FOOD CHEMISTRY
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2020
·
IF 6.306
Pei Li,Muhan Zhang,Chong Sun,Daoying Wang,Weimin Xu,Ye Zou,Jingjing Ma,Yongzhi Zhu
The detection of phospholipids oxidation is important for meat control and disease prevention. In this paper, a photoelectrochemical sensor based on printable mesoscopic chip (PMC) for fast and real-time monitoring phospholipids oxidation was designed and fabricated. TiO 2 , ZrO 2 and carbon films of PMC were screen-printed onto the FTO glass layer by layer. The PMC and the feasibility for determination of phospholipids oxidation were investigated by scanning electron microscope (SEM), UV– vis spectroscopy, cyclic voltammograms (CVs) and electrochemical impedance spectroscopy (EIS), etc. The short circuit current (J sc ) was used as a signal current, which would decrease if phospholipids in PMC were undergoing oxidation for the change of electrical properties. Compared with other methods, phospholipids in PMC did not require pretreatment, and the process was nondestructive and real-time. Meanwhile, this method showed high sensitivity and good selectivity. The fabricating process of PMC is simple, and the costs are low, relatively.
研究领域:
分析化学
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生物医学工程
·
食品科学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xian Li,Pingying Liu,Jumei Li
In this study, a facile and efficient approach was proposed for fabricating magnetically separable core-shell structured nanocomposites consisting of a magnetic Fe 3 O 4 core, a mesoporous ZrO 2 (mZrO 2 ) interlayer and an outer Ag nanoparticles shell using a sol-gel process and a wet chemistry method at ambient condition, and the hydrothermal treatment . The resulting Fe 3 O 4 /mZrO 2 /Ag nanocomposites were analyzed by TEM and SEM images, XPS , EDX and XRD spectra. Their photocatalytic activity was examined for the degradation of methylene blue under UV light . The effect of initial concentration, catalyst dosage and pH value was investigated and the results were discussed. Fe 3 O 4 /mZrO 2 /Ag nanocomposites showed higher photocatalytic activity, compared with Fe 3 O 4 /mZrO 2 composites. The PL analysis revealed Fe 3 O 4 /mZrO 2 composites possessed the enhanced separation efficiency of electron-hole pairs in comparison with Fe 3 O 4 /mZrO 2 . Moreover, the Fe 3 O 4 /mZrO 2 /Ag nanocomposites can be easily separated and recycled with an external magnetic field, and so they present remarkable reusability.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Ning Lu,Shurui Fan,Yaxu Zhao,Boxuan Yang,Zhongqiu Hua,Yi Wu
In this work, a selective methane gas sensor was prepared based on In 2 O 3 to eliminate the serious cross-sensitive sensitivity to VOCs, NO 2 , and CO, which are typical interfering gases for methane detection in domestic. The catalytic films of Pt-TiO 2 , Pt-CeO 2 , and Pt-ZrO 2 were placed on the top of the sensing layer, i.e., In 2 O 3 loaded with Pd. Catalytic films were designed as filters to catalytically oxidize the interfering gases, such as VOCs, to prevent them reaching the surface of the sensitive layers. Thanks to this design, our sensors showed a high selectivity to methane, even in the presence of ethanol, CO, and NO 2 . In addition, we confirmed via the power-law response of oxygen that the basic sensing mechanism between Pd-In 2 O 3 and the sensor-printed catalytic films are kept the same. Both follow the general model with MOS sensors, which involves an electron transfer process resulting from the adsorption of oxygen on the surface and interaction with methane molecules. The present study showed that catalytic filter films (Pt-TiO 2 , Pt-CeO 2 , and Pt-ZrO 2 ) printed on Pd-In 2 O 3 sensors could enhance the selective response to methane for methane monitoring.
