RSC Advances
·
2017
·Vol. 7
·期 7
·3727-3735
·
IF 3.108
Dandan Li,Yuchen Xie,Huaisong Yong,Dazhi Sun
We report the synthesis and tribological characterization of zirconia (ZrO2) nanoparticles in base mineral oil and commercial formulated lubricating oils. A modified chemical method was applied to prepare nano-sized ZrO2 structurally stabilized with yttria (Y2O3) in a precipitation process with the addition of various surfactants (polyethylene glycol, polyvinyl pyrrolidone, and polyether amine). Characterizations by X-ray diffraction and transmission electron microscopy show that polyether amine facilities the formation of stable ZrO2 with coexisting tetragonal and monoclinic phases and is better in preparing Y2O3-stabilized ZrO2 nanoparticles with a smaller particle size and narrower size distribution compared to the other surfactants used. The friction and anti-wear characteristics, which were tested with a four-ball module, indicate that the as-prepared Y2O3-stabilized ZrO2 nanoparticles perform better in commercial formulated lubricating oils than in the base mineral oil medium, and 0.1–0.5 wt% nanoparticles should be sufficient to achieve good tribological performance in lubricating oils.
研究领域:
材料科学
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摩擦学
·
化学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 11
·8247-8261
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IF 3.442
Wang Shuzhan,Zhou Shaofeng,Huang Jin,Zhao Guizhe,Liu Yaqing
ZrO 2 nanoparticles were electrostatic self-assembled on the surface of graphene oxide (GO) for enhancing the mechanical and tribological properties of phenolic resin. Zeta potential analysis and structural characterization confirmed that ZrO 2 nanoparticles had been successfully adhered onto the surface of GO, and the as-prepared ZrO 2 @GO nanohybrid possessed good dispersity. The results showed that filling 1.5 wt% ZrO 2 @GO nanohybrid could improve the flexural strength, flexural modulus and impact strength of phenolic resin (PF) by 38.6%, 10.7% and 8.3%, respectively. When 0.5 wt% ZrO 2 @GO was added, the initial decomposition temperature and the residual content at 800 °C of PF increased by 20.0% and 16.9%, respectively. The ZrO 2 @GO nanohybrid also exhibited synergistic effect for improving the tribological performance of PF effectively, that when adding 0.5 wt% ZrO 2 @GO nanohybrid, the average friction coefficient and wear rate of the composites reduced by 21.8% and 30.6%, respectively. SEM observation and 3D non-contact surface topography analysis showed the wear surface of ZrO 2 @GO nanohybrid filling PF composite was smooth, low spalling and shallowly grooved with the typical characteristic of abrasive wear. It was explained that the ZrO 2 @GO nanohybrid could play the role of rolling bearings, form stable and smooth friction transfer film and enhance the interfacial interaction, thus indicated the synergistic wear-resisting performance for PF matrix. It provides a green, convenient and fast method for preparing ZrO 2 nanoparticles-attached GO nanohybrid that can enhance the mechanical and tribological performance of resin-based materials effectively.
研究领域:
材料科学
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纳米技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Hongyuan Zhao,Binbin Liu,Yongfeng Li,Bo Li,Huina Ma,Sridhar Komarneni
We report a simple, economical and green one-pot hydrothermal strategy to synthesize the bio-derived nitrogen-doped carbon sheets (ONCSs) embedded with zirconia nanoparticles (ZrO 2 NPs) with orange juice as carbon source and solvent. The ONCSs-ZrO 2 NPs composite was further applied in the decoration of glassy carbon electrode (GCE) for electrochemical sensing of methyl parathion. The orange juice-derived ONCSs with graphene-like micromorphology showed good electrical conductivity , large specific surface area, and nitrogen functional groups. They could accelerate the electron transport , provide sufficient electrolyte-electrode interface, and improve the surface wettability , thus forming a suitable microenvironment for the redox reaction of MP. The embedded ZrO 2 NPs in graphene-like ONCSs possessed a strong affinity toward the phosphorus groups on MP molecules, which could promote the preconcentration of MP in the interface of the fabricated sensor and electrolyte. Benefitting from the synergistic effect of ONCSs and ZrO 2 NPs/GCE, the ONCSs-ZrO 2 NPs/GCE sensor exhibited excellent peak current response towards MP with a linear detection range of 0.01–15 μg mL −1 and a low detection limit of 0.115 ng mL −1 . Furthermore, the ONCSs-ZrO 2 NPs/GCE sensor presented good capability to investigate the MP levels in romaine and kiwifruit juices with satisfactory recoveries. This work provides a novel and green one-step approach in the development of carbon-based composite materials for high-performance MP electrochemical sensors .
