JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Hanmeng Liu,Zhen Li,Zhixia Yao,Yaosheng Liu,Qifang Zhang,Yujing Sun,Zhuang Li
The three-dimensional (3D) MnS/Co 9 S 8 (MCS) micro-flowers composites with serrate edges on Ni foam were successfully prepared by a facile hydrothermal method . The time-dependent experiments showed that the structure was assembled by two-dimensional (2D) nanobelts . The serrate edges structures of MCS can enrich electroactive sites and enhance the specific capacity (1070 C/g at 1 A/g). In addition, MCS exhibited good cycling stability of 86% after 1000 cycles. Further, an asymmetric supercapacitor device was constructed by using MCS as the positive electrode and activated carbon (AC) as the negative electrode, which exhibited high energy density of 34.1 Wh/kg at power density of 400 W/kg with good cycling stability. The superior electrochemical performances demonstrated that the micro-flowers composites with serrate edges could offer a new opportunity in developing energy storage devices.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xinmeng Yu,Xiaorong Chen,Dandan Yue,Fenghua Zheng,Qingyu Li,Zhaoling Ma,Hongqiang Wang
Aiming to achieve high-efficiency bifunctional catalysts, doping engineering is applied to construct bifunctional catalysts for oxygen electrodes in Zn-air batteries to strengthen the catalytic kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, MnS doped cobalt nitride catalyst (MnS/CoN x ) with divergent fiber morphology is prepared by low temperature nitriding for the self-assembling layered double hydroxides (LDH). The MnS/CoN x shows excellent electrical conductivity and improved catalytic activity on ORR and OER with low overpotential of 290 mV at 10 mA cm −2 and a good half-wave potential of 0.80 V in ORR compared with CoNx and MnO/CoN x . The contribution of the increased bifunctional catalytic performance is possible from the more active center Co 3+ and Mn 4+ , and the elevated electron transport resulted from the opportune high conductive MnS doping. The MnS/CoN x catalyst-driven Zn-air battery achieves a higher power density of 228 mW cm −2 and the excellent long-term stability of 500 h at 20 mA cm −2 far surpassing the commercial Pt/C+RuO 2 catalyst.
研究领域:
材料科学
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电化学
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能源存储与转换
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 23
·期 36
·6291-6299
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IF 3.545
Chongyao Li,Weijia Wang,Ying Yang,Sheng Liu,Congtan Zhu,Qinghua Tian
Nanoheterostructures synthesized by cation exchange present the integration of synergetic designs into high-quality, well-defined catalysts for enhanced photocatalytic hydrogen evolution. In this study, we synthesise core–shell Cu1.94S–MnS nanoheterostructured photocatalysts using a cation exchange reaction by employing djurleite Cu1.94S nanospheres as starting templates. Under simulated sunlight, the heterostructures exhibit a hydrogen evolution efficiency as high as 878.1 μmol h−1 g−1, representing 60-fold and 41-fold enhancement compared with pure Cu1.94S and MnS, respectively. As verified by photoelectrochemical characterization, the improved hydrogen production activity of the Cu1.94S–MnS nanoheterostructures can be attributed to their stronger light response characteristics and more effective charge transfer ability, which opens up opportunities to promote the photocatalytic performance using rationally designed nanostructures.
研究领域:
材料科学
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纳米技术
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光化学
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催化
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengna Dong,Chan Xue,Xinhui Yang,Hongfang Liu,Hong Wang,Yonggui Liao,Yajiang Yang,Xiangliang Yang,Qin Wang
cGAS-STING pathway, an important innate immune signaling pathway, has attracted extensive attention in anti-tumor immunotherapy research. However, the limited delivery ratio of STING agonists and lactate-induced lactylation present significant challenges in advancing cGAS-STING antitumor immune response. Herein, natural anaerobic sulfate-reducing bacteria (SRB) are utilized as a biofactory to in situ biosynthesize MnS nanoparticles (MnS@SRB) for amplifying MnS-activated cGAS-STING anti-tumor immune responses through continuous lactate depletion by SRB. After intravenous injection, MnS@SRB can actively migrate to tumor tissues via SRB-mediated hypoxia targeting, further continually release H 2 S and Mn 2+ in the acidic tumor microenvironment. H 2 S stimulates mitochondrial dysfunction and induces mitochondrial DNA leakage, which is then recognized by cGAS to activate STING signaling pathway. Mn 2+ further augments STING-mediated secretion of type I interferons and inflammatory factors. Importantly, MnS@SRB can effectively metabolize lactate in tumors, thereby alleviating cGAS lactylation for amplifying cGAS-STING immune response and regulating macrophage phenotype to M1-type, reducing the tumor-infiltrating regulatory T cells and increasing CD8 + T cells level, further enhancing both adaptive and innate immunosurveillance. As a result, MnS@SRB effectively inhibite the tumors growth and metastasis. Therefore, MnS@SRB-based delivery system enables efficient cGAS activator delivery and tumor immunosuppressive microenvironment remodeling, thereby opening a new avenue for synergistically enhanced STING activation.
