Few layered graphene oxide thin films: A potential matrix for immunosensors

Pachauri, Namrata; Verma, Shilpi; Singh, Priti; Singh, Surinder P.

doi:10.1080/10584587.2017.1368790

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…The photoelectrochemical properties were examined by linear sweep voltammetry (LSV) under dark, light, and chopped-light illumination (see Figure a). Initially, samples showed a prominent redox wave (Figure S9a) related to the ITO redox activity at low potentials. , To reduce the dark current, TiO 2 was deposited by ALD on the fibers. A 2.5 nm-thick layer was sufficient to significantly decrease the dark current without drastically compromising PEC performance (Figure S9b).…”

Section: Resultsmentioning

confidence: 99%

Composite Indium Tin Oxide Nanofibers with Embedded Hematite Nanoparticles for Photoelectrochemical Water Splitting

Elishav

Stone

Tsyganok

et al. 2022

ACS Appl. Mater. Interfaces

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Hematite is a classical photoanode material for photoelectrochemical water splitting due to its stability, performance, and low cost. However, the effect of particle size is still a question due to the charge transfer to the electrodes. In this work, we addressed this subject by the fabrication of a photoelectrode with hematite nanoparticles embedded in close contact with the electrode substrate. The nanoparticles were synthesized by a solvothermal method and colloidal stabilization with charged hydroxide molecules, and we were able to further use them to prepare electrodes for water photo-oxidation. Hematite nanoparticles were embedded within electrospun tin-doped indium oxide nanofibers. The fibrous layer acted as a current collector scaffold for the nanoparticles, supporting the effective transport of charge carriers. This method allows better contact of the nanoparticles with the substrate, and also, the fibrous scaffold increases the optical density of the photoelectrode. Electrodes based on nanofibers with embedded nanoparticles display significantly enhanced photoelectrochemical performance compared to their flat nanoparticle-based layer counterparts. This nanofiber architecture increases the photocurrent density and photon-to-current internal conversion efficiency by factors of 2 and 10, respectively.

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Section: Resultsmentioning

confidence: 99%