APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Jie Li,Yuxiang Yang,Guangtong Xu,Xiangxu Du,Anbang Dai,Yangchuan Ke
Spatially orthogonal CeO x –Zn sites were integrated into aerogel-derived hierarchical HZSM-5. • CeO x shifted HCl release and chlorinated-intermediate conversion to lower temperatures. • Zn promoted BTX-selective aromatization of dechlorinated and oxygenated fragments. • Accessibility-weighted bifunctional catalysis enabled cleaner and higher-value PVC/PET upcycling. Catalytic upcycling of chlorine-containing mixed plastics remains limited by the intrinsic conflict between efficient dechlorination and high-selectivity aromatization. Here we report a spatially orthogonal CeO x –Zn/Aero-40 catalyst derived from a diatomite-aerogel-templated hierarchical HZSM-5 support, in which CeO x -rich outer mesopores and Zn-containing MFI channels are integrated into a gated tandem architecture. The hierarchized support decreased the mean particle size from 386 ± 42 nm for Conv-40–274 ± 31 nm for Aero-40 and retained a shortened crystallite length of 289 ± 24 nm after dual-site loading, while exposing 3.01 wt% surface Ce and 1.86 wt% surface Zn on CeO x –Zn/Aero-40. Under the optimized two-stage conditions, CeO x -Zn/Aero-40 affords a BTX yield of 64.0 wt% on the initial dry-polymer feed basis, a BTX selectivity of 90.0% within the quantified liquid aromatics, and a dechlorination efficiency of 98.9%. Product-family analysis showed that aromatics rose to 71% whereas organochlorines fell to 2%; chlorine balance further demonstrated that 88% of chlorine was released as gaseous HCl, with only 3% remaining as oil-phase organochlorine. Taken together, the time-resolved spectroscopic/thermal analyses, probe experiments and kinetic measurements are consistent with a functionally staged mechanism in which Ce-associated sites facilitate low-temperature HCl elimination and chlorine management, whereas Zn-associated acid environments favor downstream cyclization/dehydrogenation-aromatization toward BTX. The DFT calculations support the intrinsic feasibility of these site-specific elementary steps but do not, by themselves, establish dynamic inter-site kinetic coupling. Across ten independent parallel runs, the mean BTX yield was 63.9 wt% of the initial dry polymer feed (RSD 1.0%), while the mean dechlorination efficiency was 98.8% (RSD 0.2%), retained 96.3% Zn after five cycles, and maintained high dechlorination efficiency for model and real feeds. These results establish a hierarchical dual-site zeolite platform for chlorine-tolerant aromatics-oriented upcycling of PVC/PET mixed plastics. Download: Download high-res image (274KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Yifan Ren,Zexin Liu,Kun Chen,Xiaokangbo Li,Benteng Liu,Zeqin Cui,Yang Gao,Qian Yan,Runhua Yao,Yageng Li,Ruiqiang Hang,Xiaohong Yao
Biodegradable zinc-based alloys have emerged as highly promising biomaterials for orthopedic applications, but they suffer from insufficient mechanical strength, which hinders their clinical translation. In this study, Zinc-xCopper (Zn-xCu, x = 1, 3, 5 wt%) alloys were fabricated via vacuum hot-pressing sintering, and their mechanical properties, degradation behavior, cell biocompatibility, osteogenic activity, and antibacterial properties were systematically investigated. Specifically, Zn-Cu alloys exhibited superior mechanical performance and regulated degradation kinetics. Benefiting from the remarkable grain refinement effect (grain size reduced from 5.3 μm in pure Zn to 0.74 μm in Zn-5Cu), the Zn-5Cu alloy achieved the highest mechanical strength, with a compressive yield strength of 227.72 MPa, compressive elastic modulus of 8.57 GPa. In terms of degradation performance, the Zn-5Cu alloy displayed an appropriate degradation rate. Furthermore, this alloy could significantly promote the osteogenic differentiation and mineralization of MC3T3-E1 cells. In vivo rat tibias implantation experiments further confirmed its excellent osteogenic activity. Meanwhile, the Zn-Cu alloys also exhibited outstanding antibacterial activity. The results indicate that Zn-Cu alloys have great application potential as biodegradable bone implant materials.
