Optimization of the Photocatalytic Reduction of Methylviologen Electron Mediator for Use in an Inorganic-Bio Hybrid Photocatalyst System

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Citation

Boschetti, Bianca, “Optimization of the Photocatalytic Reduction of Methylviologen Electron Mediator for Use in an Inorganic-Bio Hybrid Photocatalyst System,” Scholar@Simmons, accessed October 25, 2020, https://beatleyweb.simmons.edu/scholar/items/show/473.

Title

Optimization of the Photocatalytic Reduction of Methylviologen Electron Mediator for Use in an Inorganic-Bio Hybrid Photocatalyst System

Creator

Boschetti, Bianca

Date

2020

Description

Hydrogen gas has been highly sought after as an alternative fuel source that is safe for the environment, and its production can be facilitated via the splitting of water using light energy [1]. This gas production has been previously investigated using inorganic-bio hybrid photocatalyst systems, where TiO2 acted as the semiconductor to donate electrons to recombinant Escherichia coli cells that had taken up the genes responsible for hydrogen production in Clostridium acetobutylicum [1]. Methylviologen (MV 2+), an electron mediator and transporter, has been used in transporting the excited electrons to the biological component of the system [1]. For this investigation, a visible light-active photocatalyst was chosen to replace TiO2 as the semiconductor in a photocatalytic system with E. coli due to its ability to absorb in both the visible and UV light spectra, while TiO2 is only capable of absorbing in the UV light region [2]. The visible light-active photocatalyst was successfully synthesized [3] and characterized using scanning electron
microscopy (SEM), x-ray powder diffraction (XRD), and UV-Vis absorption spectroscopy. Photocatalytic experiments on the visible-light active photocatalyst for the optimization of MV2+ reduction were performed.

Video available upon request.

Subject

Photocatalysis; Inorganic Bio-Hybrid Photocatalyst System; Environment; Hydrogen; Chemistry

Publisher

Simmons University (Boston, Mass.)

Rights

Material from the Simmons University Archives collections are made available for study purposes only. For more information, or to request rights to reproduce or reuse any material, contact the the Simmons University Archives at archives@simmons.edu.

Format

mp4 video

Language

English

Type

Undergraduate Symposium
Project Discipline: Chemistry