Visible-light-driven activation of sodium persulfate for accelerating orange II degradation using ZnMn2O4 photocatalyst

Construction of Cu7S4@CuCo2O4 Yolk–Shell Microspheres Composite and Elucidation of Its Enhanced Photocatalytic Activity, Mechanism, and Pathway for Carbamazepine Degradation

“…[ 27 ] For the high‐resolution spectrum of O 1s, the peaks can be deconvoluted into two peaks at binding energies of about 529.3 and 531.2 eV in CCO, which could be attributed to the metal‐oxygen bonds and chemisorbed oxygen, respectively (Figure 1f). [ 28 ]…”

“…Hence, we could estimate their E fb values relative to the normal hydrogen electrode (NHE) potential at pH 6.8 to be 0.297 and 0.597 V (vs NHE) for the CCO and CS, respectively, using Equation (). Moreover, according to Zhu et al., [ 28 ] the E fb edge positions are ≈0.2 V lower than the E VB edge of the p‐type semiconductor (CS) but higher than the E CB edge of the n‐type semiconductor (CCO). Hence, we could estimate the E VB of CS and E CB of CCO to be 0.797 and 0.097 V (vs NHE), respectively.…”

“…[27] For the high-resolution spectrum of O 1s, the peaks can be deconvoluted into two peaks at binding energies of about 529.3 and 531.2 eV in CCO, which could be attributed to the metal-oxygen bonds and chemisorbed oxygen, respectively (Figure 1f). [28] Furthermore, the electron binding energy of an element originates from the strong Coulomb attraction between the atom's outer electrons and the atomic nucleus. Meanwhile, the changes in element-binding energy can directly reflect electron density changes.…”

Peroxymonosulfate enhanced photoelectrocatalytic degradation of 17α-ethinyl estradiol

“…Sulfate radical oxidation processes (SR-AOPs) have recently gained popularity due to their high oxidation potential (2.5-3.1 V). Sulfate radicals can be generated following the activation of persulfate and monosulfate compounds through different methods such as light irradiation [11,12], heat [13,14], ultrasound [15], and catalytic materials derived from carbon [16] and metals [17]. With novel and cheaper activation methods, the generation of sulfate radicals has become non-complex and economical.…”

Engineering stable construction of MnCo2O4 yolk-in-double-shell amalgamated with bio-synthesized ZnMn2O4 nanoparticles for superior artificial CO2 reduction

“…16,17 However, promising visible-light driven materials such as ZnMn 2 O 4 (ZMO) with appreciable reduction capability (∼−1.7 V) have received little attention mainly because of their relatively large particle size, preventing their intimate contact with other semiconductors in the heterostructure. [18][19][20] Additionally, the use of expensive and hazardous chemicals during the synthesis of ZMO hinders its practical application. Alternatively, phyto-mediated bio-synthesis methods have attracted signicant attention to overcome the irreversible toxicity associated with the synthesis of ZMO.…”