Journal of Hazardous Materials Advances
·
2025
·
IF 7.7
Peigen Chen,Lina Chen,Xing Yang,Tingting Li,Cong Fang
The pervasive contamination by Di(2-ethylhexyl) phthalate (DEHP) and nanoplastics (NPs) poses a significant threat to reproductive health, yet the combined effects of these pollutants on endometrial receptivity remain poorly understood. Our study investigates the impact of chronic DEHP and NPs co-exposure on endometrial ciliary function in mice and explores the potential protective role of dietary inulin. Utilizing a multifaceted approach—including transcriptomic analysis, immunohistochemistry, scanning electron microscopy, and immunofluorescence—we reveal that DEHP and NPs synergistically impair endometrial cilia, crucial for embryo implantation. Remarkably, inulin supplementation restores ciliary structure and function, mitigating the detrimental effects of these pollutants. Our findings suggest that dietary interventions could offer a practical strategy to counteract the reproductive toxicity of environmental contaminants, providing new insights into maintaining reproductive health in polluted environments. This research underscores the urgency of addressing environmental pollutants and highlights the potential of inulin as a protective agent against reproductive toxicity.
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FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Yaping Liu,Chenxin Huang,Jiajie Wang,Xianchao Feng,Meihu Ma
Egg white proteins exhibit high thermal susceptibility to undesired aggregation, which limits their processing utility. In this study, the thermally regulated co-aggregation mechanism between ovotransferrin (OVT) and ovalbumin (OVA) was systematically investigated. Turbidity kinetics and particle size distribution results showed that the initial aggregation occurred at 55°C, induced by 4.3% disulfide cleavage and a 38.9% enrichment of β-sheet ( P < 0.05). Size exclusion chromatography results showed that this structural unfolding was mainly due to OVT molecules. The structurally activated OVT then specifically anchored the double cavities of OVA. Subsequently, upon heating at 60 - 65°C, the β-sheet reverted to the α-helix as detected by CD and FTIR spectroscopy, and the hydrophobic tyrosine and phenylalanine residues were reburied as detected by fluorescence spectroscopy, forming reversible metastable aggregates. At temperatures above 65°C, the larger heteroprotein complex (∼1.5 μm) emerged. ITC results showed that the co-aggregation was entropy-driven ( TΔS = +45.5 kJ/mol) with a stoichiometric ratio of 2:1 (OVT: OVA, n = 2.19 ± 0.12). Molecular docking and interaction force analyses revealed covalent disulfide bonds and multiple non-covalent bonds involved in this process. Notably, OVT acted as the aggregation initiator and governed the reverse aggregation, whereas OVA provided the structural backbone. These results provided a theoretical basis for the precise regulation of complex functional properties in the food industry.
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ENERGY & FUELS
·
2025
·
IF 5.3
Hailin Zheng,Mingjie Liang,Weiwei Cai,Kang Li,Min Zheng
Chemical loop combustion (CLC) is an innovative combustion technology that inherently separates the greenhouse gas CO2 while producing no NOx emissions. In this study, a CuMn2O4 composite oxygen carrier was synthesized using the sol–gel method, and the chemical looping combustion performance of the carrier was examined in a fixed-bed reactor utilizing CO as the reducing medium, along with an assessment of its cyclic reaction stability. The rapid increase in oxygen release from CuMn2O4 between 700 and 900 °C indicates a high reaction rate within this temperature range. Furthermore, the oxygen carrier demonstrates the capacity to release a substantial amount of oxygen consistently, with the release reaching its peak at 900 °C. The oxygen release from CuMn2O4 increases significantly within the temperature range of 700–900 °C. Ten reactions involving CuMn2O4 were conducted at 900 °C in an atmosphere containing 8% CO and 3% O2. The results demonstrated an average CO2 selectivity of 96.44%, a CO conversion rate of 95.98%, and a CO2 yield of 93.70%, effectively achieving near-complete capture of CO2. The results show that CuMn2O4 can significantly improve the CO conversion activity and basically regenerate the oxygen carriers of air oxidation reduction. This study fully proves that it is feasible to achieve CO2 capture by CuMn2O4 for converter gas CO, which is the main byproduct produced by converter smelting.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Hengzhi Zhang,Junyu Yuan,Yulin Liu,Rongzong Zheng,Chunyang Jia
