Ultrathin carbon-coated Zr3+-ZrO2 nanostructures for efficient visible light photocatalytic antibiotic elimination

In situ construction of a C3N5 nanosheet/Bi2WO6 nanodot S-scheme heterojunction with enhanced structural defects for the efficient photocatalytic removal of tetracycline and Cr(vi)

“…As for BWO, a distinct EPR signal is detected, indicating the presence of OVs. 46,47 Notably, the EPR signal intensity of 10CN/BWO is stronger than those of pure BWO and CN, reflecting a higher concentration of structural defects in 10CN/BWO. It has been demonstrated that structural defects can contribute to better light absorption properties, more active sites and boosted charge-carrier separation, leading to upgraded photocatalytic performance.…”

Metallic Powder Promotes Nitridation Kinetics for Facile Synthesis of (Oxy)Nitride Photocatalysts

“…The lower defect concentration of Zr 2 ON 2 (Mg)-1023K-4 h is further verified using the specific Zr3d X-ray photoelectron spectrum (Figure S6, Supporting Information), exhibiting much smaller divided peaks of the Zr 3+ signal. [28] These results demonstrate that successful and homogeneous nitridation of ZrO 2 can be achieved with a nitridation temperature of 1023 K and a nitridation time of only 4 h using Mg powder for nitridation assistance. In summary, the novel Mg-assisted nitridation method is favorable for the synthesis of oxynitrides with metal ions having d 0 electronic configuration (including Ta 5+ , Ti 4+ , and Zr 4+ ).…”

Enhanced Endurance and Imprint Properties in Hf0.5Zr0.5O2−δ Ferroelectric Capacitors by Tailoring the Oxygen Vacancy

“…The ratio of the Hf 4f5/2 and Hf 4f7/2 peaks was kept the same for all spectra, as was the ratio of the Zr 3d3/2 and Zr 3d5/2 peaks. The difference in binding energy was set at 1.66 eV for Hf 4f5/2 and Hf 4f7/2 and 2.40 eV for Zr 3d3/2 and Zr 3d5/2 , ,, which were also kept the same for all spectra. As expected, components corresponding to Hf 3+ and Zr 3+ chemical states can be found at lower binding energies, which also demonstrates the presence of oxygen vacancies. ,, Fitting results of the contributions of the Hf 3+ and Zr 3+ chemical states are shown as shaded areas in the lower parts of Figure (a) and (b).…”