CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Maohan Liu,Lingyi Kong,Xinyu Zhang,Yaping Yan,Haiyan Hu,Hanshen Xin,Jiayang Li,Yubin Niu,Yanfang Zhu,Yao Xiao
Construction of a structurally compatible Na 0.44 MnO 2 -derived interphase for enhanced interfacial stability and Na + transport kinetics. • In situ SXRD and XAS analyses reveal a reversible P2-OP4-P2 phase evolution and a stabilized Mn-centered local coordination environment. • The optimized material suppresses moisture/CO 2 -induced surface carbonation, Na + /H + exchange, and hydrated-phase formation, thereby markedly enhancing its air stability. • Elucidating the multiscale mechanisms of surface structural regulation for modulating structural evolution, local coordination environments, and air stability. Mn-based layered oxides are attractive cathode candidates for sodium-ion batteries (SIBs) because of their high capacity, cost effectiveness, elemental abundance, and scalable synthesis. However, their practical implementation is hindered by moisture/CO 2 -induced surface degradation, surface residual alkali accumulation, sluggish Na + transport kinetics, and unstable interfacial chemistry. Herein, Na 0.55 Ni 0.1 Fe 0.1 Mn 0.8 O 2 (NNFM) is selected as a model Mn-based layered oxide cathode to establish a residual-alkali-conversion-driven surface structural regulation strategy. Owing to the formation of a structurally compatible and chemically stable interphase, the optimized Na 0.55 Ni 0.1 Fe 0.1 Mn 0.8 O 2 @5%Na 0.44 MnO 2 (NNFM-T5) delivers a specific capacity of 197.14 mAh g −1 at 0.1C and an energy density of 556.9 Wh kg −1 based on the cathode active-material mass, demonstrating excellent electrochemical performance. NNFM-T5 also exhibits a reversible P2-OP4-P2 structural evolution, reduced interfacial polarization, and accelerated Na + transport kinetics, as evidenced by operando in situ synchrotron X-ray diffraction and distribution of relaxation times analysis. In addition, ex situ X-ray absorption spectroscopy indicates reversible Ni-centered redox, limited Fe valence variation, and stabilized Mn-centered coordination. Air-aging experiments and dynamic contact angle measurements further verify the improved air tolerance of NNFM-T5. This work shifts the focus of surface modification from empirical coating toward residual-alkali-conversion-driven surface structural regulation, providing a design principle for Mn-based layered oxide cathodes that combine high capacity, air stability, and favorable interfacial kinetics. A surface structural regulation strategy based on residual alkali conversion is developed for Mn-based layered oxide cathodes, enabling the construction of a Na 0.44 MnO 2 -derived interphase. This strategy significantly enhances the structural stability, air stability, and Na + transport kinetics of the material, providing an effective approach for the design of high-energy-density layered oxide cathodes for sodium-ion batteries. Download: Download high-res image (176KB) Download: Download full-size image
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2026
·
IF 3
Xuejiao Li,Yuxiao Wang,Haiyang Fu,Jiamin Cheng,Bo Li,Zilong Xu,Na Fan,Rui Li,Lianwei Shan,Xin Liu,Limin Dong,Hongrui Ji,Piaoping Yang
The development of efficient photothermal therapy (PTT) and photodynamic therapy (PDT) agents is crucial for overcoming the limitations of traditional cancer treatments, such as the need for single wavelength and the limited penetration depth of excitation light. The tumor microenvironment (TME), characterized by low oxygen levels and an overabundance of endogenous hydrogen peroxide (H2O2), further complicates the therapeutic efficacy. In this study, we synthesized a series of Mn-doped W18O49 materials using a one-step solvothermal method, systematically varying the solvents with n-propanol and isopropanol and manganese doping levels. The effects of solvent type and doping amount on crystal structures, morphology and photo conversion performance were investigated in detail. Under single-wavelength near-infrared (NIR) irradiation at 808/1064 nm, the synthesized materials demonstrated simultaneous hyperthermia and singlet oxygen (1O2) generation, enabling both PTT and PDT. Notably, the Mn-doped W18O49 materials accumulated in the TME could catalyze the conversion of H2O2 into O2, thereby enhancing the production of 1O2 and resulting in a self-amplifying therapeutic effect. This synergistic enhancement of PTT and PDT was further corroborated by in vitro studies, which showed significant inhibitory effects on cancer cell proliferation. Our findings demonstrate that solvent-dependent Mn doping profoundly affects the microstructure and phototherapeutic performance of W18O49 materials, providing a novel strategy for developing advanced PTT/PDT agents activated by single NIR irradiation and responsive to the TME.
