Nature Communications
·
2025
·Vol. 16
·期 1
·10644
·
IF 15.7
Zhao Shanshan,Zhang Mingjiang,Li Anqi,Tong Zhi,Li Guangen,Guo Qi,Zhou Yajie,Wang Yaxin,Cai Junjie,Zhuang Taotao
Visualization in complex, extreme environments necessitates that the imaging material/system to deliver more comprehensive information and endures external mechanical deformation. Endowing polarization, for example, helicity, in adaptable optical materials—to construct circular-polarization-enabled imaging—offers the chance to address the issue. However, retaining considerable luminescence asymmetry during processing while behaving like an elastic rubber remains challenging, resulting from unstable circularly polarized luminescence when deforming existing polarization materials. Here, we propose a covalent cross-linking strategy, combining a sustainable light generator with an optical helicity modulator, to prepare chiroptical network structures exhibiting superior mechanical-chiroptical coupling. The obtained structures provide satisfying circularly polarized luminescence with an asymmetry factor up to 1.31 alongside exceptional tensile strain tolerance, and more importantly, the asymmetry maintains a magnitude of 10 −1 even with 80% deformation. We further advance our materials into wearable polarization optical sensors, practicing our developed circular polarization differential imaging in a fire scenario, showing an advancement in imaging resolution compared to other technologies such as thermal, intensity and fluorescence imaging. This covalent-bonding chiroptical network structures enable deformable optical helicity, paving a way for achieving portable imaging identification under extreme conditions.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·42585
·
IF 3.9
Wang Xiumei,Zheng Xiaoyan,Chu Leqian,Zhao Xiaoxu,Pang Jie
Conventional non-degradable petroleum-based packaging films cause serious food safety and white environment pollution problems. Thus, a series of novel konjac glucomannan (KGM)/zein (KZ) films with different chain lengths and concentrations of fatty acids were prepared using a solution casting method in this paper. Effects of stearic acid and lauric acid on the rheological properties of the film-forming solutions, structure, mechanical properties and water barrier abilities of KZ film were systematically studied. The apparent viscosities analysis indicated that all the film-forming solutions were typical non-Newtonian pseudoplastic fluids and KGM/Zein/fatty acid (KZ-FA) film solutions exhibited higher apparent viscosities than KZ film solution at the test FA concentration. Fourier transform infrared spectroscopy results confirmed that hydrogen bonds were the main intermolecular interactions among KGM, Zein and fatty acids. Differential scanning calorimetry and X-ray diffraction results demonstrated that the incorporation of fatty acids enhanced the thermal stabilities and crystallinities of KZ film. Scanning electron microscopy and atomic force microscope results revealed that the surface morphologies and roughness of KZ film were significantly affected after adding FAs. The rougher and more irregular surfaces were observed in the KZ films with stearic acid. Moreover, KZ film with 0.4% stearic acid exhibited higher surface hydrophobicity, mechanical, water resistance and water vapor barrier properties than other KGM-based films. These results suggested that KZ films with appropriate types and concentrations of fatty acids are promising food packaging films for the required properties.
