ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Panpan Zhang,Yongkang Meng,Zihan Xu,Mikaiergu Sulitan,Chunsheng Lu,Yangyang Yang,Xiaowei Li,Yu Zhou,Yunjian Liu
The 2H-MoS 2 /N-doped carbon (2H-MoS 2 /NC) composite has demonstrated great promise as an anode material for sodium-ion batteries (SIBs); however, its rate performance and cycling capability are still limited by the intrinsically poor electronic conductivity and the scarcity of in-plane active sites in 2H-MoS 2 . In this paper, Mn doping is applied as an effective strategy to overcome these limitations. A Mn-doped 2H-MoS 2 /NC (Mn-2H-MoS 2 /NC) composite is successfully synthesized via a simple one-step hydrothermal-calcination process. Electrochemical evaluations show that the Mn-2H-MoS 2 /NC electrode delivers a reversible specific capacity of 301.42 mAh g –1 after 150 cycles at a current density of 1 A g –1 . Especially, even at a high current density of 5 A g –1 , a capacity of 131.66 mAh g –1 is retained after 500 cycles. This performance far exceeds that of the pristine 2H-MoS 2 /NC anode (51.12 mAh g –1 ). Experimental and theoretical analyses reveal that Mn doping not only serves as an effective microstructural regulator (expanding the interlayer spacing and reducing the stacking layer of MoS 2 ) but also intrinsically transforms MoS 2 from a semiconductor into a conductor while increasing the density of active sites within and on the MoS 2 lattice. These synergistic effects facilitate rapid electron transport, accelerate Na + adsorption and intercalation, and enhance the reversibility of the conversion reaction. Consequently, Na + storage kinetics is significantly improved, leading to the superior cycling stability and rate performance of the Mn-2H-MoS 2 /NC electrode.
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·Vol. 49
·期 3
·5154-5160
·
IF 5.532
Xiaoyang Wang,Xiaoqing Si,Jianwei Gao,Bo Yang,Mingshen Li,Chun Li,Junlei Qi,Jian Cao
Reactive air brazing (RAB) holds great potential for joining BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3-δ (BZCYYb) electrolytes with stainless steel interconnects. But this technique inevitably results in many brittle compounds along the BZCYYb interface and excessive oxidation at the steel interface. Herein, we successfully address the above issues by introducing the Mn–Co spinel coating. The coating prevents the reaction of Cr with the electrolyte and reduces brittle compounds along the BZCYYb interface, thereby elevating the joint strength by 31%. Also, it completely separates CuO and the stainless steel, thus inhibiting the excessive oxidation on the steel surface. Furthermore, the coating remains dense in both oxidizing and reducing atmospheres at 600 for 300 h, significantly enhancing the long-term stability of joints.
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高影响因子
ANALYTICAL CHEMISTRY
·
2013
·
IF 5.695
He-Fang Wang,Ye-Yu Wu,Xiu-Ping Yan
A room-temperature phosphorescence (RTP) strategy was developed for direct, additive-free discrimination of catechol from resorcinol and hydroquinone based on sodium tripolyphosphate capped Mn-doped ZnS quantum dots (STPP-Mn-ZnS QDs). The RTP response of STPP-Mn-ZnS QDs to the three isomers was pH-dependent, and the greatest difference in the RTP response to the isomers was observed at pH 8.0: catechol enhanced the RTP intensity of the QDs, while resorcinol and hydroquinone had little effect on the RTP intensity of the QDs. The enhanced RTP intensity of 1 μM catechol was not affected by the coexistence of 30 μM resorcinol and 50 μM hydroquinone at pH 8.0. The detection limit of this RTP method was 53 nM catechol, and the precision was 3.2% (relative standard deviation) for five replicate detections of 1 μM catechol. The discrimination mechanism was ascribed to the weak bonded ligand of STPP-Mn-ZnS QDs and the different interaction between the three isomers and STPP-Mn-ZnS QDs. The strong binding of catechol to Zn resulted in the extraction of Zn from the surface of STPP-Mn-ZnS QDs and the generation of holes that were trapped by Mn2+ to form Mn3+. Catechol also promoted the reduction of Mn3+ into Mn2+ excited state, thus ultimately inducing the enhanced RTP response of STPP-Mn-ZnS QDs.
