Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a bimetallic Fe–Co/SBA-15 catalyst for the degradation of Orange II in water

Excellent Performance of Fe78Si9B13 Metallic Glass for Activating Peroxymonosulfate in Degradation of Naphthol Green B

“…Figure 1b presents the UV-vis DRS patterns of the as-received, fifth and tenth run reused Fe 78 Si 9 B 13 ribbons. It is known that the tetrahedral or octahedral isolated iron species will cause the bands between 200 and 300 nm, while the octahedral irons in the form of Fe 3+ x O y complexes result in the bands between 300 and 450 nm [60,61]. In addition, large iron oxide aggregates may lead to the bands greater than 450 nm [60,61].…”

“…Compared with the as-received Fe 78 Si 9 B 13 ribbons, the obvious peaks between 200 and 270 nm of the fifth and tenth run reused ribbons indicate that the isolated iron species still distribute homogeneously on the surface, and peaks between 300 and 360 nm are due to octahedral irons presenting as Fe 3+ x O y complexes form. the tetrahedral or octahedral isolated iron species will cause the bands between 200 and 300 nm, while the octahedral irons in the form of Fe 3+ xOy complexes result in the bands between 300 and 450 nm [60,61]. In addition, large iron oxide aggregates may lead to the bands greater than 450 nm [60,61].…”

“…the tetrahedral or octahedral isolated iron species will cause the bands between 200 and 300 nm, while the octahedral irons in the form of Fe 3+ xOy complexes result in the bands between 300 and 450 nm [60,61]. In addition, large iron oxide aggregates may lead to the bands greater than 450 nm [60,61]. In this work, the peaks between 200 and 350 nm of the as-received Fe78Si9B13 ribbons indicate isolated iron species are distributed homogeneously, while no obvious peak after 450 nm means no iron oxide aggregates on the surface.…”

Accelerated decomposition of Oxone using graphene-like carbon nitride with visible light irradiation for enhanced decolorization in water

“…Even though Oxone can self-decompose to generate sulfate radicals (e.g., SO 4 −• ) that exhibit the redox potential of +2.5 to +3.1 V [9], the self-decomposition is extremely slow. Therefore, a number of approaches have been employed to accelerate the Oxone decomposition such as heat-activation [10], UV irradiation [11], sonication [12] and addition of catalysts [7,[12][13][14][15][16]. Nevertheless, UV irradiation, heat and sonication require intensive energy input and therefore the activation of oxidants using heterogeneous catalysts has attracted more attention.…”

Effect of Silica on the Ultrasonic/Persulfate Process for Degradation of Acid Black 1 in Aqueous Solutions

“…High cost, long retention time, and generation of toxic byproducts are drawbacks to the widespread use of some of these elimination processes. Nowadays, AOPs have been attracting much attention due to their ease of use, high efficiency and being economical (8)(9)(10). In recent years, the use of sulfate radicals has been considered as an effective AOP method to remove organic contaminants.…”