ACS Sustainable Chemistry & Engineering
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2026
·
IF 7.6
Xi Zhang,Sheng Cao,Bing Wu,Haonan Zheng,Xianjun Zhu,Kunxiang Liu,Zhaoyu Zhai,Zhikai Zhou,Shuangying Wei,Zdeněk Sofer,Jing Xia,Yanqing Fu,Qiliang Wei,Weiyou Yang,Zhao Liang,Ruizhi Yu
Li-rich Mn-based layered oxides (LRMOs) rely on lattice oxygen redox to achieve high energy density, but their high-temperature performance is limited by thermally accelerated oxygen loss and interfacial degradation. Here, it is verified that trace-level entropy-mediated doping (Mg, Cu, Ti, and La) exerts a dual role in LRMOs. At low doping levels, it stabilizes the bulk layered framework and interfacial chemistry via synergistic lattice regulation and transition-metal–oxygen (TM–O) covalency tuning. However, excessive doping suppresses lattice-oxygen redox activity and exacerbates electrochemical polarization, ultimately compromising reversible capacity and reaction kinetics. At an optimal dopant level of 0.25 at. % relative to total transition-metal content, the entropy-mediated doping suppresses Li/Ni disorder, expands lattice spacing, and enhances structural durability without sacrificing oxygen-redox reversibility. Consequently, Li1.2Mn0.5985Ni0.1995Mg0.0005Cu0.0005Ti0.0005La0.0005O2 delivers a high discharge capacity of 274.99 mAh g–1 at 0.1 C and sustains 227.18 mAh g–1 at 1 C. More importantly, it achieves 84.57% capacity retention after 100 cycles at 55 °C, substantially surpassing the unmodified LRMOs (58.10%). This work establishes trace-level entropy-mediated regulation of TM–O chemistry as a practical strategy for thermally robust, high-energy oxygen-redox cathodes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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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
FUEL
·
2026
·
IF 7.8
Xin Li,Jisen Liu,Shengli Niu,Yie Hua Tan,Huaji Zhang,Yue Zheng,Xiaobin Sun,Kemeng Li,Yujie Wei
The coexistence of free fatty acids (FFAs) and moisture in biodiesel feedstock oils poses major limitations for conventional basic catalytic systems, which motivates the development of heterogeneous catalysts capable of promoting transesterification and esterification. In this work, a Mn-doped perovskite catalyst, BiFe 0.7 Mn 0.3 O 3 , was synthesized using BiFeO 3 as the matrix for biodiesel preparation. Mn doping disrupted the lattice charge balance of BiFeO 3 , which induced lattice distortion and promoted the formation of oxygen vacancies. These structural changes regulated the surface electronic environment and optimized the distribution of acidic-basic active sites. Under optimized reaction conditions of 140 °C, 3.5 h, methanol-to-oil molar ratio of 14:1, and catalyst amount of 3.0 wt%, BiFe 0.7 Mn 0.3 O 3 achieved a biodiesel yield of 95.20%. Even in reaction systems containing 30 wt% FFAs or 8 wt% moisture, the biodiesel yield remained above 80.00%, which confirms its strong resistance to FFAs and moisture-containing feedstocks. Mechanistic analysis reveals that Mn doping-induced oxygen vacancies create an optimized surface acid-base environment that enables the simultaneous promotion of transesterification and esterification reactions. Moreover, BiFe 0.7 Mn 0.3 O 3 exhibits favorable magnetic responsiveness, which enables rapid separation and recovery under an external magnetic field after reaction. Combined with the low synthesis cost and recyclability, this catalyst shows strong potential for sustainable biodiesel preparation from low-quality feedstock oils.
