Facile fabrication of MoO3/g-C3N4 p-n junction for boosted photocatalytic elimination of 2,4-D under natural sunlight exposure

Comparative study of photocatalysis with bulk and nanosheet graphitic carbon nitrides enhanced with silver

“…The highest photodegradation activities (after 3 h of irradiation) were achieved for the sample with the 1.5 and 3 wt% Ag. A study by Alenazi and co-authors 77 , 78 presented a similar observation for the surface modification of g-C 3 N 4 material with Mo 6+ and W 6+ in the composites Mo 6+ @g–C 3 N 4 and W 6+ @g-C 3 N 4 , respectively, at concentrations between 0.5 and 3 wt%. The Mo 6+ @g–C 3 N 4 composites were tested to remove the potential pollutant 2,4-dichlorophenoxyacetic acid under natural sunlight 77 .…”

“…A study by Alenazi and co-authors 77 , 78 presented a similar observation for the surface modification of g-C 3 N 4 material with Mo 6+ and W 6+ in the composites Mo 6+ @g–C 3 N 4 and W 6+ @g-C 3 N 4 , respectively, at concentrations between 0.5 and 3 wt%. The Mo 6+ @g–C 3 N 4 composites were tested to remove the potential pollutant 2,4-dichlorophenoxyacetic acid under natural sunlight 77 . The W 6+ @g-C 3 N 4 composites were tested for removing chlorophenol derivatives in natural sunlight exposure 78 .…”

“…10 and 11 , and this finding is further supported by estimated kinetic constants (Table 2 ). The pseudo-first-order reaction equation 26 , 77 , 78 ln(C/C 0 ) = k cal t, where C 0 is the initial concentration of AO7, C is the concentration of AO7 at the time t of the measurement, and k is the kinetic constant, was used to derive the calculated kinetic constants (k cal t) for all materials. The obtained kinetic constants for silver-modified g-CN bulk materials were 4.4–8.8 × 10 −3 min −1 (under UV lamp) and 2.7–10.5 × 10 −3 min −1 (under VIS lamp).…”

A Brief Review of MoO3 and MoO3-Based Materials and Recent Technological Applications in Gas Sensors, Lithium-Ion Batteries, Adsorption, and Photocatalysis

“…The heterostructures also provide large interfacial areas for the occurrence of redox reactions [112]. Thereby, heterostructured systems doped with Fe 2 O 3 [15,111], rGO [15], SnO 2 [115], Cu 2 S [116], WO 3 [110,115], CdTiO 3 [117], SiO 2 [118], g-C 3 N 4 [58,112,119], NiO [120], polypyrene [121], etc., and also metal doping with Ag [118] were synthesized in the last years for photocatalytic applications such as dye and antibiotic degradation and heavy metal reduction (Cr 6+ ), showing excellent performance for RhB [58,112,118], MB [15,115,116,120,122], tetracycline [111], acetaminophen [121], and metronidazole photodegradation under visible light irradiation [118], besides aspirin degradation under UV irradiation [117] and MB and 2,4-dichlorophenol under sunlight irradiation [119]. The electronic band of the MoO3 and crystal structure have an important effect on photocatalytic performance [19].…”

Enhanced peroxymonosulfate-mediated photocatalytic pesticide degradation by a novel stable multi-metal ferrite (Mg, Cu, Fe) anchored on g-C3N4

“…However, in recent years, there have been growing concerns about their prompt migration, chemical stability in soil and water resources, and resistance to biotic degradation and leaching. [2][3][4] 2,4-D has adverse effects on human health, including reproductive damage, neurotoxicity, and endocrine disruption. 5 Thus, the International Agency for Research on Cancer (IARC) has categorized 2,4-D as "possibly carcinogenic to humans" (Group 2 B).…”