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Nature Communications
·
2025
·Vol. 16
·期 1
·10481
·
IF 15.7
Zhao Guangjin,Liu Haohao,Lan Chengyi,Liang Lijun,Dong Liangliang,Meng Hong,Elimelech Menachem
Industry-leading polyamide membranes are thin-film composites produced via interfacial polymerization (IP) at an alkane-water interface. However, the current fabrication method results in suboptimal membrane microstructure and compromised performance due to insufficient control of mass and heat transfer within the interfacial reaction zone. Furthermore, the fabrication process utilizes volatile alkane solvents, contributing to a significant environmental burden. Here, we report an IP strategy at an ionic liquid/water interface to synchronously achieve kinetic and thermodynamic control of the interfacial reaction, thereby optimizing the microstructure of polyamide membranes. The high viscosity and low volatility of the ionic liquid facilitate the integration of the industrial doctor blading technique into the IP process, enabling rapid, eco-friendly, and scalable polyamide membrane production. The resulting membrane exhibits an unprecedented combination of high pure water permeance (25.8 LMH/bar) and excellent salt (sodium sulfate) rejection (96.54%), surpassing the performance of commercial benchmark polyamide membranes. This facile fabrication strategy paves the way for the design and production of next-generation, high-performance thin-film composite membranes.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·1-11
·
IF 3.9
Chen Yuan-Bin,Xiong Siyi
The Na 5 Tm 1 − x (Y 1/3 Yb 2/3 ) x (MoO 4 ) 4 ceramics (x=0-0.18) were successfully synthesized via the solid-state reaction method. XRD analysis revealed that they possessed a single-phase tetragonal scheelite structure belonging to the space group I4₁/a(88). SEM analysis demonstrated that the samples sintered at 600 °C exhibited a dense microstructure, with a relative density as high as 94.9% and an average grain size ranging from 2.172 μm to 2.424 μm. The relative density serves as an external factor influencing ε r and Q×f, while τ f is related to bond valence. The ionicity of the Tm-O bond, and the lattice energy and bond energy of the Mo-O bond are the intrinsic factors determining ε r , Q×f, and τ f , respectively. Raman spectroscopy provided an intuitive characterization of the vibrational properties of the [MoO 4 ] 2− tetrahedra within the ceramics. Although the pure phase Na₅Tm(MoO 4 ) 4 ceramic exhibited optimal dielectric properties (ε r =8.025, Q×f=18,967 GHz, and τ f = -101 ppm/°C) at 625 °C, the Na 5 Tm 0.91 Y 0.03 Yb 0.06 (MoO 4 ) 4 ceramic sintered at 600 °C demonstrated superior dielectric properties (ε r =7.82, Q×f=34,752 GHz, and τ f = -71.9 ppm/°C).
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COLLOID AND POLYMER SCIENCE
·
2025
·
IF 2.3
Tumrani Sadam Hussain,Sharma Bharat Prasad,Otho Ali Raza,Ayob Eman A.,Amin Mohammed A.,Soliman Mohamed Mohamed,Soomro Razium Ali,Karakuş Selcan
The environmental impact of biodegradable microplastics (BMPs) is profoundly influenced by aging-induced surface transformations, yet their interactions with persistent organic pollutants, such as perfluorooctanoic acid (PFOA), remain poorly understood. This work investigates how aging polylactic acid (PLA), a common BMP, in simulated surface water for 80 days alters its physicochemical properties and behavior towards PFOA. Aging triggered oxidative and hydrolytic degradation, leading to pronounced morphological changes, including increased surface roughness, hydrophilicity, and oxygen-to-carbon (O/C) ratio from 0.82 to 1.28. These transformations introduced hydroxyl and carboxyl functional groups, shifting the PFOA adsorption mechanism from physisorption (in fresh PLA) to chemisorption (in aged PLA) via stronger electrostatic interactions and hydrogen bonding. Additionally, kinetic and isotherm analyses revealed a tenfold increase in PFOA monolayer adsorption capacity for aged PLA (PLA-80) compared to pristine PLA. Density functional theory (DFT) calculations corroborated these findings, demonstrating a reduced HOMO–LUMO energy gap upon PFOA adsorption, indicative of enhanced electronic reactivity and charge transfer. Topological analysis further identified multiple hydrogen-bonding sites, confirming the dominance of electrostatic forces in pollutant retention. These results underscore the critical role of aging in amplifying BMPs’ environmental reactivity, emphasizing the urgent need to incorporate aging processes into risk assessments for biodegradable plastics.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Li Jieyang,Zhang Huanlei,Luo Changhao,Cheng Dongbo,Xu Wanping,Lin Meng
Electrochemical conversion of CO 2 into fuels represents an important pathway for addressing the challenges of climate change and energy storage. However, large-scale applications remain hindered by the instability and inefficiency of CO 2 reduction systems, particularly under highly alkaline electrolytes and high current densities. One primary obstacle is the cathodic salt precipitation, which hinders mass transfer and blocks active sites limiting the lifespan of these systems. Here, we present a non-isothermal strategy that leverages a thermal gradient across the membrane electrode assembly to enhance electrochemical performance and suppress salt precipitation. By maintaining a cooler cathode and warmer anode, we exploit the Soret effect to drive cations away from the cathode, mitigating salting-out while boosting anodic activity and cathodic CO 2 solubility. The non-isothermal case has demonstrated over 200 h of stable operation at 100 mA cm −2 under highly alkaline conditions, outperforming conventional isothermal systems. Techno-economic analysis reveals reductions in CO 2 -to-CO production costs, supporting the scalability of this strategy. These findings enable the practical deployment of stable, high-efficiency CO 2 electrolysis systems.
