Functionalized conjugated polymer with plasmonic Au nanoalloy for photocatalytic hydrogen generation under visible-NIR

Srabanti Ghosh, Divya Rashmi, Susmita Bera, Rajendra N. Basu

Research output: Contribution to journalArticle

Abstract

Gold based multimetallic nanoalloys decorated on conjugated polymer nanofibers have been prepared using a greener approach without using any reducing agent. The as-prepared nanohybrids exhibited superior catalytic activity for solar hydrogen production under visible light (λ > 420 nm)irradiation and near infrared light irradiation. The UV–Visible diffuse reflectance spectra displayed strong absorption in the visible region which significantly favours the photocatalytic performance. Furthermore, the efficient charge separation suggested by electrochemical impedance measurement and photocurrent response curves for Au50Pt24Pd26/PPy nanohybrids which exhibited significant enhancement in H2 generation rate compared to Au/PPy nanohybrids. The strong interface contact between Au nanoalloys and PPy nanofibers play an important role for the migration of electron during catalysis. The Mott–Schottky plot revealed that photo generated charge carrier concentration has been increased for Au50Pt24Pd26/PPy nanohybrids (7.93 × 1011cm−3)compare to pure PPy (1.43 × 1011 cm−3). The present study provides a new prospect for using conducting polymer based hybrid as photocatalysts for efficient solar hydrogen production.

Original languageEnglish
Pages (from-to)13262-13272
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number26
DOIs
Publication statusPublished - 21-05-2019
Externally publishedYes

Fingerprint

Conjugated polymers
hydrogen production
Hydrogen production
Nanofibers
Irradiation
Hydrogen
irradiation
impedance measurement
Conducting polymers
polymers
conducting polymers
Reducing agents
hydrogen
polarization (charge separation)
Photocatalysts
Charge carriers
Photocurrents
Catalysis
catalysis
Carrier concentration

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Ghosh, Srabanti ; Rashmi, Divya ; Bera, Susmita ; Basu, Rajendra N. / Functionalized conjugated polymer with plasmonic Au nanoalloy for photocatalytic hydrogen generation under visible-NIR. In: International Journal of Hydrogen Energy. 2019 ; Vol. 44, No. 26. pp. 13262-13272.
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Functionalized conjugated polymer with plasmonic Au nanoalloy for photocatalytic hydrogen generation under visible-NIR. / Ghosh, Srabanti; Rashmi, Divya; Bera, Susmita; Basu, Rajendra N.

In: International Journal of Hydrogen Energy, Vol. 44, No. 26, 21.05.2019, p. 13262-13272.

Research output: Contribution to journalArticle

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