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.
✓ 已验证
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Zhe Xu,Weilan Zhen,Chengfeng Liu,Jiantong Zhou,Taicheng An
The speciation compatibility of Cu-ligand complexes and catalytic oxidation systems fundamentally governs their decomplexation efficiency, exhibiting pronounced ligand concentration dependence. While contemporary methodologies predominantly focus on stoichiometric Cu(II)-ligand complexes, their efficacy in treating wastewater with ligand excess remains technologically contentious. This study demonstrates the Mn(II)/peroxymonosulfate (PMS) process as a robust solution for the elimination of Cu(II)-ligand complexes even in excessive ligand environments. Using Cu(II)-EDTA as the representative complex, 90% decomplexation was achieved within 1 and 5 min at [EDTA] 0 :[Cu] ratios of 1:1 and 2:1, respectively, surpassing reported decomplexation approaches such as UV/H 2 O 2 , UV/peroxydisulfate (PDS), and Co 2+ /PMS. Mechanistic investigations through oxidation species characterization and product analysis revealed a successive decarboxylation of EDTA by non-radical pathway, i.e., high valence metals and singlet oxygen, enhancing process selectivity while minimizing oxidant consumption ([PMS] 0 :[EDTA] 0 = 30:1). The system exhibits dual mechanistic regimes: (i) instantaneous decomplexation under ligand-deficient conditions via PMS activation by in-situ formed CuO through alkaline precipitation, and (ii) cascade decomplexation for ligand-rich systems involving Mn-Cu synergistic destruction of excessive EDTA prior to CuO-catalyzed degradation of residual ligand. Such synergism is believed to stem from the electron transfer from Cu(II) to Mn(V/VI), forming reactive Cu(III) for decomplexation through intramolecular electron transfer. The Mn(II)/PMS system also exhibited the applicability in treating various Cu(II)-ligand complexes and real wastewater. This work establishes a practical strategy for reliable treatment of industrial wastewater containing non-stoichiometric Cu-ligand complexes.
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
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
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
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.
✓ 已验证
DOI
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
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2026
·
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.
✓ 已验证
DOI
高影响因子
Processes
·
2026
·Vol. 14
·期 11
·1697
·
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.
✓ 已验证
DOI
高影响因子
ACS Nano
·
2026
·
IF 16
Minghao Jin,Muge Gu,Keyu Kong,Wenxuan Fan,Sonu Ng,Yuehao Hu,Zhe Wang,Jiemao Su,Wei-En Yuan,Huiwu Li,Zanjing Zhai
Prosthesis-associated osteolysis (PAO), driven by a self-perpetuating inflammatory-osteoclastogenic cycle, remains a critical challenge following arthroplasty. Current single-target therapies inadequately address the spatiotemporal heterogeneity of pathological microenvironments: ROS overload during the early immune activation phase and low pH in the osteoclastic resorption phase. This study develops bovine serum albumin (BSA)-coated copper–manganese carbonate nanocomposites (CuMnCO3@BSA, CMC) that dynamically coordinate immunosuppressive intervention with osteoclast-specific cuproptosis induction through microenvironment-guided functional switching. In vitro studies demonstrate that at neutral pH, Mn2+-mediated SOD/CAT-like nanozyme activity effectively scavenges ROS and reprograms macrophage metabolism to oxidative phosphorylation, thereby suppressing M1 polarization. During late osteoclast differentiation, acid-triggered carbonate decomposition releases Cu2+, selectively eliminating mature osteoclasts via cuproptosis-mediated mitochondrial lipoylated protein aggregation and TCA cycle collapse. In titanium particle-induced osteolysis models, this dual-functional CMC strategy demonstrates superior therapeutic efficacy to bisphosphonates. This study pioneers a microenvironment-adaptive nanotherapeutic approach, innovatively coupling cuproptosis with immune-metabolic regulation, thereby establishing a novel paradigm for osteolytic disease management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomaterials Advances
·
2026
·
IF 6.7
Jia Chen,Minghui He,Junxiao Li,Yunqi Shen,Xinkun Shen,Min Lai
