Polarization-induced internal electric field to manipulate piezo-photocatalytic and ferro-photoelectrochemical performance in bismuth ferrite nanofibers

Synergistic SERS enhancement and in situ monitoring of photocatalytic reactions in a plasmonic metal/ferroelectric hybrid system by the light-induced pyroelectric effect

“…2b, and the distinct bands observed at 69.32, 141.1, 169.8, 278.2, 333.1, 369.2, 465.2 and 554.5 cm À1 , which were assigned to E-1, A 1 -1, A 1 -2, E-3, E-4, E-5, E-7 and E-8 modes, respectively. 27,29,30 According to the group theory, these Raman active modes were in good agreement with those of the rhombohedrally distorted R3c space group for BiFeO 3 , and thus allowed the pyroelectric effect of these materials.…”

CdS nanocages@defective-CoNi-LDH with bilayer porous hollow frameworks toward optimized sono-photocatalytic performance

“…This can be attributed to the fact that the hollow structure and the metal defects on the surface are effective in transporting and separating photogenerated electron–hole pairs, which will improve the selectivity for H + reduction to H 2 . 44–46…”

“…This can be attributed to the fact that the hollow structure and the metal defects on the surface are effective in transporting and separating photogenerated electron-hole pairs, which will improve the selectivity for H + reduction to H 2 . [44][45][46] 2.4 Sono-photocatalytic mechanism Scanning Kelvin probe (SKP) tests were also performed to check the work functions of the composite samples. The objective is to conrm the work function by measuring the contact potential difference between the material under test and a comparison electrode.…”

Recent Advances in Ferroelectric Materials-Based Photoelectrochemical Reaction

“…Additionally, the alternative B-site of a transition metal element can diminish the valence state fluctuations of Fe 3+ , and both of above substitutions can decrease the leakage current of BiFeO 3 [ 75 ]. You et al [ 76 ] reported the modify BiFeO 3 nanofibers by A-site Pr ion and B-site Mn ion co-substitution, and as presented in Figure 6 a, under no-poling condition, the photocurrent density was effectively enhanced from 8.2 μA⋅cm 2 , 17.2 μA/cm 2 , 31.9 μA/cm 2 to 72.5 μA/cm 2 for BiFeO 3 , BiPrFeO 3 , BiFeMnO 3 and BiPrFeMnO 3 photoelectrodes under one sun illumination, respectively. Furthermore, the PEC performance of all these photoelectrodes increased when the samples were negatively poled and the current density of BiPrFeMnO 3 photoelectrode reached to 131.2 μA/cm 2 .…”