研究领域:
分析化学
·
纳米材料
·
发光传感器
·
环境监测
·
化学传感
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高影响因子
ACS Catalysis
·
2023
·
IF 12.9
Xiaolong Liu,Yang Zou,Xue Li,Tieyao Xu,Wanglai Cen,Bin Li,Tingyu Zhu
Bimetallic catalysts Pt–M/Ti were prepared by introducing various dopants (M = Mn, Fe, Co, Cu, Ce, Mo) into Pt/Ti with ultralow loadings (0.5 wt % M) and compared in CO oxidation in the presence of H2O and SO2. Among these catalysts, Pt–0.5Mn/Ti contributed the highest oxidation efficiency and strongest sulfur resistance. Further improvement of Mn contents led to the decrease of CO conversion. It was indicated that the introduction of appropriate Mn species enhanced the active oxygen supplying ability of the catalyst, thus improving the reaction activity. The CO oxidation performance of the catalyst was improved through the reaction between *OH from H2O dissociation and CO. The deposition of S on the Pt–0.5Mn/Ti surface did not increase with time extension. Theoretical calculation results revealed that cleavage of S–O–Mn species could be facilitated by Pt, and the SO2 adsorption energy calculations demonstrated that SO2 was more easily adsorbed on Pt/Ti than Pt–0.5Mn/Ti, which was very consistent with its sulfur resistance. In situ DRIFT studies at 260 °C revealed that the introduction of SO2 onto Pt–0.5Mn/Ti showed little change for CO adsorption on different Pt species, while Pt/Ti showed an apparent decrease of Pt0–CO. 18O isotopic experiments in the presence of H218O and SO2 were systematically designed to accurately quantify the CO2 composition including C16O16O, C16O18O, and C18O18O. Accordingly, the reaction mechanism for Pt–0.5Mn/Ti catalyzed CO oxidation consisting of four pathways was proposed.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Jia Zhao,Heng Zhang,Mengfan Luo,Hongyu Zhou,Zehua Wang,Jialong Yin,Chuanshu He,Peng Zhou,Jing Zhang,Bo Lai
Ferrate (Fe(VI)) activation by Mn(II) has been proven as a powerful technology due to the high catalytic activity of Mn(II) and the generation of multiple intermediates. However, the reactivity and stability of these intermediates greatly differ, thus necessitating the precise regulation of redox pathways towards the generation of the most desirable intermediates. In this study, we utilized ligand engineering to finely tune the redox pathways between Fe(VI) and Mn(II). Mn(II) complexing with ethylenediaminetetraacetic acid (EDTA) and nitrotriacetic acid (NTA) switched the redox pathways from generating Mn(IV) to more robust intermediates and enhanced the decontamination ability of Fe(VI). Ligand-to-metal charge transfer promoted the electron migration from Mn(II) complexes to Fe(VI), generating Fe(V) and Mn(III) intermediates. Then, complexing regulated the transformation of Mn(III) to generate different reactive species. Specifically, Mn(II)-EDTA activated Fe(VI) through Fe(IV)/Fe(V) and Mn(V), whereas the Fe(VI)-Mn(II)-NTA system relied on Mn(VII). Owing to the weaker chelating effect of NTA, unstable Mn(III)-NTA was successively oxidized via Mn(V) to Mn(VII). In contrast, the stronger stability of EDTA suppressed the excessive oxidation of Mn(V)-EDTA, boosting pollutant interception of reactive species. Accordingly, the Fe(VI)-Mn(II)-EDTA process delivered stronger activation and wider applicability, diminishing contaminant toxicity and resisting background interference. This study provides valuable insights into Fe(VI) activation induced by transition metal complexes and serves as a reference for selecting efficient strategies to avoid excessive consumption of oxidative capacity.
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高影响因子
ENERGY & FUELS
·
2026
·Vol. 40
·期 34
·19184-19193
·
IF 6
Ma Yuhao,Zhang Lei,Jiang Minkang,Qing Shihong,Liu Hongyu,Wang Hao,Wang Liping
Lithium-rich manganese-based (LRM) cathode materials
have attracted
considerable attention for next-generation lithium-ion batteries owing
to their superior energy density. However, their cycling stability
in conventional electrolytes is severely challenged by the high operating
voltage (4.8 V vs. Li/Li + ), particularly under fast-charging
and low-temperature conditions. To overcome this mismatch, we construct
a steric hindrance-guided electrolyte design strategy to tune the
solvation structure. By systematically increasing the steric hindrance
of carboxylic ester solvents, ethyl trimethyl acetate is ultimately
identified to effectively weaken the Li + -solvent interactions.