Polyaniline (PANI) is a promising electrochromic (EC) material for adaptive camouflage due to its reversible infrared (IR) emissivity regulation via electrochemical redox processes under electrical stimulation. Nevertheless, structural instability originating from chain conformation degradation during prolonged electrochemical cycling, coupled with restricted polaron delocalization that impedes charge carrier mobility in π-conjugated systems, impose fundamental limitations on IR emissivity regulation, compromising operational durability and emissivity modulation efficiency. Constructing metal ion ligand coordination networks within PANI is a viable strategy for the simultaneous enhancement of optoelectronic performance and structural stability. Capitalizing on this coordination chemistry paradigm, a co-doping strategy combining protonic acid and zinc ion (Zn 2+ ) was developed to fabricate a high-performance PANI-based EC device. The optimized device exhibited an exceptional emissivity modulation amplitude (Δε = 0.65) within 8-14 μm while maintaining 98% emissivity modulation retention after continuous electrochemical switching over 1000 cycles. The results show that co-doping effectively enhances electron delocalization and polaron density in PANI chains. Moreover, the intra- and inter-chain coordination of Zn 2+ with PANI strengthens their interaction, thus improving the IR emissivity modulation range and electrochemical stability.
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Nano Research
·
2021
·Vol. 14
·期 8
·2831-2836
·
IF 8.897
Mou Shiyong,Li Yonghao,Yue Luchao,Liang Jie,Luo Yonglan,Liu Qian,Li Tingshuai,Lu Siyu,Asiri Abdullah M.,Xiong Xiaoli,Ma Dongwei,Sun Xuping
The advancement of cost-effective and selective electrocatalyst towards CO 2 to CO conversion is crucial for renewable energy conversion and storage, thus to achieve carbon-neutral cycle in a sustainable manner. In this communication, we report that Cu 2 Sb decorated Cu nanowire arrays on Cu foil act as a highly active and selective electrocatalyst for CO 2 to CO conversion. In CO 2 -saturated 0.1 M KHCO 3 , it achieves a high Faraday efficiency (FE) of 86.5% for CO, at −0.90 V vs. reversible hydrogen electrode (RHE). The H 2 /CO ratio is tunable from 0.08:1 to 5.9:1 by adjusting the potential. It is worth noting that HCOO − product was totally suppressed on such catalyst, compared with Sb counterpart. The improving selectivity for CO could be attributed to the bimetallic effect and nanowire arrays structure.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·
IF 3.9
Lu Liu,Xiao Li Zhu,Xiang Ming Chen
In the present work, the strategy of multielements co-substitution for BiFeO 3 ceramics was adopted to enhance the ferroelectricity and magnetoelectric coupling effect where the effective radius of rare-earth ions was equivalent to that of Sm 3+ . Differing from the case of Sm-substituted BiFeO 3 ceramics, the symmetry of the present ceramics changed from R3c to Pbnm directly without the formation of Pna 2 1 with increasing RE-substitution content. The ferroelectricity was significantly improved, and the saturated polarization−electric field ( P - E ) hysteresis loop with P r = 37.63 μC/cm 2 was obtained in Bi 0.95 (La 0.20 Nd 0.20 Sm 0.20 Gd 0.20 Lu 0.20 ) 0.05 FeO 3 ceramics. The leakage current was reduced by almost six orders of magnitude in multielements co-substituted BiFeO 3 ceramics, which was much lower than that of BiFeO 3 end-member. Moreover, the magnetoelectric coupling coefficient α ME of 0.96 mV/cm Oe was achieved in Bi 0.86 (La 0.20 Nd 0.20 Sm 0.20 Gd 0.20 Lu 0.20 ) 0.14 FeO 3 ceramics, which was larger than that of Sm-substituted BiFeO 3 ceramics. The strategy of multielements co-substitution might provide a new approach to improving ferroelectricity and magnetoelectric coupling effect in BiFeO 3 ceramics, which could be physically interpreted as the results of the reduced leakage current and increased local polarization configuration caused by the multiple elements substitution.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 20