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Advanced Healthcare Materials
·
2026
·
IF 11
Xiaoling Liu,Run Huang,Ling Zou,Lu Yang,Yonghui Wu,Dandan Li,Jinbao Li,Jian He,Xiaochao Yang
Oxidative stress caused by the excessive accumulation of reactive oxygen species (ROS) plays a critical role in the development of acute respiratory distress syndrome (ARDS). Current antioxidant therapies using organic ROS scavengers fail in decreasing mortality due to the low ROS scavenging activity and fast metabolic rate. Inorganic ROS scavenging nanoparticles provide potential options for investigating ARDS antioxidant therapy. However, previous studies mainly focus on the ROS scavenging activity of these nanoparticles, while their capability to modulate the endogenous antioxidant system remains largely unexplored. Herein, mesoporous Ce–Mn–O bimetallic oxide nanoparticles (NP CeMn ) are designed and synthesized to activate the endogenous antioxidant system for ARDS therapy. Morphologically similar ceria nanoparticles (NP Ce ) and manganese oxide nanoparticles (NP Mn ) are used for comparison. In vivo and in vitro results demonstrate that NP Ce and NP Mn can promote the expression of SOD1 and SOD2, respectively, while NP CeMn can promote the expression of both SOD1 and SOD2. Mechanism studies establish a Keap1/Nrf2/SOD axis through which NP CeMn acts to activate the endogenous antioxidant system. Based on this property, NP CeMn can effectively alleviate oxidative stress and inflammation in the lung of the murine ARDS model. These findings suggest that activating the endogenous antioxidant system via inorganic nanoparticles is a promising ARDS therapeutic strategy.
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PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
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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
Materials Today Chemistry
·
2026
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IF 7.4
Tengxin Ren,Lei Yang,Zicheng Li,Zhiping Wu,Na Liu,Caixia Zhu,Minghui Tan,Lishu Shao,Hao Chen,Linlin Zhao,Noritatsu Tsubaki
5-Hydroxymethylfurfural (HMF) is an important biomass-based platform molecule, its oxidation product, 2,5-furandicarboxylic acid (FDCA), can be used to produce polyethylene furanoate (PEF) that replace petroleum-based compound polyethylene terephthalate (PET). At present, the development of low-cost and efficient catalytic systems remained a significant challenges. In this work, ZSM-5 and SBA-15 zeolites were used as a composite support with micro-mesopores structure through a simple and efficient mechanical treatment, and then Co–Mn bimetallic sites were loaded on the composites by co-precipitation methods. These catalysts exhibited showed different morphology, distribution of active components, and micro-mesopores structure by adjusting Co/Mn molar ratio, loading amounts and calcination temperature. The effects of pore structure, metal composition and distribution, and electronic structure on the catalytic conversion of HMF were studied. Specially, the valence state and content of Co and Mn active species had a significant impact on the catalytic performance of HMF, and we found that the content of Mn 4+ directly affected the selectivity of FDCA, and with a positive correlation between them into a certain extent. Under optimized conditions, 15Co 2 Mn-ZS-21-400 catalyst achieved 92.2% HMF conversion and 81.7% FDCA yield. Its order micro-mesoporous structures provided rapid reaction kinetics, and the synergistic effect of the bimetallic sites enhanced the catalytic activity. Mechanism study revealed that the Co and Mn species were coordinated through electron transfer during the redox process, thereby enabling the cyclic transformation between Co 3+ and Co 2+ , as well as Mn 4+ and Mn 3+ , and then gradually oxidize HMF into FDCA. In addition, 15Co 2 Mn-ZS-21-400 maintained excellent activity after five cycles, the conversion and yield kept at 89.2% and 79.1%, respectively. This work provided a new strategy for developing highly selective and stable thermal catalysts for HMF to FDCA.
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高影响因子
Processes
·
2026
·Vol. 14
·期 11
·1697
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IF 3.4
Waqas Ahmed,Yunting Wang,Sehrish Ali,Fengyue Qin,Babar Usman,Weidong Li,Sajid Mehmood
