| Abstrakt: |
Aims: The aim of this study was to identify photosynthetic pigments of microalga Haematococcus pluvialis and to measure its photovoltaic effect. Methodology and results: The methods used for pigment characterization were thin layer chromatography (TLC) followed by column chromatography, in which the fractions were confirmed using an ultraviolet-visible (UV-Vis) spectrophotometer. The eluents used for pigment purification were n-hexane and acetone in a ratio of 7:3. Based on the TLC chromatogram, there were seven colours (fractions) appeared on the plate. These fractions were assumed as carotenoids group, chlorophylls and pheophytins pigments. Based on UV-Vis spectrums, it can be confirmed that fraction four is chlorophyll a and fraction seven is β-carotene. Using the sandwich method, the crude extract and pure chlorophyll a and β-carotene were applied on the semiconductor TiO2 surface to produce dye-sensitized solar cells (DSSC). Conclusion, significance and impact of study: Based on IV-meter measurement, the efficiency of acetone crude extract, β-carotene and chlorophyll a as dye were 0.07%, 0.14% and 0.26%, respectively. Therefore, the photosynthetic pigments derived from the microalga H. pluvialis have the potential application in constructing DSSC, with chlorophyll being the most effective option. [ABSTRACT FROM AUTHOR] |
