High-efficiency photoelectrochemical cathodic protection performance of the TiO2/AgInSe2/In2Se3 multijunction nanosheet array

Intrinsic Mechanism Analyses of Significantly Enhanced Photoelectrochemical Performance of the Bi2MoO6/BiVO4 System

“…Figure b illustrates the Raman spectra of the prepared photoelectrodes. The peak at 815 cm –1 in the Raman spectrum of the BiVO 4 photoelectrode corresponds to the symmetric stretching mode of VO 4 2– , and those at 123 and 208 cm –1 are attributed to the bending mode of VO 4 , − which demonstrates the successful synthesis of BiVO 4 . The peaks at 715, 796, and 844 cm –1 of the Bi 2 MoO 6 photoelectrode are due to the stretching mode of Mo–O in octahedral MoO 6, − indicating the successful preparation of Bi 2 MoO 6 .…”

“…Since Fujishima and Honda reported that TiO 2 could split water to produce hydrogen using solar energy in 1972, the photoelectrochemical (PEC) technology has increasingly been considered as a potential one to provide green energy. More and more photocatalysts were used in the field of photoelectrochemistry, such as TiO 2 , − ZnO, − WO 3 , , and BiVO 4 . − TiO 2 and ZnO are more commonly used; however, they have wide band gaps. Semiconductors with wide band gaps normally have low efficiency of the absorption and utilization of light; therefore, they cannot effectively convert solar energy into chemical energy.…”

Ion‐Exchange Synthesis of ZnO/ZnSe/CdSe Core/Shell Heterostructured Nanowire Photoanodes toward High‐Performance Photocathodic Protection of 304 Stainless Steel

“…Construction of heterostructured semiconductor systems with well-matched band energies offers new opportunities to enhance spatial charge separations and ultimately boost photoelectrochemical properties. [8] Recently, various narrow bandgap semiconductors capable of absorbing visible light of solar spectrum have been composited with TiO 2 and ZnO to form heterojunctions for improving PCP performances, such as In 2 S 3 , [4] CdS, [9] Bi 2 S 3, [10] Sb 2 S 3 , [11] ZnIn 2 S 4 , [12] AgInSe 2 , [13] BiVO 4 , [14] TpBD-COF, [15] MoS 2 , [16] FeS 2 , [17] etc. In the meanwhile, geometric advantages of nanowire arrays over planar films have been demonstrated in the photoelectrochemical fields.…”

Cement-Based Thermoelectric Device for Protection of Carbon Steel in Alkaline Chloride Solution

“…In addition, R f of the carbon steel with cathodic protection was approximately 100 times that of the carbon steel without cathodic protection at 21 days. This reveals that the passive film on the carbon steel surface was strengthened after cathodic protection [54][55][56]. Therefore, the cathodic current generated by the cement-based thermoelectric device proved effective for the protection of carbon steel.…”

“…It can be observed that the location of the polarization curves moved toward the current reduction and potential increase direction when cathodic protection was applied on the carbon steel electrode. This reveals that both the cathode and anode reaction corrosion rates are reduced [51,55,56]. The calculated values of the electrochemical parameters, such as corrosion potential (E corr ), corrosion current density (i corr ), anodic Tafer slope (β a ), and cathodic Tafer slope (β c ) from the polarization measurements are listed in Table 4.…”