JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Rongyang Cheng,Huijie Lu,Zhengyang Li,Xuan Ai,Yuanyuan Wu,Feifan Guo
A Mn-doped RuO 2 /Ru heterojunction was synthesized, featuring Mn-RuO 2 nanoparticles anchored onto metallic Ru nanospheres. • Through the interfacial charge transfer from Ru to RuO 2 effectively suppresses the formation of soluble RuO 4 2− species. • Mn doping further optimizes the electron density at the ruthenium sites, endowing them with an appropriate adsorption configuration. • The weakened Ru O bond covalency is key to inhibit the degradative LOM pathway in favor of the more stable AEM. • The Mn-RuO 2 /Ru demonstrates superior performance in 0.5 M H 2 SO 4 , requiring ultra-low overpotentials for OER and HER. The development of efficient and durable electrocatalysts for acidic water splitting is paramount for the advancement of sustainable energy conversion technologies. However, the inherent activity-stability trade-off in non‑iridium-based catalysts remains a formidable barrier to commercial deployment. Herein, a Mn-doped RuO 2 /Ru heterojunction catalyst was synthesized by precisely anchoring Mn-doped RuO 2 nanoparticles onto metallic Ru nanospheres. The resulting interfacial electronic modulation facilitates electron transfer from Ru to RuO 2 , thereby stabilizing the high-valent ruthenium intermediates. Simultaneously, Mn doping optimizes the electron density at the Ru active centers to ensure ideal adsorption configurations for reaction intermediates. Evaluated in 0.5 M H 2 SO 4 , the bifunctional Mn-RuO 2 /Ru catalyst exhibits exceptional electrocatalytic performance, requiring ultra-low overpotentials of only 192 and 52 mV to deliver 10 mA cm −2 for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. Notably, the catalyst sustains continuous OER operation for over 100 h with negligible degradation, demonstrating remarkable structural integrity in highly corrosive media. Density functional theory (DFT) calculations unveil a dual-regulation mechanism. The synergy between the RuO 2 /Ru interface and Mn dopants downshifts the Ru d -band center to balance intermediate adsorption, while simultaneously suppressing the unstable lattice oxygen mechanism (LOM) by weakening Ru O bond covalency. When integrated into a symmetric acidic electrolyzer (Mn-RuO 2 /Ru||Mn-RuO 2 /Ru), a cell voltage of just 1.50 V is required to reach 10 mA cm −2 , significantly outperforming the commercial Pt/C||RuO 2 benchmark. This work provides a robust electronic engineering strategy for designing sustainable, high-performance noble-metal-lean catalysts for acidic water splitting. The synergy of the heterointerface and Mn dopants optimizes Ru’s electronic structure, preventing over-oxidation and suppressing lattice-oxygen participation, thereby enabling exceptional acidic water splitting performance. Download: Download high-res image (130KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2026
·Vol. 27
·期 15
·6704
·
IF 5.6
Tao Wu,Chaoyang Shi,Chenyang Liu,Chenjie Qin,Jiangshan Wang,Yating Pang,Wenjun Gong,Wenming Wang,Hongfei Wang
Two tri-carbonyl complexes, [Mn(CO)3(5cpa)Br] (1) and [Re(CO)3(5cqn)(OCH3)] (2), were synthesized, where 5cpa is 5-Cl-2-picolinic acid and 5cqn is 5-Cl-8-Hydroxyquinoline. Their structures were determined using X-ray diffraction techniques. The electronic absorption and IR spectra of the complexes were experimentally measured and theoretically assigned through density functional theory (DFT) calculations. The photo-induced CO release was verified using time-resolved infrared spectroscopy, and the transfer of CO to hemoglobin (Hb) was monitored by UV-vis spectroscopy. The rate of CO release and transfer from Mn complex1is significantly faster than that from Re complex2. Complex2exhibits higher cytotoxicity against HeLa cells than complex1, with IC50values of 40.1 μM and 10.6 μM for1and2, respectively, which decrease to 16.2 μM and 4.9 μM after photo irradiation. Moreover,1exhibited a stronger binding constant (Kb) with human serum albumin (HSA) than2, with values of 1.6 × 106and 7.0 × 105M−1, respectively. The structures of HSA complex adducts revealed that both the resulting [Mn(CO)3(5cpa)]−and [Re(CO)3(5cqn)]−group coordinate with the N atom of His146, while four additional dissociated Mn-CO groups were observed to bind to HSA for complex1. This study provides insights into the stability, possible metabolic pathways, and potential applications of these carbonyl complexes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Maohan Liu,Lingyi Kong,Xinyu Zhang,Yaping Yan,Haiyan Hu,Hanshen Xin,Jiayang Li,Yubin Niu,Yanfang Zhu,Yao Xiao
