Ytterbium Hydroxide Research Articles

Study of HgOH to Assess Its Suitability for Electron Electric Dipole Moment Searches

In search of suitable molecular candidates for probing the electric dipole moment (EDM) of the electron (de), a property that arises due to parity and time-reversal violating (P,T-odd) interactions, we consider the triatomic mercury hydroxide (HgOH) molecule. The impetus for this proposal is based on previous works on two systems: the recently proposed ytterbium hydroxide (YbOH) experiment that demonstrates the advantages of polyatomics for such EDM searches, and the finding that mercury halides provide the highest enhancement due to de compared to other diatomic molecules. We identify the ground state of HgOH as being in a bent geometry, and show that its intrinsic EDM sensitivity is comparable to the corresponding value for YbOH. Along with the theoretical results, we discuss plausible experimental schemes for an EDM measurement in HgOH. Furthermore, we provide pilot calculations of the EDM sensitivity for de for HgCH3 and HgCF3, that are natural extensions of HgOH.

Luminescent sensing film based on sulfosalicylic acid modified Tb(III)-doped yttrium hydroxide nanosheets

Sulfosalicylic acid (SSA) was used as an intercalation agent and an excellent antenna to synthesize layered rare-earth hydroxide (LRH) materials and directly obtain SSA-modified terbium-doped ytterbium hydroxide nanosheets by mechanical exfoliation. The crystal structure and morphologies of the LRHs and nanosheets were determined by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The particle size and zeta potential of the prepared nanosheets were also analyzed. The as-prepared nanosheets exhibited excellent luminescent properties. The positively charged nanosheets were electrophoretically deposited on a conductive glass to form a thin film. The luminescence of this thin film can be quenched by chromate (rm{CrO_4^{2-}}) and bilirubin (BR), which shows good sensing properties. The quenching mechanism of the sensing film by rm{CrO_4^{2-}} and BR was discussed based on the spectra and structure of the film.

Corrosion resistance of resorbable Ca-Mg-Zn-Yb metallic glasses in Ringer's solution

The corrosion behavior of Ca65−xMg10+xZn25 (x = 0,10) and Ca32Mg12Zn38Yb18 alloys was studied by potendiodynamic tests and electrochemical impedance spectroscopy in Ringer's solution. The solution of NaCl, KCl and CaCl2 components reacted with outer layer of alloys and produced corrosion products. The influence of Ca content on the hydrogen volume as a function of time was discussed. The measurements exhibited significantly less hydrogen evolution volumes for Ca55Mg20Zn25 alloy (5.0 ml/cm2) than for Ca65Mg10Zn25 glass (11.3 ml/cm2) after 2 h. The lowest value of hydrogen evolution was observed for Ca32Mg12Zn38Yb18 glass (1.1 ml/cm2). The hydrogen volume for Ca32Zn38Mg12Yb18 sample fulfilled the non-toxic amount of H2, which must be low than ~1 ml/h. The XPS survey spectra for the glassy samples after corrosion test in Ringer's solution represent the surface components. The corrosion products were identified as to be CaCO3, Mg(OH)2, CaO, MgO and ZnO compounds. In addition, the EDS and X-ray analysis of a layer of corrosion products after immersion tests in Ringer's solution identified calcium and ytterbium hydroxide, calcium carbonate and also calcium zinc hydroxide hydrate.

Fine tuning the microenvironment of [EuW10O36]9- anion leads to the large enhancement of the red light luminescence

The polyoxometalate (POM) anion of europium (III) decatungstate [EuW10O36]9- exhibits great luminescence quantum yields of approximately 67% but suffers reduced red light emissions that are due to the low 5D0→7F2 transmissions. Fine tuning the microenvironment around [EuW10O36]9- anion through intercalation into different compositions of layered double hydroxides (LDHs) materials, greatly enhances the 5D0→7F2 transmissions. The positive nanosheets in LDHs provide a conducive microenvironment for strong transitions of 5D0→7F2 to occur. The ratio I(5D0→7F2)/I(5D0→7F1) for the observed intensities vary from 0.44 for [EuW10O36]9- ion to 14.08, 6.20, 1.75 and 1.59 in Mg2Al-EuW10O36, LYbH-EuW10O36, Zn2Al-EuW10O36 and LEuH-EuW10O36 materials respectively (Mg2Al = magnesium aluminum LDHs, Zn2Al = Zinc aluminum LDHs, LYbH = layered ytterbium hydroxide LDHs, and LEuH = layered europium hydroxide LDHs). As such, these materials can find a wide application in processes that require the red light luminescence.

Synthesis and Crystal Structure of a Trinuclear Aminobis(phenolate) Ytterbium Hydroxide Complex

The hydrolysis of aminobis(phenolate)lanthanide thiolate of (THF)LYb(SC6H4-p-Me) (L2− = Me2NCH2CH2CH2N{CH2-(3,5-tBu2-C6H2-2-O−)}2) led to the first aminobis(phenolate)lanthanide hydroxide of [(H2O)LYb(μ-OH)]3(μ3-H2O), being characterized by infrared spectra, elemental analyses, and X-ray crystallography. The product is a novel trinuclear complex, in which three Yb-OH bonds construct a six-membered ring in a chair conformation.

