Extended visible photosensitivity of carboxyethyltin functionalized polyoxometalates with common organic dyes enabling enhanced photoelectric performance

Abstract

A kind of broad spectral responsive photoelectrode was assembled from carboxyethyltin–POM derivatives and organic dyes.

Enhanced Corrosion Resistance of Carbon Steel in Hydrochloric Acid Solution by Polyoxometalate-Estertin Derivatives

“…As shown in Figure a, XPS peaks of C 1s can be fitted with three peaks at binding energies of 284.5, 285.12, and 288.27 eV, which are ascribed to C–C/C–H species, C–O, and CO/O–CO bonds in SnR groups, respectively . As seen from Figure b, O 1s shows signals at binding energies of 530.3 and 531.6 eV, which correspond to O 2– and OH – , respectively. , As for Fe 2p, in Figure c, the peak positions of Fe 2p 1/2 and Fe 2p 3/2 for Fe 2+ are located at 724.6 and 710.8 eV, with their associated satellite peaks at 731.5 and 717.6 eV, respectively. In addition, the XPS peaks with binding energies of 726 and 712.2 eV are assigned to Fe 2p 1/2 and Fe 2p 3/2 for Fe 3+ , with their associated satellite peaks at 732.9 and 719 eV, respectively.…”

“…The signal of Mn was not detected because of its low content. As shown in Figure 12a, XPS 58,59 As for Fe 2p, in Figure 12c, the peak positions of Fe 2p 1/2 and Fe 2p 3/2 for Fe 2+ are located at 724.6 and 710.8 eV, with their associated satellite peaks at 731.5 and 717.6 eV, respectively. In addition, the XPS peaks with binding energies of 726 and 712.2 eV are assigned to Fe 2p 1/2 and Fe 2p 3/2 for Fe 3+ , with their associated satellite peaks at 732.9 and 719 eV, respectively.…”

“…60 In Figure 12d, the binding energies of Sn 3d located at 486.4 and 494.85 eV are attributed to the Sn 4+ oxidation state. 58 Figure 12e shows the XPS spectra of Sb 3d, in which the peaks at binding energies of 539.7 and 530.24 eV are ascribed to Sb 3d 3/2 and Sb 3d 5/2 for the Sb 3+ oxidation state, in which there exists an overlap between the O 1s peak at 531.3 eV and the Sb 3d 5/2 peak. 32,61 In Figure 12f, the peaks at binding energies of 36.9 and 34.8 eV are attributed to W 4f 7/2 and W 4f 5/2 for the W 6+ oxidation state, and the peaks at binding energies of 35.7 and 33.7 eV are assigned to W 4f 7/2 and W 4f 5/2 for the W 5+ oxidation state, respectively, inferring that part of the W element in POM is reduced in the HCl media.…”

Supramolecular Architectures of Polyoxometalate Hybrids Originating from Halogen and Hydrogen‐Bonding Interactions

“…Polyoxometalates (POMs) are a kind of nanoscale inorganic substance consisted of highly oxidation state transition metal cations and oxygen anions . The promising applications of POM hybrids in catalysis,, magnetism, medicine, and photoelectric materials, have attracted a broad interest over the past few decades. As a kind of inorganic building blocks with defined structures, polyoxometalates can form various topological and supramolecular architectures.…”