Removal of arsenite and arsenate from contaminated water using Fe-ZrO-modified biochar. Author links open overlay panel Jichao Zhang a, Liping Huang a, Zijun Ye a, Qianyu Zhao a, Yujie Li a, Yun Wu b, Wei Zhang c, Hongguo Zhang c. ... simple preparation, stable properties, and good adsorption performance. Iron ion is widely …
The preparation of NiO/ZrO 2 composites using different ball milling conditions and precursor loadings was studied, and the interfacial relationship between NiO and ZrO 2 was also investigated. Additionally, the synthetic mechanism for NiO/ZrO 2 composites was explored by in-situ transmission electron microscopy (TEM). These …
To circumvent the liquid-solid separation and dispersion of the powdered adsorbent during adsorption-desorption circulation, using a drop-oil sol-gel method, the spherical ZrO(OH) 2 /AlOOH hybrid composite beads were prepared as an adsorbent for sulfate adsorption removal from water. The preparation mechanism was proposed and …
Cyanex 302 or Cyanex 301 in n-hexane solution gave better extractability of ZrO(II) than Sc(III) in H 2 SO 4 acidic medium, so that the separation of Sc(III) from ZrO(II) is difficult using these extraction systems.
Fabrication of NiO/ZrO 2 nanocomposites using ball milling ... Ball milling-pyrolysis method for NiO/ZrO 2 nanocomposite preparation was proposed. • Attachment of NiO on ZrO 2 could be regulated by milling time and Ni/Zr molar ratio. • Formation mechanism of NiO/ZrO 2 was studied using in-situ TEM observation.
The method applied involves preparation of chitosan-ZrO x and PVA-ZrO x hybrid films, and subsequent calcination of the films to recover quatitatively the ZrOx …
This review examines the emergence of the technique of ball milling as a reactor technology to enable mechanical activation of zero-valent metals.
Request PDF | Preparation of Super-strong ZrO2 Ceramics Using Dynamic Hot Forging | In this study, dynamic hot forging (DHF) was proposed and applied to make super-strong zirconia (ZrO2) ceramics.
We developed the direct patterning process of the ZrO 2 high-aspect-ratio (HAR) pattern for light-extraction efficiency of GaN-based blue light-emitting diodes (LEDs). ZrO 2 HAR pattern, which has relatively high refractive index and acts as scattering layer, was formed on GaN-based blue LEDs using ultraviolet-nanoimprint lithography (UV …
We demonstrate that a SiO disproportionation reaction can be achieved simply by high energy mechanochemical milling. The planetary ball-milling of ZrO 2 for …
The work deals with synthesis of zirconia (ZrO2) nanopowder from commercial micron sized ZrO2 powder using high energy ball mill and its characterization using scanning …
ZrC–ZrO 2 composite ceramic microspheres were prepared by internal gelation combined with carbothermic reduction using fructose as a chelating agent and carbon source. Fructose in the precursor solution formed complex with zirconium ions, which was conducive to the refining of the microstructure of the sintered composite.
The ZrO 2 –SiO 2 aerogels (ZSA) with varied particle size were synthesized by solvent-thermal aging (STA) method. The effects of STA temperature (60, 110, 170 and 210 °C) on microstructure and thermal stability of the ZSA were investigated by SEM, TEM, FT-IR and XRD.
Semantic Scholar extracted view of "Preparation and properties of ZrO2-strengthened porous mullite insulation materials using Y2O3 additive" by Wang-zhi Yu et al.
The phase and preparation techniques have an impact on the bandgap of ZrO 2, which typically ranges from 5 to 7 eV. Recently, a number of studies have focused on wide bandgap compound semiconductors ... Some of the applications are the use of ZrO 2 nanoparticles in the field of dentistry, ...
The purpose of this paper is to provide a detailed review of the methods for the synthesis of nano-ZrO 2. Firstly, the basic concept of every synthesis route is …
Semantic Scholar extracted view of "Utilization of greenhouse gases through carbon dioxide reforming of methane over Ni–Co/MgO–ZrO2: Preparation, characterization and activity studies" by M. Fan et al.
ZrO 2 and graphite were mixed with different molar ratios of 1:2 1:3 and 1:4. Then stabilized ZrO 2 based and TiO ...Ball milling-pyrolysis method for NiO/ZrO 2 nanocomposite preparation was proposed.. Attachment of NiO on ZrO 2 could be regulated by milling time and Ni/Zr molar ratio..
