Polymers
·
2025
·Vol. 17
·期 5
·625
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IF 4.9
Yunpeng Zhang,Danni Liu,Yaoqi Wang,Qi Sun,Dong Mei,Xiaoling Wang,Yan Su,Siyu Liu,Chunying Cui,Shuang Zhang
Atherosclerosis (AS) is an important causative agent of cardiovascular diseases, and the occurrence and development of AS is accompanied by oxidative stress, so antioxidant therapy has become one of the strategies for the treatment of AS. This study aimed to design and construct an apolipoprotein ApoA1-modified inorganic–organic composite nanosystem for AS therapy, in which ApoA1 was modified onto carboxylated CeO2/Mn3O4by covalent bonding, resulting in an inorganic–organic nanocomplex with a structure similar to that of high-density lipoprotein. The nanocomplex could effectively deliver the antioxidant nanoparticles to the AS plaque through the specific recognition between ApoA1 and the macrophage at the AS lesion site. For one thing, the nanocomplex could alleviate the oxidative stress environment of the AS site through the highly efficient antioxidant effect of CeO2/Mn3O4, which played a therapeutic role in the treatment of AS. For another, it could effectively eliminate the formed lipid plaques and maximally alleviate and treat AS by utilizing the cholesterol efflux effect of ApoA1.
研究领域:
心血管疾病
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纳米医学
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材料科学
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治疗开发
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PubMed
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Xiaoyan Li,Hongbin Zhang
CaO/MgO-Mn 3 O 4 catalysts were prepared for the activation of PMS to degrade TC. • Revealing the non-radical degradation pathway dominated by 1 O 2 . • The system demonstrated excellent anti-interference ability and stability. • The surface -OH played a bridging role in the generation of ROSs. • Predicted the biological toxicity of the TC intermediate. In advanced oxidation processes, free radical-mediated mechanisms have garnered considerable research interest for the remediation of emerging contaminants (ECs). However, compared with non-radical pathways, free radical pathways were prone to side reactions and exhibited poorer environmental adaptability. In this study, alkaline earth metal-doped Ca/Mg-Mn 3 O 4 catalysts with different doping ratios were synthesized to activate peroxymonosulfate (PMS) for the degradation of tetracycline (TC). The optimized catalyst, Ca-Mn 3 O 4 - 10%, achieved 86% TC removal within 90 min, with an apparent rate constant of 0.0218 min −1 , which is 3.04 times higher than that of the pristine Mn 3 O 4 /PMS system. Free radical quenching experiments demonstrated that the degradation of TC was predominantly attributed to a non-radical pathway dominated by singlet oxygen. After five consecutive cycles, the Ca-Mn 3 O 4 - 10% catalyst still maintained a degradation efficiency over 82%, showing excellent catalytic stability. Furthermore, the catalyst exhibited strong resistance to common anions, organic substances, changes in solution pH, and various water matrices. Based on the identification of intermediate products, three degradation pathways were proposed. Toxicity assessment using a predictive model indicated that the biological toxicity of most degradation products was significantly reduced. This study offers new insights and theoretical support into the degradation of wastewater containing ECs via a non-radical mechanism. Download: Download high-res image (273KB) Download: Download full-size image
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ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Min Li,Bin Yu,Wensheng Ma,Xiangyu Fei,Guanhua Cheng,Hui Gao,Zhonghua Zhang
Manganese oxides are considered a highly promising anode material in lithium ion batteries (LIBs) because of their high theoretical capacity, abundant sources, relatively low voltage hysteresis, nontoxic and cost-effectiveness. Nevertheless, the practical application of these materials faces many challenges such as poor lifespan and serious volume variation during operation. Herein, MnO/Mn 3 O 4 –600 composite was obtained based on a single-step pyrolysis procedure from commercial manganese(II) oxalate dihydrate (MOD, C 2 H 4 MnO 6 ). The MnO/Mn 3 O 4 –600 anode exhibits an exceptionally high reversible capacity of 1041.8 mAh g −1 at the current density of 200 mA g −1 , and a remarkable lifespan at 1000 mA g −1 . The outstanding performance benefits from the formation of porous structures on nanoparticles, which not only mitigate volume changes and prevent the aggregation of internal MnO/Mn 3 O 4 nanoparticles, but also enhance the ion diffusion. The in-depth insights into the (de)lithiated mechanism of the electrode are investigated by in situ X-ray diffraction (XRD) technique. Moreover, when applied in a full cell, the MnO/Mn 3 O 4 –600 anode demonstrates exceptional electrochemical property.
