Plasmonic Bi nanoparticle decorated BiVO4/rGO as an efficient photoanode for photoelectrochemical water splitting

Subramanyam, Palyam; Khan, Tanmoy; Sinha, Gudipati Neeraja; Suryakala, Duvvuri; Subrahmanyam, Ch.

doi:10.1016/j.ijhydene.2019.08.214

Cited by 23 publications

(6 citation statements)

References 34 publications

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“…1h). 35 The XRD pattern of PProDOT shows three broad humps at 2q of 24.4 , 44.2 and 62.5 . The most intense hump is close to the (002) plane of graphitic carbon (PDF: 74-2330) with d ¼ 3.6 A (Fig.…”

Section: Structural Features Of the Pprodot/cms-binf Compositementioning

confidence: 98%

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

et al. 2020

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Section: Structural Features Of the Pprodot/cms-binf Compositementioning

confidence: 98%

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

et al. 2020

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“…The schematic diagram in Figure illustrates the electron-transfer mechanism in Bi 2 S 3 @rGO photoanodes for PEC water splitting. The CB and valence band (VB) positions of Bi 2 S 3 are −3.65 and −5.22 eV, respectively, , whereas the Fermi level of rGO is −4.72 eV . These values were calculated from CV (Figure S6), and the calculating procedure is shown in SI.…”

Section: Resultsmentioning

confidence: 99%

“…One of the possibilities to overcome these limitations is to couple Bi 2 S 3 with carbon materials (such as graphene and carbon nanotubes), which is predictable to promote the separation and transportation of charge carriers. − Reduced graphene oxide (rGO) has been extensively reported for photocatalytic enhancement in PEC applications due to its high electrical conductivity, − low cost, optical transparency, , and large surface area. Furthermore, several reports highlighted that graphene is the most effective carbon material for Bi 2 S 3 modification in improving photocatalytic enhancement. − For example, Wang et al reported a hybrid TiO 2 nanorod (NR)/(Bi 2 S 3 /rGO) 5 photoanode with good PEC performance and high efficiency while ensuring cost-competitiveness. In addition, most of the reported synthetic approaches for the preparation Bi 2 S 3 nanostructures exhibit rigorous experimental conditions like high reaction temperatures, high pressure, and capping agents, which probably increase the complexity, infeasibility, and limit the large-scale application.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Photoelectrochemical Performance of a Bi₂S₃@rGO Nanocomposite Photoanode for Efficient Water Splitting

et al. 2021

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Visible-light-active photoelectrodes are more responsive to high-energy conversion efficiency in photoelectrochemical (PEC) water splitting. In this work, we fabricated a bismuth sulfide@reduced graphene oxide (Bi2S3@rGO) nanocomposite photoanode via facile synthetic methods. Typical results show that the Bi2S3@rGO nanocomposite exhibited a high photocurrent density of 6.06 mA cm–2 and a maximum applied bias photon-to-current efficiency (ABPE) of 4.2% at 0.32 V. Moreover, Bi2S3 nanorods have more uniform dispersion on the surface of rGO sheets in the Bi2S3@rGO composite as demonstrated in the transmission electron microscopy images. In addition, photoluminescence and impedance studies reveal the enhanced charge-transfer properties in the Bi2S3@rGO photoelectrode. The enhanced PEC performance of the composite could be attributed to the effective visible-light absorption of Bi2S3 and the good electron-transfer properties of highly conductive rGO nanosheets, facilitating the charge separation and transportation, leading to the inhibition of charge recombination.

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“…However, bismuth selenide nanostructures have not been explored as a sensitizer in PEC water splitting. In general, pristine semiconductors such as BiVO 4 , − CdS, Bi 2 S 3 , , Sb 2 S 3 , Sb 2 Se 3 , etc. possess poor PEC efficiency owing to smaller open-circuit potentials (OCP < 0.2 V) and fast recombination of excitons.…”

Section: Introductionmentioning

confidence: 99%

TiO₂ Photoanodes Sensitized with Bi₂Se₃ Nanoflowers for Visible–Near-Infrared Photoelectrochemical Water Splitting

Subramanyam

Meena

Suryakala

et al. 2021

ACS Appl. Nano Mater.

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Semiconducting photoelectrodes emerge as an efficient platform for converting light energy into hydrogen by photoelectrochemical (PEC) water splitting. The present study reports the improvement in PEC performance using metal oxide photoelectrodes sensitized with a narrow-band-gap semiconductor Bi 2 Se 3 , which extends the light response beyond the visible region and generates and transports charge carriers. When Bi 2 Se 3 nanoflowers (NFs) were incorporated into the TiO 2 electrode, the extent of hydrogen production was found to be increased by an order of magnitude. The binary electrode TiO 2 /Bi 2 Se 3 nanocomposite exhibited a decent photocurrent density of 1.76 mA cm −2 at 1.23 V, which is three times superior to that of pure Bi 2 Se 3 NFs. Moreover, the binary TiO 2 /Bi 2 Se 3 electrode delivers the highest solar-to-hydrogen conversion efficiency of 1.01% at 0.6 V and incident photon-to-current conversion efficiency of 10.5%. Furthermore, both Bi 2 Se 3 and TiO 2 /Bi 2 Se 3 electrodes show superior photostabilities for over 6 h. The enhanced PEC activity is attributable to the facile transportation of photoelectrons from Bi 2 Se 3 to TiO 2 electrodes, thereby minimizing the charge recombination.

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Plasmonic Bi nanoparticle decorated BiVO4/rGO as an efficient photoanode for photoelectrochemical water splitting

Cited by 23 publications

References 34 publications

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

Facile Synthesis and Photoelectrochemical Performance of a Bi₂S₃@rGO Nanocomposite Photoanode for Efficient Water Splitting

TiO₂ Photoanodes Sensitized with Bi₂Se₃ Nanoflowers for Visible–Near-Infrared Photoelectrochemical Water Splitting

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Plasmonic Bi nanoparticle decorated BiVO4/rGO as an efficient photoanode for photoelectrochemical water splitting

Cited by 23 publications

References 34 publications

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

Facile Synthesis and Photoelectrochemical Performance of a Bi2S3@rGO Nanocomposite Photoanode for Efficient Water Splitting

TiO2 Photoanodes Sensitized with Bi2Se3 Nanoflowers for Visible–Near-Infrared Photoelectrochemical Water Splitting

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Facile Synthesis and Photoelectrochemical Performance of a Bi₂S₃@rGO Nanocomposite Photoanode for Efficient Water Splitting

TiO₂ Photoanodes Sensitized with Bi₂Se₃ Nanoflowers for Visible–Near-Infrared Photoelectrochemical Water Splitting