·24939-24952
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IF 2.478
Guo Xiaoying,Zhang Weifeng,Wu Shan,Sun Chaozhong,Hu Changzheng,Liu Laijun,Fang Liang,Luo Nengneng
In this study, Ba 4 RCo 0.5 Nb 9.5 O 30 (R = La, Nd, Sm, Eu) (BRCN) ceramics were synthesized using a high-temperature solid-state reaction. The XRD refinement results show that ceramic samples are tetragonal tungsten bronze (TTB). As the radius of rare-earth ions decreases, the unit cell volume of BRCN ceramics decreases, and the radius difference between Ba 2+ and R ions increase, which results in BO 6 octahedral distortion and the Raman peaks shift to high frequency. In addition, as the radius of rare-earth ions decreases, the ionic displacements increase and thus the dielectric constant peak temperature goes up. The high-temperature impedance results show that there exists n-type electronic conduction in the samples. The remanent polarization of the P–E curve at low frequencies increases from 0.470 to 1.038 μC cm −2 as the rare-earth ion radius decreases.
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ACS Omega
·
2019
·
IF 2.584
Bo Lin,Aiyong Wang,Yanglong Guo,Yuanqing Ding,Yun Guo,Li Wang,Wangcheng Zhan,Feng Gao
Co-, Ni-, and Zn-containing MOFs are prepared and then pyrolyzed to generate materials for ambient temperature NO adsorption. Materials containing Co are much more efficient for NO adsorption than those containing Ni and Zn; therefore, Co is identified as the active phase. The best performing material studied here achieves 100% low concentration (10 ppm) NO adsorption for more than 15 h under a weight hourly space velocity of 120 000 mL g–1 h–1. Powder X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared, and Raman spectroscopies, along with scanning electron microscopy and TEM, are used to probe the physicochemical properties of the materials, particularly the Co active phase, and chemistries involved in NO adsorption–desorption. NO adsorbs on oxygen-covered Co nanoparticle surfaces in the form of nitrates and desorbs as NO at higher temperatures as a result of surface nitrate decomposition. NO storage capacity decreases gradually upon repeated NO adsorption–desorption cycles, likely because of Co3O4 formation during these processes.
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PubMed
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ENERGY & FUELS
·
2022
·
IF 4.654
Weijun Zhang,Fen Li,Zhinan Fu,Sheng Dai,Fenghongkang Pan,Jinxia Li,Lihui Zhou
The appearance of mixed-metal MOF materials with abundant metal active sites, high porosity, large surface area, and, particularly, the synergistic effect between different metals which show prominent catalytic activity for oxygen evolution reaction (OER) has motivated profound research. Most of the related reports focus on the hydrothermal methods to prepare the mixed-metal MOFs containing metal ions such as Co, Ni, and Cr, etc. In this work, we proposed a facile impregnation method through an ion-exchange process to fabricate Fe-doped Co-BDC nanosheets (Fe@Co-BDC NSs) that represented significant enhancement for electrocatalytic OER. The tuning mechanism of the ion-exchange method was investigated by the morphology change and electronic structure of Fe@Co-BDC NSs, which should be important for an efficient OER catalyst. The optimized Fe@Co-BDC NSs (5 mM, 60 min) exhibited a significantly lower overpotential of 307 mV with a smaller Tafel slope of 34.1 mV·dec–1, as compared with the pure Co-BDC NSs.