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PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Siyu Wen,Jiale Cheng,Zuting Yan,Yiru Wang,Yongwei Shi,Yuhan Sun
The lack of rapid, user-friendly methods for alternariol (AOH), a prevalent emerging mycotoxin, presents a considerable analytical challenge. This work introduces an integrated sensing strategy advancing from classical homogeneous liquid-phase detection to a portable AI-enhanced paper-based biosensor. The system employed a Cu/Mn-CeO 2 nanozyme as signal generator and amplifier, and exploited the inhibitory effect of AOH on acetylcholinesterase (AChE) to suppress the thiocholine (TCh)-mediated reduction of oxidized 3,3′,5,5′-tetramethylbenzidine (oxTMB), enabling quantitative colorimetric readout. It achieved ultra-sensitive detection in the liquid phase with a limit of detection (LOD) of 0.016 pg/mL. By incorporating an aptamer affinity column for sample cleanup, the assay was transferred to a foldable paper platform. An AI-driven Monte Carlo color analysis method addressed issues of color heterogeneity and subjective interpretation, yielding an LOD of 0.12 μg/kg in wheat. This study provides a point-of-need solution for AOH screening and establishes a generalizable framework for detecting contaminants in complex samples.
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PubMed
高影响因子
WATER RESEARCH
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2026
·
IF 12.8
Jialong Chen,Jialiang Qiao,Lipeng Fu,Xinlei Zhang,Yifan Dai,Jie Liu,Zhenzhou Li,Han Zhang,Xiaobin Tang,Guibai Li,Jiaxuan Yang,Heng Liang
FeMnOx-FeMnOB modification strategy reduced the Mn-shock initiation time by 11 days. • An appropriate redox balance between Mn(II) and Mn(IV) facilitated the removal of Mn(II)aq under anoxic conditions. • FeMnOx enabled microbial enrichment, EPS secretion, and robust cake layer formation. • FeMnOB facilitated the in situ generation and replenishment of Fe/Mn oxides in conect layer through aerobic manganese bioxidation. Membrane technology is widely utilized in reservoir treatment due to its reliable performance in ensuring drinking-water quality. However, seasonal Mn shocks pose a challenge to the stable operation. Herein, we proposed membrane modification strategies for gravity driven membrane (GDM) systems, incorporating Fe/Mn oxides (FeMnOx), Fe/Mn-oxidizing bacteria (FeMnOB), and their coupled system to enhance resistance against Mn shocks. The FeMnOx-FeMnOB group exhibited excellent manganese adsorption-retention and oxidative removal performance. This system reduced initiation time by over 11 days under Mn shocks of 0.5-2.3 mg/L, significantly improving the responsiveness and adaptability to sudden Mn contamination. Based on existing evidence, FeMnOx and FeMnOB may form an efficient synergistic cycle. Specifically, FeMnOx-mediated oxidation triggered microbial extracellular polymeric substances (EPS) secretion via interfacial electron transfer. The resultant EPS, in turn, promoted FeMnOB colonization and concurrently supplied FeMnOx with a stable microenvironment and substrates. Moreover, FeMnOB metabolically oxidized and solubilized manganese to regenerate the active sites of FeMnOx in situ. This cycle was further reinforced by abiotic Fe(II)/Fe(III) and Mn(II)/Mn(IV) redox couples, which mitigated dissolved-oxygen competition under high manganese stress and ensured favorable conditions for FeMnOB. Therefore, this study unravels the abiotic-biotic synergy in Mn removal, informing green membrane strategies for emergency treatment of sudden reservoir contamination. Download: Download high-res image (403KB) Download: Download full-size image
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高影响因子
Crystals
·
2025
·Vol. 15
·期 6
·563
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IF 2.4
Jinyi Wang,Bowen Fan,Jincheng Yu,Mengqiong Huang,Jiana Song,Zhaokun Yang,Yuan Ji
Single-phase ternary Mn-Cu-Al alloy ribbons were fabricated by melt-spinning a Mn48Cu28Al24ingot on a rotating copper roller. They were used as dealloying precursor for forming the nanoporous structure in HCl solution. The basic dealloying behavior was examined by controlling the dealloying time from 5 min to 180 min at 50 °C. Due to the active chemical property, Mn and Al elements are easily etched in acid solutions. Meanwhile, Cu elements retained and rearranged. A three-dimensional bicontinous nanoporous structure was fabricated, with a ligament size of 55 nm~100 nm and pore size of 35 nm~85 nm. The porosity evolution of dealloyed MnCuAl alloy was divided into three stages. First, the dissolution of Mn and Al is so significant that formation of pores is dominant. Stage two, the rapid growth of both ligament size and pore size. The ligament/pore ratio is nearly unchanged. The last stage is ligament coarsening. Moreover, the electrocatalytic activity for glucose oxidation of dealloyed samples is examined. The 40 min dealloyed MnCuAl ribbon exhibited the highest sensitivity and relatively maximum current density.