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JOURNAL OF NON-CRYSTALLINE SOLIDS
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2026
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IF 3.6
Haoyuan Yang,Xinyu Liu,Taiyu Duan,Weichao Wang,Qinyuan Zhang
Glass-forming region guided design gives a stable Zn(PO 3 ) 2 -AlF 3 -NaF fluorophosphate host (ΔT ≈ 166 °C) for fiber drawing. • Fluorine as a network modifier creates a low-phonon environment, boosting 1.5 μm emission. • Broadband 1.5 μm emission in bulk (47.2 nm) and fiber (ASE 1450–1650 nm, 0.187 dB/cm). Driven by the rapid growth of AI, 5G/6G, and chip-scale LiDAR, broadband 1.5 μm gain media with high efficiency and fiber compatibility are urgently needed. However, the structure-spectroscopy correlation governing the luminescence performance of Er 3+ /Yb 3+ co-doped glasses remains insufficiently understood. In this work, a Zn(PO 3 ) 2 -AlF 3 -NaF fluorophosphate glass composition (ZAFPN15) was selected based on a previously reported glass-forming region and characterized from atomic structure to fiber-level performance. Molecular dynamics simulations indicate that fluorine predominantly acts as a network modifier and that Er 3+ ions are predominantly coordinated by fluorine (Er–F coordination number ≈ 7.73). The local phonon energy around Er 3+ ions is estimated to be below 500 cm⁻ 1 , much lower than the nominal maximum phonon energy (∼1260 cm⁻ 1 ). The optimized glass exhibits a measured emission cross-section of 0.54 × 10⁻ 20 cm 2 at 1535 nm with an effective linewidth of 47.2 nm, together with a low inversion threshold (∼0.2). Fiber fabrication from this glass shows amplified spontaneous emission (ASE) spanning 1450–1650 nm with a propagation loss of 0.187 dB/cm at 1535 nm. These results demonstrate that this specific fluorophosphate glass composition can be processed into an active fiber with broadband near-infrared emission, and the structural data offer a possible explanation for the observed emission properties.
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Guojun Zhou,Rongxiang Hao,Yilin Mao,Nan Zhang,Qiqiong Ren,Jianfang Lv,Xiuling Wang,Xian-Ming Zhang
Advancing room-temperature phosphorescence (RTP) is pivotal for optoelectronics, yet a key challenge lies in precisely controlling exciton dynamics to boost RTP efficiency. This study presents a strategic approach to enhance RTP in 0D d 10 metal halides by engineering the inorganic units [MBr 4 ] 2– ( M ═Zn, Cd). Using a π-conjugated ligand as organic template, we constructed a pair of isostructural hybrid bromides with 0D “host-guest” structure, namely (PTPP) 2 MBr 4 (PTPP = Pentyltriphenylphosphonium, M ═Zn and Cd). They exhibit the cyan afterglow originating from the RTP emission of PTPP + (T 1 →S 0 ), whose efficiency and lifetime surpass those of the pristine organic chromophore due to enhanced structural rigidity. Importantly, the substitution of Zn 2+ by heavier Cd 2+ triggers a dual role: a stronger heavy-atom effect and a band-edge arrangement transform from Type II to reverse Type I. The phosphorescence quantum yields (Φ P ) increase dramatically from 10.2% ( M ═Zn) to 45.75% ( M ═Cd). The Cd 2+ -system provides more efficient intersystem crossing (ISC) channels (S 1 →T n ) and faster ISC rate, accounting for superior RTP efficiency. Furthermore, they can be employed in multi-level anti-counterfeiting and information encryption. This work elucidates the dual functionality of d 10 metal center in modulating spin-orbit coupling and electronic structure, providing new insights for the rational design of RTP materials.
