CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yuanzhou Mu,Mengmeng Sun,Siyi Guo,Tingting Dong,Lizhong He
A 3D honeycomb-like Ni–Co–Mn oxide composite is grown on carbon cloth. • Multi-component synergy enhances charge storage. • The electrode delivers 349.7 mAh g −1 and retains 90% capacitance after 30,000 cycles. • An asymmetric device achieves 68.99 Wh kg −1 and 98.33% retention after 20,000 cycles. Exploring promising electrode materials with enhanced specific capacitance, cyclic stability, and capacitance retention for supercapacitor (SC) applications remains a significant challenge. Herein, a three-dimensional (3D) honeycomb-like porous ternary Ni-Co-Mn metal oxide composite electrode material was successfully grown on a carbon cloth (CC) substrate, serving as a promising multifunctional candidate for high-performance supercapacitors. In this design, NiCo and NiMn precursors were first fabricated on the surface of carbon cloth via a facile two-step hydrothermal deposition route, followed by in situ high-temperature annealing to yield a high-performance electrode material. Multiple characterization techniques indicate that the electrode material exhibits a 3D porous structure comprising NiCo 2 O 4 , Ni 6 MnO 8 , NiMnO 3 , and CoMnO 4 , collectively denoted as NC@NM-O. Leveraging the synergistic effects of multiple components and unique structural features, the NC@NM-O electrode delivers an ultra-high specific capacitance of 2517.54 F g −1 at a current density of 1 A g −1 and maintains 90.02% capacitance retention at a high discharge rate of 10 A g −1 after 30,000 cycles. An asymmetric all-solid-state supercapacitor, assembled with an activated carbon (AC) negative electrode (NC@NM-O//AC), achieves an energy density of 68.99 Wh kg −1 and a power density of 827.99 W kg −1 at a working voltage of 1.8 V. After 20,000 cycles, the device maintains an impressive capacitance retention rate of 98.33%. Overall, this work demonstrates that rationally designed, multi-component transition metal oxides can serve as advanced battery-type electrode materials for energy storage devices and provides a promising strategy for the development of next-generation high-performance supercapacitors. Download: Download high-res image (152KB) Download: Download full-size image
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Shiqiang Sun,Chuanjun Yuan,Ming Li,Meng Wang,Guo Cheng,Ke Liang
By using naturally abundant diatomite with unique particle and porosity structures as the silica precursor, a novel green-emitting diatomite-derived Zn 2 SiO 4 :Mn phosphor has been obtained as a dual functional sensor for developing latent fingerprints, serving as a fingerprint powder and a reagent for small particle reagents (SPRs). Parameters including calcination duration, calcination temperature, molar ratio of manganese salt to zinc and manganese salts, and molar ratio of zinc and manganese salts to diatomite have been adjusted to optimize luminescent property of this phosphor. Formation mechanism has been proposed based on the change of particle morphology and mesopore structure. With respect to material synthesis, high porosity of diatomite plays a critical part in ensuring uniform doping of Mn 2+ , lowering reaction temperature, sparing inert or reducing atmosphere. Furthermore, surplus diatomite in the precursors results in basic retention of particle morphology which is favorable for latent fingerprint development. Efficient green emission centered at 525 nm of the diatomite-derived Zn 2 SiO 4 :Mn under 254 nm excitation originates from the 4 T 1 → 6 A 1 transition, making it a very capable fluorescent fingerprint powder that can suppress interferences from various surfaces, especially with the aid of 530 nm band-pass filter as an optical filter and green channel of RGB images as a digital filter. Given that the luminescence of diatomite-derived Zn 2 SiO 4 :Mn phosphor is not subject to external environment factors such as water or dissolved components, a fluorescent SPR prepared by adding a certain amount of this powder (10 mg mL −1 ) to an aqueous solution of sodium dodecyl sulfate (0.050 wt%) shows better performance compared with some commercially available SPRs. Latent fingerprints on glass sheets can be clearly visualized even if they have been immersed in water as long as 5 days. Therefore, the successful acquisition of green luminescent diatomite-derived Zn 2 SiO 4 :Mn contributes to both the synthesis of this popular green-emitting phosphor and the application of fingerprint development.
