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Comparison of benzene and toluene photodegradation under visible light irradiation by Ba-doped BiFeO₃ magnetic nanoparticles with fast sonochemical synthesis

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Photochemical & Photobiological Sciences Vol -15

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Solid-state photoelectrochemical cell with TiO₂ nanotubes for water splitting

Content Provider	Royal Society of Chemistry (RSC)
Author	Xu, Kaiqi Norby, Truls Chatzitakis, Athanasios
Copyright Year	2017
Abstract	We have fabricated and tested a photoelectrochemical (PEC) cell where the aqueous electrolyte has been replaced by a proton conducting hydrated Nafion® polymer membrane. The membrane was sandwiched between a TiO2-based photoanode and a Pt/C-based cathode. The performance was tested with two types of photoanode electrodes, a thermally prepared TiO2 film on Ti foil (T-TiO2) and a nanostructured TiO2 films in the form of highly ordered nanotubes (TNT) of different lengths. Firstly, photovoltammetry experiments were conducted under asymmetric conditions, where the anode was immersed in deionized water, while the cathode was kept in ambient air. The results showed a high incident photon-to-current efficiency (IPCE) of 19% under unassisted conditions (short-circuit, 0 V vs. cathode) with short TNT (ca. 1 μm) under 4 mW cm−2 illumination with UV-A rich light. Secondly, the deionized water was replaced by 0.5 M Na2SO4 and now the performance was higher with longer nanotubes, assigned to increased ionic conductivity inside the tubes. An unassisted (0 V) IPCE of 33% was achieved with nanotubes of ca. 8 μm. The presented solid-state PEC cell minimizes the electrode distance and volume of the device, and provides a way towards compact practical applications in solar water splitting.
Starting Page	10
Ending Page	16
Page Count	7
File Format	HTM / HTML PDF
ISSN	1474905X
Volume Number	16
Issue Number	1
Journal	Photochemical & Photobiological Sciences
DOI	10.1039/c6pp00217j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Water splitting Electrode Anode Hydrogen Cathode Trinitrotoluene Polymer Ultraviolet PEC List of pedophile and pederast advocacy organizations Electrolyte Nafion Micrometre Photoelectrochemical cell High Incident Purified water
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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