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Nano-Micro Letters
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2026
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IF 38.5
Yuxuan Jiang,Bingxin Sun,Mohsen Shakouri,Bin He,Wang Zhang,Ran Wang,Tianxiao Sun,Huan Pang
Aqueous zinc-iodine batteries (AZIBs) show promise for grid-scale energy storage, but they are hampered by polyiodide shuttling, sluggish iodine redox kinetics, and irreversible active-site poisoning caused by uncontrolled adsorption. We provide a comprehensive screening of M 1 (M 1 = P, S, B) heteroatom dopants, and P is identified as the best candidate for achieving coordination-tuned, moderate adsorption that balances adsorption and catalytic activity while mitigating site poisoning. Using phytic acid as both the P source and an etchant, we create a universal in situ approach to core–shell single-atom catalysts (M 2 -P-CSNC, M 2 = Fe, Co, Ni). The unique core–shell structure achieves stable confinement of polyiodides, rapid ion transport, and protection of active sites, while in situ P doping precisely regulates the local electronic environment and d -band center of the Fe–N x active centers. In situ characterization confirms that Fe–P-CSNC has a strong reversible anchoring ability for polyiodides, which can significantly accelerate redox kinetics. The optimized Fe–P-CSNC/I 2 exhibits almost no capacity decay after 20,000 cycles at a current density of 2 A g −1 . This work’s facile heteroatom doping strategy for electronic modulation offers a reference for high-performance catalyst design in conversion-type energy storage systems. Kindly check and confirm the edit made in the title.1. We have checked and confirmed the edited title.2. We found some issues with Figure 3d and have uploaded the revised image as an attachment.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Yaxin Li,Shuqi Wang,Guanghui Chen,Shiwen Wu,Shuzhen Zheng,Hongzhi Lu,Shoufang Xu
Zn/Ce-MOF integrates fluorescence, oxidase-like and apparent hydrolase-like behavior. • Ratiometric sensing enables signal self-calibration. • Smartphone RGB signals reveal distinct response patterns for five OP standards. The widespread residue of highly toxic organophosphorus pesticides (OPs) poses a serious threat to food safety and human health, underscoring the need for sensitive screening methods. In this work, a ratiometric fluorescence sensor array was constructed based on a trifunctional Zn/Ce-MOF exhibiting intrinsic blue fluorescence, oxidase-like activity, and apparent phosphoester hydrolase-like behavior. LC–HRMS full-scan analysis further showed DDV signal depletion accompanied by a marked increase in a DMP-assigned signal after 90 min. Ce sites promoted o -phenylenediamine (OPD) oxidation to produce yellow-fluorescent 2,3-diaminophenazine (DAP), which attenuated the intrinsic fluorescence through the inner filter effect. Upon addition of OPs, the DAP-associated emission decreased while the intrinsic fluorescence of Zn/Ce-MOF recovered, resulting in a ratiometric response (F 565 /F 440 ). Meanwhile, the fluorescence variation enabled visible color changes and smartphone-assisted signal acquisition based on red, green, and blue (RGB) analysis. The proposed sensor exhibited two linear response regions toward DDV over the final concentration ranges of 0–5 and 5–30 μg/mL, with a detection limit of 0.043 μg/mL. The sensing platform was preliminarily evaluated through post-extraction matrix-spike experiments for DDV in tenfold-diluted tomato and spinach extracts, yielding post-extraction matrix-spike recoveries of 93.5–121.5%. Multivariate analysis of F 565 /F 440 , G/B, and R/G signals revealed characteristic distribution, separation, and clustering patterns for five OP standards, including dichlorvos (DDV), dimethoate (DM), chlorpyrifos (CPF), methyl parathion (MP), and trichlorfon (TCF), in standard solutions. The study therefore provides a Zn/Ce-MOF-based strategy for smartphone-assisted DDV screening in tenfold-diluted tomato and spinach extracts and multichannel response-pattern analysis of five OP standards under controlled conditions. Further studies will evaluate the applicability of the multichannel response patterns to multiple OPs in complex food matrices. Illustration of the working principle and application of the Zn/Ce-MOF ratiometric fluorescent probe for OPs detection: (A) Synthesis of Zn/Ce-MOF. (B) Proposed mechanism of Zn/Ce-MOF-mediated OP transformation and fluorescence regulation. (C) Integrated smartphone RGB acquisition and multivariate response-pattern analysis of OP standards. Download: Download high-res image (228KB) Download: Download full-size image
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Energy Storage Materials
·
2022
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IF 20.831
Zenghui Bi,Hua Zhang,Xue Zhao,Yuwen Wang,Fang Tan,Songqing Chen,Ligang Feng,Yingtang Zhou,Xin Ma,Zhi Su,Xinzhong Wang,Thomas Wågberg,Guangzhi Hu
Inexpensive, high-activity bifunctional catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are imperative for the development of energy storage and conversion systems. A nitrogen-doped carbon material with a micro−meso−macroporous structure doped with La (LaPNC) containing La−O/N−C active sites is prepared using SiO 2 particle templating of carbon and a metal node exchange strategy. The coordination environment of La sites stabilized by two oxygen and four nitrogen atoms (LaO 2 N 4 ), is further verified by X-ray absorption spectroscopy. The ORR half-wave potential reaches 0.852 V, and the OER overpotential reaches 263 mV at 10 mA cm −2 . The Zn−air battery, with LaPNC as the air cathode, has a maximum power density of 202 mW cm −2 and achieves stable charge−discharge for at least 100 h without a significant increase or decrease in the charge or discharge voltages, respectively. Density functional theory calculations suggest that LaO 2 N 4 sites exhibit the lowest activation free energy and the most easily desorbed oxygen capacity. This study provides new insights into the design of efficient, durable bifunctional catalysts as alternatives to precious-metal-based catalysts.
