Nano Energy
·
2026
·
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.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
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
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
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.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·Vol. 36
·期 80
·e78146
·
IF 19.9
Kai Liu,Lingzhi Gao,Yihan Liu,Zhichao Zhang,Yingjie Mao,Xing Gao,Denghui Xu,Jun Zhou
Low-dimensional Mn-based organic-inorganic metal halides (OIMHs) have attracted considerable interest for optoelectronic applications owing to their unique d–d electronic transitions, environmental friendliness, and structural tunability. Nevertheless, achieving simultaneous control over emission color and intensity within a single precursor system remains challenging. Herein, we propose a dual-dimensional compositional engineering strategy based on the same precursor (C 6 H 14 ClN) to synergistically tune the luminescence properties of Mn-based OIMHs via a combined computational-experimental approach. By simply varying the molar ratio of the organic amine salt to MnCl 2 and further adding raw materials to the as-obtained products, we achieve reversible switching between (C 6 H 14 N)MnCl 3 and (C 6 H 14 N) 3 MnCl 5 , accompanied by a transition in dimensionality from 1D) to 0D), a change in Mn 2+ coordination number from 5 to 4, and a corresponding emission color shift from red to green. Moreover, substituting Cl − with Br − optimizes the Mn···Mn distance, reducing energy transfer between Mn 2+ ions. This effect effectively suppresses non-radiative recombination induced by the heavy-atom effect, thereby significantly enhancing the green emission intensity of (C 6 H 14 N) 3 MnBr 5 . This work not only elucidates the composition-structure-luminescence relationship in low-dimensional Mn(II)-based OIMHs, but also provides clear compositional engineering guidelines for designing next-generation high-performance and emission color-tunable metal halides.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Guangwei Wu,Liu Yang,Bin Wang,Weiguo Tu,Hao Jiang,Xuejun Pan
Mn AOS controlled the partitioning of catechol interfacial redox pathways. • Low-Mn AOS birnessite sustained late-stage catechol depletion and Mn release. • Persistent organic radicals revealed single-electron transfer during catechol oxidation. • Radical accumulation was decoupled from catechol depletion and Mn release. • Anions and organic acids reshaped Mn AOS -dependent interfacial reactivity. Phenolic compounds are reactive components involved in organic carbon transformation and contaminant fate in soils and sediments. Manganese oxides are important natural oxidants, yet how the Mn average oxidation state (Mn AOS ) regulates phenolic interfacial oxidation on birnessite remains unclear. Here, four birnessite samples with different Mn AOS values were synthesized, and catechol was used as a representative o-diphenolic compound to probe Mn AOS -dependent interfacial redox processes. All samples retained the layered δ-MnO 2 phase, whereas decreasing Mn AOS from 3.39 to 3.28 altered layer stacking, pore structure, local Mn–O environments, and initial electrochemical responses. Catechol was rapidly depleted in all systems with simultaneous dissolved Mn release. HB3 and HB4 showed stronger sustained transformation in the middle-to-late stage, with C t /C 0 decreasing to 0.09 and 0.07 at 360 min, respectively, and dissolved Mn reaching 3.02 and 3.13 mg L −1 . EPR detected oxygen-centered semiquinone-like persistent organic radicals near g = 2.0046, but radical intensities were not fully synchronized with terminal catechol depletion or Mn release. Post-reaction Raman, FTIR, SEM, and XPS further indicated organic deposition, Mn valence reduction, and changes in the surface morphology and oxygen environment. Weakly alkaline conditions enhanced catechol transformation, whereas HCO 3 - , HPO 4 2- , and citric acid suppressed the reaction. Overall, Mn AOS -dependent differences were observed in the stage-dependent coupling among catechol transformation, dissolved Mn release, persistent organic radical accumulation, and surface evolution. These findings identify Mn AOS as an important descriptor of birnessite interfacial reactivity toward phenolic compounds. Download: Download high-res image (195KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Wenxuan He,Zhixue Teng,Zhifeng Ao,Tiefeng Zhao,Zhigang Shen