Excessive oxidative stress and associated inflammation significantly impair bone regeneration around implants. To address this, we developed a novel therapeutic strategy based on metal-polyphenol nanoparticles self-assembled from tannic acid (TA) and manganese ions (Mn 2+ ). These Mn-TA nanoparticles (Mn-TA NPs) were subsequently incorporated into a gelatin methacryloyl (GelMA) hydrogel, which was then applied as a coating onto TiO 2 nanotube (TNT) surfaces by spin coating. The resulting modified titanium was designated as TNT-GelMA@NPs. Surface and interfacial characterization using scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle measurement, spectroscopic ellipsometry and nanoindentation confirmed the successful fabrication of a uniform, adherent hydrogel coating on the TNT surfaces. The coating reduced surface roughness while maintaining hydrophilicity, and achieved sustained Mn 2+ release, as verified via inductively coupled plasma atomic emission spectroscopy (ICP-AES). TNT-GelMA@NPs exhibited potent ROS scavenging capacity, protected mitochondrial membrane potential, and upregulated antioxidant genes. Moreover, it promoted macrophage polarization from pro-inflammatory M1 to anti-inflammatory M2 phenotype, thereby creating a favorable osteoimmune microenvironment. Additionally, it promoted osteogenic differentiation by increasing ALP activity, mineralization, and the expression of osteogenic genes. In a rat femoral defect model, TNT-GelMA@NPs implants reduced oxidative damage and inflammation, while enhancing bone formation, as evidenced by histological staining and micro-CT analysis. This study demonstrates that the Mn-TA NP-reinforced hydrogel coating acts as a multifunctional biointerface with excellent potential for advanced implant surface engineering.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Peipei Huang,Qing Chang,Guodong Jiang,Keru Xiao,Xu Wang
Metal organic frameworks are important Fenton-like materials in environment remediation. Nevertheless, the slow Fe(III)/Fe(II) cycling and low H 2 O 2 utilization limit their application. In this study, we develop the ferrous bimetallic MIL-101(Fe II 3 , Mn), which significantly enhanced catalytic performance (5.8 and 31.4-fold higher phenol removal rate and apparent rate constant, respectively) compared with the original MIL-101(Fe). The mechanisms are fully investigated by XPS, EPR and DFT. The Fe 2+ substitution affords the mixed-valences of Fe(III)/Fe(II) in the frameworks, which serve as stronger sites for H 2 O 2 activation. Mn in MIL-101(Fe II 3 , Mn) can also function as another reaction center to activate H 2 O 2 . Catalysts could coordinate with the π–electrons of pollutants, resulting in the electron transfer from pollutants to MIL-101(Fe II 3 , Mn). Moreover, electrons around Mn atoms tends to transfer to the region of Fe atoms owing to the electronegativity difference, inducing to strengthen the electron-rich Fe micro-region. Therefore, H 2 O 2 was primarily adsorbed onto electron-rich regions where it would be efficiently reduced to •OH, contributing to a higher H 2 O 2 utilization (81.2 %). This study opens new insight into design of Fe-based MOFs as highly efficient Fenton-like catalysts in wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Shuning Chen,Tengfei Ren,Xiaoying Zhang,Zuoyong Zhou,Xia Huang,Xiaoyuan Zhang
Heterogeneous catalytic ozonation (HCO) is attractive for water decontamination and catalyst is a core element. However, it is difficult to maintain high efficiency and stability of catalysts under stern conditions. In this study, we proposed Mn-loaded C-SiO 2 -Framework (Mn-CSF) which contained stable silica core and robust carbon shell for efficient catalytic ozonation. The pseudo-first-order kinetic rate constant for oxalic acid removal of Mn-CSF catalytic ozonation was 160 % and 875 % higher than those of Mn-SiO 2 and pristine CSF, respectively. Mn-CSF was also proven effective in gasification wastewater treatment , where the COD was decreased to 46 mg·L −1 , 37 % lower than that of Mn-SiO 2 . These results indicated that the graphitization carbon layer and Mn significantly enhanced the activity of the catalyst. Furthermore, a fulvic-like component and a protein-like component were recognized through 3D-EEM in coal gasification wastewater. It was proven that Mn-CSF catalytic ozonation exhibited higher fulvic-like component and protein-like component removal compared with ozonation. Moreover, O 2 − and 1 O 2 were identified to be responsible for organic degradation in this research. Sufficient external specific surface area and porous structure were important for complex wastewater treatment. Specifically, external specific surface area could enhance the degradation of macromolecular organics while porous structures were vital for smaller molecular pollutant removal . The results highlighted that Mn-CSF was a promising HCO catalyst for advanced wastewater treatment, and this study provided evidence of relationship between structure of catalysts and HCO efficiency.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）