Studies of mixed reductant systems with Azur A as photosensitizer for solar energy conversion and storage in photogalvanic cells

Abstract

Purpose: The role of mixed reductant systems in photogalvanic cells was studied in a photogalvanic system containing Azur A as photosensitizer, EDTA as reductant, which was mixed with dextrose, NTA and oxalic acid, respectively, for increasing the conversion efficiency and storage capacity of photogalvanic cells.Design/methodology/approach: This research presents an interesting photogalvanic system for improvement of conversion efficiency and storage capacity to reduce the cost of construction and ensure commercial viability.Findings: Observed values of photopotential and photocurrent for EDTA + dextrose-Azur A system are 778.0 mV, 55.0 μA, for EDTA + NTA-Azur A system are 830.0 mV, 292.0 μA and for EDTA + oxalic acid-Azur A system are 810.0 mV, 210.0 μA, respectively.Originality/value: The observed conversion efficiencies in these systems are 0.1045%, 0.9830% and 0.9092%, respectively, whereas storage capacities are 115.0 min., 290.0 min. and 86.0 min., respectively. It shows a higher performance of cells to gain its commercial viability.

The Role of Surfactants in Photogalvanics: Solar Energy Conversion and Storage in the Sodium Lauryl Sulphate–Thymol Blue–Mannose System

“…Madhwani et al [18][19][20] have used fuschin basic, rose bengal and fluorescein-ethylenediaminetetraacetic acid systems, in photogalvanic cells for solar energy conversion and storage. The effect of using two reductants in photogalvanic cells has been reported by Dubey [21], Gangotri and Indora [22], and Gangotri et al [23], while the use of two dyes in photogalvanic cells has been reported by Gangotri and Lal [24], and Lal and Yadav [25].…”

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

“…A search of literature (Gangotri and Regar, 1997;Gangotri et al, 1999;Gangotri and Lal, 2000;Gangotri and Meena, 2001;Gangotri and Genwa, 2004;Gangotri and Lal, 2005;Chauhan et al, 2006) reveals that different photosensitizers and reductants have been used in photogalvanic cells. We have studied the use of EDTA-new methylene blue C safranine O system in photogalvanic cell for solar energy conversion and storage.…”

Energy conversion and storage potential of photogalvanic cell based on mixed dyes system: Ethylene diaminetetraacetic acid—Toluidine blue—Thionine

“…Mixed dyes (combination of two dyes) were used to use the broad solar spectrum of visible region of solar radiation for generation of better electrical output [18, 19]. An enhancement in electrical output of the cell consisting of mixed dyes was observed when compared with the cell with single dye [20]. Absorption spectra of single and mixed dyes are shown in Figures 1a–1c.…”