首页|Nano-silver incorporated amine functionalized graphene oxide titania nanotube composite: a promising DSSC photoanode

Nano-silver incorporated amine functionalized graphene oxide titania nanotube composite: a promising DSSC photoanode

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  • NSTL
  • Elsevier
Background: In dye-sensitized solar cell (DSSC), the semiconductor photoanode plays a vital role in gathering photo-excited electrons from the sensitizer. Generally, the photoconversion efficiency of photoanode is hampered by electron-hole recombination. To circumvent this, modification of TiO2 nanotubes with amine functionalized graphene oxide (GO) has been attempted. Methods: Nanocomposites consisting of ethylenediamine functionalized graphene oxide (GO/NH2) and titania nanotubes (TiO2 NTs) are prepared by hydrothermal method and are incorporated with 3 wt% of Ag nanoparticles. The nanocomposites are studied using diffuse reflectance spectroscopy, Raman spectroscopy, XRD, TEM and XPS techniques. Significant Findings: The GO surface acquire defect structure and disorder after amine functionalization which occurs via reactive oxygen groups to form C-N bond. The nano-silver incorporated amine functionalized GO modified TiO2 nanotubes (TiO2 NTs-GO/NH2/Ag) exhibit high dye adsorption capacity and leads to more light gathering. The DSSC fabricated with TiO2 NTs-GO/NH2/Ag photoanode exhibits very good photo-conversion efficiency (8.18%). Significant light-to-electrical energy conversion efficiency of the TiO2 NTs-GO/NH2/Ag photoanode DSSC is due to the efficient charge transport at the interfaces, high dye loading and broad absorption by the sensitizer adsorbed TiO2 NTs-GO/NH2/Ag thin-film. (C) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Amine-modified graphene oxideDye-sensitized solar cellImpedance spectroscopySilver modified photoanodesTiO2-GO nanocompositeSENSITIZED SOLAR-CELLSPHOTOVOLTAIC PROPERTIESLOW-COSTTIO2PERFORMANCENANOPARTICLESEFFICIENCYANATASEENHANCEMENTNANOCOMPOSITE

Kandasamy, M.、Selvaraj, M.、Alam, M. Mujahid、Maruthamuthu, P.、Murugesan, S.

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Madurai Kamaraj Univ

King Khalid Univ

Univ Madras

2022

10.1016/j.jtice.2022.104205

Journal of the Taiwan Institute of Chemical Engineers

Journal of the Taiwan Institute of Chemical Engineers

EISCI
ISSN：1876-1070
年,卷(期)：2022.131
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