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PubMed
高影响因子
Nano Energy
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2026
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IF 16.7
Yan Zheng,Linjing Qiao,Zhongyang Wang,Hao Gong,Boyu Liu,Jiajun Wang,Liping Tong,Zhiyuan Zhao,Xiao Zhou,Tongxiang Fan
Chemical pressure engineering of Jahn-Teller distortion enables broadband high emissivity. • A quantitative Jahn-Teller distortion index ( Q OJT ) is established to correlate structure with emissivity. • Ca 2+ doping (Cu, Cr, Mn) 3 O 4 spinel achieves an emissivity of 0.947 across the 0.4–25 μm range. • Exceptional thermal stability is demonstrated with less than 1.4% degradation at 1673 K. • An 11% enhancement in heating rate is achieved in practical radiative heating tests. Infrared radiation materials with broadband emissivity and high thermal stability are highly desirable for energy saving and thermal management applications. However, achieving high emissivity across the visible to mid-infrared range (0.4–25.0 μm) remains challenging due to the discontinuous absorption mechanisms in ceramics. Herein, a strategy based on promoting Jahn-Teller (JT) distortion is proposed to enhance the broadband emissivity of (Cu, Cr, Mn) 3 O 4 spinel. Substituting Cu 2+ with alkaline-earth ions (Mg 2+ , Ca 2+ , Sr 2+ ) introduces tunable chemical pressure, which modifies the local electric field and valence state distribution, thereby regulating the JT structural evolution. An octahedral JT structural descriptor ( Q OJT ) is developed to quantitatively compare JT structural evolution among different compositions. The Q OJT values show a positive correlation with broadband emissivity. The optimized JT structural evolution simultaneously enhances electronic transition, carrier and lattice vibration absorption, enabling synergistic regulation of broadband emissivity across the entire 0.4–25.0 μm spectral range. Among the investigated compositions, Ca 2+ -doped (Cu, Cr, Mn) 3 O 4 exhibits a broadband emissivity of 0.947 and maintains excellent stability under a simulated hypersonic environment at 1673 K. In radiative heating test, it achieves a heating rate approximately 11% higher than that of Al 2 O 3 . These findings demonstrate that chemical pressure provides an effective strategy for regulating JT structural evolution and designing broadband thermal radiation ceramics for high temperature applications. Download: Download high-res image (225KB) Download: Download full-size image Chemical-pressure-tuned Jahn-Teller distortion in (Cu, Cr, Mn) 3 O 4 spinel enables broadband high emissivity (0.947, 0.4–25.0 μm) and exceptional thermal stability up to 1673 K. A quantitative octahedral Jahn-Teller distortion index ( Q OJT ) correlates directly with emissivity performance. The optimized material achieves a 11% acceleration in heating rate, demonstrating its potential for high-temperature radiative transfer and thermal management applications.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Jie Ding,Jing Zhang,Boxia Liu,Yuyu Wang,Dongxu Han,Yeqiong Huang,Chuhan Xing,Zhi Song
MnFe-O activates PMS to remove 99.34% phenol within 30 min. • Oxygen vacancies regulate Mn-Fe dual-site electronic coupling. • MnFe-O shows higher Fe 2+ and Mn 3+ contents for rapid redox cycling. • O 2 •− / 1 O 2 -coupled pathways dominate phenol oxidation in MnFe-O/PMS. • MnFe-O/PMS maintains high activity in diverse real water matrices. Peroxymonosulfate (PMS) activation technology has significant application potential in the removal of phenolic pollutants, but its catalytic performance is still limited by problems such as insufficient regulation of the electronic structure of active sites and unclear interfacial reaction pathways. This study used MnFe Prussian blue analogue (MnFe-PBA) as a precursor to construct a series of MnFe-X (X = O, S, Se) catalysts through thermal conversion and oxygen vacancy-related defect engineering, and systematically compared the effects of different vacancy types on the PMS-activated degradation performance of phenol. The results showed that the MnFe-O sample, which was jointly regulated by oxygen vacancy-related defects and structural reconstruction, exhibited the best catalytic activity, achieving 99.34% phenol removal within 30 min, with an apparent rate constant as high as 0.20 min −1 , which was significantly better than the MnFe-PBA and S/Se vacancy-regulated samples. XPS analysis showed that the increased proportions of Fe 2+ (77.25%) and Mn 3+ (70.00%) in MnFe-O created a more favorable local electronic environment for electron coupling and redox cycles. EPR and quenching results indicate that •OH, SO 4 •− , O 2 •− and 1 O 2 are generated simultaneously in the system, and an oxidation pathway dominated by O 2 •− / 1 O 2 coupling is ultimately formed. This work reveals the key role of oxygen vacancy-related defects and structural reconstruction in jointly regulating the activation of PMS by Mn-Fe dual sites, providing a new mechanistic basis for defect engineering-driven bimetallic catalyst design and efficient purification of phenolic wastewater. Download: Download high-res image (230KB) Download: Download full-size image
