FIBERS AND POLYMERS
·
2025
·
IF 2.3
Zhang Shuo,Guo Mengyao,Wu Jiaqing,Wang Ying,Zhang Xin
A novel spinning method that integrates electrospun nanofiber strips into yarn structures has been developed to produce multifunctional yarns. The resulting yarn exhibited a core-sheath structure, with a core composed of tannic acid-modified magnesium hydroxide/thermoplastic polyurethane (TA@MH/TPU) nanofiber strip, sheathed by either pure cotton or cotton/sodium alginate blended fibers. The TA modification improved the dispersion of MH within the TPU matrix, leading to enhanced membrane strength compared to unmodified MH/TPU at equal loadings. The film containing 7% TA@MH/TPU demonstrated optimal mechanical properties (breaking strength of 1.43 MPa, elongation of 122.93%), flame retardancy (limiting oxygen index of 27.1%), and antibacterial efficacy killing ratios of 80.87% against E. coli and 85.07% against S. aureus . Yarns fabricated with this film, the TA@MH/TPU-cotton (CMSCY) retained the antibacterial functionality (67.48% against E. coli and 79.05% against S. aureus ), and the TA@MH/TPU-cotton/sodium alginate (C/SAMSCY) achieved the flame retardancy with a limiting oxygen index of 27.8%. Notably, the CMSCY yarn showed a high tensile strength of 1.53 MPa, which was 15 times that of the TA@MH/TPU nanofiber film, addressing the application limitations of nanofiber membranes caused by their low mechanical strength. Given that electrospun membranes can be readily functionalized, this spinning method offers a promising strategy for producing composite yarns, particularly for developing multifunctional textile fabrics.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Tongzhou Li,Xiao Lin,Hongjie Zhang,Feng Xie,Wen-Feng Lin,Zhigang Shao
Direct seawater electrolysis (DSE) is extremely promising for green hydrogen production as it avoids using scarce freshwater resources, but it faces inherent challenges including slow hydrogen evolution reaction (HER) kinetics at the cathode, active-site blockage by insoluble Mg 2 + /Ca 2+ hydroxides precipitation and chloride corrosion. Herein, we report a high performance HER electrode based on Pt@Co(OH) 2 nanoarrays supported on Nickel foam for DSE, where the dual-catalytic sites on Pt and Co adsorbed *H and *OH, respectively, efficiently promoting water dissociation. The electronic interaction between Pt and Co facilitated the desorption of *H and inhibited the adsorption of Cl - on the electrode. Moreover, positively charged Pt@Co(OH) 2 nanoarrays significantly suppressed Mg 2+ /Ca 2+ migration to the electrode surface, and the ordered pore structure enabled efficient bubble-induced removal of possible precipitation. A pH-asymmetric electrolyzer was assembled with the cathode that achieved a benchmark current density of 100 mA cm −2 with a low voltage of 1.675 V at 80 ℃, and it operated continuously for 1000 h at 100, 200, 500, 800 and 1000 mA cm −2 without significant degradation. This work provides a synergistic strategy to simultaneously overcome the persistent challenges of reactivity and stability of the cathode in DSE, enabling sustainable industrial-scale green hydrogen production.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Mengjiao Zhu,Jing Kong,Qing Li,Xinxin Liu,Jing Zhang,Tao Liu,Liqun Ren,Jing Zheng,Zhenyu Chu,Wanqin Jin
Aspiration pneumonia (AP), caused by the microinhalation of gastric contents, is easy to miss because of its nonspecific symptoms and is associated with a high mortality rate (46.1%) over a short disease course. Current diagnostic methods for aspiration pneumonia, including medical imaging and bronchoscopy, are difficult to use for onsite and rapid diagnosis because they require bulky and time-consuming equipment. In this work, we propose an ultrasensitive electrochemical immunosensor to achieve fast determination of the AP biomarker (pepsin) in the bronchoalveolar lavage fluid (BALF) of AP patients. This immunosensor works through the construction of heterogeneous Ag@Co(OH)2 NWs to simultaneously provide both high electrocatalysis and high conductivity. In terms of architecture, Ag NWs can contribute abundant active sites for antibody immobilization to achieve target capture ability while accelerating electron transfer. In addition, the uniformly distributed Co(OH)2 nanoparticles intensify the response signal because of their high redox capacity. Through the above synergetic effects, our immunosensor enables the recognition and reporting of trace amounts of pepsin in patients’ BALF within only 20 min, which is at least two times faster than that of clinical techniques. Moreover, the high diagnostic accuracy of the immunosensor is comparable to that of CT images from clinical AP patients. This facile immunosensor is promising for providing new insights into the early diagnosis of AP to guide clinical treatment onsite.
