High energy throughput using photogalvanic solar techniques and environmentally benign chemical system

Jonwal, Meenakshi; Koli, Pooran; Dayma, Yashodhara; Pareek, Ramesh Kumar

doi:10.1016/j.jpap.2024.100244

Journal of Photochemistry and Photobiology

2024

DOI: 10.1016/j.jpap.2024.100244

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High energy throughput using photogalvanic solar techniques and environmentally benign chemical system

Meenakshi Jonwal,

Pooran Koli,

Yashodhara Dayma

et al.

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Photogalvanics of the platinum working electrode in the Allura Red d-Galactose-didecyl dimethyl ammonium chloride-NaOH electrolyte

Koli,

Saren

2024

Sustainable Energy res.

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Photo-galvanic cell is a photochemical cell device whose performance depends on the combination of several factors like dye and reductant concentrations, dye stability, pH, light intensity, electrodes used, Pt electrode area, diffusion length, etc. An entirely new and unexplored combination of platinum with Allura Red photosensitizer, d-Galactose reductant, and didecyl dimethyl ammonium chloride (DDAC) surfactant has been explored in present research to upgrade the electrical performance of these cells. Allura Red is a water-soluble azo dye which shows good absorbance in region 501-507 nm. The Allura Red and DDAC is an anionic and cationic species, respectively, and therefore, the opposite charges of dye and surfactant molecules are expected to form a stable dye-surfactant complex enhancing the dye solubility and stability. d-Galactose has been used for its good reducing properties. This unexplored combination of Pt-Allura Red-d-Galactose-DDAC with these characteristics has encouraged further enhancement of the electrical output of the photogalvanic cells. The electrical output, stability, and spectral property of the photogalvanic cells have been studied in the present work. The observed power, current, potential, efficiency, and storage capacity (as half time) are of the order of 443.8 µW, 2400 µA, 721 mV, 11.61%, and 28 min, respectively. These observed results are higher than some reported data. In the spectral study, nearly the same band intensity of the pre-illuminated and post-illuminated electrolyte solution shows quite good photo-stability of the Allura Red dye in electrolyte form. This new combination of platinum-electrolyte still has the scope to achieve the enhanced cell performance of photogalvanic cells for future development.

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Photogalvanics of the platinum working electrode in the Allura Red d-Galactose-didecyl dimethyl ammonium chloride-NaOH electrolyte

Koli,

Saren

2024

Sustainable Energy res.

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High energy throughput using photogalvanic solar techniques and environmentally benign chemical system

Cited by 1 publication

References 38 publications

Photogalvanics of the platinum working electrode in the Allura Red d-Galactose-didecyl dimethyl ammonium chloride-NaOH electrolyte

Photogalvanics of the platinum working electrode in the Allura Red d-Galactose-didecyl dimethyl ammonium chloride-NaOH electrolyte

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