ELECTROCHIMICA ACTA
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2026
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IF 5.8
Miao Li,Fangyuan Sun,Haibo Wu,Changxiang Hao,Chengwei Jiang,Xingyu Chen,Yanan He,Liyang Wang,Shaowei Jin,Fengyu Su,Yanqing Tian,Yan Jun Liu
Solid-state all-in-one FECDs are constructed using PEGDMA-TPU electrolyte. • FECDs achieve fast switching with 3.2 s coloring and 8.4 s bleaching. • FECDs realize dynamic patterns and 3.2 °C photothermal regulation. A key challenge in viologen-based solid-state all-in-one flexible electrochromic devices (FECDs) lies in that they display generally sluggish electrochromic response. In this work, flexible thermoplastic polyurethane (TPU) is incorporated into the cross-linked skeleton of poly(ethylene glycol) dimethacrylate (poly(PEGDMA)). By regulating the cross-linked network structure, the system is endowed with high-efficiency ion conduction and excellent mechanical flexibility. Viologen-based solid-state all-in-one electrochromic devices fabricated via this strategy exhibit superior comprehensive performance: rapid switching (3.2/8.4 s for coloration/bleaching), which is among the superior response times reported in relevant FECDs, high optical contrast (Δ T =81.9%), and excellent cycling durability (>87% retention after 1000 cycles) and reliable bending tolerance (negligible changes in CV curves after 1000 bending cycles). Moreover, the devices enable applications such as anti-counterfeiting and smart windows. Compared with conventional windows, a model house equipped with the smart window achieves a temperature reduction of 3.2°C under simulated solar irradiation within the time period of 30 minutes. This work provides robust support and lays a technical foundation for constructing fast-response viologen-based solid-state all-in-one FECDs. Download: Download high-res image (271KB) Download: Download full-size image
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Science Bulletin
·
2026
·
IF 20.7
Hong Huang,Xinyi Li,Xiaochun Xu,Xiaoyuan Sun,Jizheng Feng,Zhongfeng Wang,Mingming Wang,Shunlong Liu,Xiao Zhao
Nanoparticles (NPs) have been shown to enhance single-atom catalysis (SAC). However, current NPs are limited to single-phase and only display limited function and efficiency. Employing operando spectra, kinetic isotope effect, local pH measurement, and density functional theory calculations, we reveal that the core-shell Fe@Fe 3 O 4 NPs, as a whole, realize weakening *OH adsorption, promoting water dissociation, and tandem proton transfer. This enables Fe SAs -Fe@Fe 3 O 4-NPs to achieve an ORR half-wave potential ( E 1/2 ) of 0.952 V vs. reversible hydrogen electrode (V RHE ), outperforming commercial Pt/C ( E 1/2 = 0.844 V RHE ) and the Fe SAs -Fe NPs ( E 1/2 = 0.919 V RHE ). More importantly, the Fe 3 O 4 shell protecting the Fe core provides robust durability with negligible loss after 50,000 potential cycles between 0.6 and 1.0 V RHE , distinct from partial oxidation of Fe NPs under the oxygen reduction reaction conditions. At a device level, zinc-air batteries with Fe SAs -Fe@Fe 3 O 4-NPs as cathodic catalysts realize a peak power density of 250.2 mW cm −2 and stable operation > 10,000 charge-discharge cycles with RuO 2 at 10 mA cm −2 . This work implies a new room to enhance the SAC and offers comprehensive insights into understanding NPs in steering reaction kinetics. Download: Download high-res image (154KB) Download: Download full-size image
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ACS Catalysis
·
2026
·
IF 13.6
Wentao Hao,Zhuqian Wang,Hui Cao,Jia Qiao,Qingde Zhang,Kun Xiong,Xingchen Liu,Yong Qin,Chaoqiu Chen
The selective oxidation of CH4 to C2 oxygenates under mild conditions is a significant pathway for CH4 valorization, yet it remains extremely challenging due to the inertness of methane, the competing overoxidation, and sluggish C–C coupling kinetics. Here, we show that the N,S co-doped carbon nanotube-supported Fe5 clusters catalyst (Fe5/NSC) with adjacent Fe sites drives sequential C–H activation and C–C coupling to ethanol with a C2H5OH productivity of 1939.6 μmol·gcat–1·h–1 and a selectivity of 83.9% at 25 °C and 0.5 MPa CH4 without the assistance of CO. Comprehensive experimental investigation and density functional theory calculations reveal the critical role of adjacent Fe sites in the selective formation of C2H5OH. The adjacent Fe sites featured in Fe5/NSC synergistically facilitate the dissociation and/or partial oxidation of CH4 to distinct C1 intermediates (*OCH2 and *CH3) and subsequent OCHx–CHx coupling between them to form the key CH3CH2O* intermediate for C2H5OH production, as opposed to the conventional CHx–CO coupling pathway that primarily yields acetic acid.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiapeng Zhang,Chengqing Tang,Guqiao Ding,Zhaohui Yang,Yitan Li
