How Eosin Y/Graphene Oxide-Based Materials Can Improve Efficiency of Light-Driven Hydrogen Generation: Mechanistic Aspects

Anna Lewandowska-Andrałojć,Ewelina Gacka,Tomasz Pedzinski,Bronislaw Marciniak,Daria Larowska

doi:10.1021/acs.jpcc.9b09573

Anna Lewandowska-Andrałojć, Ewelina Gacka + Show 3 more

Open Access

https://doi.org/10.1021/acs.jpcc.9b09573

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Abstract

We have demonstrated that the photocatalytic system, containing Eosin Y (EY) as a sensitizer, triethanolamine (TEOA) as a sacrificial electron donor, CoSO4 as a catalyst, and graphene oxide (GO), e...

Highlights

Among a variety of organic dyes, xanthene dyes are well studied due to their excellent photoactive properties.[1]
The demonstrated photoreduction of graphene oxide (GO) in the studied system could serve as a method for a simple, fast, and cost-effective synthesis of reduced GO
No significant amounts of hydrogen were detected in the absence of either irradiation or the photosensitizer Eosin Y (EY), indicating that hydrogen was produced through the photochemical reaction

Summary

Introduction

Among a variety of organic dyes, xanthene dyes are well studied due to their excellent photoactive properties.[1]. To understand why a higher efficiency of hydrogen production was achieved in Eosin Y sensitized GO, we conducted detailed studies on the EY−GO system that combined steady-state and time-resolved absorption and emission measurements.

Results

Conclusion