The resulting anion-involved structure enhances Li + transport
kinetics while inducing a stable cathode-electrolyte interphase. With
this steric hindrance-induced low-temperature electrolyte, the LRM
cathode delivers exceptional fast-charging durability (1500 cycles
at 3C, RT) and an extended low-temperature cycle life (1000 cycles
at −20 ° C, 0.33C). This work validates molecular-level
steric hindrance tuning as an effective strategy to unlock the extreme-condition
performance of high-energy-density LRM cathodes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Peixin Zhu,Yi Lu,Mengyao Xiao,Siyang Li,Chun He,Shuanghong Tian
Active MnO x location (inside MCM-41 pores vs. external surface) was precisely regulated. • Remarkable ozone oversolubility phenomenon within nanoconfined water was discovered. • Nanoconfinement effect triggered intrinsic inversion of reaction mechanism. • MnO x /C/MCM-41 nanoreactors perform excellently for complex wastewater treatment. Catalytic ozonation is promising for emerging contaminants (ECs) abatement but hindered by intrinsic bottlenecks: low O 3 solubility and catalytic efficiency. Herein, a series of xMn/C/M41 nanoreactors were fabricated via a two-step ligand-adsorption and metal-anchoring strategy. After pyrolysis, the optimized 3.3Mn/C/M41 nanoreactors confined ultra-small (~2 nm) mixed-valent MnO x nanoclusters and carbon within the mesopores of MCM-41, while s-3.3Mn/C/M41 (simultaneous ligand-metal complex adsorption) has 5–10 nm Mn 3 O 4 nanoparticles on the surface. 3.3Mn/C/M41 showed a 6.1 × 10 −2 min −1 sulfamethoxazole reaction rate (1.9 times that of s-3.3Mn/C/M41), > 93% removal of three other ECs, along with robust pH adaptability (3.5–10.5), matrix resistance and cycling stability. The excellent performance stems from the mesoporous confinement effects: 300-fold ozone oversolubility, rapid contaminant enrichment, and highly active MnO x nanoclusters with numerous undercoordinated Mn, oxygen vacancies, and Mn N motifs. Experimental and theoretical calculations demonstrate that the catalytic mechanism transforms from a hydroxyl radical (for s-3.3Mn/C/M41) to non-radical of electron transfer and 1 O 2 . This work provides a novel strategy to address the intrinsic bottlenecks of catalytic ozonation, and offers a promising platform for efficient remediation of emerging contaminants in complex aquatic environments. Download: Download high-res image (166KB) Download: Download full-size image
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DESALINATION
·
2026
·
IF 9.9
Sehria Zia,Muhammad Kashif,Haojie Ge,Yafei Guo,Tianlong Deng
Mn-Co/Al-LDH enables efficient lithium capturing from Salt Lake Brines. • Fiber adsorbent exhibits excellent Li + selectivity, mechanical stability and durability. • PVDF@Mn-Co/Al-LDH design as fiber functionalization via wet spinning. • Dynamic uptake capacity of Li + 14.94 ± 1.23 mg·g −1 from Da-Qaidam Salt Lake. Lithium‑aluminum layered double hydroxides (LiAl-LDH) have been successfully used on a commercial scale to extract lithium from salt lake brine, their uncertain extraction procedure and inadequate Li + adsorption ability prevent further development of their uses. High selectivity of Li + has been achieved by the LDHs adsorption from high Mg/Li ratio salt lake brine, but zinc and titanium-based LDH adsorbents are unstable in acidic environments and pose environmental hazards. In this study, a novel trimetallic-based PVDF@Mn-Co/Al-LDH fibrous composite material with tunable properties is compared to bimetallic-LDHs. Density Functional Theory (DFT) is used to optimize the composite design and adsorption sites calculations. To approach the industrial application of Mn-Co/Al-LDH powder, it was further fabricated into porous nature fiber by wet spinning technology with cost effective PVDF form as strong binder with hydrophilicity exhibited Li + maximum adsorption capacity by 50% Mn-Co/Al-LDH fiber composition of 16.73 ± 1.02 mg.g −1 from Li + brine and the dynamic adsorption capacity is 14.94 ± 1.23 mg·g −1 with a 93% elution rate and 4–5% dissolution rate of Mn/Co ions. This synthetic fibrous composite adsorbent highlights a promising approach for evaluating LDH's potential in lithium extraction from rich‑lithium high Mg/Li ratio brine resources, due to its superior selectivity, adsorption/desorption performance and cyclic stability. Download: Download high-res image (139KB) Download: Download full-size image
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TETRAHEDRON
·
2026
·
IF 2.1
Zhi Luo,Jialei Gao,Enqi Bai,Weiwei Liu
A bis(NHC)Mn-catalyzed N-alkylation method for phosphinic amide synthesis has been developed in this work. By utilizing the borrowing hydrogen/hydrogen autotransfer (BH/HA) process, 24 examples with good to excellent yields have been obtained. This method has been demonstrated to be versatile and efficient, enabling new syntheses of bioactive molecules and functional materials, as well as the conversion of simple alcohols into complex organics.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuhao Yuan,Linya Zeng,Lun Yuan,Qingsu Cheng,Yibo Chen,Panyu Li,Liming Ge,Yandong Mu,Changdao Mu,Zhilang Xu,Defu Li
