Navigationsweiche Anfang

Navigationsweiche Ende

Select language

Photogalvanic and photoelectrochemical cells with TiO<sub>2</sub>

higher secondary education



V1

Construction of the 2-pot, 1-pot and compact cell using TiO2-photoelectrodes (made from Hombikat 100), U- and I-measurements under irradiation with light of different λ-ranges

Extra: Detection of the products Br2(aq) and H2(g) in the 2-pot cell

V2Sensibilisation of the TiO2-photoelectrodes with anthocyanes from raspberry juice, U- and I-measurements under irradiation with light of different λ-ranges
V3

Construction of translucid and trasparent compact cells with photoelectrodes made from stabilized suspensions of nano-TiO2 by a) coating with a sharp edge and b) spincoating on FTO glass using a transparent gel electrolyte utilizing polyvinyl alcohol

Technical Contents: TiO2 as electrical semi-conductor, energy band model, band gap, Eg, electrochemical elementary processes at the electrodes, determining factors for the open circuit voltage and the short-circuit current of a cell, chemical elementary processes during sensibilisation; relation: particle structure and color of the substance as well as the relation energy of the light quanta and color of the light

Scope: Electro chemistry (galvanic cells; conduction of electricity in metals, solutions and semi-conductors); energetics (relation: color-λ-E of photons and color-Eg in nano particles); physics: electrical characteristics and circuits; chemistry/physics: nano structured materials

References

2015
Michael W. Tausch
 
Photoprozesse in der Lehre der Naturwissenschaften
Praxis der Naturwissenschaften - Chemie in der Schule, 64(1):5--9
2015C. Bohrmann-Linde; S. Spinnen; P. Sahling
Von der Babywindel zur transparenten Solarzelle - neue photogalvanische Zellen mit Nano-Titandioxid
Praxis der Naturwissenschaften - Chemie in der Schule, 64(1):10--15
/fileadmin/Chemie/chemied...babywindel-solarzelle.pdf
2014
Michael W. Tausch; M. von Wachtendonk; Claudia Bohrmann-Linde; Simone Krees
 
CHEMIE 2000+ Qualifikationsphase
 
Publisher: C.C.Buchner, Bamberg
2013
Claudia Bohrmann-Linde; Michael W. Tausch; Frederic Posala; D. Nietz
 
Akku leer? Licht an! - Photoelektrochemische Lichtenergiekonversion und -speicherung
Praxis der Naturwissenschaften - Chemie in der Schule, 63(5)
2007
Michael W. Tausch; Magdalene von Wachtendonk; Claudia Bohrmann-Linde; P. Krollmann; W. Schmitz; J. Wambach
 
CHEMIE 2000+ Gesamtband mit Kompendium für das Abitur
 
Publisher: C.C.Buchner, Bamberg
2003
Michael W. Tausch
 
1 mol Quanten? - Ja bitte, aber blaue
Praxis der Naturwissenschaften - Chemie in der Schule, 52(7):23
2003
 
2003
Claudia Bohrmann-Linde; Michael W. Tausch
 
Photogalvanic Cells for Classroom Investigations: A Contribution for Ongoing Curriculum Modernization
Journal of Chemical Education, 80(12):1471
2001
Claudia Bohrmann; Michael W. Tausch
 
Hypermedia-Baustein: Photoelektrochemische Zelle
Praxis der Naturwissenschaften - Chemie in der Schule, 50(7)
2001
Claudia Bohrmann; M. Twellmann; Michael W. Tausch
 
Vom galvanischen Element zur Solarzelle
Naturwissenschaften im Unterricht Chemie, 66(6)