Operando and Time-Resolved X-Ray Absorption Spectroscopy for the Study of Photoelectrode Architectures

Baran, Tomasz; Fracchia, Martina; Vertova, Alberto; Achilli, Elisabetta; Naldoni, Alberto; Malara, Francesco; Rossi, Giacomo; Rondinini, Sandra; Ghigna, Paolo; Minguzzi, Alessandro; d’Acapito, Francesco

doi:10.1016/j.electacta.2016.04.153

Cited by 18 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…59 In situ time-resolved XAS was utilized for the characterization of the oxidation state and local structure of the target atom in a a-Fe 2 O 3 /IrO x model photoelectrode. 99 Although the time resolution is limited by the frequency of synchrotron bunches, this method is a great proof of concept and could lead to more advanced characterization methods. Other time-resolved characterization methods based on pump-probe techniques, such as transient absorption spectroscopy, can also provide detailed information about the charge relaxation/trapping behaviors and carrier dynamics in photocatalytic materials.…”

Section: Discussionmentioning

confidence: 99%

Current Mechanistic Understanding of Surface Reactions over Water-Splitting Photocatalysts

Zhang

Wang

Gong

2018

Chem

View full text Add to dashboard Cite

Solar water splitting for hydrogen generation over semiconductor photoelectrodes is a promising solution to the energy crisis and environmental issues. Because complex physical, chemical, and electrical processes are involved in solar energy conversion reactions, understanding the mechanisms is of great significance for the rational design of highly efficient solar water-splitting cells. This review describes the current mechanistic understanding of the adsorption of reactants, injection of charge carriers, and desorption of products during surface redox reactions. Variations of interfacial band-gap structures, the status of surface bonding, and the behavior of charge carriers in semiconductor photoelectrodes are discussed. This review could inspire further innovative work on understanding the mechanisms of solar water splitting.

show abstract

Section: Discussionmentioning

confidence: 99%

Current Mechanistic Understanding of Surface Reactions over Water-Splitting Photocatalysts

Zhang

Wang

Gong

2018

Chem

View full text Add to dashboard Cite

show abstract

“…In operando photocatalytic studies have been traditionally used to investigate reaction mechanisms using infrared spectroscopy (Rohmann et al, 2008 ; Renckens et al, 2010 ; Hauchecorne and Lenaerts, 2013 ; Zandi and Hamann, 2016 ). In the last decade, in operando analysis of the photocatalyst surface has been widely carried out using advanced (time-resolved) X-ray spectroscopy techniques, with emphasis into photoelectrochemical water splitting and hydrogen evolution processes (Braun et al, 2012 ; Bora et al, 2013 ; Crumlin et al, 2015 ; Baran et al, 2016 ; Li et al, 2016b ; Neppl et al, 2016 ; Lu et al, 2020 ). These techniques are not without their own experimental and analytical limitations.…”

Section: Qualitative Approaches For the Assessment Of Photocatalytic mentioning

confidence: 99%

Qualitative Approaches Towards Useful Photocatalytic Materials

Quesada-Cabrera

Parkin

2020

Front. Chem.

View full text Add to dashboard Cite

The long-standing crusade searching for efficient photocatalytic materials has resulted in a vast landscape of promising photocatalysts, as reflected by the number of reviews reported in the last decade. Virtually all of these reviews have focused on quantitative approaches aiming at developing an understanding of the underlying mechanisms behind photocatalytic behavior and the parameters that influence structure-function correlation. Less attention has been paid, however, to qualitative measures around the development and assessment of photocatalysts. These measures will contribute toward narrowing the range of potential photocatalytic materials for widespread applications. The current report provides a critical perspective over some of the main factors affecting the assessment of photocatalytic materials as a code of good practice. A case of study is also provided, where this qualitative analysis is applied to one of the most prolific materials of the last-decade, disorder-engineered, black titanium dioxide (TiO 2).

show abstract

“…S3(a)-S3(c)], where short pulses of a 400 nm LED were followed, at controlled delays, by single X-ray pulses. 86 This is possible by the fact that electrons travel in the synchrotron as discrete bunches, so X-ray beams are intrinsically pulsed. This method was applied under light and in the dark, using the differential approach described above and at two different delay times.…”

Section: X-ray Absorption Spectroscopymentioning

confidence: 99%

In situ characterizations of photoelectrochemical cells for solar fuels and chemicals

Yalavarthi

Henrotte

Minguzzi

et al. 2020

MRS Energy & Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

Operando and Time-Resolved X-Ray Absorption Spectroscopy for the Study of Photoelectrode Architectures

Cited by 18 publications

References 28 publications

Current Mechanistic Understanding of Surface Reactions over Water-Splitting Photocatalysts

Current Mechanistic Understanding of Surface Reactions over Water-Splitting Photocatalysts

Qualitative Approaches Towards Useful Photocatalytic Materials

In situ characterizations of photoelectrochemical cells for solar fuels and chemicals

Contact Info

Product

Resources

About