研究领域:
生物医学工程
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免疫学
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肿瘤学
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产品关联
DOI
高影响因子
Advanced Science
·
2019
·Vol. 6
·期 20
·1901461
·
IF 15.804
Xiaojuan Huang,Guoying Deng,Yong Han,Guizhu Yang,Rujia Zou,Zhiyuan Zhang,Shuyang Sun,Junqing Hu
Stimuli-responsive nanomedicines have become a recent research focus as a candidate for cancer treatment because of their effectiveness, sensibility, and minimal invasiveness. In this work, a novel nanosystem is developed based on Cu 2− x S@MnS core–shell nanoparticles (CSNPs) in which the Cu 2− x S core serves as a photosensitizer to generate hyperthermia and reactive oxygen species (ROS), and the MnS shell is used in H 2 O 2 -responsive O 2 production. Cu 2 −x S@MnS CSNPs with an independent core and shell ratio are synthesized by a controllable hot-injection method, resulting in an optimal photothermal (PT) effect with a PT conversion efficiency of up to 47.9%. An enhanced photodynamic (PD) effect also occurs in an H 2 O 2 environment. More significantly, in vivo experiments demonstrate that Cu 2 −x S@MnS CSNPs can mediate tumor shrinkage in both HeLa tumor cell line-derived xenograft (CDX) and head and neck squamous cell carcinoma (HNSCC) patient-derived xenograft (PDX) models, with the capability of being used as a T1-enhanced magnetic resonance (MR) contrast agent. These results suggest the great potential of as-prepared Cu 2 −x S@MnS CSNPs as photo/H 2 O 2 -responsive therapeutic-agents against tumors, even in a complicated and heterogeneous environment, thus promoting the clinical translation of nanomedicine.
研究领域:
生物医学工程
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纳米医学
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癌症治疗
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Minghong Rui,Xiaokang Lu,Yuan Li,Sanmin Liu,Xiuhong Jin,Sumei Wang
Antimony sulfide (Sb2S3) has emerged as a promising photoactive material due to its high light absorption capability. However, the organic Spiro-OMeTAD hole transport layer (HTL) poses a severe challenge to highly efficient Sb2S3 solar cells because of its high cost and poor stability. To address these issues, a MnS–PbS composite HTL was fabricated via the coevaporation process for the first time. By tuning the MnS:PbS ratio, the microstructure, carrier transport, and energy band alignment at the Sb2S3/ MnS–PbS interface were optimized. The high carrier mobility of PbS films and the high carrier concentration of MnS films enabled the MnS–PbS composite HTL possessing the superior conductivity. Devices employing the optimized MnS–PbS HTL achieved a champion power conversion efficiency of 6.60%, with significant improvements in short-circuit current, fill factor, and photostability due to the enhanced hole transport, suppressed recombination, and reduced photocurrent loss. This facile coevaporated composite HTL demonstrates a significant potential for efficient fully inorganic Sb2S3 solar cells.
研究领域:
光伏技术
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材料科学
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半导体器件
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薄膜技术
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DOI
高影响因子
FUEL
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2023
·
IF 7.4
Jie Yu,Zhuoran Hou,Huayu Zhang,Xinsheng Zhou
The fabrication of electrode materials with a high specific capacitance is essential for the development of enhanced performance supercapacitors. A novel binder-free electrode material, composed of MnS/Ni 3 S 2 and Co(OH) 2 , was synthesized on nickel foam by hydrothermal, sulfuration, and electrodeposition techniques. The MnS/Ni 3 S 2 exhibited a unique flower-like structure, resulting in a high specific capacitance of 1780 F g −1 at 1 A/g. By optimizing the synthesis conditions through several characterization and electrochemical tests, the MnS/Ni 3 S 2 @Co(OH) 2 composite was obtained, which displayed an ultrahigh specific capacitance of 2495 F g −1 at 1 A/g and a capacitance retention rate of 86.1% after 5000 cycles at 10 A/g in three-electrode system. The synergistic coupling of MnS/Ni 3 S 2 and Co(OH) 2 , along with the conductive nickel foam substrate, donated towards the excellent electrochemical performance. Furthermore, the MnS/Ni 3 S 2 @Co(OH) 2 //AC asymmetric supercapacitor (ASC) device was constructed with MnS/Ni 3 S 2 @Co(OH) 2 as positive electrode, activated carbon (AC) as negative electrode and 1 M KOH solution as electrolyte, demonstrated a high energy density of 68.6 Wh kg −1 at 750 W kg −1 and excellent cycle stability with 91.2% capacitance retention after 10,000 cycles at 15 A/g. The outstanding electrochemical properties observed in both the pre-electrodeposition and post-electrodeposition samples indicate the effectiveness of reasonable design and construction of composite as a pathway for producing electrode materials with exceptional performance.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2020
·
IF 8.758