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高影响因子
JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Kailin Fu,Weijian Chen,Jianmin Liu,Jian Liang
Perovskite oxides are increasingly recognized as cost-effective catalytic materials for facilitating both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air-electrode electrode of Zn-air batteries (ZABs) and fuel cells. In this study, we have employed a non-hydrolytic sol-gel (NHSG) technique to synthesize La 0.8 Sr 0.2 Co 0.8 X 0.2 O 3-δ (X = Fe, Mn, and Ni) perovskite nanoparticles at a low temperature of 600 °C. Among these perovskite oxides, La 0.8 Sr 0.2 Co 0.8 Fe 0.2 O 3-δ (LSCFO) exhibited the highest specific surface area of 12.68 m 2 g −1 and possessed the greatest number of oxygen vacancies. Specifically, it achieved a higher half-wave potential of 0.657 V for ORR. Meanwhile, it exhibited a lower OER overpotential of 418 mV at a current density of 10 mA cm −2 , along with the smallest ΔE value of 0.991 V. When utilized as an air electrode catalyst for ZABs, LSCFO exhibits a high peak power density of 152.2 mW cm −2 and remarkable long-term cycling stability (100 h at 2 mA cm −2 ), which are close to the performance metrics of commercial Pt/C + RuO 2 catalysts. This study demonstrates the potential to enhance the bifunctional catalytic activity of LaCoO 3 -based perovskite air electrodes for ZABs through a straightforward doping approach within a NHSG process.
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高影响因子
JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Feng Wang,Meiqi Zheng,Xiyan Zheng,Peng Liu,Daosheng Liu,Jiageng Liu,Shankui Wei,Chun Wang,Yongdong Liu,Jianqiu Deng
Due to the remarkable high energy density and high operating voltage, lithium-rich layered oxides (LLOs) are emerging as one of the most promising candidates for high-specific-energy cathode materials . However, the poor cycling stability and severe voltage degradation are key barriers, which limit their practical application. In this paper, Bi 2 O 3 modified Li 1.2 Mn 0.6 Ni 0.2 O 2 (LMO@BO) is developed to address these challenges. The uniform and dense coating is constructed on the surface of LMO, which utilizes number of oxygen vacancies in its crystal structure to mediate the release of O 2 and mitigate the irreversible loss of lattice oxygen, further suppress the phase transformation during the cycling process. Specifically, the specific discharge capacity of the LMO@BO cathode maintains 197.9 mAh g −1 at 1C with capacity retention rate of 96.3 % after 200 cycles(vs. unmodified LMO with capacity of 147.5 mAh g −1 and retention rate of 80.1 %. Meanwhile, a small amount of Bi 3+ is doped into the bulk phase to broaden the Li + migration channel, resulting in an efficient Li + diffusion. Overall, Bi 2 O 3 modified LMO sample is conducive to meeting the requirements of high energy density for lithium-ion batteries applications.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2013
·
IF 1.913
L.Z. Pei,Y.K. Xie,Y.Q. Pei,Y.X. Jiang,H.Y. Yu,Z.Y. Cai
Mn vanadate nanosheets have been synthesized via a facile hydrothermal route using ammonium metavanadate and Mn acetate as the raw materials, polyvinyl pyrrolidone (PVP) as the surfactant. X-ray diffraction (XRD) shows that the Mn vanadate nanosheets are composed of monoclinic MnV 2 O 6 phase. Scanning electron microscopy (SEM) observation indicates that the nanosheets have the average thickness of about 50 nm, length of 2–10 μm and width of 800 nm to 2 μm. The growth process of the Mn vanadate nanosheets has also been discussed based on the analysis of the roles of the growth conditions on the formation of the Mn vanadate nanosheets. The nanosheets show good photocatalytic activities for the degradation of methylene blue (MB) under visible light irradiation. About 72.96% MB can be degraded after visible light irradiation for 1 h over 10 mg Mn vanadate nanosheets in 10 mL MB solution with the concentration of 10 mg L −1 .