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Yi Ming Jun
β-CD to Fe-Al oxyhydroxide e − transfer induces positive ESP shift, forming e − -deficient cavity. • Activated β-CD cavity enhances TC affinity, supported by experiments and simplified DFT. • Composite achieves 152 mg/g capacity and good reusability and selectivity. • Cooperative enrichment-stabilization: β-CD recognition & Fe coordination. The development of high-performance adsorbents is often constrained by an inherent trade-off between rapid sequestration kinetics and strong binding capacity. To address this bottleneck, we rationally design a β-cyclodextrin-modified mixed-valent iron (Fe 2+ /Fe 3+ ) ‑aluminum hydroxide hybrid composite (CD-FeAl-HC) for efficient tetracycline (TC) removal. A unique cooperative enrichment-stabilization mechanism is realized in this structured composite: interfacial activated β-CD acts as a molecular recognition unit that rapidly pre-concentrates TC from bulk solution, while the adjacent mixed-valent Fe 2+ /Fe 3+ sites provide strong coordination binding for stable immobilization. DFT calculations further reveal that interfacial electron transfer from β-CD to FeAl-HC induces a distinct positive shift in the electrostatic potential of the β-CD cavity, converting it from an inert pocket into an electron-deficient molecular trap. Benefiting from this synergistic effect, CD-FeAl-HC delivers a competitive maximum adsorption capacity (151.99 mg/g), remarkably fast adsorption kinetics, and excellent anti-interference performance against coexisting ions and natural organic matter. Notably, the composite achieves over 90% removal efficiency for both TC and ofloxacin in mixed solution, while maintaining >90% TC removal in real water matrices (reservoir and landscape water). Furthermore, it retains more than 90% of removal efficiency after 10 consecutive adsorption-desorption cycles, demonstrating outstanding reusability. This work establishes a generalizable design strategy that integrates molecular enrichment and surface stabilization within a single hybrid material, providing a promising framework for the rational construction of high-performance adsorbents toward emerging organic pollutant remediation. Download: Download high-res image (160KB) Download: Download full-size image
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NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 40
·19161-19167
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IF 3.925
Peng Miao,Weixing Chen,Kailei Li,Weifeng Zhao,Jie Kong
Design of microwave absorbents with hierarchical interfacial structures has become an effective method to scatter microwaves. Metal/carbon composites derived from metal–organic frameworks (MOFs) have attracted considerable attention due to their tunable chemical composition and microstructure. We describe the facile synthesis of a Co/CoO/FeO/C nanocomplex employing Co(OH)2 on NH2-MIL-88B as the “sacrificial template” through one-step pyrolysis. The as-prepared flaky-like Co/CoO/FeO/C nanocomplex showed an effective absorption width of 4.7 GHz at 1.86 mm and a minimum reflection loss of −45.5 dB at 2.01 mm. Our study can aid design of a microstructural strategy for preparing high-performance microwave absorbents.
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JOURNAL OF FISH DISEASES
·
2022
·Vol. 46
·期 3
·215-227
·
IF 2.58
Ziqing Zhong,Xiping Wu,Mindong Bai,Xiaodian Huang,Qilin Zheng,Chunxiang Ai
Cryptocaryon irritans causes one of the most serious diseases in various wild and cultured marine fish, leading to mass mortality and economic loss. In this study, hydroxyl radical (•OH) solution produced by strong ionization discharge combined with water jet cavitation effect was injected into orange-spotted grouper ( Epinephelus coioides ) aquaculture tanks for C. irritans control. The results showed that all C. irritans theronts were inactivated by •OH solution at concentrations of 0.5 mg/L within 2 min. •OH could induce alteration of shape, the absence of motility and macronucleus dispersion in theronts. A possible explanation was that the macronucleus of C. irritans might be damaged by •OH; as a result, its metabolism and life activities were disturbed. The •OH treatment increased the survival rate of E. coioides challenged with C. irritans from 64.7 ± 8.0% (mean ± SD) to 100% and reduced their infection intensity significantly. Stress response biomarkers such as malonaldehyde, glutathione, glutathione peroxidase, superoxide dismutase (SOD) and catalase levels in the gills of E. coioides at different time points were analysed. The SOD activity in the •OH group first decreased and then recovered to the initial level at the end of the experiment. The other stress response biomarkers had no significant difference from that in the uninfected control group after •OH treatment. Additionally, the gill of E. coioides in the •OH group exhibited slight and reversible transformation compared with the uninfected control group. Compared with •OH treatment, chlorine dioxide and formalin treatment reduced the survival rate, induced oxidative damage and changed the histological gill structure in E. coioides . In conclusion, •OH could be applied effectively to control C. irritans infection without affecting the normal physiological condition of E. coioides .
