Startsida
Hjälp
Sök i LIBRIS databas

     

 

Sökning: onr:mvghnvnjkpfpq538 > Water oxidation

Water oxidation [Elektronisk resurs] From Molecular Systems to Functional Devices

Daniel, Quentin (författare)
Sun, Licheng (preses)
Robert, Marc (opponent)
Sun (medarbetare)
KTH Skolan för kemivetenskap (CHE) (utgivare)
Publicerad: Stockholm : KTH Royal Institute of Technology, 2017
Engelska 74
Serie: TRITA-CHE-Report, 1654-1081
Läs hela texten
Läs hela texten
  • E-bokAvhandling(Diss. Stockholm : Kungliga Tekniska högskolan, 2017)
Sammanfattning Ämnesord
Stäng  
  • The production of hydrogen gas, through the process of water splitting,is one of the most promising concepts for the production of clean andrenewable fuel.The introduction of this thesis provides a brief overview of fossil fuelsand the need for an energy transition towards clean and renewable energy.Hydrogen gas is presented as a possible candidate fuel with its productionthrough artificial photosynthesis, being described. However, the highlykinetically demanding key reaction of the process – the water oxidationreaction – requires the use of a catalyst. Hence, a short presentation of differentmolecular water oxidation catalysts previously synthesized is also provided.The second part of the thesis focuses on ruthenium-based molecularcatalysis for water oxidation. Firstly, the design and the catalytic performancefor a new series of catalysts are presented. Secondly, a further study onelectron paramagnetic resonance of a catalyst shows the coordination of awater molecule to a ruthenium centre to generate a 7-coordinated complex atRuIII state. Finally, in an electrochemical study, coupled with nuclear magneticresonance analysis, mass spectrometry and X-ray diffraction spectroscopy, wedemonstrate the ability of a complex to perform an in situ dimerization of twounits in order to generate an active catalyst.The final part of this thesis focuses on immobilisation of first rowtransition metal catalysts on the surface of electrodes for electrochemical wateroxidation. Initially, a copper complex was designed and anchored on a goldsurface electrode. Water oxidation performance was studied byelectrochemistry, while deactivation of the electrode was investigated throughX-ray photoelectron spectroscopy, revealing the loss of the copper complexfrom the electrode during the reaction. Finally, we re-investigated cobaltporphyrin complexes on the surface of the electrode. Against the backgroundof previous report, we show that the decomposition of cobalt porphyrin intocobalt oxide adsorbed on the surface is responsible for the catalytic activity.This result is discussed with regard to the detection limit of various spectroscopic methods. 

Ämnesord

Natural Sciences  (hsv)
Chemical Sciences  (hsv)
Organic Chemistry  (hsv)
Naturvetenskap  (hsv)
Kemi  (hsv)
Organisk kemi  (hsv)
Kemi  (kth)
Chemistry  (kth)

Indexterm och SAB-rubrik

Water oxidation
Renewable energy
Electrochemistry
EPR
Devices
Molecular system
Characterization
Inställningar Hjälp

Uppgift om bibliotek saknas i LIBRIS

Kontakta ditt bibliotek, eller sök utanför LIBRIS. Se högermenyn.

Om LIBRIS
Sekretess
Hjälp
Fel i posten?
Kontakt
Teknik och format
Sök utifrån
Sökrutor
Plug-ins
Bookmarklet
Anpassa
Textstorlek
Kontrast
Vyer
LIBRIS söktjänster
SwePub
Uppsök

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

Copyright © LIBRIS - Nationella bibliotekssystem

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy