CHEMOSPHERE
·
2021
·
IF 7.086
Hao Dong,Huan Tang,Xinxing Shi,Wenlan Yang,Wenjing Chen,Han Li,Yu Zhao,Zhengyong Zhang,Ming Hua
Efficient elimination of fluoride from wastewater is an urgent need for ensuring water safety. In the present study, a stable and reusable nanocomposite (NCO@PAE) was synthesized by impregnating nanosized cerium oxides (NCO) inside a porous polystyrene anion exchanger (PAE) host for efficient fluoride removal from wastewater. The newly fabricated NCO@PAE exhibited excellent resistance to acid and alkali environment, allowing it to be utilized in a wide pH range (2–12). Fluoride uptake onto NCO@PAE was a pH-dependent process, which could reach the maximum capacity at pH 3.0. Compared with its host PAE , NCO@PAE showed conspicuous adsorption affinity towards fluoride in the coexistence of other competing anions at high concentrations. Adsorption kinetics confirmed its high efficiency for achieving equilibrium within 120 min. Fixed-bed adsorption runs demonstrated that the effective processing capacity of NCO@PAE for synthetic fluoride-containing wastewater (initial fluoride 2.5 mg/L) was about ~330 BV (bed volume), while only 22 BV for the host PAE . The exhausted NCO@PAE could be effectively revived by a simple in-situ desorption method for long-term cycle operation without conspicuous capacity loss. All the results indicated that NCO@PAE is a reliable and promising adsorbent for water defluoridation.
研究领域:
环境科学
·
水处理技术
·
材料科学
·
吸附化学
·
环境功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-16
·
IF 10.6
Xiao Rui,Liu Jia,Shi Lin,Zhang Ting,Liu Jie,Qiu Shuyi,Ruiz Matthieu,Dupuis Jocelyn,Zhu Liping,Wang Lin,Wang Zheng,Hu Qinghua
Background Despite recent advances the prognosis of pulmonary hypertension remains poor and warrants novel therapeutic options. Extensive studies, including ours, have revealed that hypoxia-induced pulmonary hypertension is associated with high oxidative stress. Cerium oxide nanozyme or nanoparticles (CeNPs) have displayed catalytic activity mimicking both catalase and superoxide dismutase functions and have been widely used as an anti-oxidative stress approach. However, whether CeNPs can attenuate hypoxia-induced pulmonary vascular oxidative stress and pulmonary hypertension is unknown. Results In this study, we designed a new ceria nanozyme or nanoparticle (AuCeNPs) exhibiting enhanced enzyme activity. The AuCeNPs significantly blunted the increase of reactive oxygen species and intracellular calcium concentration while limiting proliferation of pulmonary artery smooth muscle cells and pulmonary vasoconstriction in a model of hypoxia-induced pulmonary hypertension. In addition, the inhalation of nebulized AuCeNPs, but not CeNPs, not only prevented but also blunted hypoxia-induced pulmonary hypertension in rats. The benefits of AuCeNPs were associated with limited increase of intracellular calcium concentration as well as enhancement of extracellular calcium-sensing receptor (CaSR) activity and expression in rat pulmonary artery smooth muscle cells. Nebulised AuCeNPs showed a favorable safety profile, systemic arterial pressure, liver and kidney function, plasma Ca 2+ level, and blood biochemical parameters were not affected. Conclusion We conclude that AuCeNPs is an improved reactive oxygen species scavenger that effectively prevents and treats hypoxia-induced pulmonary hypertension. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Bio
·
2024
·
IF 8.7
Tianming Lu,Zixian Liu,Ruoning Qian,Yitian Zhou,Jun Li,Qiang Zhang,Hao Yang,Wenli Lu,Yanlin Xin,Zejuan Xie,Lesan Yan,Shanshan Wang,Ruogu Qi,Zhengguang Zhang
Sorafenib (SF), a multi-targeted tyrosine kinase inhibitor, serves as a primary therapeutic modality for advanced liver cancer. Nonetheless, its clinical efficacy is hindered by various obstacles, such as limited bioavailability and inadequate accumulation. This study introduces a novel biomimetic mineralization enzyme, known as BSA@Pt/Ce6/SF@M (PCFM). The PCFM incorporates platinum (Pt) as a catalytic agent, SF as a molecular-targeted therapeutic agent, and Ce6 as a photosensitizer within liver cancer cell membranes. This strategy enables the combination of various anti-tumor treatments, such as photodynamic therapy (PDT) and autophagy induction, leading to increased bioavailability of SF and achieving a multidimensional synergistic anticancer effect. The PDT effect produced by Ce6 in PCFM greatly enhances SF-induced autophagy, effectively promoting autophagic cell death. Furthermore, Pt dissociates from the biomineralization process, acquiring peroxidase properties through chemokinetic reactions. This facilitates the catalysis of significant oxygen generation, addressing the challenge of hypoxia in the tumor microenvironment and improving the efficacy of PDT. Moreover, the SF enhances therapeutic efficacy by inducing autophagy in response to energy deprivation, as indicated by the reduced levels of HIF-1α, p62, along with increased levels of ROS and LC3-Ⅱ. This biomineralization-based nanoenzyme exhibits strong anti-tumor characteristics, offering a novel strategy for overcoming challenges in liver cancer treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zhi-Gang Wang,Lin Cui,Zhi-Hao Ni,Peng-Bo Li,Zhang-Hao Wang,Reng-Qian Liu,Hui-Chong Wang,Mei-Qi Xue,Wen-Yuan Mi,Yong-He Zhang,Xuan-Li Wang,Min Xie,Xi-Wen Song,Ren-De Mu,Jia-Hu Ouyang
A novel La 2 (Zr 1- x Ce x ) 2 O 7 –7.5 mol.% Sc 2 O 3 -0.5 mol.% Y 2 O 3 co-stabilized ZrO 2 (SYSZ) composites with hypoeutectic composition were elaborately designed for potential applications in thermal barrier coatings (TBCs) operating above 1400 °C. This study initially explores the effects of Ce-doping on the phase structure, microstructure, and mechanical properties of the composites, with particular emphasis on high-temperature microstructural stability and grain growth kinetics. Experimental results reveal that these composites exhibit mixed t / c -zirconia and pyrochlore zirconate phases. Compared with La 2 Zr 2 O 7 , the composites exhibit superb Vickers hardness of 11.4 GPa combined with an excellent indentation toughness of 2.8 MPa·m 1/2 could be achieved. La 2 (Zr 0.3 Ce 0.75 ) 2 O 7 -SYSZ exhibits the smallest grain growth, ranging from 0.99 to 2.75 μm after being thermally exposed for 300 h at 1450 °C. The grain growth kinetics with a growth exponent ( n ) increasing approximately from 2 to 4, indicating a transition in the grain-growth mechanism, which shifts from lattice-diffusion-controlled drag to boundary-diffusion-controlled drag. Our results demonstrate La 2 (Zr 1- x Ce x ) 2 O 7 -SYSZ composites are potential candidates for high -temperature TBC applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xingzhuo Xiong,Zihao Xu,Biao Xu,Chunyu Li,Wubin Dai
Borate-based phosphors have emerged as ideal host materials for near-ultraviolet ( n UV) pumped phosphor-converted white light-emitting diodes (pc- w LEDs) owing to their mild synthesis conditions, broad transparency window, and excellent chemical and thermal stability. Cubic Ba 3 Y 2 B 6 O 15 (BYB) features a highly symmetric lattice structure, providing stable binding sites for rare-earth ions. Its [YO 6 ] octahedral structure allows for controllable lattice distortion, making it an ideal host for multivalent rare-earth luminescent systems. In this study, Ce 3+ , Eu 3+ , Eu 2+ , and Ca 2+ co-doped BYB nanophosphors were prepared in an Ar atmosphere. The partial substitution of Ba 2+ by Ca 2+ promotes the generation of more oxygen vacancies, which in turn induces the self-reduction of Eu 3+ to Eu 2+ . The phosphor exhibits strong absorption characteristics at 365 nm. Acting as an efficient sensitizer, Ce 3+ can simultaneously transfer energy to Eu 2+ and Eu 3+ . By tuning the Ca 2+ content, the Eu 3+ /Eu 2+ ratio and the emission color can be continuously adjusted, achieving a smooth transition from blue-green to orange-red. This Ca 2+ mediated strategy stabilizes the coexistence of Eu 2+ and Eu 3+ , addressing the key limitations of traditional single-phase phosphors. It provides a novel approach for developing high-performance n UV-excited warm white phosphors and demonstrates potential for widespread application in highly efficient pc- w LED devices.
✓ 已验证
产品关联
DOI
高影响因子
THERMOCHIMICA ACTA
·
2026
·
IF 3.6
Yao Zheng,Baitong Wang,Fengnian Zhao,Mu Li,Dawei Tang
Porous structures are widely utilized in the functional layers of solid oxide fuel cells (SOFCs), in which thermal conductivity plays a critical role in thermal management and structural stability. In this work, samarium-doped ceria (Ce 0.8 Sm 0.2 O 1.9 , SDC) was selected as the matrix material, with carbon powder as a pore former, to systematically investigate the evolution of thermal conductivity under varying porosity and temperature conditions. Microstructural characterization revealed a distinct sintering-induced sandwich-like stratification at low pore-former contents, which significantly influenced the heat transport behavior. To capture this unique microstructural feature, a theoretical heat conduction model was developed. This proposed model comprehensively accounts for porosity, structural non-uniformity, and temperature, enabling the quantitative prediction of the effective thermal conductivity of porous SDC functional layers. The model predictions exhibit excellent agreement with experimental results, with a mean relative error (MRE) of 4.16% and a determination coefficient (R²) greater than 0.98. This study establishes a reliable and physically grounded approach for predicting the thermal conductivity of porous functional layers, providing theoretical guidance for the optimization of thermal performance and structural design of materials for intermediate-temperature SOFCs (IT-SOFCs).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118716
·
IF 6.3
Quan Han,Yuhuan Ji,Yang Liu,Caiyun Wang,Kechun Shen,Yi Zhang,Chao Ma,Hailong Wang,Daoyang Han,Gang Shao
Fabricating high-performance high-entropy ceramics (HECs) with complex geometries remains a challenge. Here, high-entropy fluorite (Ce 0.2 Zr 0.2 Ti 0.2 Sn 0.2 Ca 0.2 )O 2-δ ceramics were fabricated by digital light processing (DLP). The effects of slurry solid loading (76–80 wt%) on sintering behavior, microstructure, mechanical properties, and thermal transport were systematically investigated and compared with pressureless sintering. Increasing the solid loading to 80 wt% increased the green-body density, reduced linear shrinkage, and produced ceramics with a bulk density exceeding 5.0 g/cm³ (>88% theoretical density). EDS analyses revealed compositionally homogeneous microstructures without detectable micron-scale elemental segregation within the spatial resolution of the present measurements. DLP-80 HEFO exhibited the highest flexural and compressive strengths among the printed samples while maintaining low thermal conductivity values of 1.7–2.2 W·m⁻¹ ·K⁻¹ from 25 to 1000 °C. This work demonstrates that optimizing slurry solid loading provides an effective strategy for fabricating high-entropy fluorite ceramics with balanced densification, mechanical performance, and thermal-insulation capability.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Junjie Zhang,Jiayuan Xu,Jijun Ding,Haixia Chen
High-efficiency oil-water separation membranes based on low-mesh copper mesh offer advantages in cost-effectiveness, scalability, and adaptability to complex separation scenarios. However, their inherently large pore size usually results in insufficient separation precision. In this work, the Cu/PVDF/CeO 2 composite membrane is fabricated on the copper mesh substrate by combining the non-solvent induced phase separation method with spraying and immersion techniques. By adjusting the porogen content, the pore size of the composite membrane is effectively regulated, leading to enhanced separation efficiency. This strategy aims to simultaneously achieve superhydrophobicity and high-precision oil-water separation on low-mesh-number copper mesh substrates. The Cu/PVDF/CeO 2 composite membrane achieves a maximum water contact angle of 158.7°, exhibiting superhydrophobicity. In oil-water separation tests, the membrane demonstrates a separation efficiency exceeding 98.5% for all tested oil-water mixtures. Optimal performance is observed in the separation of the immiscible mixture of dichloromethane and water, where the membrane achieves a separation efficiency of 99.83% alongside a high separation flux of 79138.4 L m −2 ·h −1 . Additionally, the composite membrane exhibits excellent long-term stability and cycling stability. This study provides a feasible method for the preparation of high-efficiency oil-water separation composite membranes based on copper mesh substrates, with potential applications in industrial wastewater treatment and environmental remediation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Rui Sun,Yijin Tian,Siyang Xue,Yueting Cui,Yunchen Zhao,Shuaishuai Li,Jiawei Yuan,Xuanxuan Zhang,Chengdong Zhang
Persister cells that survive disinfection can recover and drive bacterial regrowth, thereby limiting long-term treatment efficacy and remaining a challenge even for nano-enabled water treatment. Here, we subjected Escherichia coli to 14 cycles of high-dose exposure to silver nanoparticles (AgNPs) and found that repeated treatment increased persister levels by nearly 1,000-fold after recovery and regrowth. During the NP challenge, evolved cells displayed altered K + flux, reduced cell volume, softened envelope mechanics, and envelope remodeling, consistent with an osmotic-stress-associated adaptive state. Following AgNP removal and regrowth, survivors from evolved populations exhibited lower ATP levels, longer lag times, and elevated guanosine tetraphosphate (ppGpp) levels compared with survivors from the wildtype population, indicating that AgNP adaptation drives cells into a persistence-prone recovery state rather than simply improving acute survival. Similar osmotic stress-associated responses were also induced by cyclic exposure to Fe 3 O 4 , CeO 2 , and SiO 2 NPs, indicating convergence on a common envelope-interface mechanism across chemically distinct nanomaterials. Importantly, imposing an osmotic downshift during various NP exposure markedly reduced subsequent persister formation, bringing it close to baseline levels. This intervention effectively reduced persister enrichment in tap water and river water, but was much less effective in artificial seawater, highlighting osmolarity as a key determinant of NP-induced persistence. Together, these findings show that nano-enabled disinfection can unintentionally promote persistence through challenge-phase osmotic adaptation and identify osmotic-context manipulation as a simple and scalable strategy to limit residual survival and post-treatment regrowth.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Xinyue Chen,Binjian Chen,Yudong Mao,Min Yan,Zhihao Liu,Yuxuan Jiang,Xianqun Jin
FeNiP-CeO 2 /NF heterostructure is designed for efficient oxygen evolution reaction. • Superior OER activity: 231, 304, 390 mV at 100, 500, 1000 mA·cm −2 . • Performance optimized by heterostructure design and interfacial synergistic effect. • The catalyst exhibits outstanding long-term stability of 200 h at 500 mA·cm −2 . Developing efficient and durable non-noble-metal electrocatalysts for the oxygen evolution reaction under industrially relevant conditions remains a significant challenge. Herein, a heterostructured FeNiP-CeO 2 /NF electrocatalyst was rationally designed and synthesized via a two-step hydrothermal–phosphidation strategy. The resulting catalyst features hierarchically assembled FeNiP nanosheets intimately coupled with oxygen-vacancy-rich CeO 2 nanoparticles, forming abundant heterointerfaces. Benefiting from the synergistic interaction between bimetallic Fe–Ni phosphide active sites and CeO 2 -induced interfacial charge redistribution, FeNiP-CeO 2 /NF exhibits markedly enhanced OER activity in alkaline media, delivering low overpotentials of 231, 304, and 390 mV at current densities of 100, 500, and 1000 mA cm −2 , respectively. In addition, the catalyst demonstrates excellent long-term durability, maintaining stable operation for 200 h at 500 mA cm −2 with a Faradaic efficiency of 99.3%. This work demonstrates that rational heterointerface engineering combined with hierarchical structural design is an effective strategy for constructing highly active and robust OER electrocatalysts, highlighting the promising potential of FeNiP-CeO 2 /NF for industrial water electrolysis applications. Download: Download high-res image (256KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Shuangjiang He,Ran Wang,Fangfang Wu,Xiaoshan Wang,Jian Wang,Yang Liu,Xiao Zhang,Sen Liang
Negative temperature coefficient (NTC) thermistors are critical components in electronic circuits for overheat protection, owing to their exceptional temperature compensation properties. However, the susceptibility of the inherent spinel structure to degradation in low-oxygen environments limits their operational stability. We report the design of a robust inverse spinel-perovskite-fluorite three-phase heterostructure, achieved by combining heterojunction and entropy engineering to withstand low-oxygen environments. By optimizing Mn doping and regulating R-O bonds, the high-temperature/low-oxygen grain boundary resistance is minimized to 0.55 Ω·cm. This specific architecture effectively suppresses interphase elemental diffusion and stabilizes manganese ions entirely as Mn 2+ . Consequently, the ceramics exhibit exceptional environmental stability, featuring restricted room-temperature resistance ( R 25 ) and material constant ( B 25/50 ) drifts of 0.93% and 0.11%, respectively, alongside a minimal aging rate of 0.2% after 600 h in air. A substantial room-temperature temperature coefficient of resistance (TCR) of −5.98% ensures high-precision sensing capabilities. Density functional theory (DFT) calculations reveal that La and Ce dopants establish high energy barriers against elemental migration, while an internal electric field and interfacial coupling synergistically stabilize the hole-electron conduction mechanism. This study provides a compelling ceramic heterostructure paradigm for advanced sensing in extreme environments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2026
·
IF 2.6
Zheng Weiping,Xia Wenjun,Li Kangyuan,Wang Jingting,Hao Lifeng
A dual-interface engineering strategy is proposed to exploit the anticorrosion potential of cerium oxide fillers by combining an oxygen-vacancy-rich porous core with a fluorinated superhydrophobic shell. Porous CeO 2 (P-CeO 2 ) is synthesized via a P123-templated hydrothermal process and then functionalized with perfluoroalkyl silane to form fluorinated porous CeO 2 (F-CeO 2 ). Conventional CeO 2 , P-CeO 2 , and F-CeO 2 are dispersed into a fluorocarbon resin to prepare composite coatings at different filler loadings. Characterization confirms that fluorination preserves the mesoporous fluorite framework while converting the surface from hydrophilic to superhydrophobic (water contact angle 164°) and promoting an oxygen‑vacancy-enriched surface character. The fluorinated porous particles also show improved colloidal stability in xylene, enabling homogeneous dispersion in the coating matrix. Electrochemical tests in 3.5 wt.% NaCl identify 1.0 wt.% F-CeO 2 as the optimal formulation: The corrosion current density decreases from 5.226 μA·cm −2 for the neat resin to 0.00353 μA·cm −2 , corresponding to 99.93% inhibition efficiency and exceeding coatings with conventional CeO 2 (91.50%) or P-CeO 2 (94.03%). Electrochemical impedance spectroscopy shows that this coating maintains near-ideal capacitive behavior over 21 days of immersion, with coating and double-layer constant-phase exponents remaining ~ 0.92-1.00; a diffusion-controlled Warburg element emerges only after prolonged exposure, indicating delayed electrolyte access to the metal/coating interface. AFM and XRD support a synergistic mechanism in which the fluorinated shell suppresses wetting and ion ingress, while the oxygen-vacancy-rich porous core promotes active passivation. Here, the “dual-functional” design refers to the integration of a superhydrophobic physical barrier provided by the fluorinated shell and a chemical passivation effect induced by oxygen vacancies in the CeO 2 core, which operate synergistically to enhance corrosion resistance. This dual-interface design makes F-CeO 2 an efficient bifunctional filler for durable anticorrosion fluorocarbon coatings. Overall, the approach improves barrier integrity, durability under chloride attack.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）