Boosting the Photoelectrochemical Water Oxidation Performance of TiO2 Nanotubes by Surface Modification Using Silver Phosphate

Photoelectrocatalytic approaches are fascinating options for long-lasting energy storage through the transformation of solar into electrical or hydrogen fuel. Herein, we report a facile method fabricating composite electrode well-aligned TiO2 nanotubes (TNTs) decorated with photodeposited silver phosphate (Ag3PO4) nanoparticles. Assessment optical, physiochemical and photoelectrochemical features demonstrated that fabricated TNTs/Ag3PO4 films showed substantially boosted photocurrent response 0.74 mA/cm2, almost 3-fold enrichment in comparison pure TNTs. Specifically, applied bias photon-to-current efficiency was 2.4-fold superior to TNTs electrode. In these photoanodes, introduction Ag3PO4 over enhanced light absorption improved charge transfer surface conductivity. The developed process can be generally designing developing efficient contact interfaces between photoanodes numerous cocatalysts.