研究领域:
材料科学
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化学传感器
·
气体传感技术
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Qingsong Zhang,Qimou Deng,Yaoyao Zhang,Yang Xiao,Chunlei Zhang,Haiyi Gong,Qingming Zeng,Qingyan Zhang,Qingyi Zeng
Unavoidable organics in uranium wastewater or contaminated waters derive great challenges to traditional uranium removal techniques. Here, a drivingpower enhanced photocatalytic fuel cell (DEPFC) is designed by using a carbon felt (CF)-based UiO-66-NH 2 derived zirconia (ZrO 2 )/N-doped porous carbon (ZrON-C/CF) cathode and a monolithic photoanode, composing of a front FTO glass-based BiVO 4 film and a rearmounted Si photovoltaic cell, for effectively oxidizing organics and simultaneously reducing UO 2 2+ from complex wastewater under sunlight illumination. The water contact angle measurements demonstrate that ZrO 2 can improve the hydrophilia of cathode thus increases the contact between UO 2 2+ and cathode. The density functional theory indicates that N-doping can enhance the electronegativity of cathode and increases UO 2 2+ adsorption. Meanwhile, the enhanced UO 2 2+ reduction facilitates the charge separation in BiVO 4 film, therefore enhancing the organic oxidation. Consequently, under AM 1.5 illumination, the designed DEPFC can remove almost 100% of UO 2 2+ and simultaneous degrade 99% organics within 40 min
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2017
·
IF 2.048
Yi Ding,Xinggui Long,Shuming Peng,Dong Zhang,Zhaoyi Tan,Xirui Lu
Zr 1− x − y Ce x Nd y O 2− y/ 2 ceramics, which were designed as waste form materials, were obtained by simultaneous substitution of Ce 4+ and Nd 3+ for Zr 4+ in ZrO 2 . The influences of the simultaneous substitution of Ce and Nd on phase transformation of ZrO 2 were investigated systematically. Also, the aqueous durability of the ceramics was evaluated. The results show that the phase transformation caused by the simultaneous substitution mainly relates to the total content of Ce and Nd. The ZrO 2 ceramics containing Ce + Nd < 30 mol% exhibit both monoclinic and cubic phases, while the ceramics containing Ce + Nd ≥ 30 mol% are cubic phase. And the cubic phase can be stabilized by incorporating 30 mol% Ce + Nd. Moreover, LR i are modified by the incorporation of Ce and Nd, because of the presence of oxygen vacancies . The Nd and Ce co-doped zirconia waste form exhibit excellent aqueous durability (∼10 −5 g m −2 d −1 ).
研究领域:
材料科学
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核废料管理
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陶瓷工程
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DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 2
·95
·
IF 3.504
Yinghan Liu,Se Wang,Zhuang Wang,Nan Ye,Hao Fang,Degao Wang
Metal-based nanoparticles (NPs) are the most widely used engineered nanomaterials. The individual toxicities of metal-based NPs have been plentifully studied. However, the mixture toxicity of multiple NP systems (n≥ 3) remains much less understood. Herein, the toxicity of titanium dioxide (TiO2) nanoparticles (NPs), silicon dioxide (SiO2) NPs and zirconium dioxide (ZrO2) NPs to unicellular freshwater algaeScenedesmus obliquuswas investigated individually and in binary and ternary combination. Results show that the ternary combination systems of TiO2, SiO2and ZrO2NPs at a mixture concentration of 1 mg/L significantly enhanced mitochondrial membrane potential and intracellular reactive oxygen species level in the algae. Moreover, the ternary NP systems remarkably increased the activity of the antioxidant defense enzymes superoxide dismutase and catalase, together with an increase in lipid peroxidation products and small molecule metabolites. Furthermore, the observation of superficial structures ofS. obliquusrevealed obvious oxidative damage induced by the ternary mixtures. Taken together, the ternary NP systems exerted more severe oxidative stress in the algae than the individual and the binary NP systems. Thus, our findings highlight the importance of the assessment of the synergistic toxicity of multi-nanomaterial systems.Keywords:metal-oxide nanoparticles;mixture toxicity;freshwater algae;cellular response;oxidative damage
研究领域:
环境科学
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毒理学
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DOI
PubMed
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Weijun Li,Jiayong Pang,Chao Xu,Jing Tang,Xiangzhe Zhu
Superhydrophobic coatings show promising potential for applications in petroleum pipeline anticorrosion due to their exceptional water repellency. A core bottleneck in the development of superhydrophobic coatings is their limited mechanical and corrosion durability, which is closely linked to microstructural fragility. Inspired by the protective mechanism of leaf mineralization, a superhydrophobic coating is developed via a simple low-temperature spraying method to reduce wear and corrosion in pipelines. A micro–nano structure is obtained by the synergistic effect of polydopamine (PDA)-linked ZrO2 nanoparticles and carbon nanotubes (CNTs) (ZrO2/CNTs@PDA). The CNTs imitate cellulose nanofibers to create a three-dimensional (3D) porous network. The ZrO2 nanoparticles simulate plant-based mineralized materials in both the internal holes of the network and the surfaces of the carbon nanotubes, thereby enhancing the mechanical strength and corrosion resistance of the ZrO2/CNTs@PDA coating. The ZrO2/CNTs@PDA coating exhibits a high water contact angle (WCA) of 165.6°, a small sliding angle (SA) of 6°, and an oil contact angle of 138.8°, demonstrating excellent superhydrophobicity and oleophobicity. The ZrO2/CNTs@PDA hydrophobic coating shifts the corrosion potential of X80 steel from −0.643 to +0.305 V and has a 7 orders of magnitude decrease in corrosion current density. The coating’s corrosion resistance showed no significant change after being immersed in 3.5 wt % NaCl solution for 21 days, confirming its excellent durability. Even after 1500 cm of abrasion, the coating retained a WCA above 150°, demonstrating its remarkable wear resistance. The coating exhibits excellent self-cleaning and antifouling performance, effectively repelling the accumulation of various substances such as sand, methylene blue, oil, and milk. It is worth emphasizing that the ZrO2/CNTs@PDA hydrophobic coating can be produced efficiently on a large scale while also demonstrating effective corrosion resistance, self-cleaning, and antifouling properties even under harsh operating conditions.
