INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Qian Liu,Liying Wang,Guohua Chen,Gaoqi Wu,Jingjing Wang,Zhiwei Liu,Zhenzhu Cao,Yongfeng Zhang
Transition metal sulphides and oxides have been identified as potential cathode materials for lithium-ion batteries with high initial capacity and high selectivity. Nevertheless, the low ground conductivity and volume expansion have constituted significant obstacles to the advancement of this field of study. In this study, the heterostructure CoMn₂O₄/MnS₂@C1-2-2 of MnS₂ and CoMn₂O₄ was obtained through high-temperature (Ar. 450 °C) calcination of a novel red single crystal [CoMn(TDC)] n precursor. The resulting structure exhibited excellent lithium-ion transport properties. The biphasic heterostructure with a porous carbon framework is capable of forming a multitude of phase interfaces and conductive pathways, which facilitate charge migration, enhance conductivity, and expand the contact area with the electrolyte, thereby augmenting the charge transfer capability. The CoMn 2 O 4 MnS 2 @C1-2-2 composite displays remarkable lithium storage capabilities, with a specific capacity of 689 mA h g −1 even after 400 cycles at 0.5 A g −1 .
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Results in Physics
·
2023
·
IF 5.3
Meijie Zhu,Hua Xu,Zuoquan Tan,Le Wang
Large-area and uniform two-dimensional (2D) non-layered α-MnSe was successfully synthesized via the molecular sieve modified chemical vapor deposition (CVD). The molecular sieve serves both as a filter and a container to controllable release the Mn precursor in a stable and much lower concentration, leading to the uniform growth of 2D α-MnSe flakes. The thickness, crystalline quality and uniformity of the as-grown α-MnSe are further characterized. Our study validated the positive role of molecular sieve in the controllable growth of 2D α-MnSe, which is believed to be applicable to other non-layered transition metal chalcogenides (TMCs) and will be beneficial for their further applications in electronics, optoelectronics and spintronics.
研究领域:
材料科学
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纳米科技
·
凝聚态物理
·
无机化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiayu Lin,Wenwen Luo,Zhanwen Wu,Haiyan Leng,Chenghua Sun,Qian Li,Chengzhang Wu
In the present work, three kinds of γ-MnS with different morphologies were prepared by solvothermal method and employed to improve the hydrogen storage properties of MgH 2 . It was found that spherical γ-MnS had the best catalytic activity. The influences of γ-MnS content and milling time on the hydrogen storage performance of MgH 2 were investigated. The initial hydrogen release of MgH 2 -5(γ-MnS)-5 h composite started at 241 ℃, 4.61 wt% of hydrogen was desorbed within 20 min at 270 ℃, and 4.24 wt% of hydrogen was absorbed within 10 min at 150 ℃. The apparent activation energies of hydrogen absorption and desorption of MgH 2 -5(γ-MnS)-5 h composite decreased to 45.1 and 63.6 kJ/mol, respectively. In addition, the composite also exhibited good cycle performance, which could keep stable in 60 cycles. The results of SEM and TEM declared that the catalyst was uniformly distributed on the matrix during the cycling process, and the worm-like morphology of the sample also had a positive effect on the stability of kinetics. XPS analysis of Mn 2p in the samples showed that only characteristic peaks of γ-MnS 2p were observed in the ball-milled samples, but the characteristic peaks of Mn 2p and α-MnS 2p were observed in the first and tenth hydrogenated samples, while only the peaks of Mn 2p were observed in the sixtieth hydrogenated sample. The formation of Mn not only greatly weakened the Mg-H bond, but also led to a slight increase in cycle capacity. Therefore, γ-MnS-doped MgH 2 manifested a good comprehensive hydrogen storage performance.
