A biomimetic beetle-like membrane with superoleophilic SiO2-induced oil coalescence on superhydrophilic CuC2O4 nanosheet arrays for effective O/W emulsion separation

Direct Electrocatalytic Reduction of As(III) on CuSn Alloy Electrode: A Green and Sustainable Strategy to Recover Elemental Arsenic from Arsenic Wastewater

“…The presence of solid-state As(0) can be deduced from the appearance of an additional signal at 41.6 eV, attributable to As 3d species, in the wide-scan XPS spectrum of the CuSn NAs/CF electrode (Figure c), as compared to the wide scan XPS spectrum before electrolysis of As­(III) (Figure S2). The deconvoluted Cu 2p core-level XPS spectrum (Figure d) is composed of the Cu 2p orbital spinning doublet of Cu 2p 3/2 (at 932.4 eV) and Cu 2p 1/2 (at 952.5 eV), along with the characteristic shakeup satellites . The curve-fitted Sn 3d core-level XPS spectrum (Figure e) consists of two distinct doublets of Sn 4+ (at 486.8 and 495.1 eV) and Sn 0 (at 485.2 and 493.7 eV).…”

“…The deconvoluted Cu 2p core-level XPS spectrum (Figure 8d) is composed of the Cu 2p orbital spinning doublet of Cu 2p 3/2 (at 932.4 eV) and Cu 2p 1/2 (at 952.5 eV), along with the characteristic shakeup satellites. 55 The curve-fitted Sn 3d corelevel XPS spectrum (Figure 8e) consists of two distinct doublets of Sn 4+ (at 486.8 and 495.1 eV) and Sn 0 (at 485.2 and 493.7 eV). These Cu 2p and Sn 2p XPS spectra are consistent with the spectra obtained from the CuSn NAs/CF electrode prior to the electrocatalytic reduction of As(III).…”

Trivalent Metal Ions (Al, Ga, In)-Doped TiO2 for Enhanced Photocatalytic Desulfurization of H2S: Band Structure Regulation, Performance, and Mechanism

“…Two peaks with binding energies (BEs) at 458.5 and 464.2 eV are observed, attributable to the spin−orbital doublet of Ti 2p 3/2 and Ti 2p 1/2 of Ti 4+ , respectively. 41,42 The deconvoluted O 1s XPS spectrum (Figure 3b) shows three peak components with BEs at 529.8, 531.4, and 532.7 eV, which are assigned to the metal oxide (M−O), hydroxide (OH), and H 2 O, respectively. 43,44 These peaks suggest the presence of Al−O, Ga−O, and In−O bonds on the M-TiO 2 samples.…”

Enhancing Energy Storage via Confining Sulfite Anions onto Iron Oxide/Poly(3,4-Ethylenedioxythiophene) Heterointerface

“…No obvious change in Raman spectra can be observed after immersing the electrode in the Na 2 SO 3 electrolyte for 1 h. After discharging to −1.0 V, the intensity of the related Fe 2 O 3 characteristic peak decreased for the Fe 2 O 3 @PEDOT electrode (Figure b), and no new signal can be found. Figure c,d shows the XPS spectra of pristine Fe 2 O 3 electrode after immersing in Na 2 SO 3 solution for 1 h. The O 1s core-level spectrum of the pristine Fe 2 O 3 electrode (Figure c) is curve-fitted into four peak components, which correspond to lattice oxygen (O 2‑ , 530.1 eV), chemisorbed oxygen (ads-c, 531.5 eV), O–CO (532.5 eV), and water (H 2 O, 533.9 eV). − The relative densities of these species can be calculated from the proportional areas of the corresponding peaks. The ads-c can be attributed to the presence of SO 3 2– and SO 4 2– on the Fe 2 O 3 surface, and a content of 13.2% was observed.…”