Enhanced photo-piezo-catalytic properties of Co-doped Ba0.85Ca0.15Zr0.1(Ti1-xCox)0.9 ferroelectric ceramics for dye degradation

Enhanced piezoelectricity and spectral absorption in Nd-doped bismuth titanate hierarchical microspheres for efficient piezo-photocatalytic H2 production and pollutant degradation

“…Moreover, combining the effect of light and ultrasonic excitations remarkably enhanced the degradation of RhB solution, reaching 97.5% within 8 minutes. The trend of the kinetic curve is consistent with linear fitting kinetic curve trends, 39,40 and the resulting k and R 2 values are summarized in Fig. 4(b).…”

SnFe 2O 4/ZnIn 2S 4/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

“…As shown in Fig. 12a, four characteristic peaks attributed to DMPO-•O2radicals can be observed over SFO and ZIS, which may thank to their more negative CB potential (-0.68 and -0.59 V vs. NHE) in comparison with the standard reduction potential of O2/•O2 -(-0.33 V vs. NHE) [58]. As presented in Fig.…”

“…As presented in Fig. 12b, the featured signals of DMPO-•OH with an intensity ratio of 1:2:2:1 can be hardly observed over pristine SFO, due to the band edge position of EVB in SFO (1.17 V vs. NHE) is at more negative potential than that of the standard •OH/OHredox potential (1.90 V vs. NHE) [58]. Simultaneously, since the EVB (1.91V vs. NHE) in ZIS is close to the standard •OH/OH -, only a slight DMPO-•OH characteristic peak can be observed on the pure ZIS, indicating that the small amount of •OH radicals were generated on the surface of the ZIS samples.…”

Effect of Poling and Porosity on BaTiO3 for Piezocatalytic Dye Degradation

“…These materials are able to convert mechanical energy into electrical energy via the direct piezoelectric effect 4,5 . Since these materials exhibit a high efficiency for energy conversion, the processes of piezocatalysis has emerged that uses the direct piezoelectric effect as an advanced oxidation process [6][7][8][9][10][11][12] . During piezocatalysis, or the piezo-electric-chemical coupling process, the charge generated under mechanical stimulation are separated and react with O2/OHto give rise to strong oxidizing active species, which are accountable for weakening organic contaminants [13][14][15] .…”