Construction of a structurally compatible Na 0.44 MnO 2 -derived interphase for enhanced interfacial stability and Na + transport kinetics. • In situ SXRD and XAS analyses reveal a reversible P2-OP4-P2 phase evolution and a stabilized Mn-centered local coordination environment. • The optimized material suppresses moisture/CO 2 -induced surface carbonation, Na + /H + exchange, and hydrated-phase formation, thereby markedly enhancing its air stability. • Elucidating the multiscale mechanisms of surface structural regulation for modulating structural evolution, local coordination environments, and air stability. Mn-based layered oxides are attractive cathode candidates for sodium-ion batteries (SIBs) because of their high capacity, cost effectiveness, elemental abundance, and scalable synthesis. However, their practical implementation is hindered by moisture/CO 2 -induced surface degradation, surface residual alkali accumulation, sluggish Na + transport kinetics, and unstable interfacial chemistry. Herein, Na 0.55 Ni 0.1 Fe 0.1 Mn 0.8 O 2 (NNFM) is selected as a model Mn-based layered oxide cathode to establish a residual-alkali-conversion-driven surface structural regulation strategy. Owing to the formation of a structurally compatible and chemically stable interphase, the optimized Na 0.55 Ni 0.1 Fe 0.1 Mn 0.8 O 2 @5%Na 0.44 MnO 2 (NNFM-T5) delivers a specific capacity of 197.14 mAh g −1 at 0.1C and an energy density of 556.9 Wh kg −1 based on the cathode active-material mass, demonstrating excellent electrochemical performance. NNFM-T5 also exhibits a reversible P2-OP4-P2 structural evolution, reduced interfacial polarization, and accelerated Na + transport kinetics, as evidenced by operando in situ synchrotron X-ray diffraction and distribution of relaxation times analysis. In addition, ex situ X-ray absorption spectroscopy indicates reversible Ni-centered redox, limited Fe valence variation, and stabilized Mn-centered coordination. Air-aging experiments and dynamic contact angle measurements further verify the improved air tolerance of NNFM-T5. This work shifts the focus of surface modification from empirical coating toward residual-alkali-conversion-driven surface structural regulation, providing a design principle for Mn-based layered oxide cathodes that combine high capacity, air stability, and favorable interfacial kinetics. A surface structural regulation strategy based on residual alkali conversion is developed for Mn-based layered oxide cathodes, enabling the construction of a Na 0.44 MnO 2 -derived interphase. This strategy significantly enhances the structural stability, air stability, and Na + transport kinetics of the material, providing an effective approach for the design of high-energy-density layered oxide cathodes for sodium-ion batteries. Download: Download high-res image (176KB) Download: Download full-size image
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2026
·
IF 3
Xuejiao Li,Yuxiao Wang,Haiyang Fu,Jiamin Cheng,Bo Li,Zilong Xu,Na Fan,Rui Li,Lianwei Shan,Xin Liu,Limin Dong,Hongrui Ji,Piaoping Yang
The development of efficient photothermal therapy (PTT) and photodynamic therapy (PDT) agents is crucial for overcoming the limitations of traditional cancer treatments, such as the need for single wavelength and the limited penetration depth of excitation light. The tumor microenvironment (TME), characterized by low oxygen levels and an overabundance of endogenous hydrogen peroxide (H2O2), further complicates the therapeutic efficacy. In this study, we synthesized a series of Mn-doped W18O49 materials using a one-step solvothermal method, systematically varying the solvents with n-propanol and isopropanol and manganese doping levels. The effects of solvent type and doping amount on crystal structures, morphology and photo conversion performance were investigated in detail. Under single-wavelength near-infrared (NIR) irradiation at 808/1064 nm, the synthesized materials demonstrated simultaneous hyperthermia and singlet oxygen (1O2) generation, enabling both PTT and PDT. Notably, the Mn-doped W18O49 materials accumulated in the TME could catalyze the conversion of H2O2 into O2, thereby enhancing the production of 1O2 and resulting in a self-amplifying therapeutic effect. This synergistic enhancement of PTT and PDT was further corroborated by in vitro studies, which showed significant inhibitory effects on cancer cell proliferation. Our findings demonstrate that solvent-dependent Mn doping profoundly affects the microstructure and phototherapeutic performance of W18O49 materials, providing a novel strategy for developing advanced PTT/PDT agents activated by single NIR irradiation and responsive to the TME.
