Synthesis of a Self‐assembled Dual Morphologies Ag‐NPs/SrMoO₄ Photocatalyst with LSPR Effect for the Degradation of Methylene Blue Dye

Abstract

Morphology of photocatalyst has attracted many attentions due to its significant effect on photocatalytic properties. Herein, the effects of hydrothermal reaction conditions including time, temperature, and pH value on the morphology evolution as well as on the photocatalytic performance of SrMoO4 were investigated in detail. It was found that SrMoO4 had self‐assembled dual morphologies (spherical and dumbbell shape) under the specific reaction conditions with time=24 h, temperature=200 °C, and pH=6.13. In order to enhance its photocatalysis further, the silver nanoparticles (Ag‐NPs) were well‐dispersed uniform on the surface of as‐prepared samples to obtain Ag‐NPs/SrMoO4 composites by photoreduction method. It was determined that 3 %Ag‐NPs/SrMoO4 had the first‐class photocatalytic performance (η=83.7 %, kapp=0.05229 min‐1) for the photodegradation of MB dye, which is ∼2.52 times that of the bare SrMoO4 with dual morphology (η=51.9 %, kapp=0.02078 min−1) by comparison with the apparent first‐order reaction rate constants. The photocatalytic performance was promoted by high efficiency of photo‐induced carriers’ separation based on the effect of Localized Surface Plasmon Resonance (LSPR) of well‐dispersed Ag‐NPs.

Construction of Z-Scheme Ag2MoO4/ZnWO4 Heterojunctions for Photocatalytically Removing Pollutants

“…For 8%AMO/ZWO, the Zn 2p/W 4f peaks do not undergo any change, whereas a slight shift is observed for the Ag 3d/Mo 3d peaks possibly due to the interaction occurring between AMO and ZWO. Three types of peaks are detected on the O 1s XPS spectra in Figure (f), which originate from the lattice oxygen (530.2 eV), water molecules (533.4 eV), and chemisorbed oxygen (531.4 eV). − The lattice O 1s peak in the 8%AMO/ZWO composite undergoes a slight shift toward higher binding energy when compared with that of bare AMO and ZWO, which could be caused by the interaction between the two semiconductors.…”

Construction of a Z-scheme Ag2MoO4/BiOBr heterojunction for photocatalytically removing organic pollutants

“…The appearance of the other two peaks indicates the existence of chemisorbed oxygen (531.4–532.0 eV) and water molecules (533.2 eV) on their surface. 53–55…”

Synthesis of Co3O4 Nanoparticles-Decorated Bi12O17Cl2 Hierarchical Microspheres for Enhanced Photocatalytic Degradation of RhB and BPA

“…As depicted in Figure A3 c, the O 1s profile could be deconvoluted into three peaks, thus indicating the existence of three different kinds of O species in the sample. The peaks observed at 529.674 and 530.568 eV were assigned to the lattice oxygen metal bonds and hydroxyl ( • OH) functional groups in 20-Co 3 O 4 /BOC, respectively [ 39 ]; the peak at 531.592 eV corresponded to oxygen vacancies in Co 3 O 4 in the 20-Co 3 O 4 /BOC composite sample [ 40 ]. Figure A3 d shows the spectrum of Cl 2p, which contained diverse peaks at 198.58 and 200.139 eV, respectively.…”