研究领域:
材料科学
·
能源储存
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xianxi Liu,Meng Ye,Hongying Hou,Zhaowei Sun,Xiaohua Yu,Ju Rong,Shizhao Xiong
Supercapacitor is one of well-known energy-storage devices. However, the electrode materials still restrict its performance and reduce its practical value due to low capacitance or high cost. Therefore, it is of vital importance to pursue the cheap electrode materials with high performance for the next generation supercapacitor. Herein, a series of bimetal sulfide MnS/Cu 2 S/C composite materials were synthesized by hydrothermal reaction and the subsequent calcination with expired manganese gluconate and copper gluconate as the starting materials. Moreover, the effect of Cu 2 S's content on the microstructure and capacitance of MnS/Cu 2 S/C bimetal sulfides was further investigated. All the composites showed the well-organized morphology of about 3 nm metal sulfide nanoparticles embedded in the carbon microspheres with a diameter of about 6 μm. When the feeding ratio was 2:1, the reversible specific capacitances of 2MnS/Cu 2 S/C (MCS-2) in the three-electrode and two-electrode systems were as high as 1206 F/g and 116 F/g at 1.0 A/g, respectively, higher than those of other samples. The synergistic effect of the bimetal sulfides and the joint contributions of high conductivity and low capacitance of Cu 2 S may be responsible for the desirable high supercapacitance. Additionally, the successful conversion of expired gluconates to the useful electrode materials in this work highlighted the ecological benefits and the positive effect on the environmental protection and the resource conservation.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2018
·
IF 4.862
Jie Qiu,Bin Leng,Huajian Liu,Digby D. Macdonald,Angjian Wu,Yanyan Jia,Wandong Xue,Guojun Yu,Xingtai Zhou
The effect of SO 4 2− on the corrosion behavior of 316 L stainless steel (SS) in molten FLiNaK (LiF-NaF-KF: 46.5–11.5–42 mol.%) salt was studied. Results reveal that the SO 4 2− in the salt remarkably accelerates the corrosion of 316 L SS by promoting the dissolution of Cr, leading to increasing intergranular corrosion of the alloy. On the other hand, the results of structural characterization indicate that the SO 4 2− can react with Mn to form MnS at the grain boundaries of the alloy. The galvanic couple between MnS and steel matrix could further accelerate the intergranular corrosion of 316 L SS in molten fluoride salt environments.
研究领域:
材料科学
·
腐蚀科学
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无机化学
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核工程材料
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高温电化学
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2017
·Vol. 7
·期 17
·3802-3811
·
IF 5.773
Hong Liu,Jingchai Meng,Jiang Zhang
In this work, we demonstrated the polyvinylpyrrolidone-assisted solvothermal synthesis of three-dimensional (3D) flowerlike Mn0.8Cd0.2S microspheres assembled from nanosheets. The as-synthesized products were characterized by using various methods including powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microcopy/selected area electron diffraction, elemental mapping, X-ray photoelectron spectroscopy, inductively-coupled plasma emission spectroscopy, N2 adsorption–desorption, UV-vis diffuse reflectance spectroscopy, photoluminescence spectroscopy and photoelectrochemical experiments. The possible formation mechanism of the unique structures was discussed. The resultant 3D flowerlike Mn0.8Cd0.2S architectures exhibit better photocatalytic activities for H2 evolution and CO2 reduction under visible light irradiation than the Mn0.8Cd0.2S nanoparticles. A hydrogen evolution rate of 3560.3 μmol g−1 h−1 and a CH3OH production rate of 10.7 μmol g−1 h−1 are achieved on the flowerlike Mn0.8Cd0.2S microspheres. Several possible reasons for the enhanced photocatalytic activity of the Mn0.8Cd0.2S hierarchical microspheres have been taken into consideration. In addition, the Mn0.8Cd0.2S microspheres are stable during the reaction and can be used repeatedly.
研究领域:
材料科学
·
环境化学
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能源化学
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纳米科技
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催化化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 54
·31333-31342
·
IF 3.049
Shiqiu Zhang,Haiqing Zhang,Fang Liu,Fan Yang,Shengnan Zhou,Kui Zheng,Chunli Chu,Le Liu,Meiting Ju
In order to remove hexavalent chromium (Cr(VI)) efficiently and simplify the adsorbent preparation process, we employed a single step method to prepare a new biochar supported manganese sulfide material. The nanoscale MnS particles were highly soldered on the biochar support surface, and this adsorbent displayed the effective removal of Cr(VI) (98.15 mg L−1) via synergistic effect between adsorption and reduction/precipitation under weak acid conditions (pH = 5.0–6.0). The adsorption kinetic data were described well by the pseudo second-order kinetic model, suggesting that the reaction process was a chemisorption process. The adsorption isotherm data were described well by the Redlich–Peterson model, further suggesting that this reaction was a hybrid chemical reaction-sorption process. In addition, the Dubinin–Radushkevich isotherm model with 8.28, 8.57, and 12.91 kJ mol−1 adsorption energy also suggests that it was a chemisorption process. The simple and eco-friendly preparation process, low-cost, and the high removal efficiency could make it a promising material for the purification of Cr(VI)-contaminated wastewater.