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Houshan Sha,Juan Huang,Qing Li,Chunmei Li,Hua Lin
To address the issues of sluggish kinetics in the oxygen evolution reaction (OER) for water electrolysis, as well as the insufficient activity and stability of non-noble metal catalysts, a Mn-doped core-shell structured FeNi 2 Mn 0.06 metallic aerogel was successfully fabricated via a one-step reduction method in this study. The sample features a porous aerogel architecture with a high specific surface area (71.78 m 2 g −1 ) and a hierarchical electron control network of “Ni–Fe–Mn”. In a 1 mol/L KOH, the sample achieves an overpotential of only 217 mV at 50 mA cm −2 , a Tafel slope of 33.8 mV dec −1 , and maintains good stability. Mechanistic analysis indicates that the three-dimensional porous network endows the material with a high specific surface area and excellent conductivity, while Mn doping and the core-shell interface jointly optimize the electronic orbital structure of active sites, which is crucial for the significant enhancement of catalytic performance. This study provides new insights for designing high-performance non-noble metal OER catalysts and lays a foundation for advancing the large-scale application of water electrolysis for hydrogen production.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zichen Shangguan,Xingzhong Yuan,Longbo Jiang,Chencheng Qin,Xiangyan Chen,Jing Bai,Zhiyan Feng,Jingyi Wang,Hou Wang,Hui Wang
A Co Mn atomic switch reconstructs radical and non-radical PMC activation pathways. • Nominal waste O 2 is valorized into selective 1 O 2 via a unique cascade. • The non-radical route yields 13.3-fold rate hike and effluent detoxification. • High robustness is proven over 100-h continuous flow operation in real water matrices. Advanced oxidation processes (AOPs) hold great promise for pollutant abatement, yet selectively triggering non-radical pathways remains a formidable challenge, as radical and non-radical routes often compete kinetically. Here, by exploiting the confined framework of Silicalite-1 zeolites, we engineer bimetallic Co Mn sites where tailoring the Co/Mn ratio drives a structural evolution from isolated diatomic to nanoclusters, functioning as an atomic-scale switch to govern this competition in peroxymonocarbonate (PMC) activation. A Co-rich composition stabilizes atomically dispersed heteronuclear Co Mn sites featuring Mn-promoted Co(II) centers. This precise configuration kinetically inhibits direct peroxide cleavage and instead promotes interfacial single-electron transfer to oxygen (O 2 ), thereby valorizing this traditionally wasted byproduct into the non-radical singlet oxygen ( 1 O 2 ) generation. Conversely, a Mn-rich composition induces aggregated nanoclusters with abundant electron-deficient oxygen vacancies, which facilitate peroxy-bond dissociation and shift the reaction toward radical pathways. Corroborated by density functional theory and comprehensive experimental validations, this composition-dependent pathway regulation affords the optimized non-radical system a 13.3-fold kinetic enhancement and stable continuous-flow operation over 102 h. Download: Download high-res image (130KB) Download: Download full-size image
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高影响因子
ACS Catalysis
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2026
·Vol. 16
·期 16
·15999-16012
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IF 13.6
Tian Ningbo,Ma Hong,Chen Fei,Ding Runlong,Jia Lingyu,Yang Shihao,Dang Shanshan,Tu Weifeng,Zhang Zhenzhou,Han Yi-fan
Given the similar electronic structure of N and C atoms, iron nitrides and iron carbides are both active for Fischer–Tropsch synthesis. In this work, a series of FeMn- x C 3 N 4 catalysts were prepared via NH 3 thermal decomposition of graphitic carbon nitride (g‑C 3 N 4 ). Tuning the addition content of g-C 3 N 4 can promote the dispersion of Mn species and increase the ratio of Fe 2 N to Fe 4 N, regulating product distribution from C 2+ alcohols to olefins for syngas conversion. The iron nitride catalyst without g‑C 3 N 4 shows the surface enrichment of Mn species, which promoted the formation of CHO* and transformation toward C 2+ alcohol, resulting in the proportion of C 2+ alcohols in C 2+ products reaching up to 36.2%. The introduction of g‑C 3 N 4 promoted the dispersion of Mn species and facilitated electron transfer from Mn to Fe, generating electron-rich Fe species that enhanced the dissociative adsorption of CO and boosted the conversion of CHO* to CH*. As a result, the olefin proportion in C 2+ products remarkably increased to 74.0% while decreasing the proportion of C 2+ alcohols to 10.2%. Density functional theory (DFT) indicated that the energy barrier from CHO* to CH* decreased on the surface of highly dispersed MnO x -modified Fe 2 N. Simultaneously, the adsorption energy of olefins decreased, leading to the increasing selectivity of olefins. This work acquired a better understanding of tuning reaction pathways from C 2+ alcohol synthesis to olefin synthesis on iron nitride catalysts, aiming to provide guidance on the optimization of catalyst design for efficient syngas conversion.