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PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Siyu Wen,Jiale Cheng,Zuting Yan,Yiru Wang,Yongwei Shi,Yuhan Sun
The lack of rapid, user-friendly methods for alternariol (AOH), a prevalent emerging mycotoxin, presents a considerable analytical challenge. This work introduces an integrated sensing strategy advancing from classical homogeneous liquid-phase detection to a portable AI-enhanced paper-based biosensor. The system employed a Cu/Mn-CeO 2 nanozyme as signal generator and amplifier, and exploited the inhibitory effect of AOH on acetylcholinesterase (AChE) to suppress the thiocholine (TCh)-mediated reduction of oxidized 3,3′,5,5′-tetramethylbenzidine (oxTMB), enabling quantitative colorimetric readout. It achieved ultra-sensitive detection in the liquid phase with a limit of detection (LOD) of 0.016 pg/mL. By incorporating an aptamer affinity column for sample cleanup, the assay was transferred to a foldable paper platform. An AI-driven Monte Carlo color analysis method addressed issues of color heterogeneity and subjective interpretation, yielding an LOD of 0.12 μg/kg in wheat. This study provides a point-of-need solution for AOH screening and establishes a generalizable framework for detecting contaminants in complex samples.
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高影响因子
WATER RESEARCH
·
2026
·
IF 12.8
Jialong Chen,Jialiang Qiao,Lipeng Fu,Xinlei Zhang,Yifan Dai,Jie Liu,Zhenzhou Li,Han Zhang,Xiaobin Tang,Guibai Li,Jiaxuan Yang,Heng Liang
FeMnOx-FeMnOB modification strategy reduced the Mn-shock initiation time by 11 days. • An appropriate redox balance between Mn(II) and Mn(IV) facilitated the removal of Mn(II)aq under anoxic conditions. • FeMnOx enabled microbial enrichment, EPS secretion, and robust cake layer formation. • FeMnOB facilitated the in situ generation and replenishment of Fe/Mn oxides in conect layer through aerobic manganese bioxidation. Membrane technology is widely utilized in reservoir treatment due to its reliable performance in ensuring drinking-water quality. However, seasonal Mn shocks pose a challenge to the stable operation. Herein, we proposed membrane modification strategies for gravity driven membrane (GDM) systems, incorporating Fe/Mn oxides (FeMnOx), Fe/Mn-oxidizing bacteria (FeMnOB), and their coupled system to enhance resistance against Mn shocks. The FeMnOx-FeMnOB group exhibited excellent manganese adsorption-retention and oxidative removal performance. This system reduced initiation time by over 11 days under Mn shocks of 0.5-2.3 mg/L, significantly improving the responsiveness and adaptability to sudden Mn contamination. Based on existing evidence, FeMnOx and FeMnOB may form an efficient synergistic cycle. Specifically, FeMnOx-mediated oxidation triggered microbial extracellular polymeric substances (EPS) secretion via interfacial electron transfer. The resultant EPS, in turn, promoted FeMnOB colonization and concurrently supplied FeMnOx with a stable microenvironment and substrates. Moreover, FeMnOB metabolically oxidized and solubilized manganese to regenerate the active sites of FeMnOx in situ. This cycle was further reinforced by abiotic Fe(II)/Fe(III) and Mn(II)/Mn(IV) redox couples, which mitigated dissolved-oxygen competition under high manganese stress and ensured favorable conditions for FeMnOB. Therefore, this study unravels the abiotic-biotic synergy in Mn removal, informing green membrane strategies for emergency treatment of sudden reservoir contamination. Download: Download high-res image (403KB) Download: Download full-size image
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Crystals
·
2025
·Vol. 15
·期 6
·563
·
IF 2.4
Jinyi Wang,Bowen Fan,Jincheng Yu,Mengqiong Huang,Jiana Song,Zhaokun Yang,Yuan Ji