The repair of irregular periodontal bone defects remains a formidable clinical challenge due to the complex oral microenvironment, which demands that therapeutic materials integrate early antibacterial and anti-inflammatory effects with sustained osteogenic support. Herein, we present an injectable multifunctional double-cross-linked hydrogel (GGCM) based on gelatin and chondroitin sulfate (CS), incorporating Mg/Mn-based nanozymes (MPM NZs) for photothermal therapy of periodontitis. MPM NZs were first synthesized via chemical deposition of nano-MnO2 onto mesoporous MgO nanoparticles and subsequently incorporated into a dual-cross-linked network formed by glycidyl methacrylate-modified gelatin and oxidized chondroitin sulfate (OCS) through sequential Schiff base and photopolymerization reactions. The resulting GGCM hydrogel exhibited a favorable microporous architecture, robust physicochemical properties, and excellent injectability to fill irregular periodontal pockets. Notably, MPM NZs endowed the hydrogel with potent photothermal antibacterial activity (>95%), superoxide dismutase (SOD)- and catalase (CAT)-mimetic activities for reactive oxygen species (ROS) scavenging, and the sustained release of bioactive Mg2+ and Mn2+ ions for immunomodulation and osteogenesis. Importantly, GGCM enables a time-sequential regenerative therapeutic cascade comprising rapid periodontal pathogen elimination upon NIR irradiation, subsequent anti-inflammatory immunomodulation via M2 macrophage polarization, and continuous osteogenic promotion and alveolar bone resorption reduction. Collectively, this multifunction-integrated MPM NZ-enhanced double-cross-linked hydrogel exhibits promising potential for periodontal bone regeneration, positioning it as a highly attractive photothermal therapeutic strategy for periodontitis and even other complex infectious bone defects.
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DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Rongsen Wang,Yongda Tian,Shuai Wang,Xin Ma,Zhanfang Cao
Lithium manganese iron phosphate (LMFP) has emerged as a promising stable and safe cathode material for power batteries and energy storage systems, succeeding the widely commercialized lithium iron phosphate (LFP). However, its practical deployment is hindered by the intrinsic Jahn–Teller effect and sluggish lithium-ion diffusion kinetics. Herein, we design a core–shell precursor with a manganese concentration gradient to fabricate Al3+-doped LMFP with a β-LiAlO2 coating layer. X-ray diffraction (XRD) and cyclic voltammetry (CV) characterizations confirm that the microelectric field induced by the manganese gradient suppresses the Jahn–Teller distortion, while the Al(LMFP)–O–Al(β-LiAlO2) interfacial structure accelerates lithium-ion diffusion. The optimized material with 2 mol % Al3+ doping and 10 mol % β-LiAlO2 coating delivers a superior specific capacity of 115.4 mAh·g–1 at 10 C, with an ultrahigh capacity retention of 99.5% after 500 cycles, markedly outperforming previously reported LMFP cathodes (typically ∼90 mAh·g–1 at 10 C and ∼90% retention after 500 cycles). Notably, this Al-based modification strategy is directly applicable to recycling Al-containing spent LFP black mass, and the recycled LMFP delivers 127.98 mAh·g–1 at 10 C with 92% capacity retention after 150 cycles. This work provides a facile, scalable technical route for both high-performance LMFP fabrication and sustainable recycling of Al-containing LFP battery wastes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Xingbo Qi,Lei Ni,Ziyan He,Xu Sun,Hejie Lu,Haiqiang Li,Ruixi Meng,Maosen Fu,Xiao Ma
Cobalt-free, nickel-rich layered oxide cathode material LiNixMn1-xO2 (NM) has attracted much attention due to its high specific capacity and low cost. However, cobalt-free cathode materials have more serious problems such as Li/Ni disorder and structural degradation compared to ternary LiNixCOyMn1-x-yO2 (x ≥0.5, NCM) cathodes. To address these challenges, LiNi0.6Mn0.4O2 (NM64) and a series of Mo-doped Li(Ni0.6Mn0.4)(1-x)MoxO2 (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) cathode materials were designed and prepared by high-temperature solid-phase method, and the effect of Mo doping on the structure and electrochemical performance of NM64 cathodes was systematically investigated. Mo doping not only suppresses Li/Ni mixing and enlarges interlayer spacing but also effectively inhibits primary particle overgrowth, resulting in refined particle morphology that enhances structural stability and Li+ transport kinetics. Consequently, the Mo-doped NMM cathodes exhibit more stable interface with significantly suppressed side reactions. Li(Ni0.6Mn0.4)0.98Mo0.02O2 cathode exhibited superior capacity retention of 86.83% after 100 cycles at 1.0 C (at 25℃ and 2.8-4.3 V), surpassing the NM matrix by 8.98% and demonstrating the remarkable cycling stability improvement. This work elucidates the structural and interfacial stabilization mechanisms induced by high-valent Mo doping, providing an effective approach to developing high-performance Co-free layered oxide cathodes.
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高影响因子
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