Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yu Liao,Yaowei Liu,Yang Li,Linjuan Zhang,Jian-Qiang Wang,Sivaprakash Sengodan,Bingbing Niu,Guntae Kim
Carbon capture, utilization, and storage (CCUS) is recognized as a critical pathway for decarbonization, but current approaches are limited by energy-intensive operation and suboptimal conversion efficiency. In this context, the Zn-CO2 system holds immense promise for simultaneous electricity generation, green hydrogen production, and efficient CO2 utilization. However, further improvement of the overall system efficiency hinges on enhancing the hydrogen evolution reaction (HER) in quasi-neutral media. Herein, we report a Mn-doped cobalt phosphide (Mn-CoP/NF) catalyst grown on nickel foam via a facile one-step electrodeposition, designed to promote water dissociation and enhance HER activity in neutral electrolytes. Structural characterizations reveal that Mn doping induces an amorphous transformation with a cauliflower-like morphology, markedly increasing the electrochemical active surface area (ECSA) and exposing abundant active sites. XPS analysis further confirms that Mn functions as an electron donor, generating electron-rich Co/P surfaces that favor optimized adsorption of reaction intermediates. Kinetic analysis demonstrates that the incorporation of oxyphilic Mn substantially lowers the Tafel slope from 158.7 mV dec -1 to 62.0 mV dec -1 , evidencing accelerated water dissociation in the Volmer step. Density functional theory (DFT) calculations reveal that Mn incorporation lowers the water dissociation energy barrier and optimizes the hydrogen adsorption free energy (ΔGH*). Consequently, the Mn-CoP/NF catalyst exhibits outstanding HER activity in saturated KHCO3 solution, with an overpotential of 149.9 mV at 50 mA cm-2 , similar to commercial 1 mg cm-2 Pt/C (146.4 mV). Furthermore, the Zn-CO2 system assembled with Mn-CoP/NF as the HER electrode achieves a maximum current density of 378 mA cm -2 and sustains stable operation for over 300 hours at -100 mA cm-2 .
✓ 已验证
DOI
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.
✓ 已验证
DOI
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
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
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
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
DOI
高影响因子
Nano Express
·
2020
·Vol. 1
·期 1
·010056
·
IF 0
Shuhong Xu,Ruohu Zhang,Hao Wu,Yiping Cui,Chunlei Wang,Haibao Shao
The incorporation of impurity cation as a way of introducing various novel functionalities provides an additional level of control over the electronic and optical properties of perovskite nanocrystals (NCs). However, the conventional post-synthetic cation exchange approaches suffer from large time and energy consumption. In this work, we developed a novel one-pot method to synthesize Mn-doped CsPbClxBr3−x NCs by merit of sonochemical technique, achieving dramatically rapid reduce of time and energy consumption. The localized hot spots with high transient temperature, pressure, and cooling rate, as well as an excellent stirring action of ultrasonic preparation facilitate the diffusion of Mn2+ in perovskite lattice. Besides, further reaction kinetics investigation reveals an apparent decrease of reaction order from original method (2.4) to our ultrasound-assisted method (1.0).
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
MATERIALS RESEARCH BULLETIN
·
2013
·
IF 1.913
L.Z. Pei,Y.K. Xie,Y.Q. Pei,Y.X. Jiang,H.Y. Yu,Z.Y. Cai
Mn vanadate nanosheets have been synthesized via a facile hydrothermal route using ammonium metavanadate and Mn acetate as the raw materials, polyvinyl pyrrolidone (PVP) as the surfactant. X-ray diffraction (XRD) shows that the Mn vanadate nanosheets are composed of monoclinic MnV 2 O 6 phase. Scanning electron microscopy (SEM) observation indicates that the nanosheets have the average thickness of about 50 nm, length of 2–10 μm and width of 800 nm to 2 μm. The growth process of the Mn vanadate nanosheets has also been discussed based on the analysis of the roles of the growth conditions on the formation of the Mn vanadate nanosheets. The nanosheets show good photocatalytic activities for the degradation of methylene blue (MB) under visible light irradiation. About 72.96% MB can be degraded after visible light irradiation for 1 h over 10 mg Mn vanadate nanosheets in 10 mL MB solution with the concentration of 10 mg L −1 .
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Liang Guo,Huifang Li,Xiaoying Wang,Yuzhen Jia,Huaixia Yang,Xiaoke Zheng
Acetamiprid (ACE), a typical neonicotinoid pesticide, has raised significant environmental and food safety concerns due to its persistent residues. Herein, we developed a fluorescent/colorimetric dual-mode sensor based on bifunctional Mn-doped carbon dots (Mn-CDs). The Mn doping strategy generates abundant catalytically active sites, not only endowing oxidase-like activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue products, while simultaneously retaining the intrinsic fluorescence property. Magnetic beads (MBs) conjugated with ACE aptamer (Apt) (MBs@Apt) and Mn-CDs conjugated with DNA1 (Mn-CDs@DNA1) were engineered for hybridization. Upon ACE addition, it will trigger competitive displacement of Mn-CDs@DNA1 from MBs, inducing simultaneous colorimetric and fluorescent signal changes. This displacement mechanism enables dual-mode ACE quantification with high sensitivity (LOD = 15.36 fg/mL for fluorescence mode and 57.54 fg/mL for colorimetric mode) and selectivity. The sensor achieves reliable detection in complex matrices, providing a rapid, high-performance solution for pesticide monitoring.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2024
·
IF 6.5
Fuping Song,Juping Zhang,Dongfang Li,Tao Zhu,Xing Zhu,Hua Wang
Oxidative dehydrogenation (ODH) of ethylbenzene is a promising process for styrene production. However, its application is limited by product overoxidation and purification requirements due to the co-feeding of mild oxidants. Herein, we report a facile manganese-based catalyst (K/Mn 3 O 4 -Al 2 O 3 ) and achieve competitive styrene selectivity of 88 % and ethylbenzene conversion of 95 % at 450 ℃ (84 % yield vs. ∼ 60 % yield in commercial dehydrogenation process at 600 ℃) under a cyclic redox ODH scheme. The introduction of Al 2 O 3 into MnO x restructures composite oxides and depresses bulk lattice-oxygen migration for the partial oxidation of ethylbenzene. The surface modification using potassium creates reactive sites and regulates surface properties, achieving ethylbenzene activation and high conversions. Highly active lattice oxygen in catalysts after bulk and surface modifications selectively converts ethylbenzene to styrene and water. This study provides an understanding of roles of manganese-based catalysts in styrene generation and offers a strategy to modulate lattice oxygen on catalysts.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 23
·3568-3575
·
IF 3.382
Kun Bai,Rihui Tan,Bao Ke,Xiaogang Xue,Jialong Zhao,Bingsuo Zou,Ruosheng Zeng
In recent years, halide perovskites have attracted great attention as a type of well-known material, especially inorganic perovskites like CsPbX3 (X = Cl, Br, and I). Herein, we introduce a new family of doped nanocrystals offering unique insights into the synthetic chemistry of doped perovskites. Mn-Doped Cs3Pb6.48Cl16 nanocrystals with pure dopant emission were prepared at room temperature with a low Mn/Pb feed ratio (>1.4). The band edge luminescence of Mn:Cs3Pb6.48Cl16 was almost completely inhibited, and the photoluminescence quantum yields (PL QYs) of Mn ions could reach up to 25%. Furthermore, the temperature-dependent PL spectra and temperature-dependent lifetime of the new family of doped nanocrystals indicated that the inflection point affects both the PL intensity and the PL lifetime of Mn2+ ions with increasing the temperature, which is related to the Mn/Pb ratio.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）