Facile ball-milling synthesis of WO3/g-C3N4 heterojunction for photocatalytic degradation of Rhodamine B

WO3/MIL-125 (Ti) composite material for enhancing the reduction of Cr(vi) under visible light

“…The bandgap energy of the samples was evaluated using the Tauc curve: ( αhν ) = A ( hν − E g ) n /2 , where α , E g , h , n and A are the absorption coefficient, bandgap energy, Planck's constant, optical frequencies, and constants. 33,34 The band gaps of WO 3 and MIL-125 (Ti) were 2.88 eV and 3.30 eV, respectively. The band gap of W90M10 was close to that of WO 3 , which was 2.78 eV.…”

“…Planck's constant, optical frequencies, and constants. 33,34 The band gaps of WO 3 and MIL-125 (Ti) were 2.88 eV and 3.30 eV, respectively. The band gap of W90M10 was close to that of WO 3 , which was 2.78 eV.…”

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“…10b). The final VB position versus normal hydrogen electrode (NHE) can be calculated by the following formula [38] The potential of CB is more negative, then the photogenerated electrons in the CB could reduce O 2 to O 2 − radicals. Meanwhile, the VB potential is more positive than the standard oxidation potential of H 2 O/OH (+2.72 eV vs. NHE), thus generating OH radicals [39].…”

g-C3N4 nanosheet supported NiCo2O4 nanoparticles for boosting degradation of tetracycline under visible light and ultrasonic irradiation

“…Different techniques have been adopted for g-C 3 N 4 doping, such as thermal polycondensation synthesis, 29 solid phase synthesis, 30 a solvothermal method, 31 and ball milling. 32,33 Among them, the ball milling technique is the most suitable method for scaled production because it is simple, efficient and does not require organic solvents. More importantly, the ball milling method can significantly enhance the active sites and stability of nanocatalysts, ideal for the preparation of highly efficient nanocatalysts.…”