dodecyltrimethyl Ammonium Bromide (DTAB) surfactant, and Cellobiose reductant at an elevated pH has been studied for solar energy conversion and storage. The entirely novel and new photogalvanic system has shown abruptly enhanced electrical performance of the PG cell as potential 900 mV, current 10 000 μA, and power 989 μW. Encouraging photogalvanics may be attributed primarily to the greater QY dye‐DTAB surfactant interaction enhanced dye solubility, stability, and diffusion through the electrolyte. Spectrometric and conductometric study of the electrolyte has validated good photostability and conductivity of the electrolyte solution. Based on published literature and observed facts, a most plausible mechanism for the photogeneration of the current and power storage capacity has also been proposed. The present research does not introduce any new mechanism for the photo‐generation of the current, but a new and novel cell fabrication design with greatly enhanced electrical output in comparison to that in earlier studies. Novelty statement The cationic Dodecyltrimethyl Ammonium Bromide surfactant and Quinoline Yellow (QY) anionic dye sensitizer has been exploited in the presence of Cellobiose reductant for enhanced dipole‐dipole interactions for further enhancing the photogalvanics. The hypsochromic and hypochromic shift of main band of QY in electrolyte may be attributed to the QY‐DTAB complex formation due to interaction between the anionic QY dye and cationic DTAB surfactant. The present study shows abruptly enhanced electrical output (potential 900 mV, current 10 000 μA, power 989 μW).

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Evaluation of mixed dye combination by spectral study for the application as photosensitizer in photogalvanic cells for solar energy conversion and storage

Cited by 4 publications

References 32 publications

Immobilized lipase enzyme on green synthesized magnetic nanoparticles using Psidium guava leaves for dye degradation and antimicrobial activities

Immobilized lipase enzyme on green synthesized magnetic nanoparticles using Psidium guava leaves for dye degradation and antimicrobial activities

Phototoxic Potential of Different DNA Intercalators for Skin Cancer Therapy: In Vitro Screening

Photogalvanics of Dodecyltrimethyl Ammonium Bromide‐Quinoline Yellow‐alkali: A solar energy conversion, storage, photostability, and spectral study

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