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Polymers
·
2023
·Vol. 15
·期 3
·734
·
IF 5
Jinliang Ma,Longlong Liu,Zihao Chen,Minghui Wang,Han Wu,Hongmiao Wang,Ding Yuan,Xin Ning
Exploring high-efficiency, low-cost, and long-life bifunctional self-supporting electrocatalysts is of great significance for the practical application of advanced rechargeable Zn-air batteries (ZABs), especially flexible solid-state ZABs. Herein, ultrathin CoFe-layered double hydroxide (CoFe-LDH) nanosheets are strongly coupled on the surface of leaf-like bimetallic metal-organic frameworks (MOFs)-derived hybrid carbon (Co@NC) nanoflake nanoarrays supported by carbon cloth (CC) via a facile and scalable method for rechargeable and flexible ZABs. This interfacial engineering for CoFe-LDHs on Co@NC improves the electronic conductivity of CoFe-LDH nanosheets as well as achieves the balance of oxygen evolution reduction (OER) and oxygen reduction reaction (ORR) activity. The unique three-dimensional (3D) open interconnected hierarchical structure facilitates the transport of substances during the electrochemical process while ensuring adequate exposure of OER/ORR active centers. When applied as an additive-free air cathode in rechargeable liquid ZABs, CC/Co@NC/CoFe-LDH-700 demonstrates high open-circuit potential of 1.47 V, maximum power density of 129.3 mW cm−2, and satisfactory specific capacity of 710.7 mAh g−1Zn. Further, the flexible all-solid-state ZAB assembled by CC/Co@NC/CoFe-LDH-700 displays gratifying mechanical flexibility and stable cycling performance over 40 h. More significantly, the series-connected flexible ZAB is further verified as a chain power supply for LED strips and performs well throughout the bending process, showing great application prospects in portable and wearable electronics. This work sheds new light on the design of high-performance self-supporting non-precious metal bifunctional electrocatalysts for OER/ORR and air cathodes for rechargeable ZABs.Keywords:carbon fiber;bifunctional electrocatalysts;bimetallic MOFs;self-supporting electrodes;Zn-air battery
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Chuanqiang Li,Xiang Liu,Xinyu Yang,Tao Peng,Yuqin Li,Maowen Chen,Chuanchuan Lin,Jing Jiang,Ziyu Su,Weijian Kong,Yang Wang
Tetragonal multilayered ZnO/CuO composites prepared by the annealing of a Zn- and Cu-containing pillar-layered metal-organic framework were characterized by using instrumental techniques and investigated as catalysts for the degradation of 4-nitrophenol (4-NP) under irradiation with UV–vis light. The as synthesized samples contained p-n junctions, amorphous-crystalline heterojunctions , which benefitted light absorption and charge separation. The calcination temperature significantly influenced both the physicochemical properties and photocatalytic activities of these composites. The sample obtained at 400 °C (TL-ZC-400) exhibited the best photocatalytic performance, achieving a 4-NP degradation efficiency of 93.93% after 40 min of illumination. The TL-ZC-400 still showed high photodegradation ability (97.2%) after four times recycling. Furthermore, the recombination of ZnO and CuO adjusted the band gap structure of TL-ZC-400. Radical trapping experiments showed that the degradation of 4-NP was mainly mediated by hydroxyl radicals and holes. A possible photocatalytic mechanism was also proposed in this study.