This research integrates the shape-memory effect and electromagnetic interference (EMI) shielding performance by constructing a hierarchical silk fibroin/carbon nanotube (SF/CNT) sponge composite. The achieved smart composite materials exhibit both flexible shielding mechanism and tunable EMI shielding performance with tunable range of more than 350 %. The smart EMI shielding performances comes from the conductive CNT sponge with both porous and zigzag structures combining shape-memory effect originating from the pressure induced conformation transition of fibroins. Beyond multi-functionalization, this study also achieves a synergistic coordination of distinct properties, yielding exceptional tunable EMI shielding performance and excellent reusability over multiple compression-recovery cycles, providing insights for designing next-generation tunable electromagnetic protection systems and portable electronic devices. Electromagnetic interference (EMI) shielding materials generally exhibit confirmed performance due to their intrinsic structures and composition, which do not vary once constructed. Here in this study, by combining the recoverable conformational transition of silk fibroin (SF) with the EMI shielding properties of carbon nanotube sponge (CNTS), we successfully constructed the hybrid SF/CNTS with tunable high EMI shielding performance. The silk fibroin underwent a reversible secondary conformational transition, in which α-helices/random coils transform into β-sheets, enabling the shape memory effect of SF/CNTS that is associated with structural changes and mediates EMI shielding efficiency. Specifically, the 6 mm-thick SF/CNTS composite exhibits an average EMI SE of 62 dB across the X-band, which decreases to 53 dB at a 90% compressive strain. Furthermore, the hierarchical SF/CNTS architecture allows the EMI SE to be dynamically tuned within the range of 35 dB to 10 dB, demonstrating that structural regulation is effective across both macro and micro scales. Our study presents a strategy for designing smart EMI shielding materials, offering valuable insights into the development of next-generation tunable electromagnetic protection systems.
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ACS Sensors
·
2026
·
IF 10.9
Cheng Linying,Zhong Yuee,Li Manqi,Huang Shu,Tang Jianru,Zhu Xiaohua,Li Haitao,Zhang Youyu,Liu Meiling
C-reactive protein (CRP), a key inflammatory biomarker, plays a critical role in clinical diagnostics; however, its reliable quantification demands analytical methods that surpass the limitations of conventional single-mode detection by integrating high sensitivity with built-in signal fidelity. Herein, we report a dual-mode photoelectrochemical (PEC) and colorimetric sensing platform based on bifunctional cobalt–ferrocene metal–organic framework (CoFcMOF) nanoflowers (NFs) for the ultrasensitive detection of CRP. The sensor is constructed on an In 2 O 3 -sensitized CdS heterojunction, which facilitates efficient charge separation and enhanced photocurrent response. The CoFcMOF NFs serve a dual function as both an antibody immobilization matrix and a peroxidase (POD)-mimicking signal transducer. Specific antigen–antibody recognition increases the interfacial electron-transfer resistance, leading to effective quenching of the PEC signal, while the POD-like activity of the CoFcMOF NFs catalyzes the oxidation of TMB, generating a distinct colorimetric readout. This integrated approach combines the advantages of intuitive visual screening and precise PEC quantification, addressing the inherent limitations of single-mode detection systems. The dual-mode platform enables simultaneous signal acquisition and achieves ultralow detection limits of 2.9 pg/mL (PEC) and 7.5 pg/mL (colorimetric) for CRP, which was also applied for CRP detection in serum and synovial fluid samples. This design offers significant synergistic advantages in functional integration, signal amplification, detection reliability, selectivity, and universal applicability, positioning it as a robust tool for the early diagnosis and disease monitoring in inflammatory arthritis and beyond. Beyond its analytical performance, this work introduces a versatile and robust paradigm for dual-mode biosensing and provides design principles for constructing multifunctional nanoarchitectures for next-generation sensing technologies.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Sheng Shang,Yuxi Wang,Haozhe Wang,Anfeng Yu,Wenyi Dang,Yonghao Zhou,Jinlei Zheng,Luna Niu
