Ag modified ZnO microsphere synthesis for efficient sonophotocatalytic degradation of organic pollutants and CO2 conversion

Nanostructured Composite of Starch/Silica Hybrid Decorated with Titanium Oxide Nanoparticles for Photocatalytic, Sonocatalytic, and Sonophotocatalytic

“…The synthesis and design of non-precious and efficient sonophotocatalyts by an environment-friendly technique are requisites for environmental remediation. [7] By regulating the properties of materials, we try to overcome the existing photocatalytic challenges in the photocatalytic treatment of wastewater, which are high rate of electron-hole recombination, wide bandgap, low activity in the presence of visible light, and instability of photocatalysts in process conditions. [8] Khan et al, [9] illustrate that the sonophoto activities measured at 40 kHz frequency demonstrated for silver/zinc oxide microsphere exhibited 55-times improved sonophoto activities for acid red 17 (AR-17) degradation compared with virgin ZnO microsphere.…”

“…These unprecedented sonophoto activities are credited to ultrasonic waves, rapid charge separation, and promoted O 2 activation. [7] Otherwise, Ali et al [8] reported that Bi 2 O 3 -ZnO photocatalysts with various amounts of copper phthalocyanine used as photosensitizer agent photocatalysts in sonophotocatalytic degradation of methyl orange (MO). The results showed that the decomposition performance was in the following order: sonophotocatalysis (30 W ultrasonic power) photocatalysis sonophotocatalysis (60 W ultrasonic power) sonolysis.…”

“…The synthesis and design of non‐precious and efficient sonophotocatalyts by an environment‐friendly technique are requisites for environmental remediation. [ 7 ] By regulating the properties of materials, we try to overcome the existing photocatalytic challenges in the photocatalytic treatment of wastewater, which are high rate of electron–hole recombination, wide bandgap, low activity in the presence of visible light, and instability of photocatalysts in process conditions. [ 8 ]…”

Advances in ultrasound-assisted synthesis of photocatalysts and sonophotocatalytic processes: A review

“…The resulting H 2 O 2 can subsequently interact with radicals that diffuse from zone 1, augmenting the levels of reactive free radicals like ·OH and ·OOH, which serves to amplify the degradation efficiency. 26 , 33 , 34 The third reaction site occurs in the ambient temperature bulk liquid, but it does not exhibit a primary sonochemical reaction. However, a few radicals and H 2 O 2 may reach this area and interact with the existing pollutants present.…”

Charge transfer in TiO2-based photocatalysis: fundamental mechanisms to material strategies

“…[5][6][7] Furthermore, the establishment of large manufacturing industries, including cosmetic industry, [8][9][10] petrochemical industry, [11][12][13] plastic industry, and leather industry, as well as varnishes, medicines, 14,15 antibiotics, 16 insecticides, herbicides, dyes, [17][18][19] clothes, perfumes, explosives, sound systems, batteries, slaughter houses, and heavy metals, [20][21][22] for the purpose of making human life comfortable and relaxed have disturbed normal aquatic and terrestrial life in the sense that these industries have added their own contribution towards environmental pollution especially drinking water and atmospheric pollution by disposing of their hazardous residues and used-water directly into water streams. [23][24][25][26][27][28] Therefore, new technologies are urgently needed to address these problems efficiently. † These authors contributed equally.…”