Studies of the Micellar Effect on Photogalvanics: Solar Energy Conversion and Storage—EDTA-Safranine O-NaLS System

Gangotri, Κ. M.

doi:10.1080/15567030903077980

Cited by 11 publications

(9 citation statements)

References 30 publications

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“…The power reaches a maximum value at 0.46 M alkali concentration, and at alkali concentrations higher than 0.46 M, the cell power starts decreasing (Figure 7). This has also been observed in prior studies that the performance of the cell increases with increase in the alkalinity, and cell power reaches a maximum value at the optimal alkali concentration 8,9,12,31,32 . As the concentration of NaOH increase so does the pH of the solution.…”

Section: Resultssupporting

confidence: 79%

“…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%

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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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Section: Resultssupporting

confidence: 79%

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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“…It is reported that SLS is very effective in enhancing CE of cell, and have shown effect of raising CE up to two times of CE observed in its absence. The Gangotri has reported CE 0.72 % in presence of SLS, and CE 0.33 % in absence of SLS. Thus, the increase in CE from 7.58 % to 11.28 % (∼ 1.5 times) in present work is not unexpected.…”

Section: Resultsmentioning

confidence: 96%

Sodium Lauryl Sulphate Enhanced Solar Energy Conversion by Photogalvanic Effect of Rhodamine B‐Fructose in Artificial Light

Koli

2016

ChemistrySelect

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The present study has been done to improve the solar power and storage capacity of the Rhodamine B‐Fructose system with small Pt electrode by use of Sodium Lauryl Sulphate surfactant in the artificial light. With additional scope for reduction of the cost, the present study has shown greatly enhanced performance in terms of electrical parameters like power 336.05 μW, short‐circuit current 1150 μA, and conversion efficiency ∼11.28 %.

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“…Gangotri and Gangotri [26] have studied the effect of diffusion length (distance between the electrodes) in photogalvanic cells. The effect of varying the diffusion length on the electrical output (I max , I eq ) and initial rate of current generation in the photogalvanic cell can be observed by using H-cells of different dimensions.…”

Section: Effect Of Diffusion Length On the Systemmentioning

confidence: 99%

Photochemical Conversion of Solar Energy into Electrical Energy in an Eosin–Mannose System

Bhimwal

Gangotri

2011

Arab J Sci Eng

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Solar energy has been converted into electrical energy using an eosin-mannose system in a photogalvanic cell. The system uses solutions of sufficiently low concentration to be commercially viable. The photopotential and photocurrent generated by the system were 758.0 mV and 170.0 µA, respectively, while the maximum power and power point were 128.86 and 67.20 µW, respectively. The observed conversion efficiency was 0.6461% and the fill factor was 0.3739 against an absolute value of 1.0. The developed photogalvanic cell can operate for 75 min in the dark following irradiation for 120 min, i.e., the observed storage capacity is 62.5%. A mechanism for the photogeneration of electricity in the system has also been proposed. The developed photogalvanic cell exhibits appreciable conversion efficiency and storage capacity of solar energy, which along with its inexpensive construction make it promising for solar cell applications.

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Studies of the Micellar Effect on Photogalvanics: Solar Energy Conversion and Storage—EDTA-Safranine O-NaLS System

Cited by 11 publications

References 30 publications

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

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

Sodium Lauryl Sulphate Enhanced Solar Energy Conversion by Photogalvanic Effect of Rhodamine B‐Fructose in Artificial Light

Photochemical Conversion of Solar Energy into Electrical Energy in an Eosin–Mannose System

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