One-step preparation of novel Bi-Bi2O3/CdWO4 Z-scheme heterojunctions with enhanced performance in photocatalytic NH3 synthesis

Simultaneous photocatalytic degradation of methylene blue and methyl orange using a green synthesized Zn0.98Mn0.02O/BiOCl nanocomposite

“…Comparison of % Photodegradation of MB and MO by using Zn 0.98 Mn 0.02 O/BiOCl with previously reported photocatalytic materials the conduction band of BiOCl is raised and a type-II heterojunction is established between both semiconductors as shown in Fig.8 [60][61][62]. In BiOCl under solar illumination, electrons are also jumped from the VB to the CB, and then holes are also produced.…”

“…8. 60–62 In BiOCl under solar illumination, electrons are also jumped from the VB to the CB, and then holes are also produced. The electrons in the CB of BiOCl move towards the CB of Zn 0.98 Mn 0.02 O to reduce the dissolved oxygen into superoxide anionic radical O 2 ˙ − better as compared to pure samples of Zn 0.98 Mn 0.02 O and BiOCl.…”

“…5 mM of scavengers such as BQ, TBA, AgNO 3 and Na 2 -EDTA were added into the dye solution followed by the addition of the nanocomposite (Zn 0.98 Mn 0.02 O/BiOCl) to trap the superoxide anion radicals (O 2 À ), hydroxyl radicals (OH ), electrons (e À ) and holes (h + ), respectively. [59][60][61][62] The photodegradation of both the methylene blue and methyl orange dyes was checked under sunlight using the Zn 0.98 Mn 0.02 O/BiOCl nanocomposite in the presence of scavengers. , OH and h + play a primary role and e À play a secondary role for the photocatalytic degradation of methylene blue and methyl orange.…”

Enhanced oxidative degradation of tetracycline by visible light-promoted g-C3N4 modified Cu3(OH)4SO4/Cu7S4 composites under an air atmosphere

“…6A), the CSG heterojunction exhibited the highest photocurrent intensity, suggesting that the CSG heterojunction can enhance charge separation. 39,40 Fig. 6B shows representative Nyquist plots of the impedance response of the samples.…”

CdIn2S4 microspheres embedded with mesoporous Zn-doped g-C3N4 ultrathin nanosheets for efficient photocatalytic hydrogen evolution

“…For example, He et al successfully prepared the type II heterojunction of Bi 4 O 5 Br 2 /CdWO 4 26 and BiPO 4 /Bi 4 O 5 Br 2 , 27 which effectively improved the separation efficiency of electron–hole pairs and exhibited exceptional photocatalytic performance under simulated solar light. Moreover, a heterojunction with a Z-scheme 28,29 and S-scheme 30,31 charge transfer process can efficiently separate the photogenerated electrons and holes into two photosystems through an electron mediator, helping spatially isolate the oxidation and reduction reaction sites and enhancing the photocatalytic activity.…”