研究领域:
材料科学
·
电化学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ya-Fei Guo,Zhen-Hao Luo,Nan Zhang,Peng-Fei Wang,Zong-Lin Liu,Qin-Zhi Lai,Jie Shu,Ting-Feng Yi
High working voltage, large theoretical capacity and cheapness render Mn 3 O 4 promising cathode candidate for aqueous zinc ion batteries (AZIBs). Unfortunately, poor electrochemical activity and bad structural stability lead to low capacity and unsatisfactory cycling performance. Herein, Mn 3 O 4 material was fabricated through a facile precipitation reaction and divalent copper ions were introduced into the crystal framework, and ultra-small Cu-doped Mn 3 O 4 nanocrystalline cathode materials with mixed valence states of Mn 2+ , Mn 3+ and Mn 4+ were obtained via post-calcination. The presence of Cu acts as structural stabilizer by partial substitution of Mn, as well as enhance the conductivity and reactivity of Mn 3 O 4 . Significantly, based on electrochemical investigations and ex-situ XPS characterization, a synergistic effect between copper and manganese was revealed in the Cu-doped Mn 3 O 4 , in which divalent Cu 2+ can catalyze the transformation of Mn 3+ and Mn 4+ to divalent Mn 2+ , accompanied by the translation of Cu 2+ to Cu 0 and Cu + . Benefitting from the above advantages, the Mn 3 O 4 cathode doped with moderate copper (abbreviated as CMO-2) delivers large discharge capacity of 352.9 mAh g −1 at 100 mA g −1 , which is significantly better than Mn 3 O 4 (only 247.8 mAh g −1 ). In addition, CMO-2 holds 203.3 mAh g −1 discharge capacity after 1000 cycles at 1 A g −1 with 98.6 % retention, and after 1000 cycles at 5 A g −1 , it still performs decent discharge capacity of 104.2 mAh g −1 . This work provides new ideas and approaches for constructing manganese-based AZIBs with long lifespan and high capacity.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Fawang Wu,Bomin Feng,Wei Li,Heng Liu,Yihong Mei,Weihua Hu
Transition metal on nitrogen-doped carbons (M-N-C, M = Fe, Co, Mn, etc.) are a group of promising sustainable electrocatalysts toward oxygen reduction reaction (ORR). Compared to its Fe, Co analogues, Mn–N–C possesses the advantage of being inert for catalyzing Fenton reaction, and thus is expected to offer higher durability, but its ORR activity needs essential improvement. Herein, an efficient Mn–N–C ORR catalyst composed of Mn 3 O 4 nanoparticles supported on nitrogen-doped carbon was successfully synthesized by pyrolysis of cyanamide/Mn-incorporated polydopamine (PDA) film coated carbon black (CB), where the presence of N-rich cyanamide confers abundant Mn-N x active sites and rich micropore/mesopores to the catalyst. In an alkaline medium , as-synthesized Mn–N–C electrocatalyst outperforms commercial Pt/C catalyst in terms of onset potential (0.98 V, vs. RHE), half-wave potential (0.868 V, vs. RHE), and limiting current density . Meanwhile, it exhibits excellent durability and resistance to methanol. In a Zinc-air primary battery , it demonstrates better performance as a cathodic catalyst than Pt/C.
研究领域:
材料科学
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电化学
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Hongmei Tang,Lin Lv,Haiyang Xian,Lingyu Ran,Bohong Chen,Yinxuan Fu,Yuandan Wu,Min Fan,Houzhao Wan,Hao Wang
Exploiting high-efficient low-cost metal-based electrocatalysts for oxygen evolution reaction (OER) in alkaline media is still urgent and challenging. Herein, a hierarchical nanostructure of manganese oxide/carbon@iron oxyhydroxide (denoted as Mn 3 O 4 /C@FeOOH) nano-octahedrons via a three-step approach. The optimal electrocatalyst Mn 3 O 4 /C@FeOOH was achieved and delivered a low overpotential of 295 mV at 10 mA cm −2 , a small Tafel slope of 47.6 mV dec −1 and a decent stability toward long-term electrolysis of 16 h with only 2.2% degradation. The excellent OER performance of the hybrid Mn 3 O 4 /C@FeOOH could be attributed to the synergistic effects of the individual counterparts, namely, the structural support of the amorphous carbon skeleton to maintain the integrity of microstructures, the enhanced conductivity imparted by the uniformly dispersed Mn 3 O 4 and graphite nanoparticles, and the partial electron redistribution between the Mn 3 O 4 /C and FeOOH interface, optimizing the adsorption/desorption of intermediate oxygenated species. This work provides a novel strategy to prepare an efficient and stable electrocatalyst for OER in alkaline media.
