A novel Z-scheme Ag3VO4/BiVO4 heterojunction photocatalyst: Study on the excellent photocatalytic performance and photocatalytic mechanism

Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution

“…The fluorescence spectra with the excited wavelength of 365 nm was conducted to study the separation efficiency of photo-induced charge carriers, as shown in figure 5(b) [36]. It could be seen that the STO(0.36) can be excited, and the fluorescence intensity is the highest among the tested samples, which means the wellcrystallized pristine STO is able to generate considerable amount of excitons, while cannot be utilized owe to the wide band-gap.…”

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

“…Moreover,t he higher transient photocurrent density (Supporting Information,Figure S19a) and smaller Nyquist plots (Supporting Information, Figure S19b) arc radius over PCN@HP(0.4) indicated the faster charge carrier transfer and separation in PCN@HP(0.4) than PCN and HP. [26] Thee lectron paramagnetic resonance (EPR) spectra were illustrated in Figure 4d,a nd all the samples showed one single Lorentzian line centered at a g value of around 2.003. Compared with bare PCN and HP,the sharply enhanced EPR signal of PCN@HP(0.4) indicated the accelerated electron delocalization and the increased mobility, [27] which would generate more unpaired electrons for the greatly improved photocatalytic activity for HER from pure water.…”

Visible‐Light‐Driven Electrocatalytic Oxygen Evolution Reaction: NiFe2O4/NiFe–Layered Double Hydroxide Z‐Scheme Heteronanosheet as a Model

“…The photogenerated electrons are transferred from NiFe 2 O 4 to NiFe–LDH, resulting in an efficient space separation of photoinduced charge carriers. [ 28,29 ] The accelerated electron transfer endows NiFe–LDH with electron‐rich Ni and Fe promote their early oxidation to higher valence states and facilitate the deprotonating step. [ 30 ] Meanwhile, due to the relative low VB position of NiFe 2 O 4 is more negative than the potential of water oxidation, the abundant photogenerated holes stored in NiFe 2 O 4 cannot oxidize water to oxygen, but are beneficial for the formation of highly oxidative metal ions and may accelerate the fast absorption of OH − to the active sites.…”