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Beilstein J. Nanotechnol. 2024, 15, 1283–1296, doi:10.3762/bjnano.15.104
Figure 1: FTIR spectra of as-prepared gels.
Figure 2: DTA, DTG and TG curves for the as-prepared SG powder.
Figure 3: DTA, DTG and TG curves for the as-prepared MW powder.
Figure 4: SEM images for (a) SG sample and (b) MW sample.
Figure 5: FTIR spectra of the thermally treated samples (SG and MW).
Figure 6: XRD patterns of SG and MW powders, thermally treated at 500 °C, over (a) the full 2θ range and (b) ...
Figure 7: N2 adsorption–desorption isotherms and pore size distributions (inset of the figures) for the inves...
Figure 8: Comparative UV–vis spectra of SG and MW; the inset illustrates the Tauc plot for SG and MW samples.
Figure 9: Photoluminescence spectra of the powders suspended in water (SG and MW) collected for λexc = 270 nm....
Figure 10: Quenching of catalyst photoluminescence with increasing oxalic acid concentrations in aqueous solut...
Figure 11: Generation of hydroxyl radicals by (a) SG and (b) MW (b) catalysts. (c) Comparative emissions at 45...
Figure 12: O2− formation over SG and MW powders under simulated solar irradiation.
Figure 13: Photoactivity of the suspended catalyst powders for oxalic acid oxidation to CO2 under simulated so...