ACS Applied Energy Materials
·
2026
·
IF 5.5
Zeng Xin,Ren Zhichao,Huang Qiqiang,Peng Wei,Li Yang,Ding Mengfei,Wen Lianghao,Zhang Peng,Yin Liang,Liu Xiang
Lithium-rich manganese-based materials (LRMO) have emerged as ideal cathode materials for high-energy-density lithium-ion batteries due to their high capacity (>250 mAh/g) and low cost. However, the continuous migration and dissolution of transition metal ions (TMs) during cycling lead to severe voltage and capacity decay, limiting their application. This paper proposes a simple and efficient strategy: suppressing transition metal ion migration in LRMO by forming MXene thin layers to encapsulate the cathode or separator. This strategy leverages MXene’s adsorption capacity for Ni/Co/Mn (verified by density functional theory calculations). This adsorption reduces the migration of transition metal ions into the electrolyte or cathode, thereby mitigating complex cross-effects while simultaneously creating locally Mn-rich regions that thermodynamically suppress the irreversible phase transition of LRMO. Concurrently, MXene’s excellent conductivity optimizes the cathode’s charge–discharge kinetics. Consequently, the MXene-encapsulated LRMO cathode electrode demonstrated outstanding cycling performance (87.16% capacity retention after 200 cycles at 0.1C, 25 ° C; and 87.36% at 0.5C after 200 cycles) and reduced voltage decay. This MXene encapsulation strategy offers an approach to enhancing the comprehensive electrochemical performance of LRMO cathode lithium-ion batteries.
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ACS Applied Optical Materials
·
2026
·Vol. 4
·期 7
·2141-2154
·
IF 3.4
Wang Suihao,Zhao Yongqiang,Shen Xiaodong,Zhao Quan,Huang Jiaren,Fu Jiali,Yu Zongmian,Huang Tao,Zou Bingsuo
Polaron formation has emerged as an important mechanism
for unconventional
luminescence in metal halide semiconductors. Here, we show that incomplete
rare-earth-ion doping in the zero-dimensional hybrid halide (TMBA) 2 MnCl 4 induces magnetic-polaron-mediated emission,
rather than conventional local d-d or f-f transitions. Single-crystal
structural analysis reveals that the compounds consist of isolated
[MnCl 4 ] 2– tetrahedra separated by TMBA + cations, forming a zero-dimensional framework. Upon rare-earth
incorporation, Mn 2+ ions retain tetrahedral coordination
without the formation of octahedral [MnCl 6 ] units. Despite
preserving an invariant tetrahedral coordination framework over the
entire temperature range, the lattice exhibits a pronounced anisotropic
arrangement, giving rise to an effective one-dimensional orientational
motif embedded within the 0D structure. This structural feature enables
cooperative excited-state coupling and leads to antithermal-quenching
luminescence governed by phonon-assisted, photoinduced magnetic correlations.