Single-phase ternary Mn-Cu-Al alloy ribbons were fabricated by melt-spinning a Mn48Cu28Al24ingot on a rotating copper roller. They were used as dealloying precursor for forming the nanoporous structure in HCl solution. The basic dealloying behavior was examined by controlling the dealloying time from 5 min to 180 min at 50 °C. Due to the active chemical property, Mn and Al elements are easily etched in acid solutions. Meanwhile, Cu elements retained and rearranged. A three-dimensional bicontinous nanoporous structure was fabricated, with a ligament size of 55 nm~100 nm and pore size of 35 nm~85 nm. The porosity evolution of dealloyed MnCuAl alloy was divided into three stages. First, the dissolution of Mn and Al is so significant that formation of pores is dominant. Stage two, the rapid growth of both ligament size and pore size. The ligament/pore ratio is nearly unchanged. The last stage is ligament coarsening. Moreover, the electrocatalytic activity for glucose oxidation of dealloyed samples is examined. The 40 min dealloyed MnCuAl ribbon exhibited the highest sensitivity and relatively maximum current density.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Kailin Fu,Weijian Chen,Jianmin Liu,Jian Liang
Perovskite oxides are increasingly recognized as cost-effective catalytic materials for facilitating both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air-electrode electrode of Zn-air batteries (ZABs) and fuel cells. In this study, we have employed a non-hydrolytic sol-gel (NHSG) technique to synthesize La 0.8 Sr 0.2 Co 0.8 X 0.2 O 3-δ (X = Fe, Mn, and Ni) perovskite nanoparticles at a low temperature of 600 °C. Among these perovskite oxides, La 0.8 Sr 0.2 Co 0.8 Fe 0.2 O 3-δ (LSCFO) exhibited the highest specific surface area of 12.68 m 2 g −1 and possessed the greatest number of oxygen vacancies. Specifically, it achieved a higher half-wave potential of 0.657 V for ORR. Meanwhile, it exhibited a lower OER overpotential of 418 mV at a current density of 10 mA cm −2 , along with the smallest ΔE value of 0.991 V. When utilized as an air electrode catalyst for ZABs, LSCFO exhibits a high peak power density of 152.2 mW cm −2 and remarkable long-term cycling stability (100 h at 2 mA cm −2 ), which are close to the performance metrics of commercial Pt/C + RuO 2 catalysts. This study demonstrates the potential to enhance the bifunctional catalytic activity of LaCoO 3 -based perovskite air electrodes for ZABs through a straightforward doping approach within a NHSG process.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Feng Wang,Meiqi Zheng,Xiyan Zheng,Peng Liu,Daosheng Liu,Jiageng Liu,Shankui Wei,Chun Wang,Yongdong Liu,Jianqiu Deng
Due to the remarkable high energy density and high operating voltage, lithium-rich layered oxides (LLOs) are emerging as one of the most promising candidates for high-specific-energy cathode materials . However, the poor cycling stability and severe voltage degradation are key barriers, which limit their practical application. In this paper, Bi 2 O 3 modified Li 1.2 Mn 0.6 Ni 0.2 O 2 (LMO@BO) is developed to address these challenges. The uniform and dense coating is constructed on the surface of LMO, which utilizes number of oxygen vacancies in its crystal structure to mediate the release of O 2 and mitigate the irreversible loss of lattice oxygen, further suppress the phase transformation during the cycling process. Specifically, the specific discharge capacity of the LMO@BO cathode maintains 197.9 mAh g −1 at 1C with capacity retention rate of 96.3 % after 200 cycles(vs. unmodified LMO with capacity of 147.5 mAh g −1 and retention rate of 80.1 %. Meanwhile, a small amount of Bi 3+ is doped into the bulk phase to broaden the Li + migration channel, resulting in an efficient Li + diffusion. Overall, Bi 2 O 3 modified LMO sample is conducive to meeting the requirements of high energy density for lithium-ion batteries applications.