A series of new type of solid superacid catalysts S2O82-/ZrO2MxOy(M=Al,Fe,Si) by MxOy was prepared successfully by the method of precipitation-impregnation.The catalytic activity was affected by prepared condition through esterification reaction of acetic acid and isobutyl alcohol.Experimental results showed that different MxOy on the catalyst had different …
Simultaneous measurements of 16 cations and anions were realized using ZrO-Chelex DGT. • The cations and anions in the ZrO-Chelex gel were efficiently eluted using a two-step procedure. • DGT uptake was independent of solution pH (5–9) and ionic strength (2–3 mM - 750 mM). • ZrO-Chelex DGT had high capacities for measurements …
Novel process of preparation of Yttria stabilized ZrO 2 small sizes beads using sol-gel method combined with spray granulation technology. Original Paper: Industrial and technological applications of sol-gel and hybrid materials
The phase transformation kinetics of high-energy ball-milled monoclinic ZrO 2 have been studied in detail by Rietveld powder structure refinement analysis. In the …
According to a literature survey, few research groups have been reported the synthesis of monoclinic and tetragonal crystalline phases of ZrO 2 using different preparation methods. The hierarchical structure of m-ZrO 2 nanorods were prepared by Fu et al. using the hydrothermal method [15].
TiO 2 was deposited with atomic layer control on ZrO 2 particles using alternating exposures of TiCl 4 and H 2 O. Transmission Fourier transform infrared (FTIR) spectroscopy was used to monitor the sequential surface chemistry in vacuum. The ZrO 2 particles initially displayed vibrational modes consistent with ZrOH * surface species.
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Using appropriate preparation conditions zirconia acidic properties can be tailored, ... The objective of this work was to yield nanostructured ZrO 2 by using pressurized hot water and pressurized hot/supercritical methanol processing from the zirconia gel precursor prepared by sol-gel method.
The optimum composition of ZrO 2 polycrystalline ceramic catalyst were optimized using response surface methodology (RSM) to be 88.47% ZrO 2, 9.62% Al 2 O 3, 3.31% TiO 2, 10% NaHCO 3, and 25% NaCl (compared with the standard number 100). After calcination at 1550°C for 120 min, fatty acid methyl ester conversion rates …
In this study, porous ZrO 2 /SiZrBOC and SiZrBOC ceramic matrix composites were produced via vacuum impregnation method, using SiZrBOC ceramic precursor as a matrix, ZrO 2 fiber prepared via electrospinning as the reinforcing agent and polyurethane as a skeleton. Polyurethane with open porosity is rather a …
In this research, the possible rapid removal of the selected pollutants was investigated using newly synthesized ZrO 2 /Fe 3 O 4 nanoparticles under solar irradiation. ZrO 2 /Fe 3 O 4 nanoparticles with different ZrO 2 content (0.9, 3.5, 12, and 19%, w/w) were synthesized by simple chemical co-precipitation.
Zirconia (ZrO 2) fibers are lightweight polycrystalline refractory materials that have long service life, and are suitable for use at ultra-high temperatures (above 1600°C). In this study, biomorphic ZrO 2 ceramic fibers were prepared by a simple impregnation method using a zirconic solution using cotton fibers as a biomaterial template.
Al 2 O 3 /YAG/ZrO 2 eutectic ceramics were prepared using the zone-melting method. The following conclusions were drawn in this work: The eutectic samples prepared using the IHZM method are composed of an Al 2 O 3 phase, a ZrO 2 phase, and a YAG phase, and each phase in the eutectic ceramics is preferentially oriented during …
Thickness-dependent ferroelectric properties of HfO 2 /ZrO 2 nanolaminates using atomic layer deposition. Ceramics; ... methodology, LL and XY; validation, LW and LT; investigation, YC and LT; writing-original draft preparation, YC; writing—review & editing, HC and DZ; supervision, KZ; funding acquisition, DZ. Corresponding authors.
The main content of this experiment is to study the optimal ball milling process of Mn powder by controlling the factors such as ball milling ratio, ball milling time and …
In the present study, linear shrinkage, porosity and mean pore size of ZrO 2-reinforced porous mullite ceramics increased, and volume density, mechanical strength and heat conductivity decreased.
Preparation of High Refractive index Materials using ZrO2 Nanoparticles and Glyceryl-N-(2-methacryloyloxyethyl)urethane and Its Properties
This work explores the possibility of using ZrO 2 sol to synthesize EP Ni–P–ZrO 2 nano-composite coatings with improved mechanical properties. The formation mechanism of ZrO 2 nano particles is also discussed.
In this work, the effect of varying the size of the precursor raw materials SiO 2 and ZrO 2 in the solid-state synthesis of NASICON in the form Na 3 Zr 2 Si 2 PO 12 was studied. Nanoscale and macro-scale …
The formation of ZrO 2 nanopowders under various hydrothermal conditions such as temperature (125–200 °C), time (1 min–15 h), autoclave rotation speed (0–310 …
Preparation of high performance superhydrophobic PVDF-PbO 2-ZrO 2 composite electrode and its application in the degradation of paracetamol and industrial oily wastewater. ... After 20 times repeated use, PVDF-PbO 2-ZrO 2 electrode still has a high APAP removal rate, which is only slightly lower than at the beginning, ...
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