UV–Vis operando spectroelectrochemistry for (photo)electrocatalysis: Principles and guidelines

Mesa, Camilo A.; Pastor, Ernest; Francàs, Laia

doi:10.1016/j.coelec.2022.101098

Cited by 21 publications

(21 citation statements)

References 59 publications

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“…For simplicity, Tafel analysis herein does not take into account the nonuniform coverage of intermediate species of OER. An overview of recent literature with respect to OER intermediate reaction kinetics has been recently the subject of a few reviews. ,, The coverage of intermediate species has been shown to depend on light intensity and the applied potential − and hence would influence OER kinetics in a more complete consideration …”

Section: Discussionmentioning

confidence: 99%

Semiconductor Catalysts for Oxygen and Hydrogen Evolution Reactions

Cendula

Bedoya-Lora

Prabhakar

2022

ACS Appl. Energy Mater.

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Semiconductors are the workhorse material of solar cells for the conversion of solar energy into electrical current. Similarly, catalysts play a major role in the electrochemical water splitting, providing efficient shuttles for the exchange of charge carriers between the solid and electrolyte. Simultaneous use of semiconductors as catalysts is under an ongoing research effort bringing together these different research fields toward a common target of renewable hydrogen production. In this Review, we summarize the common concepts from photovoltaics and electrocatalysis, highlighting the available literature on the catalytic properties of semiconductors toward hydrogen evolution and oxygen evolution reactions. The overpotential, photovoltage, and Tafel slope are considered as the main figures of merit for the water splitting reactions. The surveyed literature presents a broad span of Tafel slopes highlighting the complexity of the photoelectrode processes and rate-determining steps of the water splitting reactions. This work aims to provide arguments and suggestions for investigations of the common catalytic properties of semiconductors during the quest for the efficient photoelectrodes.

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Section: Discussionmentioning

confidence: 99%

Semiconductor Catalysts for Oxygen and Hydrogen Evolution Reactions

Cendula

Bedoya-Lora

Prabhakar

2022

ACS Appl. Energy Mater.

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“…(2) The simplified characterization of the electrochemical response at various time scales within the same conditions. [113,114] UIV-vis spectrophotometer is also an absorption spectroscopy focusing on electromagnetic radiation from the light source to the sample. Depending on the configuration set in the system, light is transmitted through the sample or reflected off it.…”

Section: Uv-vismentioning

confidence: 99%

“…To be UV active, molecules should contain π-electrons or non-bonding electrons (nelectrons), which can absorb energy in the UV and visible light regions to excite these electrons to reach higher anti-bonding molecular orbitals. [64,113] In the field of ARZBs, UV-vis is one of the few in situ characterizations for monitoring and quantifying the composite of the electrolyte, which makes UV-vis a perfect supplementary for in situ Raman and FTIR, considering that the Raman and FTIR spectra are more efficiencies in characterizing the interphase and active material structure evolution for ARZBs. In most cases of ARZBs, the in situ UV-vis has been applied to semi-quantifying the electrode active materials shuttle or dissolve into bulk electrolytes.…”

Section: Uv-vismentioning

confidence: 99%

In situ characterizations for aqueous rechargeable zinc batteries

et al. 2023

Carbon Neutralization

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Recently, aqueous rechargeable zinc batteries (ARZBs) have become a hot topic in secondary batteries. Constant attention has witnessed the development of ARZBs, such as active materials, reaction mechanisms, and mass transport, and huge successes have been achieved. However, as the fundamental basis of battery monitoring in real‐time and the theories of ARZBs, the in situ characterization techniques are equally worth discussing but the relevant review remains missing. Herein, this review focuses on the in situ characterization techniques of visualization and spectroscopy characterizations for ARZBs. Typical research of the in situ techniques is comprehensively discussed, including the setup of the in situ cells, the working principle of characterizations, the application, and the analysis applied in ARZBs. With the help of in situ characterizations, the reaction dynamics, transport kinetics, and thermodynamics in ARZBs can be thoroughly researched. Finally, the current primary challenges and future opportunities faced by in situ techniques toward ARZBs are also summarized.

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“…In this context, recent technological advances are opening the door to operando and in situ studies. [89][90][91] This includes exciting opportunities in microscopies, such as transmission electron and atomic force microscopies (TEM and AFM, respectively), as well as spectroscopies, such as IR, Raman and X-ray absorption, photoelectron and emission spectroscopies (XAS, XPS and XES, respectively). [92][93][94][95][96] Experimentally, one challenge that lies ahead of performing these advanced operando studies, will be to establish whether the observed surface changes result from the catalytic reaction or the measurement itself.…”

Section: Challenges and Outlookmentioning

confidence: 99%

“…In this context, recent technological advances are opening the door to operando and in situ studies. 89–91 This includes exciting opportunities in microscopies, such as transmission electron and atomic force microscopies (TEM and AFM, respectively), as well as spectroscopies, such as IR, Raman and X-ray absorption, photoelectron and emission spectroscopies (XAS, XPS and XES, respectively). 92–96…”

Section: Challenges and Outlookmentioning

confidence: 99%