研究领域:
环境科学
·
水处理
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Horizons
·
2025
·
IF 6.6
Liya Tian,Pengju Ma,Wenxiu Zhuang,Yinlong Xu,Lihua Pang,Kai Guo,Ke Ren,Xueli Xu,Xiao Sun,Shunzhen Zheng
While targeted theranostics for cancer remains a pivotal research frontier, conventional ligand conjugation strategies exhibit persistent limitations in off-target accumulation and suboptimal tumor specificity, ultimately failing to achieve reliable detection of early-stage lesions or metastatic nodule while demonstrating insufficient therapeutic payload delivery. In this study, the manganese sulfide (MnS) nanoplatform was synthesized using transferrin (Tf) with tumor-targeting properties as carrier by a simple fabrication method. Notably, compared to clinically prevalent Gd-based contrast agents, Tf-MnS exhibited superior T1-weighted magnetic resonance imaging (MRI) contrast performance, with the longitudinal relaxation (r1) reaching 7.5253 mM-1 •s-1 which was significantly higher than 3.2915 mM-1 •s-1 of Gd-DTPA, and in the MRI of subcutaneous tumors and lung metastatic lesion in mice, the maximum relative signal-to-noise ratios reached 46.33% and 40.33% respectively. Remarkably, upon reaching the acidic tumor microenvironment, Tf-MnS disintegrated to release Mn2+ ions and hydrogen sulfide (H2S). The Mn2+ ions participated in Fenton-like reactions to produce cytotoxic hydroxyl radicals, while H2S concurrently inhibited catalase enzyme activity, thereby alleviating the insufficiency of hydrogen peroxide substrate and amplifying the therapeutic outcome. This synergistic mechanism endowed Tf-MnS with self-enhanced anti-tumor effect, inhibiting both lung metastatic lesion and subcutaneous tumors in mice of the Tf-MnS group, with a tumor inhibition rate of 54.26%. Collectively, this work proposes an innovative strategy for integrating accurate diagnosis and self-augmented therapy of tumors and lung metastatic lesion into a unified nanoplatform, offering a promising methodology for precision oncology.
研究领域:
纳米医学
·
分子成像
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癌症治疗
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诊断成像
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2013
·Vol. 1
·期 14
·2540-2547
·
IF 0
Sheng Cao,Jinju Zheng,Jialong Zhao,Lin Wang,Fengmei Gao,Guodong Wei,Ruosheng Zeng,Linhai Tian,Weiyou Yang
We demonstrate a strategy for the growth of Mn2+ ion doped cadmium based II–VI semiconductor quantum dots (QDs) with a designed buffer layer of ZnS (MnS/ZnS/CdS or Mn:CdS QDs), which aims to meet the challenge of obtaining highly efficient and well-resolved Mn2+ ion emission. First, small, high quality MnS cores are obtained by using thiols to replace conventional alkyl amines as capping ligands. Then a buffer layer of ZnS with a tailored thickness is introduced to the QDs before the growth of CdS shells to reduce the size mismatch between the Mn2+ (dopant) and Cd2+ (host) ions. The fabricated MnS/ZnS/CdS core/shell QDs exhibit a high PL QY of up to 68%, which is the highest ever reported for any type of Mn2+ ion doped cadmium based II–VI semiconductor QD. The photoluminescence (PL) of the QDs consists of well-resolved Mn2+ ion emission without any detectable emission from the CdS band edge or surface defects. In addition, our MnS/ZnS/CdS QDs cannot only be made water-soluble, but can also be coated by ligands with short carbon chain lengths, nearly without cost to the PL QY, which could make them strong candidates for practical applications in biology/biomedicine and opto/electronic devices.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
半导体物理
·
光物理
·
生物成像
·
生物医学应用
✓ 已验证
DOI
ACS Nano
·
2024
·
IF 15.8
Guiqi Ma,Xinyu Zhang,Kunlong Zhao,Shuxuan Zhang,Ke Ren,Mengyao Mu,Chenyu Wang,Ximing Wang,Hui Liu,Jian Dong,Xiao Sun
