Synthesis of α-β Bi2O3 heterojunction photocatalyst and evaluation of reaction mechanism for degradation of RhB dye under natural sunlight

Improved photoelectrode performance of chemical solution-derived Bi2O3 crystals via manipulation of crystal characterization

“…Moreover, according to the earlier bandgap energy results of the Bi 2 O 3 lms, the VB potentials of 10-Bi 2 O 3 and 13-Bi 2 O 3 could be calculated as 2.88 eV and 2.82 eV (vs. NHE) according to the equation E CB ¼ E VB À E g , respectively, which also match well with the values in the literature. 50,51 Notably, 10S- Furthermore, the carrier density of the oxide semiconductor is inversely proportional to the slope of the straight-line portion in the Mott-Schottky plot according to the proposed relationship of 1/C 2 versus the applied potential. 52 The tangent slope size in Fig.…”

Enhanced photocatalytic performance of ZnO/AgCl composites prepared by high-energy mechanical ball milling

“…The active radicals in the aqueous solution generated by ZnO/AgCl attack the N-deethylation intermediates, thus producing some primary oxidation products 70. When the four ethyl groups in the RhB molecule were degraded, decarboxylating and ringopening might be occurring gradually under the attack of the active radicals in the solution, resulting in the formation of intermediates with smaller molecular weights and the solution becoming colorless gradually 71. Finally, the substances with smaller molecular weights might be decomposed into H 2 O and CO 2 72.…”

WO3/Ag2CO3 Mixed Photocatalyst with Enhanced Photocatalytic Activity for Organic Dye Degradation

“…8,75 When the four ethyl groups in the RhB molecule are degraded, decarboxylating and ring opening may be occurred gradually under the attacking of the active radicals in the solution, resulting in the formation of intermediates with a smaller molecular weight, and the solution becomes colorless gradually. 76 Finally, the substances with a smaller molecular weight were decomposed into H 2 O and CO 2 . 75,77,78 Besides deethylation, hydroxylation may also be involved in the photodegradation of RhB, since two possible hydroxylated intermediates with m/z values of 475.3 and 349.2 were observed in the mass spectroscopy (Figure 10b and Table S1).…”

“…Upon light irradiation, the N -deethylation intermediates were generated, and the mass peaks at m / z values of 415.2, 387.2, and 359.3 were identified as N , N , N ′-tri-ethylated rhodamine, N , N ′-diethylated rhodamine, and N -ethylated rhodamine molecules . The active radicals in the aqueous solution generated by WO 3 /Ag 2 CO 3 –5% attack the N -deethylation intermediates, thus producing several primary oxidation products. , When the four ethyl groups in the RhB molecule are degraded, decarboxylating and ring opening may be occurred gradually under the attacking of the active radicals in the solution, resulting in the formation of intermediates with a smaller molecular weight, and the solution becomes colorless gradually . Finally, the substances with a smaller molecular weight were decomposed into H 2 O and CO 2 . ,, Besides deethylation, hydroxylation may also be involved in the photodegradation of RhB, since two possible hydroxylated intermediates with m / z values of 475.3 and 349.2 were observed in the mass spectroscopy (Figure b and Table S1).…”