CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·Vol. 43
·期 12
·2325-2334
·
IF 4
Olenich Ekaterina A.,Gorodov Vadim V.,Demchenko Nina V.,Andropova Ulyana S.,Bakanov Kirill K.,Krupnin Artur E.,Kuchkina Irina O.,Kostrov Sergei A.,Milenin Sergey A.,Chvalun Sergey N.,Zou Jun,Kramarenko Elena Yu.
The aim of this study is to develop magnetopolymer composites suitable for fabricating soft magnetoactive robots via extrusion-based 3D printing. Polysiloxane copolymers with urea fragments were synthesized and characterized, and their thermophysical and rheological properties were investigated. This study provides an assessment of the potential for their further use in additive manufacturing. The obtained materials were utilized as matrices for creating magnetically active polymer composites by incorporating microparticles of carbonyl iron. Samples of complex geometries were printed using both neat and filled filaments, demonstrating the feasibility of employing these materials in extrusion-based 3D printing.
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Nature Communications
·
2025
·Vol. 16
·期 1
·10341
·
IF 15.7
Gao Chongwei,Chen Ming,Li Jiantao,Lee Sungsik,Sun Tian,Wang Xunan,Zhang Shuhua,Feng Guang,Zhai Dengyun,Kang Feiyu
The simultaneous achievement of fast-charging and high specific capacity remains a critical challenge for lithium-ion battery negative electrodes. Here we report a layered manganese-based Prussian blue analogue, synthesized through vacancy control and subsequent thermal transformation. As a conversion-type negative electrode, this material exhibits high-rate performance, delivering a specific capacity of 510 mAh g −1 at a specific current of 8 A g −1 , and operates at a moderate average voltage of approximately 1.2 V vs. Li/Li + , which mitigates lithium plating risks. This high-rate capability stems from the analogue’s specific linkage configurations, which facilitate a high content of active transition metal and strong Li + adsorption at nitrogen sites. The high transition metal content enables a high reversible capacity, while strong Li + adsorption promotes an efficient initial crystalline-to-amorphous transformation. This process induces dynamically reversible component migration during subsequent cycling, thereby enhancing conversion reaction kinetics. Our findings provide insights into the application of Prussian blue analogues as fast-charging negative electrode materials.
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Nature Communications
·
2025
·
IF 15.7
Yang Sinian,Zhao Shunshun,Xu Haojie,Wang Xinwei,Huang Xuanrui,Yang Qi,Chen Yong,Wang Guoxiu,Chen Shimou
Aqueous zinc-ion batteries have emerged as a promising system for safe and sustainable energy storage. However, their practical application is hindered by detrimental interfacial side reactions and inadequate low-temperature performance. Herein, we report the design of a gradient chaotropic ionic liquid (IL)-based aqueous electrolyte (Emim⁺-TFA⁻/OTf⁻-Zn 2+ -H 2 O), which can simultaneously fulfil the conflicting demands of dendrite-free zinc deposition and low-temperature operation. By forming an antifreeze electrolyte with a hydrophobic yet salt-philic interface, the proposed formulation overcomes the limitations of conventional IL-based systems that rely on H 2 O-lean compositions, complex additives, or elaborate solvent mixtures. Thus, the assembled zinc-ion cells exhibit improved zinc plating/stripping stability. At a current density of 0.1 mA cm −2 and 0.1 mAh cm −2 , the Zn | |Zn symmetric cells endure prolonged zinc plating/stripping, exceeding 13,000 h at −30 °C and 6690 h at −40 °C. In full cells, Zn | |VO 2 @VO maintains nearly 100% capacity retention over 3500 cycles at 0.2 A g −1 and −40 °C. This gradient chaotropic Zn 2+ electrolyte design provides a versatile platform for effective antifreeze Zn 2+ solvation chemistry and accelerated interfacial ion transport, enabling high-performance zinc batteries in subzero environments.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·
IF 12.6
Huang Xiaobin,Yi Yakun,Zhou Ke,Liu Lei,Wu Hai-Chen
MicroRNAs (miRNAs) play crucial roles in the pathogenesis of diverse diseases; however, their extremely low abundance in complex biological systems makes highly sensitive and specific multiplexed detection particularly challenging. Here, we report an enzyme-assisted nanopore sensor that enables simultaneous and ultrasensitive detection of multiple miRNAs. Capture DNA (cDNA) immobilized on streptavidin-coated magnetic beads specifically hybridizes with target miRNAs, opening the cDNA hairpin and facilitating the binding of alkaline phosphatase (ALP)-labeled detection DNA to form stable complexes. ALP catalyzes the dephosphorylation of designed phosphorylated peptide probes, inducing conformational and charge changes that yield distinct current blockade signatures in the presence of cucurbit [ 7 ]uril within the nanopore. This strategy reduces background interference via magnetic separation and amplifies detection signals through enzymatic reactions, thereby markedly improving sensitivity for low-abundance miRNAs. The sensor achieves a broad dynamic range from 10.0 fM to 10.0 nM across three target miRNAs, with femtomolar-level limits of detection. By integrating molecular separation, enzymatic amplification, and nanopore sensing, this platform provides a robust approach for precise miRNA analysis, offering strong potential for early disease diagnosis.