Heavy metal pollution in water threatens ecosystems and human health, necessitating efficient, low-cost, and sustainable remediation technologies. A manganese-modified bamboo biochar (Mn-BC) was synthesized via impregnation of raw biochar in KMnO4followed by pyrolysis at 500 °C, and its adsorption ability was systematically evaluated for Pb(II) and Cr(VI) removal through batch adsorption experiments investigating the effects of solution pH (2–9), adsorbent dosage (0.1–0.9 g in 20 mL), contact time (0–50 min), initial metal concentration (20–100 mg L−1), and temperature (25–50 °C). SEM/TEM-EDS and XRD confirmed successful Mn incorporation as MnOxphases, while textural analysis showed improved porosity after modification, with the BET surface area and total pore volume increasing from 77.28 m2g−1to 123.51 m2g−1and from 0.041 cm3g−1to 0.063 cm3g−1, respectively. Batch adsorption experiments demonstrated strong pH dependence, with optimum removal at pH 8 for Pb(II) (91.87%) and pH 5 for Cr(VI) (88.2%). Adsorption was rapid within the first 30 min and reached equilibrium. A pseudo-second-order (PSO) model provided the best kinetic description (R2= 0.99) with calculated qevalues of 19.98 mg g−1for Pb(II) and 19.13 mg g−1for Cr(VI). Isotherm analysis yielded Langmuir monolayer capacities of 37.24 mg g−1(Pb(II)) and 16.39 mg g−1(Cr(VI)), with Pb(II) better described by Freundlich behavior and Cr(VI) closely fitting Langmuir assumptions. Thermodynamic results indicated endothermic adsorption (ΔH° = 41.98 and 29.67 kJ mol−1for Pb(II) and Cr(VI)) and increased interfacial randomness (ΔS°), with adsorption becoming more favorable at higher temperature (maximum removal at 50 °C: 93.21% Pb(II), 87.37% Cr(VI)). Mn-BC maintained >60% efficiency after five regeneration cycles. Mechanistically, Pb(II) removal was primarily governed by ion exchange and surface complexation, whereas Cr(VI) removal involved electrostatic attraction, partial reduction to Cr(III), and subsequent complexation on oxygenated and Mn–O sites. Overall, these findings demonstrate that Mn-BC is a practical, reusable, and competitive adsorbent for the efficient removal of Pb(II) and Cr(VI) from wastewater, supporting sustainable water treatment strategies.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Muhammad Rafiq,Sami Ur Rahman,Wenjuan Xu,Shehna Farooq,Jiangyan Dang,Muhammad Saad,Omme Habiba Abbasi,Adel Al-Salihy,Wenliang Li,Jingping Zhang
Fe@CoP-NSs/CP is synthesized and shows superior OER activity (272 mV at 10 mA cm⁻²). • DFT reveals Fe doping optimizes the d -band center (-1.92 eV) and adsorption energetics of Fe@CoP-NSs/CP. • DHS-OPM on Fe-Co sites of Fe@CoP-NSs/CP achieves a low overpotential of 0.35 V, outperforming AEM. • Fe@CoP-NSs/CP exhibits excellent stability over 30 h tested by chronoamperometry. • Machine learning identifies TM-OOH* and RDS as key predictors of catalytic efficiency (ROC-AUC up to 0.99). The oxygen evolution reaction (OER) remains a critical bottleneck for efficient oxygen production via water splitting due to its sluggish kinetics and high overpotential. Herein, we systematically investigated the OER mechanism on 3d transition metal-doped (Iron, Nickle, and Manganese) and pristine cobalt phosphide nanosheet carbon paper supported (Fe@CoP-NSs/CP, Ni@CoP-NSs/CP, Mn@CoP-NSs/CP, and CoP-NSs/CP) through a density functional theory (DFT) and experimental approach. The DFT calculations reveal that doping modulates the electronic structure of Fe@CoP-NSs/CP among the investigated systems exhibiting a d-band center closest to the Fermi level (-1.92 eV), leading to optimized adsorption energetics for key intermediates. Mechanistic mapping identifies the Dual Hetero-Site Oxide Path Mechanism (DHS-OPM) as the dominant pathway. In this mechanism, Fe-Co bimetallic sites achieve a remarkably low overpotential of 0.35 V, significantly outperforming the Adsorbate Evolution Mechanism (AEM). Experimentally, Fe@CoP-NSs/CP shows superior OER activity with an overpotential of 272 mV at 10 mA cm −2 and a Tafel slope of 47.4 mV dec −1 , with excellent stability over 30 h. Furthermore, supervised machine learning identifies TM-OOH* and rate-determining step (RDS) energies as the key predictors of catalytic efficiency, achieving ROC-AUC values up to 0.99. This work establishes a DFT-driven mechanistic framework, demonstrating that Fe@CoP-NSs/CP provides a highly efficient and durable pathway for OER. Download: Download high-res image (185KB) Download: Download full-size image
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高影响因子
POWDER TECHNOLOGY
·
2025
·
IF 4.6
Junlei Wang,Shilong Li,Wen Du,Yunfei Xu,Jinyu Li,Kun Wang