研究领域:
材料科学
·
环境科学
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Guihao Hu,Yu Li,Yao Liu,Jie Yang,Tiantian Luo,Jie Zhong,Wensheng Yue,Zhike Li,Xianfu Li,Jiang Zhu
Tumor hypoxia limits radiotherapy and chemotherapy efficacy by promoting treatment resistance, while hypoxia-activated prodrugs (HAPs) like Tirapazamine (TPZ) face clinical failure due to insufficient tumor hypoxia. To address this challenge, we engineered HRP-catalyzed Mn(II) chelate-doped TPZ@CaCO₃/PDA-Mn@PEG nanoparticles (TCPPM NPs) that actively amplify hypoxia for potent TPZ activation. The hollow CaCO₃ core enables pH-responsive TPZ release (80% at pH 5.5), while the Mn-DopaCDTA-doped PDA shell provides enhanced T1-weighted MRI contrast ( r ₁ = 17.6 mM⁻¹s⁻¹, per Mn, 25 °C, 0.5 T), photoacoustic/ultrasound imaging, and synergistic PTT/PDT via ROS generation (4.0-fold increase, 1% O₂ conditions). In 4T1 tumor models, TCPPM NPs achieved 85% tumor reduction (vs. 45% for TPZ alone) and 45-day survival, overcoming HAP limitations through hypoxia amplification (PDA ROS O₂ consumption + 61.3 °C PTT) and calcium-mediated mitochondrial damage. This HAP-specific theranostic platform integrates precise imaging-guided therapy, presenting a breakthrough for hypoxia-targeted cancer treatment.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xueqian Ji,Yuxing Xu,Qing Xia,Yuncheng Zhou,Jiechen Song,Hailan Feng,Pengfei Wang,Jun Yang,Qiangqiang Tan
With the increasing demand for high energy density and rapid charging performance, Li-rich materials have been the up and coming cathodes for next-generation lithium-ion batteries. However, because of oxygen evolution and structural instability, the commercialization of Li-rich materials is extremely retarded by their poor electrochemical performances. In this work, Li-deficient materials Li0.3NbO2 and (Nb0.62Li0.15)TiO3 are applied to functionalize the surface of Li1.2Mn0.54Ni0.13Co0.13O2, aiming to suppress oxygen evolution and increase structural stability in LIBs. In addition, a fast Li-ion transport channel is beneficial to enhance Li+ diffusion kinetics. The results demonstrate that the electrodes decorated with Li0.3NbO2 and (Nb0.62Li0.15)TiO3 materials exhibit more stable cycling stability after long-term cycling and outstanding rate capability.
研究领域:
材料科学
·
电化学
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高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 23
·3568-3575
·
IF 3.382
Kun Bai,Rihui Tan,Bao Ke,Xiaogang Xue,Jialong Zhao,Bingsuo Zou,Ruosheng Zeng
In recent years, halide perovskites have attracted great attention as a type of well-known material, especially inorganic perovskites like CsPbX3 (X = Cl, Br, and I). Herein, we introduce a new family of doped nanocrystals offering unique insights into the synthetic chemistry of doped perovskites. Mn-Doped Cs3Pb6.48Cl16 nanocrystals with pure dopant emission were prepared at room temperature with a low Mn/Pb feed ratio (>1.4). The band edge luminescence of Mn:Cs3Pb6.48Cl16 was almost completely inhibited, and the photoluminescence quantum yields (PL QYs) of Mn ions could reach up to 25%. Furthermore, the temperature-dependent PL spectra and temperature-dependent lifetime of the new family of doped nanocrystals indicated that the inflection point affects both the PL intensity and the PL lifetime of Mn2+ ions with increasing the temperature, which is related to the Mn/Pb ratio.
研究领域:
材料科学
·
化学
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高影响因子
Molecular Catalysis
·
2022
·
IF 5.089
Yi Yang,Jia Fang,Zhongwei Meng,Ping Pu,Qian Zhang,Chengcheng Yi,Suozhu Pan,Yalong Li
To solve the soot elimination and optimize catalyst diesel particulate filter (CDPF) regeneration strategies, a series of Mn-Ce catalysts with different Mn/(Mn+Ce) molar ratios are successfully synthetized by hydrothermal method and the complete catalytic oxidation of diesel engine soot are investigated. Compare to CeO 2 and MnO 2 , the catalytic promotion on soot combustion of Mn-Ce catalysts is more excellent by thermogravimetric experiments due to their better ability to activate oxygen species, which is consistent with results in characterization analysis. Among as-prepared catalysts, MC-0.40 has the best catalytic activity with the lowest starting temperature ( T s ), peak temperature ( T p ) and largest comprehensive combustion index ( S ) both in O 2 /N 2 and NO/O 2 /N 2 atmosphere. Influence factors on catalytic performance are studied. Weight ratios of soot/MC-0.40 catalyst are suitable at the range of 1:9–1:13, which makes soot combustion more easily. Ashes in the reaction process show adverse effects due to their ability to increase ignition point by inhibit heat and oxygen transfer. Mn-Ce catalysts are more sensitive and show better catalytic activity in NO atmosphere because of generations of abundant adsorbed species and NO adsorption/desorption. The three consecutive cycles of MC-0.40 catalyst are performed to study the catalytic stability, and thermogravimetric curves show that the potential reusability of MC-0.40 catalyst can be relatively accepted in soot combustion.
研究领域:
环境科学
·
催化材料科学
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高影响因子
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