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PubMed
高影响因子
Advances in Materials Science and Engineering
·
2018
·Vol. 2018
·期 1
·8191095
·
IF 1.372
Xue-Yu Tao,Jie Ma,Rui-Lin Hou,Xiang-Zhu Song,Lin Guo,Shi-Xiang Zhou,Li-Tong Guo,Zhang-Sheng Liu,He-Liang Fan,Ya-Bo Zhu
Star-like nano-ZrO 2 has been synthesized using Zr(NO 3 ) 4 ·5H 2 O as zirconium source by a hydrothermal process without any template and surfactant. The structure of the as-prepared ZrO 2 powder was investigated by multiple advanced analytical methods. The results showed that CH 3 COO − and NO 3 − had great effects on the formation of star-like ZrO 2 nanostructures. The as-prepared ZrO 2 had a superior catalytic activity, and the reason for it was analyzed by UV-Vis diffuse reflectance spectroscopy. The effect of raw material ratios on the photocatalytic property of ZrO 2 was studied. The synthesized ZrO 2 showed a narrow bandgap (3.50–3.85 eV) and an excellent photocatalytic activity, and the degradation of RhB was up to nearly 100% in 30 min with this photocatalyst.
研究领域:
材料科学
·
纳米科技
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光催化
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无机化学
·
环境功能材料
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DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2020
·
IF 4.652
Jianlong Chai,Yabin Zhu,Zhiguang Wang,Tielong Shen,Yiwen Liu,Lijuan Niu,Shufen Li,Cunfeng Yao,Minghuan Cui,Chao Liu
Al 2 O 3 –ZrO 2 (3Y)–SiC ceramic composites were prepared by spark plasma sintering in vacuum under 40 MPa of uniaxial compression between 1300 °C and 1400 °C. The effect of nano-size SiC and sintering temperature on the microstructure and mechanical properties of ceramic composites were investigated. The results showed that SiC particles was uniformly distributed in the composite, mainly within the matrix grains. Sintering temperature and SiC particles caused the shape of alumina grains to be columnar. The flexural strength of 22.3 vol% Al 2 O 3 -57.7 vol% ZrO 2 -20 vol% SiC sintered at 1350 °C composites was 1081 MPa, fracture toughness was 15.18 MPa m 1/2 and hardness was 16.42 GPa. The addition of SiC particles leads to grain boundary strengthening, and the change of fracture mode and cracks deflection and bridging are considered to be the main reasons for the increase in material fracture toughness.
