F-doping of nanostructured ZnO: a way to modify structural, electronic, and surface properties

Abstract

The structure, electronic properties, and surface acidity of polycrystalline ZnO are modified using F2(g). The amount of F incorporated influences the samples' properties, which were studied using, e.g., FT-IR, XPS, TEM, NMR, and microcalorimetry.

Realistic Operando‐DRIFTS Studies on Cu/ZnO Catalysts for CO2 Hydrogenation to Methanol – Direct Observation of Mono‐ionized Defect Sites and Implications for Reaction Intermediates

“…[58] The wellknown increase in the electrical conductivity of ZnO under reductive conditions supports this assumption. [61,80] This description agrees to observations made by Topsøe and Topsøe. [23] They noted for a pure ZnO sample a strong decrease in the IR transparency during the reduction process at a temperature of 493 K using 0.5 % CO, 4 % CO 2 , and 4 % H 2 as reduction gas.…”

Highly Selective Alkaline Oxide Promoted Ni/silica for the Production of Cyclohexanol/‐one from Lignin‐Derived Guaiacol

“…In contrast, hydrogen pulse chemisorption measurements of the reduced systems indicate a decreasing hydrogen adsorption capacity with increasing MgO content and, thus, lower dispersity and larger Ni metal crystallite sizes (Table 1). Consequently, the reduced hydrogen adsorption capacity can be attributed to an accumulation of MgO on the Ni particle surface, as reported for other systems, which indicates a strong metal support interaction (SMSI), e. g., by the local formation of an alloy or intermetallic species [18–20] . Temperature‐programmed reduction, oxidation, and re‐reduction (TPROR) up to 600 °C were recorded for all catalyst materials to mimic the conditions during pretreatment for catalytic tests (SI, Figure S13, and S14).…”

Site-Selective Adsorption on ZnF2/Ag Coated Zn for Advanced Aqueous Zinc–Metal Batteries at Low Temperature

“…07-0214) and (111) plane of Ag (JCPDS no. 04-0783) (Figure b). , The results are also confirmed by high-resolution transmission electron microscope (HRTEM, Figure c), where the lattice fringes with their interplanar distances of 0.33 and 0.24 nm match well with the (110) plane of tetragonal-phase ZnF 2 and the (111) plane of cubic-phase Ag. , The surface morphology of ZnF 2 –Ag@Zn was examined by a scanning electron microscope (SEM). Precisely controlling the reaction time could achieve the uniform coating of ZnF 2 –Ag nanoparticles on Zn foils (Figure S2).…”