The conventional co-precipitation wet chemical method for preparing LiNi x Co y Mn 1-x-y O 2 (NCM) cathode materials for lithium-ion batteries starts with the synthesis of Ni-Co-Mn hydroxide precursors, which are then calcined at high temperatures and thermally decomposed into oxides , followed solid-state reacting with lithium sources to obtain the NCM cathode materials. However, this hydroxide precursor route has several drawbacks, including multiple processing steps, pollution from strong bases, significant generation of liquid waste, and high energy consumption. In the current study, the Ni-Co-Mn oxide precursor route is explored via flame-assisted spray pyrolysis (FASP), which offers prompt reaction time, very few steps, and equipment without producing liquid wastes. Specifically, two types of oxide precursors, NiCoMnO 4 and Ni 0.8 Co 0.1 Mn 0.1 O 1.1 , were synthesized by FASP utilizing the co-flow diffusion flame burner system, which were subsequently mixed with cost-effective lithium carbonate (Li 2 CO 3 ) and subjected to calcination , resulting in the preparation of two types ternary NCM cathode materials, NCM111 and NCM811. Characterization results demonstrate that NiCoMnO 4 features a spherical mesoporous structure with a smooth surface, and a spinel-dominated composite oxide structure, whereas Ni 0.8 Co 0.1 Mn 0.1 O 1.1 exhibits a rough particle surface with a predominant rock salt phase NiO structure. Electrochemical test results show that NCM111 and NCM811 cathode materials exhibited excellent cycling stability, showing capacity retention of 88.5 % and 87.1 %, respectively, after 100 cycles, outperforming that of commercial counterparts and conventional synthesis approaches documented in literature. Thus, the Ni-Co-Mn oxide precursor route via FASP establishes a viable approach for preparing ternary NCM cathode materials
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Hongchuan Jiang,Xiang Li,Guodong Zhang,Cai Liang
Solar-driven calcium-looping offers a promising pathway for efficient storage and utilization of concentrated solar energy. However, the large-scale application of calcium-based heat carriers is hindered by low solar absorptance, poor sintering resistance, and slow reaction kinetics. Moreover, the energy conversion characteristics and particle behavior under direct irradiation remain poorly understood. In this study, Mn-Zr co-doped CaO composite particles were synthesized via an extrusion-spheronization method, achieving high absorptance, strong sintering resistance, and rapid reaction kinetics. Specifically, the co-doping of Mn and Zr significantly enhances absorptance to 67.7% while effectively reduces cracking. The stable framework of CaMnO 3 and CaZrO 3 maintains abundant mesoporous channels and suppresses sintering. The composite particles exhibit outstanding cycling stability, maintaining an energy storage density of 1148 kJ/kg after 40 cycles with only 22.9% degradation, far outperforming pure CaO materials (64.9% degradation after 20 cycles). Direct irradiation experiments confirm their high solar-thermal conversion efficiency, with particle temperature within the light spot reaching 1600 °C in 3 s. The irradiation-induced particle inhomogeneous sintering mechanism was preliminary proposed. Meanwhile, the effect of non-uniform irradiation on energy storage characteristics and particle behavior is revealed. Non-uniform irradiation led to localized hotspots and increased thermal stress, which aggravated particle breakage and sintering within the light spot.
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高影响因子
Energy & Environmental Materials
·
2026
·
IF 14.1
Yuyao Ma,Sidong Zhang,Wei Hu,Wenqing Wei,Yutao Li
Li-rich Mn-based layered oxides are recognized as cathode materials with bright prospects for rechargeable lithium-ion batteries (LIBs), primarily attributed to their low cost, high capacity output, and high operating voltage. However, their practical application is restricted by inadequate initial Coulombic efficiency (ICE) and unstable electrode/electrolyte interfaces, which result in high interfacial impedance, large overpotential, irreversible capacity fading, and inferior cycling stability. In this work, Li 3/8 Sr 7/16 Ta 3/4 Zr 1/4 O 3 (LSTZ), a fast Li + -ion conductor, is introduced as a surface coating. The LSTZ layer effectively suppresses oxygen release and electrolyte corrosion, thereby mitigating structural degradation and voltage decay while improving interfacial stability. Moreover, LSTZ provides fast Li + transport pathways, facilitating Li + diffusion, and reducing polarization, which significantly enhances rate capability. At 1 C and 25 °C, the LSTZ-coated cathode delivers a reversible capacity of 178.5 mAh g −1 with 94.4% retention after 120 cycles. Even at 0.3 C and 45 °C, it maintains 209.7 mAh g −1 with 95.7% retention after 300 cycles, demonstrating excellent thermal stability.
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高影响因子
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
危险品化学品经营许可证（带存储）