Overcoming the enthalpy–entropy compensation effect remains a formidable challenge in chemical upcycling of polyesters. Empirical catalyst designs typically maximize Lewis acidity, lowering activation enthalpy (Δ H ‡) for ester activation but triggering an entropic penalty (Δ S ‡) that retards kinetics. Here, we establish a “moderate acidity” principle that balances these competing thermodynamic demands. Eyring analysis shows that optimal 5% manganese (Mn) doping enables a substantial reduction in Δ H ‡ while mitigating the entropic penalty. Mn-doped zinc oxide (ZnO) catalysts prepared via microfluidic synthesis achieve optimal performance at 5% Mn doping, delivering 100% PET conversion, 94.7% BHET yield, and a space–time yield of 250 g monomer g cat −1 h −1 , twice that of pristine ZnO. Life-cycle and techno-economic assessments demonstrate 3.7-fold lower greenhouse gas emissions and 2.4-fold cost reduction relative to conventional routes. Complete atomic utilization is achieved by valorizing glycolysis mother liquor into high-performance waterborne polyurethanes, establishing a zero-waste circular economy for plastics.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Chaoqi Shen,Wei Lin,Lulu Liu,Peng Yang,Chenxi Fu,Lianbang Wang
The escalating demand for lithium-ion batteries emphasizes the urgency of developing cobalt- and nickel-free cathodes ascribed to the high cost of these two metals. LiMnxFe1–xPO4 (LMFP) emerges as a promising candidate due to high operating voltage compared to LiFePO4 while suffering from inferior kinetics and cycling instability. This study demonstrates that precise pH control during the solvothermal process is pivotal for optimizing the LMFP/C microstructure and performance; furthermore, the mechanism of morphology evolution along with pH value and reaction duration is summarized. LiMn0.7Fe0.3PO4/C composites synthesized under varied pH conditions were thoroughly characterized and electrochemically evaluated. Results reveal that a moderately acidic environment (pH 4) facilitates the formation of a unique nanoflower architecture composed of (010)-oriented nanosheets with a highly graphitized carbon coating and minimal antisite defects after calcination. This optimal structure endows LiMn0.7Fe0.3PO4/C composite sample LMP/C-P4-24 with superior Li+ diffusion kinetics and charge-transfer efficiency, enabling a high discharge capacity (151.5 mAh g–1 at 1 C), outstanding cycling stability (96.1% retention after 500 cycles), and excellent rate capability (110.3 mAh g–1 at 10 C). In contrast, synthesis at higher pH induces structural disorder and inferior carbon quality with rapid performance degradation. This work establishes pH-mediated structural control as a powerful strategy for high-performance, resource-conscious, Mn-rich LiMn0.7Fe0.3PO4 cathode materials.
✓ 已验证
DOI
PubMed
高影响因子
Science Advances
·
2026
·Vol. 12
·期 19
·
IF 13.9
Chuan Li,Xiu Hu,Rong Zhang,Shaoce Zhang,Huilin Cui,Qinshun Nian,Yuwei Zhao,Chunyi Zhi
In 1952, the first commercially alkaline Zn||MnO 2 primary battery was developed, which is based on Mn 4+ /Mn 3+ redox reactions (MnO 2 ↔Mn 2 O 3 ). Subsequently, the single-electron (Mn 3+ /Mn 2+ and Mn 7+ /Mn 6+ ) and two-electron (Mn 4+ /Mn 2+ ) redox reactions of Mn compound (Mn-Comp) were achieved in aqueous Zn-based batteries. After that, however, the new Mn multivalent change redox reaction was no longer observed. In this study, we report a neutral superhydrophilic hydrogel electrolyte that activates a Mn 2+ /Mn 7+ conversion reaction (Mn 2+ ↔MnO 4 − ). This advance is attributed to an expanding electrochemical stability window and high Mn 2+ reaction activity. This enables a discharge plateau of ≥2.2 V in aqueous Zn metal batteries. The high reversibility of Mn 2+ /Mn 7+ conversion reactions during cycling was achieved by incorporating chelation groups in the designed hydrogel electrolyte, which effectively stabilizes the MnO 4 − . The aqueous Zn||Mn-Comp battery with a 2.2-V discharge plateau operates stably for ≥360 hours.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Lan Haibo,Wu Zede,Xia Jinghua,Li Qiuyu,Gao Mengdan,Cai Zhuoxiu,Tan Weijing,Liu Minyi,Xu Ziting,Gao Yang,Zhang Li,Zhao Bingxia,Li Yingjia,Liang Yu