研究领域:
材料科学
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电化学
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高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Jintao Liang,Fei Guo,Jiaying Huang,Xiaohong Tan,Lixian Sun,Zhide Zhou,Guiyin Li
Golgi protein-73(GP73) is one of the most common biomarkers with outstanding sensitivity and specificity in the diagnosis of hepatocellular carcinoma. Herein an ultrasensitive label-free electrochemical aptasensing platform was constructed for GP73 detection based on reduced graphene oxide-ferrocene formic acid-tripterythrine tetroxide nanocomposites (RGO-Fc-Mn 3 O 4 ) and GP73 aptamer (GP73 Apt ). Gold@poly-o-phenylenediamine (Au@PoPD) was electrodeposited on the surface of screen-printed electrode (SPE) as the conductive substrate. RGO-Fc-Mn 3 O 4 was then drop-coated on Au@PoPD/SPE as a signal probe to generate measurable redox peaks due to the electroactivity of Fc in RGO-Fc-Mn 3 O 4 . GP73 Apt was anchored on the surface of RGO-Fc-Mn 3 O 4 NPs/Au@PoPD/SPE to constitute an electrochemical aptasensing biosensor. When GP73 was captured via the specific affinity of GP73 Apt and formed GP73-GP73 Apt complex onto the aptasensing platform, the formation GP73-GP73 Apt complex impeded the electron transfer on the electrode interface, resulting in a decrease in the peak current recorded by differential pulse voltammetry method. Thus, GP73 can be detected by measuring the change of Fc redox peak current in RGO-Fc-Mn 3 O 4 . Log-linear calibration curve for GP73 concentration (0.01–1000 ng/mL) was obtained with good correlation coefficients of 0.99485 and a lower limit of detection of 0.01 ng/mL. The human serum samples were tested by direct detection method, and the relative error and relative standard deviation are 4.21–9.87% and 3.28–9.40%, respectively. All these results demonstrate that the proposed aptasensor would be a promising tool for clinical analysis of GP73 in the diagnosis of hepatocellular carcinoma.
研究领域:
生物医学工程
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分析化学
·
癌症诊断
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Song Wu,Junli Wang,Xuanbing Wang,Di Jiang,Jinlong Wei,Xiaoning Tong,Zhenwei Liu,Qingxiang Kong,Naixuan Zong,Ruidong Xu,Linjing Yang
s Ti-based PbO 2 electrodes must currently address the high overpotential and low corrosiveness of the anodic oxygen evolution reaction (OER) during zinc electrowinning. In this study, a composite electrode composed of Ti/TiH 2 /β-PbO 2 − Mn 3 O 4 @C (0.6 g L –1 ) was fabricated using Ti/TiH 2 generated by electrochemical reduction of Ti/TiO 2 prepared by laser ablation as an intermediate layer, co-deposited β-PbO 2 , and Mn 3 O 4 @C micro-flakes prepared by high-temperature pyrolysis-oxidation as the active layer. In a zinc electrowinning test solution (50 g L –1 ZnSO 4 mixed with 150 g L –1 H 2 SO 4 ), the oxygen evolution and corrosion behavior of the obtained Ti/TiH 2 /β-PbO 2 − Mn 3 O 4 @C composite anodes were systematically investigated. Ti/TiH 2 /β-PbO 2 − Mn 3 O 4 @C (0.6 g L –1 ) exhibited a low overpotential of 493 mV, a low Tafel slope of 73.6 mV dec −1 , a low i corr of 2.320 × 10 −5 A cm −2 and voltage stability of 1.65 V vs. RHE for up to 72 h in stability tests, with an overall performance outperformed most of the reported Ti-based PbO 2 electrode materials. The outstanding catalytic activity is primarily attributable to the low resistance and porous interlayer of TiH 2 nanosheets, which speeds up the rate of electron transfer. The addition of Mn 3 O 4 @C micro-flakes to the active layer enhances the composite electrode's OER performance and corrosion resistance.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Shaojian Jiang,Yuhang Liu,Ruidong Yang,Kai Deng,Ziqiang Wang,You Xu,Liang Wang,Hongjie Yu,Hongjing Wang
Propylene glycol (PG) demands sustainable electrochemical synthesis to overcome the environmental and economic drawbacks of thermochemical processes. The activation of reactive oxygen species (ROS) represents a critical determinant in optimizing the electrocatalytic oxidation of propylene (Pr) to PG. Here, we propose a lattice oxygen involving mechanism (LOM) to enhance *OH generation and Pr activation, achieving direct conversion of Pr to PG using Mn 3 O 4 nanoparticle-loaded Pd metallene (Mn 3 O 4 /Pdene). Mn 3 O 4 /Pdene achieves 86.5 % PG selectivity and 55.4 % Faradaic efficiency at 1.15 V via LOM pathway with stable performance over 80 h. In situ ATR-SEIRAS, 18 O isotope labeling experiments, and in situ differential electrochemical mass spectrometry (DEMS) validate the LOM pathway: Lattice-O activates Pr through C-O-C bond formation, while *OH from lattice-O attacks tertiary carbons to generate *PrOH, with water-derived *OH replenishing lattice-O for PG synthesis. DFT reveals that the LOM pathway facilitates H 2 O dissociation and C C bonds polarization, lowering the rate-determining step energy barrier. This work highlights the role of lattice oxygen in the electrocatalytic propylene oxidation and unveils a novel LOM pathway of propylene oxidation.
