Pre dye treated titanium dioxide nano particles sensitized by natural dye extracts of Pterocarpus marsupium for dye sensitized solar cells

Steephen, Ananth; Vivek, P.; Solaiyammal, T.; Murugakoothan, P.

doi:10.1016/j.ijleo.2015.02.066

Cited by 17 publications

(8 citation statements)

References 19 publications

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“…The chemical structure of xanthophylls is not the most adequate to establish bonds with Ti, but the polysaccharide might have a helper function for improving xanthophylls bounding to the Ti, probably favouring the anchorage of xanthophylls to the photoelectrode surface. Polysaccharides have OH groups that could be adsorbed onto the FTO/ TiO 2 and constitute a suitable way to anchor the xanthophylls (Ananth et al 2015;Musser et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Montagni

Enciso

Marizcurrena

et al. 2018

Environmental Sustainability

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Xanthophylls pigments extracted from Hymenobacter sp. UV11 (a bacterium that produces reddish colonies on agar) collected at Fildes Peninsula, King George Island, Antarctica, were tested as sensitizers in dye sensitized solar cells (DSSC). Experiments were performed in the presence and in the absence of a co-adsorbent, a slimy substance produced by UV11 and identified as a polysaccharide during this work. Results suggest that the highest conversion efficiency (0.03%) was obtained when using the orange-xanthophylls pigment in the presence of the α-1,4-glucan both co-extracted from UV11. This work highlights the importance of using co-adsorbents as co-adjuvants in the production of more efficient DSSC manufactured with bacterial dyes. These results may contribute to the development of an exploration program of Antarctic resources, and offer the possibility to start the change in the energetic matrix in that remote area of the Planet, decreasing the environmental impact associated with the use of fossil fuels.

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Section: Discussionmentioning

confidence: 99%

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Montagni

Enciso

Marizcurrena

et al. 2018

Environmental Sustainability

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“…Pure TiO 2 nanoparticles were synthesized from titanium isopropoxide (TIP) (Spectrochem–Aldrich, 98%) taken as a titanium precursor. A mixture of distilled water and acetic acid was used on the hydrolysis medium to produce TiO 2 nanoparticles (Ananth et al , 2015). A 50-mL solution of distilled water with 40 mL of TIP (Aldrich, 98%) was taken in a 400-mL beaker and mixed thoroughly along with a 20-mL solution of acetic acid.…”

Section: Experimental Workmentioning

confidence: 99%

Comparative analysis of anti-reflection coatings on solar PV cells through TiO₂and SiO₂nanoparticles

Sivakumar¹,

Gopalakrishnan

Razak³

2021

PRT

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Purpose Photon absorbance and reflectance are the most important parameters for the recombination of electron-hole pairs. Bandgap energy plays a vital role in photon absorption. That is, the photons with energy greater than band gap energy are absorbed. Also, the refractive index of semiconductors is responsible for photon reflection, as the surface with the highest refractive index will reflect more photons than a surface with have a low refractive index. The purpose of this paper is to improvise the absorbance and reduce the reflectance of photons on the front surface of solar cells. Design/methodology/approach Photon reflection is results in reduction in electron-hole pair generation due to the high refractive index of semiconductive materials. To overcome this problem, an Anti-reflection (AR) coating of TiO2 and SiO2 is undertaken on solar cells through the Sol-spin coating method. Finally, the effectiveness of the Anti-Reflection coating is scrutinized through UV Vis-Spectroscopy, which provides details regarding reflectance, absorbance and bandgap energy characteristics. Findings UV–visible spectroscopy was used to measure the responses from the samples. The samples responded to the ultraviolet and visible range of electromagnetic radiation perfectly. UV spectroscopy was done before and after the antireflection coating of TiO2 and SiO2 over the solar cell to find their corresponding extreme reflectance and absorbance values. The effects of TiO2 and SiO2 were evaluated from the results. Originality/value In this research work, the authors have done anti-reflection coating over solar cells with nanoparticles derived from sol-gel process. Absorbance of photons observed through diffuse reflection method.

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“…The nominal peak at 473.4 m/z could be assigned to sumaresinolic acid using [C 30 H 48 O 4 + H] + , a compound isolated from Myroxylon balsamum (L.) Harms (Wahlberg & Enzell 1971). Peaks at 535.3 and 553.3 m/z could be the fragment ions of xanthophyll, which is a class of carotenoids of molecular formula C 40 H 56 O 2 (Ananth et al 2015).…”

Section: Dart-fticr-ms Spectra Of Pterocarpus Santalinus and P Tinctmentioning

confidence: 99%

Wood discrimination analyses of Pterocarpus tinctorius and endangered Pterocarpus santalinus using DART-FTICR-MS coupled with multivariate statistics

et al. 2019

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Pterocarpus santalinus, listed in CITES Appendix II, is an endangered timber species as a result of illegal harvesting due to its high value and commercial demand. The growing demand for P. santalinus and timbers with the morphologically similar Pterocarpus tinctorius has resulted in confusion as well as identification problems. Therefore, it is of vital importance to explore reliable ways to accurately discriminate between P. santalinus and P. tinctorius. In this study, the method of direct analysis in real time and fourier transform ion cyclotron resonance mass spectrometry (DART-FTICR-MS), combined with multivariate statistical analysis, was used to extract chemical information from xylarium wood specimens and to explore the feasibility of distinguishing these two species. Significant differences were observed in their DART-FTICR-MS spectra. Orthogonal partial least square-discriminant analysis (OPLS-DA) showed the highest prediction, with an accuracy of 100%. These findings demonstrate the feasibility of authenticating wood types using DART-FTICR-MS coupled with multivariate statistical analysis.

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Pre dye treated titanium dioxide nano particles sensitized by natural dye extracts of Pterocarpus marsupium for dye sensitized solar cells

Cited by 17 publications

References 19 publications

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Comparative analysis of anti-reflection coatings on solar PV cells through TiO₂and SiO₂nanoparticles

Wood discrimination analyses of Pterocarpus tinctorius and endangered Pterocarpus santalinus using DART-FTICR-MS coupled with multivariate statistics

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Pre dye treated titanium dioxide nano particles sensitized by natural dye extracts of Pterocarpus marsupium for dye sensitized solar cells

Cited by 17 publications

References 19 publications

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Dye sensitized solar cells based on Antarctic Hymenobacter sp. UV11 dyes

Comparative analysis of anti-reflection coatings on solar PV cells through TiO2and SiO2nanoparticles

Wood discrimination analyses of Pterocarpus tinctorius and endangered Pterocarpus santalinus using DART-FTICR-MS coupled with multivariate statistics

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Comparative analysis of anti-reflection coatings on solar PV cells through TiO₂and SiO₂nanoparticles