Multiple emissive channels are observed, including Ln–Cl charge-transfer-related
excitonic emission (360–385 nm), Mn-centered green emission
(∼550 nm) arising from the 4 T 1 → 6 A 1 transition and associated with an exciton magnetic
bipolaron, and an orange-red emission (∼600 nm) emerging exclusively
in Ln (La or Ce)-incorporated lattices. In Mn–Ce coexisted
samples, cooperative coupling between Mn-centered magnetic polarons
and Ce-stabilized lattice/electronic polarons produces an enhanced
low-energy radiative channel with pronounced antithermal-quenching
behavior. Spin-polarized density functional theory calculations support
the photoinduced localized magnetic alignment underlying these polaron-related
emissive states. Moreover, the coexistence of Mn–Ce coupled
emissive channels enables ratiometric optical emission humidity sensing
with good reversibility and stability, in addition to their spin-related
luminescence and display functionalities, highlighting the broad application
potential of these magnetic bipolaronic systems.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhenzhen Xie,Wei Jia,Xingzhen Li,Lei Pan,Shihao Xu,Changlong Jiang
Cadmium ion (Cd 2+ ) pollution poses severe environmental and health risks due to its high toxicity, bioaccumulation potential, and persistence. Although traditional detection methods require bulky instruments and complex procedures, limiting the suitability for rapid on-site analysis. The paper introduces aptamer-based fluorescent probes and double-stranded fluorescent probe based on an aptamer and its complementary DNA (cDNA). The former is composed of aptamers and SYBR Green dyes. The detection range of Cd 2+ is 0–8 μM, and limit of detection (LOD) is 15 nM. The probe consists of a double-stranded structure formed by a 5′-FAM-labeled Cd 2+ aptamer and a 3′-BHQ1-modified cDNA. By combining this probe with a hydrogel matrix, a smartphone-based sensing platform is constructed, which enables highly sensitive and convenient detection of Cd 2+ . It indicated that the detection range of the probe for Cd 2+ is 0–50 μM, with the LOD of 27.6 nM. Molecular dynamics simulations (MD) disclosed the binding mechanism of the aptamer and Cd 2+ : the specific recognition by nucleobases such as G9, C12, and T17 in the Coulomb force-driven double-twisted folding conformation plays a crucial role. Further integrating the probe into the hydrogel matrix constructed the dsDNA@hydrogel platform successfully achieved real-time visual detection of Cd 2+ in environmental samples. It not only offers a highly sensitive and cost-effective new approach for heavy metal detection, but promotes the advancement of portable environmental monitoring technologies through the innovation of the aptamer-hydrogel system.
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Journal of Energy Storage
·
2025
·
IF 9.8
Ruchun Li,Dan Zhu,Lijuan Peng,Ying Yang,Kezhen Qi,Dingsheng Yuan
The development of highly active bifunctional electrocatalysts is crucial to the sluggish oxygen reduction reaction/oxygen evolution reaction (ORR/OER) for efficient wearable Zn–air batteries (ZAB). The Fe-N x -C moieties anchored on carbon supports emerge as a desirable alternative to ORR catalysts but its OER activity suffers from low catalytic performance and stability. Herein, a N-doped carbon-encapsulated Fe 3 C and MnO nanoparticles composite (FeMn-NC) was developed using a simple one-step pyrolysis of the self-sacrificial template. The obtained FeMn-NC possesses a hierarchical porous structure with a large specific surface area and rich pyridinic N, which are favorable for the exposure of the active sites. The introduction of the Fe 3 C/MnO interface can regulate the charge redistribution to promote ORR/OER kinetics, which is confirmed by theoretical calculations. The obtained FeMn-NC exhibits an excellent bifunctional ORR/OER activity in alkaline electrolytes. The assembled liquid ZAB with the FeMn-NC as the cathode can achieve an ultrahigh specific capacity of 792.7 mAh g −1 and charge-discharged stability up to 800 h at 10 mA cm −2 (2400 cycles). Furthermore, the corresponding flexible solid-state ZAB provides a stable open-circuit voltage of 1.50 V and a specific capacity of 676.1 mAh g −1 at 1.0 mA cm −2 with good cycling stability. This work offers a simple strategy to synthesize hierarchical porous materials with highly active bifunctional properties, which can be applied in other electrochemical energy devices.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Li Li,Xu Yang,Wei Zhao,Yongjie Wang,Xianju Zhou,Zhiyu Yang,Xiantong Tang,Jae Su Yu
Lead-free halide double perovskites have attracted significant attention due to various exceptional photoelectric properties. Nevertheless, there is a lack of blue and red light in plant growth, it is worthwhile to look for blue-red dual-emission phosphors with greater thermal stability and high quantum efficiency for creating light-emitting diodes (LEDs) for plant growth. By introducing Sb 3+ and Mn 2+ ions into Cs 2 NaLuCl 6 , which achieves light ranging from blue (455 nm) to red (630 nm) emission. The intensity of prepared material could maintain 70 % of 80 K at 470 K and perform good thermal stability. Additionally, the resemblance between the spectra of the prepared LEDs and the spectra of the Action Spectrum, β-Carotene, Chlorophyll a , and Chlorophyll b , was 75.8 %, 81.9 %, 79.4 %, and 94.7 % respectively, showing a good matching degree, indicating that the samples have a promising application potential in plant growth.
