Synthetic Bi2O2CO3 nanostructures: Novel photocatalyst with controlled special surface exposed

BiOCl/ultrathin polyaniline core/shell nanosheets with a sensitization mechanism for efficient visible-light-driven photocatalysis

“…1 that the strong absorption peak at 554 nm for the RhB solution steadily decreases and shows a blueshift with increasing irradiation time. The initial orange color of the solution gradually turned to transparent because the RhB was photodegraded to intermediates under the visiblelight irradiation and then the intermediates were themselves partially photodegraded [38]. This further indicates that the BiOCl/PANI composites exhibit excellent photocatalytic activity for RhB decomposition under visiblelight irradiation.…”

A Novel Visible– Light Driven Photocatalyst: Ethylene Glycol–Citrate Sol–Gel Synthesis, Microwave–Assisted Calcination, and Photocatalytic Efficiency

“…This can also be evidenced by the lowering in the photocatalytic activity beyond this value of Mn content (k app = 6.96×10 -3 min -1 for x=0.13). However, the decreased photocatalytic efficiency of γ −BIMNVOX.x catalyst for x=0.13, despite its highest ability to absorb visible light(E g =2.05 eV), may be attributed to the creation of oxygen vacancies at apical positions of the perovskite vanadate layers [16,17]. These apical vacancies are not only considered as inactive sites on the photocatalyst surface, they may also play a role in the fast recombination of the electron-hole pairs, and thereby slowing down the photocatalytic degradation.…”

“…These apical vacancies are not only considered as inactive sites on the photocatalyst surface, they may also play a role in the fast recombination of the electron-hole pairs, and thereby slowing down the photocatalytic degradation. The photocatalytic mechanism of CV dye degradation using the BIMNVOX.x catalyst under visible light irradiation can be explained by the fact that the Mn doping initially narrows the band gap of the photocatalysts to enhance visible light absorption [17]. The CV dye molecules are then adsorbed onto the perovskite vanadate layers as a result of a coulombic interaction between negatively charged oxygen atoms of the vanadate layers and the dye molecules with positively conjugated chromophore.…”

Study of the sulfurized (BiO)2CO3 as efficient visible-light induced photocatalyst

“…layers and CO 3 2-layers [22]. Zheng et al [23] firstly reported that the Bi 2 O 2 CO 3 with exposed {001} plane has the excellent photocatalytic activity for photocatalytic degradation of Rhodamine (RhB) under the solar light. After that, as a novel kind of photocatalyst, (BiO) 2-CO 3 material have been paid much more attention due to its promising chemical stability and good photocatalytic activity [24].…”

“…After that, as a novel kind of photocatalyst, (BiO) 2-CO 3 material have been paid much more attention due to its promising chemical stability and good photocatalytic activity [24]. Although some studies indicated that the photocatalytic activity of (BiO) 2 CO 3 can be further improved by modulating its microstructure [25][26][27], however, pure (BiO) 2 CO 3 only responds to ultraviolet (4 % fraction of solar light) due to its large band gap (2.87-3.58 eV), which restricts its practical application. To overcome the drawbacks, various efforts have been attempted to enhance the photocatalytic efficiency of (BiO) 2 CO 3 , such as (BiO) 2 CO 3 /BiVO 4 [28], (BiO) 2 CO 3 / BiOI [29], (BiO) 2 CO 3 /Bi 2 S 3 [30,31], metal nanoparticles (Ag, Au, Bi) deposited (BiO) 2 CO 3 [32][33][34][35] and nonmetal ions (N, Si, C) doping [36][37][38][39].…”