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Surfaces and Interfaces
·
2026
·
IF 6
Guihao Hu,Yu Li,Yao Liu,Jie Yang,Tiantian Luo,Jie Zhong,Wensheng Yue,Zhike Li,Xianfu Li,Jiang Zhu
Tumor hypoxia limits radiotherapy and chemotherapy efficacy by promoting treatment resistance, while hypoxia-activated prodrugs (HAPs) like Tirapazamine (TPZ) face clinical failure due to insufficient tumor hypoxia. To address this challenge, we engineered HRP-catalyzed Mn(II) chelate-doped TPZ@CaCO₃/PDA-Mn@PEG nanoparticles (TCPPM NPs) that actively amplify hypoxia for potent TPZ activation. The hollow CaCO₃ core enables pH-responsive TPZ release (80% at pH 5.5), while the Mn-DopaCDTA-doped PDA shell provides enhanced T1-weighted MRI contrast ( r ₁ = 17.6 mM⁻¹s⁻¹, per Mn, 25 °C, 0.5 T), photoacoustic/ultrasound imaging, and synergistic PTT/PDT via ROS generation (4.0-fold increase, 1% O₂ conditions). In 4T1 tumor models, TCPPM NPs achieved 85% tumor reduction (vs. 45% for TPZ alone) and 45-day survival, overcoming HAP limitations through hypoxia amplification (PDA ROS O₂ consumption + 61.3 °C PTT) and calcium-mediated mitochondrial damage. This HAP-specific theranostic platform integrates precise imaging-guided therapy, presenting a breakthrough for hypoxia-targeted cancer treatment.
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高影响因子
International Journal of Applied Ceramic Technology
·
2026
·Vol. 23
·期 3
·e70215
·
IF 2.6
Yu Fu,Sheng Jiang,Biao Wu,Xiaoli Deng,Xiaochun Wang
Ceramic metallization provides an effective insulation strategy for reversible solid oxide cell (RSOC) pipeline connections that are prone to side short-circuiting. In this work, 95 wt.% Al 2 O 3 ceramics were metallized by the activated Mo–Mn method, and 15 metallization formulations with different Mo, MnO, Al 2 O 3 , and SiO 2 contents were designed to optimize the microstructure, phase composition, and bonding strength of the metallized layer. The results show that, after sintering at 1400°C for 1 h, the optimal formulation consists of 70 wt.% Mo, 9 wt.% MnO, 6.3 wt.% Al 2 O 3 , and 14.7 wt.% SiO 2 . Under this condition, the Mo skeleton is continuous, the activator melt forms a glassy phase, and a reliable transition layer is developed at the ceramic/metallization interface, yielding a shear strength of 146.3 MPa. Electroless Ni–P post-plating on the optimized metallized surface produces a dense and continuous coating with typical nodular morphology and an average thickness of about 15–17 µm. The plated layer exhibits a relatively uniform hardness of 382.84 HV and maintains good structural integrity after 300 thermal-shock cycles, demonstrating promising potential for RSOC-related ceramic-to-metal insulating connection components.
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高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Qinhui Ren,Li Hu,Fuhua Wei,Wei Shang,Min Li,Zhao Liang
The Zn/Mn-MOFs/GO composites were synthesized via a solvothermal method, and their structural characteristics were investigated using XRD, SEM, and FT-IR techniques for the adsorption study of Minocycline and Orange IV. The experimental results show that when the concentration of the minocycline solution is 30 ppm and 150 mg of GO/Zn/Mn - MOF composites is added, the maximum removal rate can reach 94.4%. When the concentration of the Orange IV solution is 30 ppm and 150 mg of GO/Zn/Mn - MOF composites is added, the maximum removal rate can reach 99.7% within 30 min. The influence of pH on the adsorption performance of these composites for Minocycline and Orange IV was thoroughly examined. The adsorption effect is better under acidic conditions. In summary, the Zn/Mn-MOFs/GO composite demonstrates excellent capability in removing Minocycline and Orange IV, offering significant implications for the management of organic pollutants.
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高影响因子
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