Introduction The efficacy of immunotherapy in triple-negative breast cancer (TNBC) is primarily challenged by its inherent low immunogenicity, which is further undermined by the immunosuppressive activity of tumor-associated polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs). The hypoxic microenvironment renders PMN-MDSCs susceptible to ferroptosis and exacerbates immunosuppression. Objectives This study aimed to design a multifunctional nanoplatform comprising Cu/Mn bimetallic metal-organic frameworks decorated with gold (Au) nanozymes (CMAP MOFs) that simultaneously enhances tumor immunogenicity and alleviates immunosuppression. Methods The characteristics of the nanosystem were evaluated using transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and ultraviolet-visible spectrophotometry. In vitro experiments employed Western blotting, immunofluorescence, and flow cytometry to investigate the mechanisms of enhanced immunogenicity and alleviated immunosuppression in 4T1 cells. In vivo experiments evaluated the therapeutic efficacy of the nanosystem in BALB/c mice bearing implanted 4T1 tumors. Results Within tumor cells, the CMAP MOFs undergo GSH-responsive disintegration. The released Cu/Mn ions catalyze Fenton-like reaction to induce tumor cell ferroptosis and mitochondrial DNA damage, activating cGAS-STING pathway, and facilitating CD8 + T cells recruitment. Simultaneously, released Au nanozymes catalyze H 2 O 2 conversion to O 2 , alleviating hypoxia and preventing PMN-MDSCs ferroptosis and associated immunosuppression. While the immunogenicity-enhancing CMP MOFs group increased CD8⁺ T cell infiltration from 21% to 28.3% with 74.1% tumor growth inhibition, the combined immunogenicity enhancement and immunosuppression relief CMAP MOFs group further boosted CD8⁺ T cell infiltration to 32.4% with superior tumor growth inhibition of 81.3%, with IFN-γ and GZMB expression elevated by 2.2-fold and 2.0-fold (CMP MOFs) and 3.4-fold and 3.0-fold (CMAP MOFs) compared to control. This strategy offers a promising approach for enhancing immunotherapy in TNBC patients. Graphical The alternative text for this image may have been generated using AI.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yu Liao,Yaowei Liu,Yang Li,Linjuan Zhang,Jian-Qiang Wang,Sivaprakash Sengodan,Bingbing Niu,Guntae Kim
Carbon capture, utilization, and storage (CCUS) is recognized as a critical pathway for decarbonization, but current approaches are limited by energy-intensive operation and suboptimal conversion efficiency. In this context, the Zn-CO2 system holds immense promise for simultaneous electricity generation, green hydrogen production, and efficient CO2 utilization. However, further improvement of the overall system efficiency hinges on enhancing the hydrogen evolution reaction (HER) in quasi-neutral media. Herein, we report a Mn-doped cobalt phosphide (Mn-CoP/NF) catalyst grown on nickel foam via a facile one-step electrodeposition, designed to promote water dissociation and enhance HER activity in neutral electrolytes. Structural characterizations reveal that Mn doping induces an amorphous transformation with a cauliflower-like morphology, markedly increasing the electrochemical active surface area (ECSA) and exposing abundant active sites. XPS analysis further confirms that Mn functions as an electron donor, generating electron-rich Co/P surfaces that favor optimized adsorption of reaction intermediates. Kinetic analysis demonstrates that the incorporation of oxyphilic Mn substantially lowers the Tafel slope from 158.7 mV dec -1 to 62.0 mV dec -1 , evidencing accelerated water dissociation in the Volmer step. Density functional theory (DFT) calculations reveal that Mn incorporation lowers the water dissociation energy barrier and optimizes the hydrogen adsorption free energy (ΔGH*). Consequently, the Mn-CoP/NF catalyst exhibits outstanding HER activity in saturated KHCO3 solution, with an overpotential of 149.9 mV at 50 mA cm-2 , similar to commercial 1 mg cm-2 Pt/C (146.4 mV). Furthermore, the Zn-CO2 system assembled with Mn-CoP/NF as the HER electrode achieves a maximum current density of 378 mA cm -2 and sustains stable operation for over 300 hours at -100 mA cm-2 .
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2026
·
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.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
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.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）