Study on the Performances of Nickel Hydroxide Coated with Ytterbium Hydroxide at High-Temperature

Abstract The surface of nickel hydroxide [Ni(OH)2] coated with ytterbium hydroxide [Yb(OH)3] and cobalt hydroxide [Co(OH)2] were studied and characterized by XRD, XPS, SEM and constant current recharge technology. The results show that the structure of β-Ni(OH)2 is hexagonal, Co exists mainly in the form of Co2+ with a small amount of Co3+, and the atomic ratio of Co and Ni on the sample surface is more than 8:1. The samples coated of 2 wt% Yb(OH)3 show the maximum discharge capacity and active material utilization rate at 65 °C (0.2, 1, 3 C). After 30 charge/discharge cycles, the discharge cycling stability and the discharge capacity of Ni(OH)2 coated with different contents of Yb (OH)3 are enhanced with increasing of content of Yb(OH)3 under different charge/discharge rates at 65 °C.

ChemInform Abstract: Observation and Isolation of Layered and Framework Ytterbium Hydroxide Phases Using in situ Energy‐Dispersive X‐Ray Diffraction.

AbstractThe hydrothermal synthesis of the compounds Ln2(OH)5NO3·xH2O (Ln: Y, Er, Yb) from aqueous solutions of Ln(NO3)3, NaOH, and NaNO3 (autoclave, 100—220 °C) is monitored by time‐resolved, in situ energy‐dispersive XRD.

Observation and Isolation of Layered and Framework Ytterbium Hydroxide Phases Using In Situ Energy-Dispersive X-ray Diffraction

In situ energy-dispersive X-ray diffraction has been used to investigate the synthesis of the recently reported lanthanide hydroxynitrate phases, Ln2(OH)5NO3·1.5H2O (Ln = Y, Er, Yb). Through control of the reaction temperature, three distinct layered phases with differing degrees of hydration (x = 1 (1), 1.5 (2), and 2 (3)) were observed in the Yb synthesis and subsequently isolated. Only the phase with x = 1.5 was observed for the reactions with Y and Er. The crystal structures of Yb2(OH)5NO3·2H2O (2) and Yb2(OH)5NO3·H2O (3) were determined in a single-crystal diffraction study and represent the first crystal structures of the new lanthanide hydroxynitrate phases. Both Yb2(OH)5NO3·2H2O and Yb2(OH)5NO3·H2O adopt orthorhombic structures in which the nitrate anion is coordinated to the Yb3+ cations within the hydroxide layer and are largely resistant to anion exchange. This is in contrast to the Ln2(OH)5NO3·1.5H2O phases, which undergo facile anion exchange reactions at room temperature, indicating that the...

Determination of Cadmium in Spring Water by Graphite-Furnace Atomic Absorption Spectrometry after Coprecipitation with Ytterbium Hydroxide

A coprecipitation method with ytterbium hydroxide was studied for the determination of cadmium in water samples by graphite-furnace atomic absorption spectrometry. Up to 40 ng of cadmium in water samples was quantitatively coprecipitated with ytterbium hydroxide at pH 8.0-11.2. The concentration factor was 100 fold. The coprecipitated cadmium was sensitively determined without any influence of ytterbium and the calibration curve was linear from 0.1 to 4 ng/mL of cadmium. The detection limit (signal/noise = 2) was 2.9 pg/mL in 100 mL of the initial sample solution. Twenty-nine diverse ions tested did not interfere with the determination in at least a 10000-fold mass ratio to cadmium. The proposed method was successfully applied to the determination of cadmium in spring water.

Preparation of Ytterbium Iron Garnet Powder by Homogeneous Precipitation Method and Its Sintering

Yb2O3-Fe2O3 powders were prepared from ytterbium and iron chloride solutions by a homogeneous precipitation method where urea was used as precipitant. The precipitation process was carried out stepwise. At first the iron hydroxide was precipitated and then the ytterbium hydroxide was formed. In the firing process of precipitated powder the ytterbium orthoferrite was formed initially from the iron oxide and ytterbium oxide, and monophasic ytterbium iron garnet was obtained above 1200°C. The reactivity and sinterability of the powder obtained by the homogeneous precipitation method were better than that of oxide mixture. The ytterbium iron garnet contained up to 0.1-0.2mol% iron oxide in excess of the stoichiometric composition.

Hydroxide complexes of lanthanides—IV ytterbium(III) in perchlorate medium

From the precipitation borderline in the pM′-p C H diagram, determined experimentally under CO 2-free conditions, the stability constants of the mononuclear species of ytterbium hydroxide have been established. The values found are log *β 1 = −7.7, log *β 2 = −15.5, log *β 3 = −23.2, log *β 4 = −37.5, log *β 5 = −51.9, log *β 6 = −66.2 and log * K S0 = 18.0. The data refer to fresh precipitates, prepared at room temperature (21.5 ± 0.2°) in sodium perchlorate medium with an ionic strength of 1. The formation of polynuclear hydroxide complexes has been considered and rejected as unlikely to occur.

Magnetic transition temperature of terbium hydroxide oxide. Structure of ytterbium hydroxide oxide

Magnetic transition temperature of terbium hydroxide oxide. Structure of ytterbium hydroxide oxide

Aging studies on hydrous lutetium oxide

Three unique phases of hydrous lutetium oxide have been isolated. An aging series under strict controls presents evidence of phase transitions from an amorphous gel to LuOOH. The newly found cubic Lu(OH) 3 is one of the isolated phases. Lattice paraments obtained from X-ray diffraction methods are given for lutetium trihydroxide (cubic, Im3) and lutetium oxyhydroxide (monoclinic, P2 1/m). Preliminary studies relating to similar occuring phenomenon with thulium and ytterbium hydroxide systems are discussed.