Facile construction of 3D hierarchical flake ball-shaped γ-AgI/Bi2WO6 Z-scheme heterojunction towards enhanced visible-light photocatalytic performance

Enhanced photocatalytic activity of AgBr photocatalyst via constructing heterogeneous junctions with reduced graphene

“…Therefore, the discovery for new effective visible-light responsive photocatalysts is indispensable for future applications [8,15]. Silver halide (AgX, X = Cl, Br, I),which is a photocatalytic material with a narrow band gap, exhibits great photocatalytic performances for organic pollutant removal in the presence of visible light [11,[15][16][17]. However, pure AgX inevitably forms silver atoms under visible-light irradiation because its photogenerated electron tends to bond with an interstitial silver ions by absorbing incident light, and its photocatalytic efficiency will be inhibited by the photodecomposition [18][19][20].…”

“…Recently, Graphene oxide (GO) and reduced graphene oxide (rGO) has drawn more and more attention from the researchers because of its high specific surface area and superior electron mobility [24,[26][27][28]. Now, the graphene oxide can be mass-produced at a lower cost, and there were so many researchers constructed plenty of different types of semiconductor-graphene (SC) heterojunction materials to improve their photocatalytic performance [17,24], such as TiO2/GO [29], Cu2O/rGO [30], α-Fe2O3@GO [31], ZnO/rGO [32] and Bi2WO6/graphene [33]. As expected, the photocatalytic performances of the composites were improved because the graphene in the composites can promote charge separation and inhibit photo-generated electron-hole pair recombination.…”

Synthesis of a plasmonic AgCl and oxygen-rich Bi24O31Cl10 composite heterogeneous catalyst for enhanced degradation of tetracycline and 2,4-dichlorophenoxy acetic acid

“…P -Benzoquinone (BQ), 2-propanol (IPA) and triethanolamine (TEOA) were used as superoxide radical (˙O 2− ), hydroxyl radical (˙OH) and hole (h + ) scavengers to investigate their roles in the photocatalytic process. 55 The addition of BQ and TEOA to 2,4-D reduced the degradation efficiency by 12% and 52% while the addition of IPA did not suppress the efficiency of the 20%AgCl/BOC. In the degradation of TC using 50%AgCl/BOC, the addition of BQ reduced the degradation efficiency to 63% while IPA and TEOA did not impact the degradation efficiency negatively.…”

AgBr nanoparticle surface modified SnO2 enhanced visible light catalytic performance: characterization, mechanism and kinetics study

“…SnO 2 , as a photogenerated electron acceptor, could inhibit the photogenerated electron–hole recombination rate and improve the contact between active substances and pollutants. 51,52 SnO 2 –AgBr (1 : 1) had the best degradation effect on MO and MG, and the 150 min treatment rates were 96.74% and 93.36%, respectively. A dynamic analysis of degradation rate (Fig.…”