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Food Analytical Methods
·
2025
·
IF 3
Na Guanqiong,Chen Ping,Qian Yanya,Meng Danqun,Liu Zhipeng,Shan Yujuan
Traditional fluorescent immunosensors usually suffer from high background signals in food samples, which significantly reduces their detection sensitivity. In this study, δ-iron oxyhydroxide (δ-FeOOH) nanosheets with anti-bacitracin zinc (BAC) monoclonal antibodies (mAb) were conjugated as fluorescence receptors, while amino-functionalized carbon quantum dots (CQDs) as fluorescence donors for BAC. A novel fluorescence immunoassay was developed that eliminated background noise based on the “turn on” principle. Upon introduction of BAC into the sample, the nano-assembled probe showed an increase in fluorescence recovery, leading to higher fluorescence intensity at elevated BAC concentrations. This strategy exhibited a linear response for BAC concentrations ranging from 5 to 40 ng/mL, with a limit of detection (LOD) of 2.04 ng/mL. Our findings present a promising immunological approach for the sensitive and selective detection of BAC residues in food.
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BMC PLANT BIOLOGY
·
2025
·Vol. 25
·期 1
·1-22
·
IF 4.8
Yang Zelin,Han Xiaoling,Xing Zhixiang,He Fumeng,Qi Tianshuai,Wang Xue,Fu Rao,Du Chong,Feng Xu,Wang Yingnan,Yuan Qiang,Li Fenglan,Lan Wei,Xu Yongqing
As a vicious invasive plant, Cyclachaena xanthiifolia has caused severe ecological disruption and significant reductions in crop yield, necessitating urgent control measures. However, the underlying mechanisms of its allelopathic invasion remain unclear, representing the primary bottleneck in current management strategies. In this study, we used metabolomic and transcriptomic analyses to evaluate the differences in allelopathy and related physiological and biochemical indices among different extract fractions of C.xanthiifolia , and to investigate how the allelopathy of C.xanthiifolia inhibits seed germination and seedling growth by altering metabolic pathways. GC-MS results identified several compounds with allelopathic potential, including fatty acids, terpenes, esters, alkanes, and aldehydes. Among them, n-butanol phase extract (NE) treatment significantly inhibited the germination and water absorption of mustard ( Brassica juncea ) seeds, changed the balance of the endogenous hormones abscisic acid (ABA) and gibberellins (GA) in seeds, destroyed the antioxidant enzyme system, and caused plasma membrane damage. Moreover, transcriptomic and broadly targeted metabolomic analyses showed that NE treatment interfered with primary metabolism, significantly enriched the carotenoid biosynthetic pathway, and led to a significant accumulation of ABA. The quantitative real-time PCR (qRT-PCR) results showed that the expression levels of 7 key genes involved in ABA biosynthesis and metabolic pathways were relatively high. The results showed that C.xanthiifolia may exert its allelopathic effects by disrupting the antioxidant enzyme system and interfering with primary metabolism and hormone signalling, and that the modulation of the ABA signalling pathway appears to play a key role.
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JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
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2014
·Vol. 52
·期 9
·5874-5881
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IF 2.024
Geng Qian,Zhao Xin-Huai
In the present study, influences of nine probiotics and tea polyphenols on the production of acetic, butyric, and lactic acid from simulated colonic fermentation of maize resistant starch (RS) were investigated. RS was fermented by fecal extracts of healthy adults at 12 g L −1 and 37 °C for 18–48 h in the presence and absence of exogenous probiotics and tea polyphenols. The added probiotics increased acetic and butyric acid production by 25–216 %. Eubacterium faecalis , Lactobacillus acidophilus , L. casei , and L. helveticus increased lactic acid production by 7–58 %; however, other probiotics decreased lactic acid production. Tea polyphenols facilitated lactic acid production but inhibited acetic and butyric acid production clearly. More importantly, the added probiotics weakened the inhibitory effects of tea polyphenols on the two acids, enhancing acetic and butyric acid production by 152–641 and 825–1,777 %, respectively. It is concluded that both probiotics and tea polyphenols have different impacts on the production of acetic, butyric and lactic acid during the colonic fermentation of RS. The impacts of other probiotics and food components on the colonic fermentation of RS and other dietary fibers should be investigated in future study to clarify their possible interactions.