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高影响因子
Journal of Materials Chemistry A
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2026
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IF 9.2
Xin Li,Zhongya Jia,Yi Wang,Kuo Liu,Xi Li,Tao Qi
The development of electrocatalysts that simultaneously exhibit high activity and robust stability for the oxygen evolution reaction (OER) is critical to advancing proton exchange membrane water electrolysis (PEMWE). In this work, Mn-doped RuO2 is composited with acid-resistant and highly conductive Ti4O7 via a simple molten salt method, yielding a Mn-RuO2/Ti4O7 hybrid electrocatalyst. Electrochemical measurements reveal that Mn-RuO2/Ti4O7 achieves a low overpotential of 194 mV at 10 mA cm⁻² and maintains stable operation for over 220 h at this current density. In situ spectroscopic analysis and computational studies further indicate that Mn doping modulates the electronic interplay between RuO2 and Ti4O7, which not only suppresses over-oxidation of Ru at high potentials but also promotes the deprotonation kinetics of reaction intermediates, thereby significantly enhancing the overall catalytic performance. This work offers an effective strategy for balancing activity and stability in acidic OER electrocatalys.
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高影响因子
Surfaces and Interfaces
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2026
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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
Molecular Catalysis
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2026
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IF 4.3
Chao Wang,Ting Fan,Shunfang Lv,Tianfu Zhang,Juan Zhang,Jiangang Chen
A series of hydrophobically modified MnO 2 -coated Fe 3 O 4 (Fe@Mn) catalysts were prepared to investigate the effect of the interaction strength between Fe@Mn and hydrophobically modified SiO 2 (SiO 2 -c) on their physicochemical properties, FTS performance and CO 2 selectivity, including granule mixing of Fe@Mn and SiO 2 -c (Fe@Mn+SiO 2 -c (g)), powder mixing of Fe@Mn and SiO 2 -c (Fe@Mn+SiO 2 -c (p)) and core-shell structure of Fe@Mn@SiO 2 -c. The interaction between Fe@Mn and SiO 2 -c evolves and strengthens with the structural progression from physically mixed to core-shell configurations. Contact angle measurements indicate that Fe@Mn@SiO 2 -c exhibits superior hydrophobicity compared to Fe@Mn+SiO 2 -c (g/p). Fe@Mn+SiO 2 -c (g/p) maintains a CO 2 selectivity comparable to that of Fe@Mn, while exhibiting significantly enhanced stability. Although Fe@Mn@SiO 2 -c shows a relatively lower CO conversion, it achieves the lowest CO 2 selectivity alongside a higher selectivity for light olefins. The study reveals that the altered surface microenvironment of Fe@Mn@SiO 2 -c is the key factor in suppressing the water-gas shift (WGS) reaction activity during FTS, thereby reducing CO 2 selectivity. This work elucidates the underlying mechanism by which the interaction mode between the Fe-based catalyst and the hydrophobic material influences the FTS performance, particularly the CO 2 selectivity.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
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IF 6.6
Yi-bo Li,Gui-yong Xiao,Kang-qing Zuo,Zi-han Xu,Wen-ju Qiu,Ning-bo Li,Yu-peng Lu
The construction of multifunctional phosphate coatings on metallic implants has been proven to possess remarkable potential in promoting bone regeneration. However, systematic investigations into element-doped manganese phosphate (MnP) coatings on titanium (Ti) remain scarce. In this study, phosphate chemical conversion (PCC) was employed to fabricate a series of MnP coatings by doping with varying concentrations of Calcium (Ca) and Zinc (Zn) ions. The results showed that the introduction of Ca 2+ and Zn 2+ effectively refined the MnP crystals and subsequently induced the transformation of the original prismatic crystal structure into unique layered and block-like micro/nano structures. Structural analysis indicated that Ca 2+ and Zn 2+ replaced Mn 2+ in the crystal lattice, with Zn 2+ potentially inserting into the hydroxyl column sites, forming stable chemical bonds. Moreover, Mn 2+ could further replace Zn 2+ in zinc phosphate (ZnP), leading to the formation of manganese-zinc phosphate (MnZnP). The doped coatings exhibited high bonding strength, appropriate surface roughness, and improved wettability. In vitro biological evaluations demonstrated that the Ca and Zn-doped MnP coatings on Ti substrates showed superior cell adhesion, proliferation, and osteogenic differentiation compared to the MnP coating. This study provides a feasible strategy for surface functionalization of Ti-based implants and efficient repair of bone defects.
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高影响因子
WATER RESEARCH
·
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
危险品化学品经营许可证（带存储）