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JOURNAL OF CONTROLLED RELEASE
·
2025
·
IF 11.5
Shiyu Chen,Weimin Yin,Hui Zhi,Xiaoyou Zhang,Lulu An,Zichen Yang,Rongjie Li,Yanni Cai,Caoyi You,Yan Li,Yongyong Li,Haiqing Dong
Therapeutic strategies targeting iron metabolism to disturb the physiological functions of tumor cells have emerged as promising avenues in cancer treatment. Deferoxamine (DFOM) is an effective FDA-approved iron chelator that actively eliminates iron from cells, inducing iron-related dysfunction. However, its use is considerably limited by off-target toxicities and the innate metabolic compensatory capacity of tumor cells. To address these challenges, herein, we developed a facile manganese-doped calcium phosphate mineralized nanoparticle loaded with DFOM (termed BSA@MnCaP@DFOM). These nanoparticles polarized tumor-associated macrophages to M1 phenotype via activating Toll-like receptor 4 (TLR4) pathway, thereby cutting off their iron supply to tumor cells. This promoted the iron depletion effect of DFOM, reduced ferritin heavy chain 1 (FTH1) expression, disrupted iron metabolism, and efficiently induced mitochondrial dysfunction in the highly iron-dependent 4 T1 breast cancer cells. Consequently, the treatment triggered immunogenic cell death in tumor cells, eliciting a robust antitumor T cells immune response. Combined with mitigation of the immunosuppressive microenvironment, tumor suppression was achieved (72.5 % inhibition rate). In summary, our nanoparticles offer a promising strategy for iron metabolism disruption-mediated breast cancer immunotherapy.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 11.8
Wenyi Dong,Ajuan You,Yulou Qiu,Wanwan Liu,Jia Qiu,Yutao Zhu,Biao Zhang,Xianshu Fu,Zihong Ye,Xiaoping Yu
Cow's milk allergy is a significant global health concern, with bovine casein recognized as its predominant allergen. Rapid, sensitive, and accurate detection of bovine casein in food products is therefore essential. Here, a triple-signal lateral flow immunoassay (LFIA) for casein detection was developed by integrating an M13 phage-displayed nanobody (M13-Nb) with multifunctional MnO 2 nanosheets (MnO 2 NSs) as the signal probe. Anti-casein M13-Nb was selected from a naïve phage-displayed nanobody library through four rounds of biopanning. MnO 2 NSs exhibiting intrinsic colorimetric properties, oxidase-like catalytic activity, and photothermal capability were synthesized and conjugated with M13-Nb, enabling the MnO 2 NSs@M13-Nb-based LFIA to generate colorimetric, amplified colorimetric, and photothermal signals simultaneously. The visual limits of detection (vLOD) for these modes were 125, 15.63, and 31.25 ng/mL, respectively, with corresponding quantitative LODs of 60.97, 6.72, and 23.88 ng/mL. The assay showed high specificity and accuracy, with recovery rates of 87.92%–114.25% in spiked food samples. This triple-signal LFIA provides a rapid and reliable platform for casein detection in foods and highlights the potential of combining M13-Nb and MnO 2 NSs for on-site monitoring of food allergens.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Zishuo Gu,Jing Liao,Yaming Zhu,Jiao Huang,Yueqin Tang,Junxia Cheng,Li Yue,Xuefei Zhao
In response to the growing demand for novel materials in environmental monitoring and public safety, this study successfully synthesized fluorescent oil-rich coal-based carbon dots (ORC-CDs) via a green and facile hydrothermal route using oil-rich coal of Xinjiang as the carbon precursor. The fluorescence properties were employed as the key criterion to systematically investigate the effects of synthesis parameters, including reaction temperature, time, and nitric acid concentration. After optimization, the optimal conditions were identified as 160 °C for 12 h. The chemical structure and optical characteristics of the ORC-CDs were thoroughly characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), UV-Vis absorption spectroscopy, and fluorescence spectroscopy. In metal ion selectivity experiments, Cr(VI) exhibited a significant fluorescence quenching effect on the ORC-CD aqueous solution at specific concentrations. Additionally, the fluorescence detection capability of ORC-CDs for Cr(VI) was further tested, and the quenching mechanism of Cr(VI) in ORC-CD aqueous solution was explored. The results showed that the fluorescence response of ORC-CDs to Cr(VI) exhibited a good linear relationship within