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Yingcong Wei,Wenying Zha,Lele Wang,Xiongfeng Ma,Shaohui Zhang,Rongjian Sa,Huaxiang Lin,Zhengxin Ding,Jinlin Long,Xianzhi Fu,Rusheng Yuan
Tailoring the surficial chemical environment of two-dimensional materials by organic modification is an effective way to optimize their catalytic behaviors. Herein, we present a dynamic coordination approach to improve the photocatalytic performance of ultrathin Co 2 CO 3 (OH) 2 nanosheets (u-CoCH) in NIR light (λ > 780 nm) driven carbonylation reaction by using the reacting substrates (diamines) as the ligands. The coordination of diamines with surface Co 2+ ions form a binuclear complex at the crystallographic planes of u-CoCH. The as-formed complexes can reduce the energy barrier of carbonylation reaction by weaking the N-H bond of the substrate on u-CoCH, and afford enhanced light response as well as the prolonged photogenerated electron lifetime. Together with the successful synthesis of a series of important structural motifs in pharmaceuticals and bioactive agents, the promoted photosynthesis reaction mode via in-situ formed surface complexes offers a model toward full-spectrum-solar-energy conversion in the field of chemical synthesis.
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ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Muhammad Waqas,Chengzhou Liu,Qiulan Huang,Xiaoxia Zhang,Youjun Fan,Zhe Jiang,Xiaoqu Wang,Wei Chen
Precise control over the structure and morphology of nano/microarchitectures is the topic of immense interest to tune their physical features and chemical aspects for desired applications. In this work, a novel and effective Ni(OH) 2 three-dimensional nanosheet-coated marigold-like ZnO microflower (mg-ZnO@Ni(OH) 2 NSs) hybrid is designed for the nonenzymatic electrochemical determination of glucose. The morphological evolution of mg-ZnO and mg-ZnO@Ni(OH) 2 NSs was achieved by a one-pot solvothermal strategy through control over the reaction conditions without any assistance of an external shape-controlling surfactant. Furthermore, the as-fabricated mg-ZnO and mg-ZnO@Ni(OH) 2 NSs were systematically evaluated by different spectroscopic, microscopic and electrochemical characterization tools. The results indicate that highly exposed homogeneous nanocorners of mg-ZnO and the synergetic effect of Ni(OH) 2 coating, collectively improve the electrocatalytic efficiency of the designed catalyst. The mg-ZnO@Ni(OH) 2 NS-based sensing electrode exhibits excellent amperometric performance for glucose monitoring, comprising satisfactory sensitivity (259.78 and 62.82 μA mM −1 cm −2 ), wide linear range (0.084–0.941 mM and 0.941–6.50 mM), low limit of detection (0.06 µM, S / N = 3), good stability and high detection selectivity. Moreover, the designed sensor is promising for the potential application in the real-time glucose detection of human serum samples.
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JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Yingqing Zhao,Rui Liu,Christian Marcus Pedersen,Zhenzhou Zhang,Zhaohui Guo,Honghong Chang,Yingxiong Wang,Yan Qiao
Lactic acid (2-hydroxypropionic acid, LA) can be produced from abundant and renewable biomass resources via chemocatalytic processes, which exhibited high potential for meeting its tremendous demand in a wide range of applications. The basic Ba(OH) 2 could efficiently catalyze the conversion of d -glucose into LA. In the present study, by utilizing various NMR techniques including, chemical shift titration, 2D diffusion ordered spectroscopy (DOSY) analysis, heteronuclear singular quantum correlation ( 1 H– 13 C HSQC), the binding sites and catalytic interaction between d -glucose and catalyst were clarified. The experimental results by NMR and electrospray ionization mass spectrometry (ESI–MS) were used to explore the reaction mechanism. Experimental results disclosed that the catalyst, Ba(OH) 2 , may exist in the form of [Ba(OH)(H 2 O) 2 ] + under the reaction condition. The OH – of [Ba(OH)(H 2 O) 2 ] + is attached to the C5-O of d -glucose, and Ba 2+ is connected to the C1-O of d -glucose. Herein, we suppose that Ba(OH) 2 and d -glucose interact and form a complex, d -glucopyranose-[Ba(OH)(D 2 O) 2 ] + . Furthermore, when the reaction was performed in D 2 O, we were surprised to find that LA underwent varying degrees of deuteration. The reaction mechanism, binding sites and deuteration of the product have shed light on the efficient conversion of biomass to LA.
