Simultaneous remediation of methylene blue and Cr(VI) by mesoporous BiVO4 photocatalyst under visible-light illumination

In Situ Coupling Carbon Defective C3N5 Nanosheet with Ag2CO3 for Effective Degradation of Methylene Blue and Tetracycline Hydrochloride

“…The morphology of pristine g-C 3 N 5 is relatively smooth with a tightly stacked rock-like structure, whereas n-C 3 N 5 has a fluffy flake-like structure with a large number of mesopores and a significant reduction in planar size, indicating a tight overall structure of C 3 N 5 was successfully stripped. The nanosheet-like and mesoporous structures not only increased the specific surface area and active sites of the catalysts but also improved the visible light absorption and accelerated the transfer of photogenerated charges, thereby boosting photocatalytic activity [ 40 ]. The BET analysis further confirmed that thermal exfoliation is an effective way to fabricate C 3 N 5 nanosheets with a large specific surface area.…”

Simultaneous remediation of hexavalent chromium and organic pollutants in wastewater using period 4 transition metal oxide-based photocatalysts: a review

“…Exposure to high concentration of dyes may result in cystitis, irritation of the skin and digestive tract, respiratory and renal failure (Lellis et al 2019). Moreover, some of the dye-based pollutants are chemically stable and have high mobility, which can deteriorate the proliferation of aquatic organism and the ecosystem (Xie et al 2020a).…”

A UV-visible-NIR active smart photocatalytic system based on NaYbF4:Tm3+ upconverting particles and Ag3PO4/H2O2 for photocatalytic processes under light on/light off conditions

“…[13][14][15][16][17][18] Unfortunately, most of the best known and commonly used semiconductor oxide photocatalysts are wide band semiconductors (TiO 2 and ZnO, for example) and thus can only be photoactivated using ultraviolet (UV) radiation 17,[19][20][21][22][23][24] which is only around 5-6% of the solar spectrum. On the other hand, relatively narrow band photocatalysts (BiVO 4 , CdS, ZnSe, Ag 3 PO 4 and Ag 2 O) exhibit photocatalytic activity under UV and visible (Vis) light, [25][26][27][28] but often suffer from fast electron-hole recombination and limited photostability. For example, Ag 3 PO 4 has been found to exhibit high photoactivity and thus high contaminant removal performance, but it shows low photostability and is photo(self)reduced (Ag + + e À -Ag) during the photocatalytic process by the photoexcited conduction band (CB) electrons, [29][30][31][32] thus limiting the recyclability of the photocatalysts.…”