研究领域:
材料科学
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环境科学
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分析化学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Ailing Bai,Hao Song,Gaoyin He,Qingsong Li,Chong Yang,Limei Tang,Yingmin Yu
Abtract Here, a simple and reproducible method for the preparation of a well-defined zirconia@silica core–shell nanostructure is described. We studied the morphology, size, and composition of prepared nanoparticles (NPs) by transmission electron microscopy , scanning electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy , X-ray diffraction, and energy-dispersive spectroscopy. ZrO 2 NPs were synthesized through a novel alcohol–water mixed system using ZrOCl 2 ·8H 2 O as the zirconium source under mild hydrothermal conditions (110–120 °C). These NPs were then used as the core for the deposition of a silica shell via a modified Stöber method, resulting in uniform core–shell ZrO 2 @SiO 2 composites with a tunable silica shell thickness and controllable core morphology. In addition, the effect of the agent polyvinylpyrrolidone (PVP) on the formation of the core–shell structure was investigated in detail. The results demonstrated the PVP played a critical role in stabilizing the NPs and enhancing the affinity between SiO 2 and ZrO 2 .
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Yan Huo,Renzhe Li,Shijian Xiu,Yating Wang,Lianji Zhang,Aihua Jin,Bo Quan
Gold (Au) and zirconia (ZrO 2 ) nanoparticles as the co–catalyst on modified multi–walled carbon nanotubes (Au/ZrO 2 @MWCNTs) were prepared by simple method. ZrO 2 and Au NPs, Au/ZrO 2 @MWCNTs exhibited excellent electrochemical performances when applied as glucose sensor . The sensor showed a wide linear operating range (10 μM to 13 mM glucose concentration), high sensitivity (162.52 μA cm −2 mM −1 at 10 μM–13 mM), and a low detection limit (0.95 μM) at 0.2 V. After 15 days of consecutive tests, over 90.0 % of the original current was retained, verifying the stability of Au/ZrO 2 @MWCNTs. Furthermore, the non–enzymatic glucose sensor also exhibited strong catalytic activity for the conversion of glucose to gluconic acid with a large active surface area. It is expected to be applicable in the further development of non–enzymatic glucose sensors.
研究领域:
材料科学
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电化学
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生物传感
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Shang-Yu Ou,Rong-Kun Liu,Kang Wang,Qian-Jiang Feng,Yuan Pu,Jie-Xin Wang
Nanosized zirconia with hollow structure combines the advantages of nanosized zirconia and hollow materials, is promising for a broad range of applications. Herein, we propose an approach for efficiently synthesizing hollow zirconia nanoparticles (HZNs) based on CaCO 3 templating by a high-gravity-assisted precipitation approach in a rotating packed bed (RPB) reactor. The as-prepared HZNs has an average hollow size of about 100 nm and the highest reported BET surface area of 398.9 m 2 /g. Compared to conventional stirred tank reactor, the RPB significantly shortens the coating reaction time from 30 min to 1 s to form core–shell structures. And the crystal form, shell thickness, hollow size and morphology can be readily controlled. Furthermore, the HZNs exhibit superior Congo red adsorption capacity of 1106.1 mg/g, which is increased by 50 % compared to the highest capacity reported in allied zirconia systems. Importantly, the HZNs also realize efficient adsorption of other azo dyes and phosphate.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jiawen Xu,Xiumin Shi,Mingyue Yi,Yanze Chi,Shuang Guo,Zhu Mao,Bing Zhao,Young Mee Jung
Noble metal-based surface-enhanced Raman scattering (SERS)-active substrates have been developed for decades. However, nonreproducible aggregation and photoinduced molecular degradation limit the development of SERS technology. To overcome the shortcomings of noble metal-based SERS substrates, we designed ZrO 2 -based nanoparticles (NPs). By doping Mg and/or Zn ions into these ZrO 2 NPs , the SERS activity was significantly improved. Mg/Zn codoping of ZrO 2 resulted in a much higher oxygen deficiency, thereby providing a sufficient surface state energy (Ess) level to enable charge transfer (CT). The primary contribution for the Mg/Zn-codoped ZrO 2 was determined to be from the CT resonance effect, resulting in an enhancement factor (EF) as high as 10 4 . Most importantly, the CT-induced enhancement of Raman scattering based on Mg/Zn-codoped ZrO 2 has already demonstrated some promising applications in highly sensitive quinolone antibiotic drug determination. Different kinds of quinolone antibiotic drugs can be easily identified and quantitatively analyzed with high sensitivity and reproducibility.