The cracking of ethane to produce ethylene serves as the primary source of industrial by-product hydrogen, making ethylene production vital for hydrogen energy security. However, ethylene leakage poses a severe explosion risk that threatens industrial supply chains. Traditional suppression materials are often limited by a single mechanism of action and inadequate synergy. To address this, a novel ternary composite of potassium bicarbonate, ferrocene, and diatomite was prepared via recrystallization. Explosion experiments demonstrated that the material exhibited effective synergistic suppression performance for ethylene explosions. Key performance indicators, such as the maximum rate of pressure rise and the time to reach peak pressure, were significantly superior to those of corresponding binary systems. Mechanism studies revealed that this superior performance stems from a multi-level synergistic effect involving endothermic decomposition, porous quenching, and radical scavenging. This research provides novel material design insights and experimental evidence for the development of highly efficient synergistic composite explosion suppression technologies.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Jinghao Zhao,Baoqin Hao,Wei Tan,Jing Chen,Yan Meng,Lin Han,Xinhao Qu,Xin Li
Constructing vanadium oxide/metal selenide heterostructure is a promising strategy to enhance the reaction kinetics and structural stability for high-performance sodium-ion batteries (SIBs) anode. However, achieving a uniform and robust heterointerface remains challenging due to the multivalent state transformation of the V and the thermodynamic stability difference between V O and V Se bonds. Herein, we design and synthesize the V 2 O 3 /Fe 3 Se 4 @C heterostructure via a facile liquid-phase reaction followed by a seleniziation method. The unique coordination environment in a ferric vanadate and the reduction potentials difference between Fe and V cations promote the formation of a well-defined heterointerface. Density functional theory calculations confirm the formation of a built-in electric field at the heterointerface, thereby accelerating the reaction kinetics. The electric field originates from the orbital hybridization, which promotes the formation of a robust Se V O bonding configuration. Meanwhile, the carbon coating maintains structural integrity by suppressing volume expansion during cycling. These synergistic effects effectively enhance the overall structural stability of the material. Thus, the prepared V 2 O 3 /Fe 3 Se 4 @C anode exhibits exceptional electrochemical performance, delivering a high specific capacity of 378.2 mAh g −1 at 0.5 A g −1 and 308.9 mAh g −1 at 8 A g −1 , and retaining a specific capacity of 313.8 mAh g −1 after 2500 cycles at 5 A g −1 . This work establishes a new electron orbital modulation strategy for exploring high-performance vanadium oxide-based anode materials for SIBs.
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JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2026
·
IF 2.7
Muhammad Owais Malik,Li Wang,Haojie Yu,Muhammad Haroon,Lei Zhang,Dileep Ahmad,Khan Manqoosh Awan,Abdul Basit,Saqlain Raza
Ammonium perchlorate (AP) is commonly used as an oxidizer in composite solid propellant (CSP) and its decomposition temperature directly affects the combustion performance of CSP. Adding burning rate catalysts (BRCs) is the most effective way to catalyze the thermal decomposition of AP and increase the burning rate (BR) of CSP. Ferrocene (Fc) and its derivatives are the hot choice of scientists to use as BRCs but controlling its migration in CSP on prolonged storage still remains a challenge, which can lead to a catastrophic situation. Here, we synthesized six Fc-based morpholine (Fc-MPNs) compounds to catalyze the thermal decomposition of AP and address the migration problem. Several spectroscopic techniques, including 1 H NMR, FT-IR and UV–visible spectroscopy were used to confirm the structures of the prepared Fc-MPNs. The results revealed that amongst all the prepared catalysts, Fc-MPN-6 showed the best anti-migration performance and Fc-MPN-3 showed the superior catalytic performance. Cyclic voltammetry (CV) studies showed efficient electron transfer. Combustion test exhibited improved flame morphology and BR. Scanning electron microscopy (SEM) analysis of the combusted products provided insights into the morphology of the combusted products. Notably, the synthesized Fc-MPNs showed better performance in comparison with Fc and Cat, highlighting their potential applications in spacecraft propulsion and missile systems.