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Nature Communications
·
2020
·Vol. 11
·期 1
·1-8
·
IF 12.121
Zhang Zhirong,Feng Chen,Liu Chunxiao,Zuo Ming,Qin Lang,Yan Xupeng,Xing Yulin,Li Hongliang,Si Rui,Zhou Shiming,Zeng Jie
Single-atom catalysts (SACs) exhibit intriguing catalytic performance owing to their maximized atom utilizations and unique electronic structures. However, the reported strategies for synthesizing SACs generally have special requirements for either the anchored metals or the supports. Herein, we report a universal approach of electrochemical deposition that is applicable to a wide range of metals and supports for the fabrication of SACs. The depositions were conducted on both cathode and anode, where the different redox reactions endowed the SACs with distinct electronic states. The SACs from cathodic deposition exhibited high activities towards hydrogen evolution reaction, while those from anodic deposition were highly active towards oxygen evolution reaction. When cathodically- and anodically-deposited Ir single atoms on Co 0.8 Fe 0.2 Se 2 @Ni foam were integrated into a two-electrode cell for overall water splitting, a voltage of 1.39 V was required at 10 mA cm −2 in alkaline electrolyte.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Zhou Yin,Yin Kun,Huang Yingying,Li Jiapei,Zhu Anquan,Lin Dewu,Gan Guoqiang,Zhang Jianfang,Liu Kai,Zhang Tian,Liu Kunlun,Luan Chuhao,Yang Huawei,Chen Hou,Guo Shaojun,Zhang Wenjun,Hong Guo
Charge overpotential for oxygen evolution reaction is a crucial parameter for the energy conversion efficiency of lithium-oxygen (Li-O 2 ) batteries. So far, the realization of low charge overpotential via catalyst design is a grand challenge in this field, which usually exceeds 0.25 V. Herein, we report an orbital reconstruction strategy to significantly decrease the charge overpotential to the low 0.11 V by employing PdCo nanosheet catalyst under a low-loading mass (0.3 mg/cm 2 ) and capacity (0.3 mAh/cm 2 ). Experimental and theoretical calculations demonstrate that the precise d-d orbital coupling ( d xz - d xz , d yz - d yz and d z 2 - d z 2 ) between the low-electronegativity Co and Pd leads to the reconstruction of Pd 4 d orbitals in PdCo nanosheets, thereby resulting in a downward shift of all the three active Pd 4 d orbitals ( d z 2 , d xz and d yz ) relative to that of Pd nanosheets. Furthermore, the highest energy level of the Pd 4 d z 2 orbital in PdCo is lower than the lowest energy levels of the Pd 4 d xz and 4 d yz orbitals in pure Pd, significantly decreasing the charge activation energy and achieving a highest energy conversion efficiency of 91%. This finding provides the orbital-level tuning into rational design of highly efficient electrocatalysts for Li-O 2 batteries.
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JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 4
·1-18
·
IF 2.8
Liu Ziqun,Yu Yunwu,Yuan Yong,Jiang Bin,Liu Changwei,Wang Junhai,Li Ting,Liu Peng,Ma Ying,Fang Yanfeng,Sun Xiaowei
Based on previous studies, we prepared ultrafiltration membranes by cross-linking PEEKWC/PEI using a non-solvent induced phase separation method, this membrane has excellent hydrophilicity. We also incorporated silica (SiO 2 ) into the cross-linked membrane system through distribution blending in this study. The membranes underwent characterization using various methods including SEM, ATR-FTIR, and water contact angle tests. To assess the impact of silica addition on membrane performance, tests were conducted on pure water flux, dye flux, dye retention, salt solution flux, salt-dye mixed solution flux, and retention. The results indicated a noticeable improvement in the hydrophilicity of the membrane following the addition of silica, as evidenced by a reduction in the hydrophilic angle from 22.175° to 6.271°, pure water flux up to 850 LMH at 0.3 MPa. Moreover, the retention performance of the membrane was enhanced, with the Congo red solution reaching a retention rate of 99.9% at 0.3 MPa pressure. Subsequently, a fixed silica ratio was chosen (2wt%), and different ratios of silane coupling agent were added using the distribution blending method to explore their effects on membrane performance. The tests revealed an improvement in the retention performance, the group with the largest change in the Congo Red cut-off rate, with an increase in the Congo Red cut-off from 88.7% to 97.9%.
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