the concentration range of 0–60 µmol L−1, with a detection limit of 0.29 µmol L−1. In the spiked recovery experiment with actual water samples (tap water and river water), the spiked recovery rate ranged from 99.1% to 106.6%, confirming the accuracy of this method in actual water sample testing. Additionally, due to their excellent fluorescence properties, ORC-CDs were successfully applied to potential fingerprint imaging, quickly presenting clear fingerprint features on smooth substrate surfaces. This work provides both theoretical and experimental support for the application of coal-based carbon dot-based multifunctional fluorescence platforms in environmental monitoring and public safety.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Xinzhu Wang,Jingjing Zhao,Jingyi Peng,Weiming Tian,Xiaojun Han
The detection of toxic heavy metal ions (e.g., Cd 2+ , Pb 2+ ) in water is essential for public health and environmental monitoring. Herein, we describe the fabrication of a V₂CTₓ MXene-based electrochemical sensor on a glassy carbon electrode (GCE) for the highly sensitive detection of Cd 2+ and Pb 2+ in water. V 2 CT x was synthesized by selective etching and characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) for its morphology and composition. The results revealed that the V 2 CT x possesses a typical two-dimensional layered structure with abundant surface functional groups, thus providing active sites conducive to the adsorption and electron transfer of heavy metal ions. Cyclic voltammetry (CV) demonstrated a significant enhancement in electrochemical activity upon V₂CTₓ modification. Using the optimized conditions (V 2 CT x concentration of 1 mg/mL, pH 4.0, deposition voltage of −1.3 V, deposition time of 6 min), the detection of Cd 2+ and Pb 2+ were performed by square wave anodic stripping voltammetry (SWASV). The limits of detection for Cd 2+ and Pb 2+ were 2.28 μg/L and 2.40 μg/L, respectively, which to meet national drinking water standards. The V₂CTₓ/GCE showed good repeatability, reproducibility, anti-interference ability. The V 2 CT x /GCE holds great potential in the detection of heavy metal ions in real water samples.
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Journal of Energy Storage
·
2026
·
IF 9.8
Yaqian Dong,Shuyu Yue,Tiehua Ma,Yaohui Zhang
The development of efficient and stable oxygen reduction reaction (ORR) catalysts is critical for advancing sustainable energy technologies, particularly rechargeable zinc-air batteries (ZABs) which offer high theoretical energy density, inherent safety, and cost-effectiveness compared to other metal-air systems. However, the widespread application of ZABs is hindered by the sluggish kinetics of the air cathode ORR, and state-of-the-art Pt-based catalysts suffer from high cost, susceptibility to poisoning, and inadequate durability in neutral media. To address this challenge, non-precious metal catalysts represented by metal‑nitrogen‑carbon dopants have attracted significant attention due to their geometrically constrained coordination environments that resist hydrolytic dissociation and electronic structures capable of circumventing specific adsorption poisoning pathways. Herein, we report a molecularly engineered manganese single-atom catalyst (MnNC-0.5) synthesized via a cyano-amino coordination strategy coupled with MgO-templated pyrolysis. This approach creates well-defined Mn N 4 sites adjacent to -CN functional groups within a hierarchical porous carbon matrix. The catalyst exhibits exceptional ORR activity across the entire pH spectrum, with half-wave potentials of 0.89 V in 0.1 M KOH, 0.77 V in 0.5 M H 2 SO 4 , and 0.69 V in 0.1 M PBS. It also demonstrates remarkable stability, retaining over 90% of its initial current after 35,000 s of continuous operation. Density functional theory (DFT) calculations reveal that the adjacent -CN group electronically modulates the Mn N 4 center, optimizing the adsorption free energy of oxygen intermediates and thereby enhancing the intrinsic activity. When employed as an air cathode in a liquid ZAB, the MnNC-0.5-based device achieves a peak power density of 193.4 mW cm −2 and a high specific energy density of 1094 Wh kg Zn −1 , outperforming the Pt/C benchmark. This work provides a viable molecular-engineering strategy for designing high-performance, pH-universal ORR electrocatalysts for next-generation energy conversion and storage devices.