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COMPOSITE STRUCTURES
·
2026
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IF 7.8
Xue-Min Yang,Qian-Qian Gao,Fang-Juan Wu,Kathrin Harre,Qian-Ting Wang,Dan Xiao
Designing composite structures with simultaneous fire and smoke suppression remains challenging due to the stage-dependent pyrolysis behaviors of polymer composites during combustion. Herein, a ferrocene@cucurbituril[n] (Fc@(CB) n ) host–guest system was fabricated via a simple, green, and spontaneous self-assembly strategy and incorporated into epoxy resin as an efficient additive. With only 2 wt% Fc@(CB) n , the limiting oxygen index of the epoxy increased significantly from 23.0% to 27.5%, while the peak heat release rate, total heat release, total smoke release, and CO/CO 2 ratio were reduced by 16%, 29%, 26%, and 26%, respectively. Mechanistic investigations revealed a hierarchical combustion-catalysis behavior across different fire stages. In the gas phase at lower temperatures, iron- and aromatic-derived radicals efficiently scavenged high-energy H· and OH· radicals, suppressing flame propagation. At elevated temperatures, cucurbituril cavities adsorbed small-molecule pyrolysis gases, while ferrocene generated active iron radicals that catalyzed smoke suppression. Notably, in the condensed phase, a continuous and thermally stable char layer composed of (CB) n and Fc@(CB) n was formed for the first time, acting synergistically as a carbonization catalyst and phase-transfer medium to effectively block heat, oxygen, and mass transfer. This work elucidates a multilevel flame-retardant and smoke-suppressive mechanism enabled by host–guest chemistry and provides a novel strategy for developing high-performance fire-safe epoxy composites for architectural, transportation, and electronic applications.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jia Shen,Qian Xiang,Yake Lou,Jiajie Ye,Yanglong Guo,Wangcheng Zhan,Li Wang,Xiao-Ming Cao,Aiyong Wang,Xuan Tang,Yun Guo
The preferential oxidation of carbon monoxide (CO-PROX) in rich hydrogen is a highly appealing technology for removing trace amounts of CO in hydrogen purification. Nevertheless, the requirements for realizing both a wide optimal working temperature range and high stability under industrial operating conditions remain a significant challenge. Here, we proposed a strategy for designing robust PtFe bifunctional catalysts stabilized by silanol nests on dealuminated Beta zeolite. The silanol nests formed upon dealumination effectively anchored Fe species, which subsequently facilitated the co-localization of Pt with the Fe sites. As a result, highly dispersed Fe species were stabilized in conjunction with Pt ensembles, achieving 100 % CO conversion within a wide working temperature range of 25 °C to 180 °C. Furthermore, this catalyst also demonstrates exceptional stability, maintaining 100 % CO conversion over 72 h of continuous CO-PROX operation under industrially relevant conditions (80 °C, in the presence of H 2 O and CO 2 ). Mechanistic investigations revealed that the high efficiency of O 2 utilization on the highly dispersed PtFe nanoparticles on dealuminated Beta zeolite not only promotes activity but also enhances stability for the CO-PROX reaction.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-11
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IF 5.3
Kuang Xia,Zhao Guocai,Guo Jingyi,Tang Qin,Yu Jun,Wang Fang
Harnessing the exceptional enzyme immobilization capabilities of metal–organic frameworks (MOFs) and the exceptional electrochemical characteristics of graphene, we designed a highly efficient and cost-effective glucose sensor utilizing zeolitic imidazolate framework-8 (ZIF-8) and laser-induced graphene (LIG) with the aid of mediator ferrocene (Fc). By incorporating a cellulose acetate (CA) film as an anti-interference layer and a polyurethane (PU) film as a diffusion-limiting layer, the sensor exhibited a wide linear detection range for glucose (0.62 mM to 20 mM) with a low detection limit of 0.16 mM (S/N = 3). Notably, it demonstrated excellent selectivity, with no interference from common biological substances. The sensor also exhibited good stability, retaining 96.38% of its initial performance after 7 days of storage. Additionally, the sensor was effectively utilized for glucose detection in whole blood, with results closely matching those obtained from a commercial blood gas analyzer (GEM5000), as evidenced by a high Pearson's correlation coefficient (r = 0.9974). This method provides a portable glucose sensor that produces results highly consistent with those obtained from large-scale testing devices in hospitals, enabling convenient and accurate blood glucose monitoring for patients. Graphical
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yanchen Qiu,Qi Zhang,Ruizhe Wang,Weichu Chen,Xiang Li,Yuwen Zhu,Meifang Zhu,Gang Wang,Hengda Sun
Emerging demands for sustainable point-of-care diagnostics drive the development of paper-based organic electrochemical transistors (OECTs), yet challenges persist in achieving multianalyte detection through scalable manufacturing. A low-cost, flexible, and user-friendly multianalyte biosensing platform has been developed by combining three-dimensional microfluidic paper-based analytical devices (μPADs) with 3D printed OECTs. This platform enables the simultaneous detection of multiple essential blood biomarkers, including ions, glucose, and cholesterol. The platform was designed with closed-channels created by removing parts of the cellulose matrix and leaving the bottom of the channel hydrophilic, which significantly increases the instantaneous flow rate by 2.2-fold compared to conventional open-channels. The biofunctionalized OECT sensors demonstrated exceptional sensitivity in the micromolar (μM) range and robust anti-interference capabilities (NR < 0.07 against common interferents), ensuring reliable detection in complex biological samples. This work demonstrates the feasibility of combining direct ink writing (DIW) with paper-based microfluidics, positioning the platform as a viable solution for resource-limited settings and personalized healthcare with capabilities for extended analyte detection and high-density integration.
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危险品化学品经营许可证（带存储）