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 38
·20453-20463
·
IF 14.511
Xiaofeng Li,Xupo Liu,Cuicui Zhang,Ran Wang,Gangya Wei,Tianfang Yang,Jing Zhang,Ye Chen,Shuyan Gao
Developing cost-effective and durable hydrogen evolution reaction (HER) catalysts is imperative for electrochemical water splitting. Herein, a facile corrosion-etching strategy has been applied to synthesize RuO2 coupled with defective NiFeZn(OH)x on NiFe foam (NFF) at room temperature, achieving a D/NFF-Ru-Zn electrocatalyst with abundant structural defects. Benefiting from the abundant exposed defective sites and the synergistic effect between defective NiFeZn(OH)x and RuO2, D/NFF-Ru-Zn efficiently improves the poor intrinsic conductivity of NiFe hydroxide and reduces the kinetic energy barrier of the Volmer step, thus accelerating the HER kinetics. The prepared D/NFF-Ru-Zn catalyst demonstrates excellent activity with an overpotential of 90 mV at 100 mA cm−2, as well as prominent durability of operating at 100 mA cm−2 for 100 h. Furthermore, integrated with a NiFe-OH electrode, the assembled water splitting device displays a low voltage of 1.67 V at 500 mA cm−2. Remarkably, the corrosion-etching strategy employed in this work can be extended to other substrates (e.g., Ni foam and Fe foam), providing a potential perspective for designing efficient HER electrocatalysts.
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CHEMICAL GEOLOGY
·
2021
·
IF 4.015
Fuwei Sun,Haibo Liu,Ziyang Chu,Peixun Zhai,Tianhu Chen,Hanlin Wang,Xuehua Zou,Dong Chen
To investigate the effect of isomorphic substitution on siderite activation of hydrogen peroxide, different X-substituted siderite (X = Mn, Co, Ca, and Mg) was artificially synthesized and utilized to activate hydrogen peroxide (H 2 O 2 ) over a pH range from 5 to 9. The results indicated that the addition of siderite generally accelerated the conversion process of H 2 O 2 to ·OH regardless of initial pH values. However, the conversion ability from H 2 O 2 to ·OH was only enhanced under the acidic condition. Then, X-substituted siderite generally enhanced the conversion rate and inhibited the capacity of H 2 O 2 to ·OH under neutral and alkaline conditions. The Mn, Ca, and Mg-substituted siderite facilitated both conversion rate and capacity of H 2 O 2 to ·OH under weakly acidic conditions, while Co-substituted siderite inhibited both compared to the raw siderite. The element substitution mainly affected the stability of siderite, which resulted in the dissolution of siderite to generate Fe 2+ and contributes to the H 2 O 2 decomposition and the ·OH generation. Findings from this research suggested that the isomorphic substitution of siderite had a non-negligible impact on the transformation of H 2 O 2 to ·OH.
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DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 48
·18061-18068
·
IF 4.39
Jiahui Guo,Xueqing Feng,Songrui Wang,Qikang Wu,Shanshan Lv,Yan Zhou,Han Li,Zheng Chen,Yuzhong Zhang
Novel hexagonal α-cobalt hydroxide nanosheets are synthesized through a 2-methylimidazole-induced hydrolysis strategy with cetyltrimethylammonium bromide (CTAB) as a surfactant. The weak alkaline environment provides favorable conditions for the formation of metastable α-Co(OH)2, while the same raw material will produce β-Co(OH)2 when a strong alkali solution is used. CTAB plays a vital role not only in hexagonal oriented growth, but also in the formation of the hydrotalcite-like structure of α-Co(OH)2 with high crystallinity. The crystallinity of both α- and β-Co(OH)2 is very poor without CTAB as a surfactant. The Co in this Co(OH)2−x layer presents most of the CoII and a small part of the CoIII, and the interlayer nitrate anion balances the positive charge of the host layer. The redox function produced by the CoII and CoIII of α-Co(OH)2 together with the large layer spacing jointly promotes the electron and mass transfer. The use of hydrazine hydrate for transfer hydrogenation involves the transport of protons and electrons produced by decomposition, and the rapid transport is bound to be conducive to the reduction process. Nitro compounds with varieties of functional groups can be smoothly reduced to the corresponding amines with high selectivity, when α-Co(OH)2 was used as a catalyst under mild conditions.
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