Rational structure design benefits the development of efficient nanoplatforms for tumor theranostic application. In this work, a multifunctional polydopamine (PDA)-coated manganese sulfide (MnS) nanocluster was prepared. The polyhydroxy structure of PDA enhanced the water interaction with pH-responsive MnS nanoclusters via hydrogen bonds. At pH 5.5 conditions, the spin–lattice relaxation rate of MnS nanoclusters dramatically increased from 5.76 to 19.33 mM–1·s–1 after the PDA coating, which can be beneficial for efficient tumor magnetic resonance imaging. In addition, PDA endowed MnS nanoclusters with excellent biocompatibility and good photothermal conversion efficiency, which can be used for efficient tumor photothermal therapy (PTT). Furthermore, MnS nanoclusters possess the ability to release H2S in the acidic tumor microenvironment, effectively inhibiting mitochondrial respiration and adenosine triphosphate production. As a result, the expression of heat shock protein was obviously reduced, which can reduce the resistance of tumor cells to photothermal stimulation and enhance the efficacy of PTT. The released Mn2+ also displayed efficient peroxidase and glutathione oxidase-like activity, effectively inducing tumor cell ferroptosis and apoptosis at the same time. Therefore, this nanoplatform could be a potential nanotheranostic for magnetic resonance contrast enhancement and synergistic ferroptosis–PTT of tumors.
研究领域:
纳米技术
·
生物医学工程
·
癌症研究
·
材料科学
·
诊疗学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenpeng Cao,Kai Du,Changzhan Li,Pengcheng Liu,Mingming Xie,Fangyan Cui,Chunhao Sun,Mingshan Han,Jinshu Wang,Yuxiang Hu
Rechargeable aluminum batteries (RABs) are promising in the energy storage fields owing to their high theoretical capacity, abundant resources, and high safety. However, the intrinsically high-charge-density of aluminum ions (Al 3+ , 364C mm −3 ), inevitably leads to large lattice strain and low electron transfer efficiency towards conventional cathodes, such as transition metal sulfides, with inferior performance. To overcome the inherent confinement, we first-timely propose the high-entropy sulfides (HESs) as the novel cathodes in RABs, exhibiting robust lattice tolerance and accelerated multi-path electron transfer. Benefiting from the interaction of multiple atoms and inherent long-range disorder in HESs, broadened atomic d-band ( ɛ d ) endows the local “electronic delocalization effect” with a high rate-capacity (above 193.0 mAh g −1 at 5.0 A g −1 ). Moreover, the well-constructed cathode forms a strong lattice strain field, providing one of the best long-term stabilities (0.004 % per cycle capacity decay over 12,000 cycles at a high current density of 5.0 A g −1 ) in RABs. Overall, the newly developed HESs with lattice distortion and cocktail effect endowing tunable electronic structures pave the new direction for RABs and other multivalent ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
Joule
·
2025
·
IF 35.4
Xinran Li,Tengsheng Zhang,Gaoyang Li,Boya Wang,Hongrun Jin,Yanyan Zhang,Xin Liu,Yutong Feng,Yifeng Wang,Wanhai Zhou,Jingwen Zhao,Wei Li,Hongjin Fan,Dongyuan Zhao,Dongliang Chao
Aqueous manganese ion batteries (AMIBs) have recently garnered attention due to the abundance of manganese and their intrinsic safety. However, the development of current AMIBs remains plagued by restrictive actual capacities. Herein, we propose an energetic Mn 2+ -S redox electrochemistry with a solid-liquid-solid redox pathway. Operando X-ray absorption fine spectroscopy and synchrotron X-ray diffraction unveil the Mn 2+ storage mechanism of S 8 ↔ MnS 4 ↔ MnS 2 ↔ MnS. A capacity of 1,242 mAh g −1 with a high sulfur utilization of 74.3 wt % can be achieved, surpassing the capacity limitations of previously reported AMIBs. As a proof of concept, a system intergrating the S/MnS and MnO 2 /Mn 2+ redox couples delivers an energy density of 396 Wh kg S+MnO2 −1 and cycles for 800 cycles stably at 4 A g −1 . We have elucidated the mechanism underlying the redox of Mn 2+ -S and may open an avenue for the next high-energy AMIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）