Facile fabrication of BiVO4 modified TiO2 nanotube film photoanode and its photocathodic protection effect on stainless steel

Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Light

“…The variation of the potential of the metal coupled to the semiconductor photoanode is another considerable parameter used to investigate the photocathodic protection property of the photoanodes [ 57 ]. Photo-excitation of the photoanodes generates electrons, which are transferred to the surface of the steel and reduce its potential, and then protect the steel electrode.…”

Efficient photocathodic protection enabled by a multi-dimensional quaternary hybrid superstructure

“…When the light source is switched on, the photocurrents densities of the samples are positive, which can be ascribed to the fact that the electrons immigrate from the photoanode to 304SS electrode. After switching off the light source, the photocurrents of all the samples dropped immediately because of the rapid recombination of e -/h + pairs [89]. Interestingly, we found the ranking of the photocurrent densities as a function of the coupled photoanodes is as follows: AGSQT NRs (130 μA•cm -2 ) > Au-NPs/rGO/TNRs (120 μA•cm -2 ) > Au-NPs/SnO2 QDs/TNRs (80 μA•cm -2 ) > rGO/SnO2 QDs/TNRs (30 μA•cm -2 ) > TNRs (6 μA•cm -2 ).…”

“…The equivalent circuit model of individual 304SS (Part Ⅰ of Fig. 5f) can be described as Rs(Q1Rct) [89]. More specifically, Rs is solution resistance, Rct and Q1 represent the charge transfer resistance and CPE, respectively.…”

Zn3In2S6/TiO2 Nanocomposites for Highly Efficient Photocathodic Protection to Carbon Steel

“…Typically, when TiO 2 combines with the semiconductor of a narrow band gap, the light absorbance range could be extended. Wang et al have loaded BiVO 4 on the surface of TiO 2 nanotubes. This heterojunction has enhanced the light absorption to the visible-light region and shown the PCP effect on stainless steel.…”