Plasmonic effect and bandgap tailoring of Ag/Ag2S doped on ZnO nanocomposites for enhanced visible-light photocatalysis

Versatile Metal–Organic Framework Incorporating Ag2S for Constructing a Photoelectrochemical Immunosensor for Two Breast Cancer Markers

“…We tested the photocurrent responses with 0.2 and −0.2 V applied voltages. As shown in Figure e,f, the composite shows significantly enhanced anodic and cathodic photocurrents compared to those of the original base material of MIL-101­(Cr) due to the introduction of semiconductor Ag 2 S. − For anodic photocurrent, the composite shows nearly 1000-fold enhanced anodic photocurrent from 55 nA to 46 μA at 0.2 V, while for the cathodic case, the photocurrent signal was also improved from −40 nA to −1.7 μA, more than 40-fold enhancement (Figure g). This demonstrates the significant impact and necessity of incorporating a semiconductor in a PEC sensor for amplifying the signal that even depends on the loading mass or layers of Ag 2 S. We have investigated how varying the number of Ag 2 S layers and soaking time affected the sensor morphology and performance (Figures S6–S8).…”

“…The base material of MIL-101­(Cr) generates a signal only on the nanoampere scale that is hard to detect for biomaterials. Generally, Ag 2 S with a narrow bandgap (0.92 eV) is an important visible-light-driven semiconductor for improving the photocatalytic activity and tailoring the bandgap. − For this, we introduced Ag 2 S into MIL-101­(Cr) to enhance the PEC signal intensity and decrease the resistance from 2241 to 118 Ω (Figure S5). The incorporation of Ag 2 S broadened the absorption of MIL-101­(Cr) in the visible range (Figure c).…”

Ag-decorated ZnO-based nanocomposites for visible light-driven photocatalytic degradation: basic understanding and outlook

“…In addition to the common semiconducting metal oxides mentioned above, some other metallic compounds such as chlorides (AgCl [193][194][195], AgBr [196], AgI [197], etc), chalcogenides (ZnS [198], CdS [199], Ag 2 S [200], ZnSe [201], etc), and ternary oxides (Ag 2 WO 4 [202], Ag 2 CrO 4 [203], Ag 2 MoO 4 [204], CoFe 2 O 4 [205], etc) have been incorporated into ZnO/Ag systems to construct novel ternary heterostructure photocatalysts with excellent solar-driven photocatalytic performances. For example, Yu et al prepared submicron wirelike Ag@AgCl/ZnO film photocatalysts on a silicate glass substrate by combining a spin-coating method with a simple impregnating-precipitation-photoreduction process [193].…”

Predicting rejection of emerging contaminants through RO membrane filtration based on ANN-QSAR modeling approach: trends in molecular descriptors and structures towards rejections

“…Overall, biological processes and conventional treatment strategies are not versatile toward the removal of different classes of micropollutants and they lead to insufficient removal of many micropollutants from water. [12][13][14] On the contrary, advanced processes have shown great ability to degrade or remove many of these ECs. 15 There are many advanced technologies like ultraviolet light, activated carbon, and membrane.…”

“…Overall, biological processes and conventional treatment strategies are not versatile toward the removal of different classes of micropollutants and they lead to insufficient removal of many micropollutants from water. 12–14…”