研究领域:
分析化学
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材料科学
·
药物分析
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2019
·
IF 4.029
Hang Qin,Wenming Guo,Xin Huang,Pengzhao Gao,Hanning Xiao
8 mol% yttria-stabilized ZrO 2 (8YSZ) nanofiltration (NF) membranes were prepared from size-controlled spherical ZrO 2 nanoparticles with an average diameter of ˜10 nm and a particle roundness value greater than 0.90, and the nanoparticles were efficiently fabricated by a reverse micelles (RMs)-mediated sol-gel process. It was found that yttria doping not only suppressed the tetragonal to monoclinic (t-m) phase transition, ensuring the membranes integrity, but also decreased the tetragonal grain size, increased the specific surface area, narrowed the pore size distribution and thus optimized the NF performance. The as-prepared 8YSZ NF membranes with a thickness of ˜260 nm exhibited high NF performances, while the pure water permeability and molecular weight cut-off (MWCO) were 3.9-4.2 L m −2 h -1 bar -1 and 800 ± 50 Da respectively. In the treatment of pesticide wastewater, the removal rate of carbofuran by 8YSZ NF membranes was more than 82%, while the maximum removal rate could reach 89%. Furthermore, the contaminated membranes could be restored as ever after alkali wash and low-temperature calcination , implementing multiple reuses.
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Meimei Guo,Jiale Han,Yurii Mishchenko,Andrii Butenko,Vladyslav Kovalenko,Tetiana Rozhkova,Hongyuan Zhao
In this work, the multifunctional nanocomposite of zirconium dioxide (ZrO 2 ) nanoparticles and single-walled carbon nanotubes (SCN) was prepared to modify the glassy carbon electrode (GCE) for the fabrication of ZrO 2 @SCN/GCE sensor. The fabricated nanocomposite electrochemical sensor was successfully used to achieve the efficient and sensitive detection of methyl parathion (MP). For the ZrO 2 @SCN nanocomposite, ZrO 2 nanoparticles could promote the enrichment of MP molecules on the electrode surface of ZrO 2 @SCN/GCE sensor because of the interplay between Zr-O groups and phosphorus groups of MP molecules; SCN presented efficient one-dimensional charge transport channels, which achieved the excellent conductivity property of carbon material. Moreover, SCN could greatly compensate for the non-conductivity of ZrO 2 nanoparticles. The functional combination of ZrO 2 nanoparticles and SCN enhanced the electrochemical detection performance of MP. The ZrO 2 @SCN/GCE sensor exhibited good MP detection property with low limit of detection of 6.15 nM (pH = 7.0, MP concentration: 0.01–10 μM). The fabricated sensor also showed good practical application property for the detection of MP in real samples (Lake water and green tea).