研究领域:
材料科学
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陶瓷学
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复合材料
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固态物理
·
结构材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xuetong Zhao,Yan Hu,Qi Wang,Gang Liu,Hansheng Cai,Hongwen Liu,Jindong Yang,Liangbin Ai,Jimou He,Yu Gan,Lulu Ren,Ruijin Liao
Cold sintering bridges the ZnO–ZrO 2 co-sintering temperature mismatch. • ZrO 2 is retained as an intergranular pinning phase at 850 °C. • ZrO 2 pinning refines ZnO grains from 2.48 to 1.65 μm. • The optimized ceramic achieves α = 65 and E b = 992 V mm −1 . ZnO varistor ceramics are widely employed for overvoltage protection in electronic circuits and power grids owing to their excellent nonlinear non-ohmic characteristics. However, their insufficient voltage gradient limits further development toward miniaturized, lightweight, and highly reliable devices. Herein, ZrO 2 is introduced as a secondary pinning phase to refine ZnO grains and promote the formation of Bi-rich intergranular phases, enabling the synergistic enhancement of breakdown field ( E b ) and nonlinear response. More importantly, the low-temperature densification feature of cold sintering bridges the co-sintering temperature gap in ZnO-based composite ceramics, suppressing the solid solution of Zr 4+ ( r = 0.80 Å) into the Zn 2+ ( r = 0.74 Å) lattice and thus greatly enhancing the effectiveness of ceramic compositing. At the optimized ZrO 2 content of 2 wt%, the segregated ZrO 2 secondary phase pins grain-boundary migration and reduces the average ZnO grain size from 2.48 to 1.65 μm. Moreover, the increased formation of Bi-rich boundary phases provides additional interfacial sites for oxygen adsorption and electron trapping, raising interface state density ( N s ) from 4.7518 × 10 16 m −2 for the undoped ceramic to 7.4102 × 10 16 m −2 with 2 wt% ZrO 2 addition and barrier height ( φ b ) to 0.9245 eV. As a result, the ceramic achieves a high nonlinear coefficient ( α ) of 65 and an enhanced E b of 992 V mm −1 . Further ZrO 2 incorporation suppresses the grain size to 1.40 μm and increases E b beyond 1200 V mm −1 , highlighting the effectiveness of cold sintering in constructing high-gradient ZnO-based composite varistors. This finding demonstrates that cold sintering opens a new pathway for the fabrication of composite ceramics with improved co-sintering compatibility.
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2026
·Vol. 118
·期 1
·14
·
IF 4.2
Li Jingyu,Zhou Danchi,Tian Panpan,He Cewen,Xu Nana,Li Yuanbing
Zirconia nanofibers frequently suffer from undesirable phase transformations and abnormal grain growth at elevated temperatures, significantly limiting their high-temperature applications. To overcome these challenges, we developed an innovative biphasic precursor system that combines zirconium acetate and zirconium oxychloride as co-precursors. By precisely optimizing the molar ratio of these precursors, we successfully fabricated high-quality yttria-stabilized zirconia (YSZ) nanofibers through a combination of electrospinning and sol-gel processing. Extensive characterization (FTIR, STA/TG-MS, XRD, SEM, and TEM) revealed that the optimal precursor ratio of 8:2 (zirconium acetate: zirconium oxychloride) effectively suppresses grain growth while maintaining smooth, defect-free fiber surfaces with uniform diameter distribution. The resulting nanofibers calcined at 700 °C exhibited outstanding mechanical properties, including superior tensile strength (0.25 ± 0.02 MPa) and minimal bending stiffness (23 ± 2 mN). At 1000 °C, these nanofibers maintain structural integrity with improved strength retention (0.18 ± 0.01 MPa) and controlled grain growth, while preserving cubic phase stability. The biphasic precursor strategy enables precise control over crystallization kinetics and effectively suppresses detrimental phase transformations. This study not only addresses the critical issue of thermal instability in zirconia nanofibers but also provides new insights into precursor selection for the design of high-performance ceramic nanofibers.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yao-Dong Hao,Jing-Jing Huang,Xiao-dong Wang,Xi Zhao,Wen-Xia Zhang,Cen Tang,Lu Liu,Wen-Zhi Jia,Meng-Fei Luo,Jian Chen
Developing efficient and durable catalysts for catalytic oxidation reaction remains a major challenge. In this work, we found that Pt/ZrO 2 catalyst demonstrated superior performance compared to Pt sites supported on other oxides (e.g., Pt/Al 2 O 3 , Pt/CeO 2 and Pt/Ce 0.6 Zr 0.4 O 2 ) for styrene combustion. To further understand the active sites in Pt/ZrO 2 catalyst, a series of Pt/ZrO 2 catalysts were synthesized via wet impregnation and calcined at different temperatures (250, 300, 500, 700 and 900 °C). Among them, Pt/ZrO 2 -300 (calcined at 300 °C) exhibited the superior performance for styrene combustion. Comprehensive characterizations revealed that the calcination temperature critically influences the geometric and electronic structures of Pt sites, thus governing the generation of Pt σ+ -ZrO 2 interfacial active sites. A moderate calcination temperature is crucial for forming such interfacial active sites, lower temperatures fail to generate them, while higher temperatures result in nanoparticle sintering and a consequent diminution of these sites. Pt/ZrO 2 -300 features small Pt nanoparticles and a higher concentration of active Pt σ+ species, beneficial for the generation of interfacial active sites. In addition, our findings demonstrate that the superior performance of Pt/ZrO 2 -300 in styrene adsorption and oxygen activation stems from its abundant Pt σ+ -ZrO 2 interfacial active sites. Therefore, this work provides valuable insights for the rational design of robust catalysts with interfacial active sites.
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