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JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 12
·452
·
IF 2.8
Xiao Shujuan,Li Hao,Lu Xiaohui,Yu Shouwu
Emulsified oil has dynamic stability, and its harmless treatment has become a challenging problem worldwide. Membrane filtration technology has garnered significant attention in the field of oil-water separation due to its low cost, high efficiency, and environmental friendliness. In this study, NH 2 -CAU-1 was incorporated into a polyphenylsulfone (PPSU) matrix to fabricate superhydrophilic and antifouling mixed matrix membranes (MMMs) via the phase inversion method, which were subsequently used for the separation of several oil-in-water emulsions. By adjusting the NH 2 -CAU-1 loading capacity, the mechanical properties, wettability, separation performance, and antifouling properties of the MMMs were optimized. The results indicated that when the NH 2 -CAU-1 loading is 0.1 wt%, the MMMs exhibited superhydrophilicity (water contact angle is 4.2°) and underwater superoleophobicity (underwater oil contact angle is 153.4°), achieving a separation efficiency of over 99.55% for various oil-in-water emulsions, with an irreversible fouling rate of only 2.66%.
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Frontiers of Chemical Science and Engineering
·
2020
·Vol. 15
·期 2
·340-350
·
IF 3.552
Zhang Wei,Xu Boren,Gong Caihong,Yi Chunwang,Zhang Shen
In this study, a facile and environmentally friendly method with low energy consumption for preparing nanoscale AgCl and BaSO 4 co-precipitates (AgCl@BaSO 4 co-precipitates) was developed based on the metathetical reaction. Then, the dried co-precipitates were melt-compounded with polyamide 6 (PA6) resins at a specified mass ratio in a twin-screw extruder. The results demonstrated that in the absence of any coating agent or carrier, the nanoparticles of AgCl@BaSO 4 co-precipitates were homogeneously dispersed in the PA6 matrix. Further analysis showed that after the addition of AgCl@BaSO 4 co-precipitates, the antibacterial performance, along with the flame-retardance and anti-dripping characteristics of PA6, was enhanced significantly. In addition, the PA6 composites possessed high spinnability in producing preoriented yarn.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 25
·19910-19922
·
IF 2.779
Zhang Hao,Hao Xiaoliang,Xu Yuanyuan,Wang Shaoyan,Dai Shujuan,Xu Wanqing
In this study, the soybean pod was treated to prepare a kind of fluorescent carbon dots material. This material exhibits excellent photostability, time stability, and salt concentration stability. The fluorescence of carbon dots could be quenched by copper ions and recovered by ethylene diamine tetraacetic acid. BV2 cell imaging demonstrated that carbon dots particles were free to enter the cell’s interior and were not only less toxic but also smaller in size. We have successfully realized the monitoring of copper ion in real water samples and the analysis of ethylene diamine tetraacetic acid in two medicines.
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Electrocatalysis
·
2022
·Vol. 14
·期 2
·247-258
·
IF 2.933
Zhao Zhipeng,Liu Yinmeng,Yi Wenjing,Wang Haiyang,Liu Zhongyi,Yang Jing-he,Zhang Meng
Binder-free nickel–cobalt phosphate (NiCoPO) micro flakes are evenly grown on the nickel foam (NF) by a simple hydrothermal method, which can act as a highly efficient bifunctional electrocatalyst (NiCoPO/NF) for both oxygen evolution reaction (OER) and urea oxidation reaction (UOR). NiCoPO/NF presents the relatively prominent OER and UOR activities with ultralow potentials of 1.51 V and 1.34 V (vs. reversible hydrogen electrode) to reach the current density of 100 mA cm −2 , respectively. The outstanding UOR and OER performance of NiCoPO/NF might be attributed to the fact that the successful incorporation of oxygen atoms into Ni/Co phosphate is beneficial for the oxidation of metal atoms at high overpotential. In addition, NF can improve the electrical conductivity to accelerate the electron transfer from the electrode to the catalyst. Additionally, in the alkaline solution (1 M KOH), NiCoPO/NF shows excellent durability and stability after the consecutive OER and UOR tests for 48 h. The design of NiCoPO/NF would pave the way to construct more efficient bifunctional electrodes for electrocatalytic water splitting with or without urea in alkaline solution, which provides a novel technological platform for the conversion of human waste into the sustainable energy. Graphical Abstract
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2018
·Vol. 315
·期 2
·119-126
·
IF 1.181
Tan Juan,Wang Yanfei,Liu Na,Liu Mouwu
The adsorption of uranium (VI) using tetraphenylimidodiphosphinate (Htpip) was studied. Factors of affecting sorption efficiency have been investigated and results showed the adsorption of uranium (VI) was equilibrium at pH 4.5, time 20 min, adsorbent dosage 0.005 g and initial concentration 50 mg L −1 reaching 99.86 mg g −1 of adsorption capacity and 99.86% of removal efficiency. Additionally, the interfering ions studies showed that the adsorbent possessed excellent adsorption selectivity of uranium (VI). The surface morphology of Htpip was investigated by SEM. The adsorption process of uranium (VI) onto Htpip fit the pseudo-second-order kinetic model and the Freundlich isotherm model very well.