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Rui Ma,Xinjie Cui,Youyi Liu,Qianhui Xu,Weiwei Wang,Guangze Nie
Nanocomposites fabricated through the encapsulation of hydrated Zr(IV) oxide (HZO) nanoparticles within millimeter-scale hosts have emerged as promising candidates for phosphate sequestration from water. However, achieving ultrasmall nanoparticles within these hosts that maintain high decontamination reactivity is still a significant challenge. Herein, a novel nanocomposite (denoted HZO@CS-PEI) was obtained by confining the growth of HZO in dual crosslinked network hydrogels composed of interpenetrating chitosan (CS) and polyethyleneimine (PEI). Benefiting from the confinement effect of the dual cross-linked structure, the HZO within HZO@CS-PEI exhibited an ultrasmall size of approximately 2.16 nm. The incorporation of PEI enhanced both phosphate sequestration efficiency and mechanical stability of the nanocomposite, improving its practical applicability. Ultrafine dispersion of HZO nanoparticles within the composite matrix achieved a saturable phosphate adsorption capacity exceeding 64.41 mg/g at 298 K. Crucially, selective phosphate adsorption by HZO@CS-PEI remained effective in water containing high concentrations of coexisting anions and organic matter. The synergistic application of spectroscopic analyses and density functional theory (DFT) calculations revealed three distinct interaction mechanisms between HZO@CS-PEI and phosphate: inner-sphere complexation, hydrogen bonding, and electrostatic interactions. Furthermore, the used HZO@CS-PEI could be effectively regenerated with 0.1 mol/L NaOH for repeat use. In the column adsorption tests, phosphate-contaminated water was successfully treated by HZO@CS-PEI columns over 2750 bed volumes (BV), confirming operational stability under dynamic flow conditions.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
IONICS
·
2015
·Vol. 21
·期 10
·2763-2770
·
IF 1.754
Li Zihao,Chen Tingting,Liao Youhao
In this work, we report a new method to enforce the comprehensive performances of gel polymer electrolyte (GPE) for lithium ion battery. Poly(methyl methacrylate-acrylonitrile-vinyl acetate) [P(MMA-AN-VAc)] is synthesized as polymer matrix. The physical and electrochemical performances of the matrix and the corresponding GPEs, doped with nano-SiO 2 and nano-ZrO 2 particles individually or simultaneously, are investigated by scanning electron microscopy, thermogravimetry, electrochemical impedance spectroscopy, and charge/discharge test. It is found that the membrane co-doped with 5 wt.% nano-SiO 2 + 5 wt.% nano-ZrO 2 and the corresponding GPE combine the advantages of those doped individually with 10 wt.% nano-SiO 2 or 10 wt.% nano-ZrO 2 . Accordingly, the comprehensive performances of the membrane and the corresponding GPE, in terms of thermal stability, ionic conductivity, and electrochemical stability on the anode and cathode of lithium ion battery, is enforced by co-doping 5 wt.% nano-SiO 2 and 5 wt.% nano-ZrO 2 .
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Xueqin Wang,Lvye Dou,Zhaoling Li,Liu Yang,Jianyong Yu,Bin Ding
Functional nanoparticles modified silica nanofibrous materials with good flexibility, a hierarchical mesoporous structure, and excellent durability would have broad applications in efficient removal of contaminants, yet have proven to be enormously challenging to construct. Herein, we reported a strategy for rational design and fabricating flexible, hierarchical mesoporous, and robust ZrO2 nanoparticle-embedded silica nanofibrous membranes (ZrO2/SiO2 NM) for phosphate removal by combining the chitosan dip-coating method with the electrospinning technique. Our approach allows ZrO2 nanoparticles to be in situ firmly and uniformly anchored onto SiO2 nanofibers to drastically enlarge the specific surface area and porosity of membranes. Therefore, the resultant ZrO2/SiO2 NM exhibited a prominent removal efficiency of 85% and excellent adsorption amount of 43.8 mg P g–1 membranes in 30 min toward phosphates. Furthermore, the removal performance toward different types of phosphates revealed that the resultant membranes also could be used to remove phosphates in detergent and fertilizer water samples. More importantly, the membranes with good flexibility could directly be taken out from solution after use without any post-treatment. Such a simple and intriguing approach for fabricating nanofibrous membranes may provide a new platform for constructing membranes with superb phosphate removal performance.
研究领域:
环境科学
·
纳米材料学
·
水处理技术
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功能材料
·
污染控制
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）