In Situ and Operando Catalyst Characterization
A special issue of Surfaces (ISSN 2571-9637).
Deadline for manuscript submissions: 31 December 2024 | Viewed by 2678
Special Issue Editors
Interests: ultrathin films; 2D materials; model electrocatalysts; model catalysts; HER, ORR and CRR
Special Issues, Collections and Topics in MDPI journals
Interests: surface science; electrochemistry; model catalyst; heterogeneous catalysis; water splitting; ultra-thin films; 2D materials; X-ray photoelectron spectroscopy; in-operando/in-situ EC-STM
Special Issue Information
Dear Colleagues,
The development of new technologies to meet the current energy and environmental challenges requires the acquisition of very fundamental knowledge regarding the structure and activity of catalytic materials at the nanometric scale. With the beginning of the new millennium, two “old” Latin words have attracted the attention of people working in the field of catalyst characterization: in situ and operando. We speak of in situ investigations when the evaluation of the catalyst is made under controlled pressure, atmosphere and temperature conditions, like those encountered during catalysis, but without this automatically implying any temporal evolution. Conversely, we speak of operando when the in situ investigations monitor the temporal evolution of the catalytic system and catalytic performances as the reactions take place. These concepts can be applied to a variety of advanced characterization techniques.
A particularly challenging endeavor is to derive an accurate correlation between an atomically well-defined site and its catalytic activity. In many cases, standard characterization techniques provide only area-averaged information, so connecting specific figures of merit concerning the reactivity to a single type of catalytic site is not trivial, given that various structural and morphological features can be co-present on the same “real” catalyst. Nowadays, some advanced techniques (e.g., scanning probe microscopies and electron microscopies) can focus on single atomic sites and allow us to observe the atoms at work during the reaction that takes place on the surfaces of a catalyst.
In this Special Issue, we cordially invite manuscripts that address advanced in situ and operando characterizations of catalysts, electrocatalysts, and, in general, other dynamic processes occurring on surfaces, both through local and defocused probes. We also welcome papers employing in silico approaches to study dynamic processes on surfaces.
Prof. Dr. Gaetano Granozzi
Dr. Tomasz Kosmala
Guest Editors
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Keywords
- in situ and operando characterization
- structure–activity relationships
- knowledge-based approach for catalysts for energy, environment and industrial applications
- study of the initial stage of the corrosion process
- self-assembly, adsorption and related phenomena
- STM/AFM and electrochemical STM/AFM
- TEM and X-ray adsorption techniques (XANES and EXAFS)
- ambient-pressure X-ray photoelectron spectroscopy
- scanning electrochemical microscopy (SECM)
- fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy
- theoretical and computational studies
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