研究领域:
电化学
·
催化
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材料科学
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化学工程
·
物理化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lingtong Li,Ting Shen,Juan Liang,Jiaxiu Guo
A novel self-assembled Mn 3 O 4 @Bi 5 O 7 I/BiOI (Mn 3 O 4 -BBOI) bi-heterojunction photocatalyst was synthesized via a facile one-step hydrothermal method and systematically characterized to investigate its optoelectronic properties. The photocatalytic performance was evaluated through the degradation of NO in a continuous-flow microreactor. Results indicate the successful construction of two distinct interfacial structures within the Mn 3 O 4 -BBOI system: an interface between Mn 3 O 4 and the Bi 5 O 7 I/BiOI heterostructure, and an internal interface between Bi 5 O 7 I and BiOI. These interfaces exhibit lattice distortions and vacancies, which are critical for promoting charge separation. Specifically, Mn 3 O 4 acts as an electron acceptor, facilitating the transfer of electrons from I⁻ in the bismuth-based substrate to Mn 3 + in Mn 3 O 4 , thereby optimizing the generation and recombination dynamics of charge carriers. The Mn 3 O 4 -BBOI photocatalyst demonstrates stable performance, achieving 56–60 % NO removal efficiency under light irradiation, along with excellent suppression of toxic NO₂ byproducts. Introduction of a small amount of water vapor (5 vol%) increase the NO removal efficiency to the instantaneous maximum value of 65 %, although the inhibitory effect on NO₂ is slightly attenuated. Mechanistic studies reveal that superoxide radicals (•O 2 ⁻) serve as the primary active species responsible for the oxidation of NO to nitrite/nitrate (NO 2 ⁻/NO 3 ⁻), while hydroxyl radicals (•OH), generated via the reaction between •O 2 ⁻ and adsorbed H 2 O, contribute secondarily to the oxidation process.
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Jingqi Chen,Zhenhua Bai,Xuetong Li,Qingliang Wang,Jinlong Du,Rihuan Lu,Xianghua Liu
We report a novel in-situ symbiosis method to prepare reduced graphene oxide wrapped Mn 3 O 4 nanoparticles (rGO/Mn 3 O 4 ) with uniform size about 50 nm as anodes for lithium-ion batteries (LIBs), which can simplify the preparation process and effectively reduce pollution. The rGO/Mn 3 O 4 nanocomposite exhibited a reversible specific capacity of 795.5 mAh g −1 at 100 mA g −1 after 200 cycles (capacity retention: 87.4%), which benefits from the unique structural advantages and the synergistic effect of rGO and Mn 3 O 4 . The Mn 3 O 4 nanoparticles encapsulated among the rGO nanosheets exhibited good electrochemical activity, and the multilayer wrinkled rGO sheets provided a stable 3D conduction channel for Li + /e − transport. The rGO/Mn 3 O 4 nanocomposite is a promising anode candidate for advanced LIBs with excellent cycling performance and rate performance. Furthermore, this new preparation method can be extended to green and economical synthesis of advanced graphene/manganese-based nanocomposites.
研究领域:
材料科学
·
能源科学
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·563
·
IF 5.4
Liu Huan,Chen Yuhan,Sun Han,Wang Boyan,Liu Aihua
The sensitive monitoring of bisphenol A (BPA) concentration remains a critical challenge in environmental analysis and public healthcare. In this study, Mn 3 O 4 nanorods were facilely prepared in an aqueous solution at room temperature using Mn 2+ as the precursor, NaOH as the basic source and L-histidine as the mediator. The as-prepared Mn 3 O 4 nanorods exhibit excellent laccase-mimicking activity with a catalytic efficiency of 3.85 × 10 − 3 min − 1 . The catalytic mechanism was confirmed to be oxygen vacancies by electron paramagnetic resonance spectrum and enzymatic inhibition experiment. Taking advantage of the excellent laccase-mimetic properties of the Mn 3 O 4 nanozyme, a sensitive and selective colorimetric sensing platform for BPA detection was constructed. The colorimetric sensing platform achieved a linear detection range of 1–60 µM BPA and a detection limit of 0.23 µM for BPA (3σ/S). The proposed method was applicable to the determination of BPA in plastic-packaged white vinegar, bottled water and milk with good recoveries and reproducibility. This work not only provides a novel and efficient analytical tool for the rapid detection of BPA but also offers a new insight into the design and synthesis of other amino acid-mediated nanozymes for environmental monitoring applications. Graphical
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高影响因子
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