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Materials Today Communications
·
2026
·
IF 4.5
Haoran Jiang,Ziwen Dong,Song Kong,Chuanwen Sun,Feifei Yin
Sodium bicarbonate (NaHCO 3 ) was functionally modified using transition metal-phytic acid (PA) complexes, successfully synthesizing two composite materials, namely NaHCO 3 -P@Mn and NaHCO 3 -P@Ni. These composites were mixed with cellulose fibers in an aqueous medium to prepare flame-retardant paper, whose structure and properties were analyzed via characterization. The results showed that the original NaHCO 3 exhibited a square morphology with a smooth surface, having a diameter of 100–200 μm. After being encapsulated by phytate microcapsules, the surface roughness of the particles increased and their size decreased significantly, among which the particle size of NaHCO 3 -P@Mn was only 1 μm. In the early stage of combustion, the synergistic effect between bio-based phosphorus and transition metals played a key flame-retardant role. Performance tests indicated that the flame-retardant efficiency of both composites was improved by more than 50 % compared with commercial ammonium dihydrogen phosphate. Notably, when the addition concentration of NaHCO 3 -P@Ni was 37.65 × 10 −5 mol/g, it enabled the cellulose paper to achieve self-extinguishing behavior. In conclusion, the NaHCO 3 -P@Mn and NaHCO 3 -P@Ni composites can significantly enhance the flame-retardant performance of paper while endowing it with self-extinguishing properties, providing a new idea for the preparation of high-efficiency and environmentally friendly flame-retardant paper.
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JOURNAL OF FLUORESCENCE
·
2026
·
IF 3.1
Zhu Danhong,Wu Wanhui,Zhang Lejing,Liu Zixin,Zhao Huan,Zheng Zhongkai,Lin Mei
The development of fluorescent probes with high stability and selectivity for ferric ion (Fe³⁺) detection remains crucial for environmental monitoring. Herein, we report a one-pot hydrothermal synthesis of nitrogen and sulfur co-doped carbon dots grafted with polyvinylamine (CDs-PVAm) using citric acid and L-cysteine as sustainable precursors. The obtained CDs-PVAm exhibited strong blue fluorescence with a high quantum yield of 49% and an average fluorescence lifetime of 9.75 ns, attributed to the synergistic effect of N, S co-doping and PVAm passivation which effectively suppresses non-radiative recombination. The material demonstrates excellent environmental stability over a wide pH range (3–9), under thermal stress (25–45 °C), and prolonged irradiation. As a fluorescent probe, CDs-PVAm shows high selectivity toward Fe³⁺ among various metal ions, with a linear response range of 0–200 µM and a detection limit of 11.40 µM. Practical application in natural water samples achieved satisfactory recoveries (100.46–101.45%) with low relative standard deviations (0.71–1.43%), confirming its reliability for Fe³⁺ detection in complex aqueous matrices. This work presents a robust nanoplatform for environmental sensing with significant application potential.
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