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Foods
·
2022
·Vol. 11
·期 16
·2405
·
IF 5.561
Qiaoling Wu,Han Tao,Yuangen Wu,Xiao Wang,Qili Shi,Donglin Xiang
Paraquat (PQ) has high acute toxicity, even at low concentrations. For most people, the main pathway of exposure to PQ is through the diet. Therefore, the development of simple and efficient methods for PQ testing is critical for ensuring food safety. In this study, a new electrochemical detection strategy for paraquat is proposed based on the specific binding of PQ to its nucleic acid aptamer. Firstly, the Zn/Fe bimetallic ZIF derived nanoporous carbon (Zn/Fe-ZIF-NPC) and nickel hexacyanoferrate nanoparticles (NiHCF-NPs) were sequentially modified onto the glassy carbon electrode (GCE). NiHCF-NPs served as the signal probes, while Zn/Fe-ZIF-NPC facilitated electron transfer and effectively enhanced the sensing signal of NiHCF-NPs. Au nanoparticles (AuNPs) were then electrodeposited on the NiHCF-NPs/Zn/Fe-ZIF-NPC/GCE and then the thiolated aptamer was assembled on the AuNPs/NiHCF-NPs/Zn/Fe-ZIF-NPC/GCE via Au-S bonding. When incubated with PQ, the formation of PQ–aptamer complexes delayed the interfacial electron transport reaction of NiHCF-NPs, which caused a decrease in the current signals. As a result, simple and highly sensitive detection of PQ can be readily achieved by detecting the signal changes. A linear range was obtained from 0.001 to 100 mg/L with a detection limit as low as 0.34 μg/L. Due to the recognition specificity of the aptamer to its target molecule, the proposed method has excellent anti-interference ability. The prepared electrochemical aptasensor was successfully used for PQ assay in lettuce, cabbage and agriculture irrigation water samples with recoveries ranging from 96.20% to 104.02%, demonstrating the validity and practicality of the proposed method for PQ detection in real samples.Keywords:paraquat;Zn/Fe bimetallic MOF;nanoporous carbon;electrochemical aptasensor;label-free;food safety
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MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 10
·1-10
·
IF 5.833
Qiu Peipei,Yuan Ping,Deng Zhichen,Su Zhengquan,Bai Yan,He Jincan
A rapid method for colorimetric monitoring of bacterial viability is described. The colorimetric method was carried out based on glucose oxidase-encapsulated Zn/Co-infinite coordination polymer (Zn/Co-ICP@GOx), which was prepared in aqueous solution free of toxic organic solvents at room temperature. The Zn/Co-ICP@GOx was confirmed to be a robust sphere structure with an average diameter of 147.53 ± 20.40 nm. It integrated the catalytic activity of natural enzyme (GOx) and mimetic peroxidase (Co (П)) all in one, efficiently acting as a biocatalytic cascade platform for glucose catalytic reaction. Exhibiting good multi-enzyme catalytic activity, stability, and selectivity, Zn/Co-ICP@GOx can be used for colorimetric glucose detection. The linear range was 0.01–1.0 mmol/L, and the limit of detection (LOD) was 0.005 mmol/L. As the glucose metabolism is a common expression of bacteria, the remaining glucose can indirectly represent the bacterial viability. Hence, a Zn/Co-ICP@GOx-based colorimetric method was developed for monitoring of bacterial viability. The color was intuitively observed with the naked eye, and the bacterial viability was accurately quantified by measurement of the absorbance at 510 nm. The method was applied to determination of bacterial viability in water and milk samples with recoveries of 99.0–103% and RSD of 0.43–7.5%. The method was rapid (less than 40 min) and applicable to different bacterial species irrespective of Gram-positive and Gram-negative bacteria, providing a universal and promising strategy for real-time monitoring of bacterial viability. Graphical abstract
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Fengxian Zhang,Ye Chen,Yang Liu,Xupo Liu,Shuyan Gao
Constructing highly efficient and durable non-noble metal modified carbon catalysts for oxygen reduction reaction (ORR) in the whole pH range is essential for energy conversion devices but still remains a challenge. Herein, the Fe/Fe 3 C nanoparticles and Fe-N X species anchored on the interconnected mesoporous carbon materials are fabricated through an economical and facile template-assisted polymerization-pyrolysis strategy. The catalyst exhibits unique features with the electronic interaction between Fe/Fe 3 C and Fe−N X , large specific surface area and high mesoporous structure as well as nitrogen doping in porous carbon skeletons, which can effectively catalyze ORR over the full pH range. In an alkaline electrolyte , the optimized catalyst displays favorable ORR performance with positive onset potential ( E onset = 0.91 V), half-wave potential ( E 1/2 = 0.83 V), long-term cycles stability and methanol tolerance, exceeding those for the commercial Pt/C. Furthermore, the prepared catalyst could be directly assembled into the alkaline Zn−air battery that exhibits the open-circuit voltage of 1.44 V, high power density of 96.0 mW cm −2 and long-term durability. Therefore, the template-assisted polymerization-pyrolysis strategy provides a promising route for designing high-performance non-noble metal decorated ORR electrocatalysts .
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