Ultrasound waves at the service of photocatalysis: From sonochemical synthesis to ultrasound-assisted and piezo-enhanced photocatalysis

Z-Scheme CdIn2S4/Bi2WO6 Heterojunction for High Piezo-Photo Synergetic Performance

“…In this case, the electrons transfer from the CB of CIS to the CB of BWO and holes transfer from the VB of BWO to the VB of CIS. However, if CIS/BWO follows the type II system, the VB value of CIS (0.95 eV vs NHE) is lower than E θ (•OH/OH − ) (1.99 eV vs NHE), 48 which is inconsistent with the free radical trapping experiments and EPR results. Thus, it can be inferred that CIS/BWO composites may follow the Z-type charge transfer mechanism (Figure 11b).…”

Ultrasound assisted electrodeposition of photocatalytic antibacterial MoS2-Zn coatings controlled by sodium dodecyl sulfate

“…The primary issued remained to be solved during the MoS 2 –Zn coating synthesis is the dispersion of MoS 2 , thus several assistance methods should be introduced. Previous studies showed that ultrasound not only showed dramatic promotion on the synthesis of photocatalyst [39] , but also played an important role in the electrodeposition of Zn and the composite of photocatalytic Zn materials. It is reported that ultrasound-assisted electrodeposition of alloys and composites could promote the dispersion of particles in the electrolyte solution due to microturbulence, microjets, shock waves, and disruption of van der Waals forces [40] .…”

Aluminum-Porphyrin Metal–Organic Frameworks for Visible-Light Photocatalytic and Sonophotocatalytic Cr(VI) Reduction

“…Fortunately, adding external stimuli during the photocatalytic process may promote mass-transfer processes and accelerate the progress of the photocatalytic reactions. For example, sonophotocatalysis, a combination of sonochemistry and photochemistry, can promote collision between the substrate and catalyst and avoid the aggregation of the catalyst. , With the help of semiconductor catalysts, sonophotocatalysis has been widely used in the treatment of organic pollutants and biomass conversion. − For the MOF-based catalytic system, due to the cavitation phenomenon induced by ultrasonic waves, the regeneration of active sites on the MOF surface and the migration of substrates will be accelerated, as well as the utilization of photogenerated charges also will be greatly promoted …”