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Catalysts
·
2019
·Vol. 9
·期 3
·256
·
IF 3.444
Feng Zhao,Shuangde Li,Xiaofeng Wu,Renliang Yue,Weiman Li,Xicuo Zha,Yuzhou Deng,Yunfa Chen
CuO-CeO2nanocatalysts with varying CuO contents (1, 5, 9, 14 and 17 wt %) were prepared by one-step flame spray pyrolysis (FSP) and applied to CO oxidation. The influences of CuO content on the as-prepared catalysts were systematically characterized by X-ray diffraction (XRD), N2adsorption-desorption at −196 °C, field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and hydrogen-temperature programmed reduction (H2-TPR). A superior CO oxidation activity was observed for the 14 wt % CuO-CeO2catalyst, with 90% CO conversion at 98 °C at space velocity (60,000 mL × g−1× h−1), which was attributed to abundant surface defects (lattice distortion, Ce3+, and oxygen vacancies) and high reducibility supported by strong synergistic interaction. In addition, the catalyst also displayed excellent stability and resistance to water vapor. Significantly, in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) showed that in the CO catalytic oxidation process, the strong synergistic interaction led readily to dehydroxylation and CO adsorption on Cu+at low temperature. Furthermore, in the feed of water vapor, although there was an adverse effect on the access of CO adsorption, there was also a positive effect on the formation of fewer carbon intermediates. All these results showed the potential of highly active and water vapor-resistive CuO-CeO2catalysts prepared by FSP.Keywords:flame spray pyrolysis;synergistic interaction;CO oxidation;CuO-CeO2nanocatalyst;water resistance;carbon intermediate
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Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 31
·15774-15781
·
IF 11.301
Xiangjian Meng,Weiliang Qi,Wandi Kuang,Samira Adimi,Haichuan Guo,Tiju Thomas,Siqi Liu,Zhenping Wang,Minghui Yang
Transition metal nitrides (TMNs) are emerging as a feasible alternative to noble metal co-catalysts in photocatalytic hydrogen production. Considering the recent prospects created by multicomponent systems, it is reasonable to investigate multi-component TMNs for photocatalytic hydrogen production. Herein, in an effort in that direction, ternary chromium-titanium nitride (Cr0.5Ti0.5N) nanoparticles have been synthesized by a solid–solid phase separation method, resulting in highly efficient co-catalysts for promoting photocatalytic hydrogen production of semiconductors under visible light irradiation. Both experimental results and density functional theory (DFT) calculations demonstrate that ternary Cr0.5Ti0.5N offers a comprehensive advantage by boosting the photo-induced charge carrier separation and migration, improving the reaction kinetics as compared to those of TiN and CrN. Therefore, the optimal Cr0.5Ti0.5N-based sample exhibits the highest photocatalytic hydrogen evolution rate of 2.44 mmol g−1 h−1, and has ∼120 times better kinetics than the reference pure CdS sample. In fact, this result even surpasses that of Pt-based nanocomposites (2.06 mmol g−1 h−1).
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BIO-MEDICAL MATERIALS AND ENGINEERING
·
2015
·
IF 1.091
Wang Xiaotong,Ma Bing,Chang Jiang
BACKGROUND: Vascular extracellular matrices (vECMs) have shown potential for small-diameter blood vessel tissue engineering applications. However, problems such as chemical instability and easy calcification are still remained. Chemical crosslinking using crosslinkers such as glutaraldehyde (GA) can improve mechanical properties and proteolysis resistance of vECMs, but leads to calcification and cytotoxicity. Procyanidins (PC) can crosslink ECMs with anti-calcification property and cytocompatibility, but the mechanical properties and chemical stability are unsatisfactory. OBJECTIVE: A novel co-crosslinking technique using PC and GA was developed, which combines the advantages of both PC and GA for enhancing mechanical properties and stability of vECMs with reduced calcification and cytotoxicity. METHODS: Fresh carotid were decellularized and then crosslinked by PC and subsequent GA for 6 h respectively. The mechanical properties, dynamic release of PC, enzymatic degradation, calcification and cytotoxicity of crosslinked samples were evaluated. RESULTS: The co-crosslinked vECMs showed enhanced tensile strength, chemical and biological stability, comparable anti-calcification property as compared to pure PC-crosslinked samples. Cytotoxicity assay showed that the co-crosslinked vECMs were cytocompatible for supporting the adhesion and proliferation of HUVECs. CONCLUSIONS: Co-crosslinking with PC and GA might be a useful method for preparation of vECM scaffolds with potential applications in small-diameter blood vessel tissue engineering.
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