Photogalvanic Cells as a Device for Solar Energy Conversion and Storage: An EDTA-New Methylene Blue and Safranine O System

Yadav, S.; Lal, Chhagan

doi:10.1080/15567030802606228

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…Conventionally, the H-shaped glass tubes have been used to fabricate the PG cell. 59,60 But, the recent study reported by Koli et al on Congo Red dye sensitizer (MW 696.66, a diazo dye with −SO 2 O − Na þ and −NH 2 groups) has shown that the use of simple cylindrical glass vessels is not only cheap but also more efficacious in power generation. 44 In present study, the authors have also used simple cylindrical glass vessel for fabrication of the cell based on TPO dye sensitizer (MW 316.27, azo dye with −SO 2 O − Na þ and −OH groups), and have observed enhanced electrical output consistent with the reported study.…”

Section: Comparison Of Results Of the Tpo Dye Sensitizer With Similar...mentioning

confidence: 99%

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Graphite counter electrode modified Tropaeolin‐O photo‐sensitized photogalvanic cells for solar power and storage

Koli,

Kumar,

Dayma

et al. 2024

EcoEnergy

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An optimization, photo‐stability, and hysteresis property of the Graphite counter electrode‐modified Tropaeolin‐O (TPO) photo‐sensitized photogalvanic (PG) cells has been investigated. A complex H‐shaped cell design, a costly and delicate saturated calomel electrode (counter electrode), and a heavy sensitizer molecule (dye having high molecular weight, low diffusivity, and low photo‐stability) have been exploited for fabricating most of the PG cells so far. All these factors are not suitable for the fabrication of durable and cheap PG cells. Therefore, in the present study, the highly conductive/catalytically active robust graphite electrode with TPO dye photosensitizer (having a low molecular weight, higher diffusivity, and higher photo‐stability) has been exploited with diffusion‐friendly low cost and a simple transparent cylindrical glass tube. The cheap and robust graphite counter electrode has been exploited for optimization and long‐term study of the TPO photo‐sensitized PG cells. The observed electrical output is potential 676 mV, current 2000 µA, and power 340.0 μW. The power, current, and efficiency, have been found quite independent of the illumination window size. The potential and current have been observed to be quite stable over a long time during illumination, and the same has been supported by the hysteresis study.

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Section: Comparison Of Results Of the Tpo Dye Sensitizer With Similar...mentioning

confidence: 99%

“…Conventionally, the H‐shaped glass tubes have been used to fabricate the PG cell 59,60 . But, the recent study reported by Koli et al.…”

Section: Comparison Of Results Of the Tpo Dye Sensitizer With Similar...mentioning

confidence: 99%

Graphite counter electrode modified Tropaeolin‐O photo‐sensitized photogalvanic cells for solar power and storage

Koli,

Kumar,

Dayma

et al. 2024

EcoEnergy

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“…The mixed surfactant base results are reported for better electrical output by Lal and Gangotri 9 . Later on Meena et al, observed the photochemical degradation of dye 10 , Yadav et al, studied photo reduction of methylene blue and Safranine O in EDTA 11 . Rathore et al, 12,13 the shortlived processes in PG cells for solar power generation and storage.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Photo-sensitizers in Reductant Surfactant System in Photogalvanic cell for Photo induced Power Generation and Storage

Rathore,

Arya

2024

Orient. J. Chem

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In the recent research we compared the solar energy performance of photogalvanic cell (PG cell) for two food dyes that act as photosensitizer tatrazine and sunset yellow in the DSS-EDTA (Dioctyl sodium sulphosuccinate - Ethylenediamine tetraacetic acid) system for power generation and its storage. Both are azo food dyes and act as photosensitizer, DSS acts as an anionic Surfactant and EDTA act as a reductant. The electrical parameters of both dye systems were studied and compared. The observed conversion efficiencies and fill factor for both systems in the DSS-EDTA system were 0.6163%, 0.2800, and 1.2186%, 0.2900, respectively. The stable photopotential (Voc) was 879 mV and 864.0 mV whereas the stable photocurrent (isc) was 220µA and 390 µA, respectively. In addition to having built-in storage capacity, the photogalvanic cell can operate in dark conditions. The amount of time required for the cell to reach half the value of power at power point, which was measure its performance called t1/2 of the cell. Cell performance of both PG cell was determined and for the Tartrazine - EDTA - DSS system it has been obtained 100 minutes while for the sunset yellow - EDTA - DSS system it was observed at 140 minutes. The current-voltage (i-v) characteristics of both the systems have been studied.

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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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Photogalvanic Cells as a Device for Solar Energy Conversion and Storage: An EDTA-New Methylene Blue and Safranine O System

Cited by 9 publications

References 17 publications

Graphite counter electrode modified Tropaeolin‐O photo‐sensitized photogalvanic cells for solar power and storage

Graphite counter electrode modified Tropaeolin‐O photo‐sensitized photogalvanic cells for solar power and storage

A Comparative Study of Photo-sensitizers in Reductant Surfactant System in Photogalvanic cell for Photo induced Power Generation and Storage

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

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