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Scientific Reports
·
2022
·Vol. 12
·期 1
·1-11
·
IF 4.996
Yang Jie,Suo Xidong,Zhao Jingjing,Wang Jing,Zhou Runye,Zhang Yu,Zhang Yifei,Qiao Hongtao,Luo Xiaohang
To date, various solar driven evaporation technologies have been developed for treatment of seawater and wastewater but with the threat from salt polluted and single treatment of seawater. Herein, we develop a multifunctional evaporator constructed by carbon fiber coated by quinoa cellulose nanosheet (CFQC) with outstanding self-cleaning performance and good purification property for treatment of organic and antibiotic polluted water. The resulting Zn-CFQC exhibits good light to thermal performance which can absorb about 86.95% lights in the range of UV–Vis–NIR (200–2500 nm); therefore, the wet and dry surface temperatures of Zn-CFQC are held at 62.1 and 124.3 °C respectively, and keep a speed of 3.2 kg m −2 h −1 for water evaporating under 1000 W m −2 illumination. Such good light-to-thermal capabilities can be mainly imputed to the unique surface microstructures of the carbon fiber which decorated by two-dimension cellulose and activated by ZnCl 2 . Additionally, Zn-CFQC shows good salt automatic-cleaning capability at night and corresponding mechanism has been simply elucidated according to the chemical potential theory. The method of treatment of carbon fiber opens a new way for commercial carbon fiber utilization of solar assisted water purification.
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Science China-Chemistry
·
2020
·Vol. 63
·期 12
·1727-1733
·
IF 6.356
Ren Xinyi,Liu Song,Li Huicong,Ding Jie,Liu Linghui,Kuang Zhichong,Li Ling,Yang Hongbin,Bai Fuquan,Huang Yanqiang,Zhang Tao,Liu Bin
Electrochemical carbon dioxide reduction reaction (CO 2 RR) powered by renewable electricity offers an attractive approach to reduce carbon emission and at the same time produce valuable chemicals/fuels. To design efficient CO 2 reduction electrocatalyst, it is important to understand the structure-activity relationship. Herein, we design a series of single Co atoms electrocatalysts with well-defined active sites electronic structures, which exhibit outstanding CO 2 RR activity with controllable selectivity to CO. Experimental and density functional theory (DFT) calculation studies show that introducing nitro (amino) ligand next to single Co atom catalytic center with electron-withdrawing (electron-donating) capability favors (hinders) CO 2 reduction catalysis. This work provides an in-depth understanding of how functional ligand affects the splitting of transition metal 3d electron orbital, thereby changing the electron transfer from transition metal active site to CO 2 , which is closely related to the Gibbs free energy of the rate-determining step (CO 2 +e − +*→*CO 2 − ).
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2014
·Vol. 41
·期 10
·7695-7702
·
IF 1.54
Jin Qingdong,Li Fubo,Li Ying,Jin Fei,Jiang Lin
A series of α-alkoxyimino-[1-(4-methylpiperazino-1-yl)carbonylmethyl-1 H -benzimidazol-2-yl] acetonitriles were synthesized from o -phenylenediamine, ethyl cyanoacetate, chloroacetyl piperazine, and haloalkane/benzyl chloride by multi-step reactions. The structures of the target compounds were elucidated by IR, 1 H NMR, MS, and elemental analysis. All the target compounds were tested for in vitro antifungal activities against Sclerotinia sclerotiorum and Botrytis cinerea by the mycelium growth rate method, and the results indicated that some compounds displayed higher antifungal activity as compared to carbendazim.
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