Qian Liu,Shao-Jian Zhang,Cheng-Cheng Xiang,Chen-Xu Luo,Peng-Fang Zhang,Chen-Guang Shi,Yao Zhou,Jun-Tao Li,Ling Huang,Shi-Gang Sun
Cubic N,S codoped carbon coating MnS–FeS2 composites (MnS–FeS2@NSC) with a hollow structure were prepared and used as anode materials for sodium-ion batteries. MnS–FeS2@NSC exhibits excellent cycle performance and high rate capability and delivered a reversible capacity of 501.0 mAh g–1 after 800 cycles at a current density of 0.1 A g–1 with a capacity retention of 81%. More importantly, the MnS–FeS2@NSC anode holds long-term cycle stability; the capacity can remain 134.0 mAh g–1 after 14 500 cycles at 4 A g–1. Kinetic analysis demonstrated that Na+ storage follows a pseudocapacitive dominating process, which is ascribed to the origin of the outstanding rate performance of the MnS–FeS2@NSC material. The enhancement of electrochemical performance is attributed to the hollow structure and the N,S codoped carbon coating structure, which can reduce the diffusion distance for sodium ions and electrons, alleviate volume expansion during sodium-ion insertion/extraction, and retain the structural integrity effectively. Furthermore, a two-step sodiation processes with FeS2 sodiation prior to MnS was demonstrated by X-ray diffraction (XRD), and the electrochemical impedance spectroscopy (EIS) spectra might indicate that the accumulation of the metallic elements in the preconversion reaction can accelerate the transfer of electrons and ions in the further conversion process.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Environmental Science-Nano
·
2024
·
IF 5.8
Xiaoqian Ma,Yu Liu,Yi Zhao,Xiaohong Chen,Junyang Leng,Anlong Zhang,Daomei Chen,Kai Xiong,Jiaqiang Wang
The photocatalysis self-Fenton systems by coupling photocatalysis and Fenton technology overcome the limitations of conventional Fenton reactions by in-situ generation and activation of H2O2. While a considerable amount of iron sludge is still produced. In this study, we develop a novel self-cycled photocatalytic Fenton process for the degradation of organic pollutants via an iron-nickel foam-supported MnS nanosheet (MnS/INF). Without the external addition of both H2O2 and ferrous ions, MnS/INF 3D Z-scheme heterojunction exhibited an extremely high H2O2 production rate of 25.4 mM h-1 g-1 under visible light irradiation, which is 2119 times than those reported photocatalysis self-Fenton system in the literature. The photogenerated electrons of MnS/INF can participate in the Fe2+/Fe3+ cycle process to promote H2O2 activation, significantly enhancing the catalytic performance owing to the formation of a 3D Z-scheme heterojunction. DFT calculations indicate that MnS/INF can lower the energy barrier of *OOH formation and result in an enhanced photocatalytic activity of H2O2 production. Magnetic MnS/INF was easily recycled, remained very stable, and mitigated the extra undesirable Fe-containing sludge and only little iron sludge (0.43 mmol/L) is produced after nine cycles of reuse. Furthermore, a large (100 cm2) MnS/INF was used for an unassisted solar-driven in situ photocatalytic H2O2 production and rapid degradation of RhB with requirements for only water, oxygen and sunlight. In addition, MnS/INF also exhibited good performance in real wastewater containing fluoronitrobenzene from a factory (initial COD 2310 mg/L) and wastewater from sewage treatment station (initial COD 106 mg/L). This work may provide leverage to minimize iron sludge from the Fenton reaction's source.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wenjian Shen,Jing Zhang,Shiyu Wang,Heping Du,Yiwen Tang
Interface passivation layer deposited onto photoanodes has been proven to be an available way to suppress charge recombination and enhance the power conversion efficiency in quantum dot-sensitized solar cells. In this work, the ZnS-MnS composites layers inserted in ZnO/CdS nanotubes photoanodes interface is firstly fabricated via ion-exchange and chemical bath deposition methods, simultaneously. By inserting the ZnS-MnS composites, electron back transfer is efficiently hindered. In addition, the uniform ZnS-MnS layer effectively blocks the direct contact between the polysulfide electrolyte and ZnO nanotubes, which inhabits the recombination of electron-hole pairs occurred at the interface. Besides, the MnS layer is in favour of the CdS quantum dots in higher load, profiting the light absorption intensity in the visible light region. Thus ZnO/ZnS-MnS/CdS nanotubes quantum dot-sensitized solar cells have efficiency of 3.62%, which is much higher than that of the solar cell with ZnS passivation layer (2.33%). This work demonstrates that constructing ZnS-MnS interface passivation layer with a proper band gap structure is a promising approach to enhance the performance of quantum dot-sensitized solar cells.
研究领域:
材料科学
·
纳米技术
·
太阳能
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Kexin Wei,Fan Yang,Yang Sun,Chunhui Yu,Junpu An,Kaiyi Chen,Shijia Li,Jiabao Guo,Yongfeng Li
The development of efficient and low-cost non-precious metal bifunctional oxygen electrocatalysts remains a critical challenge for advancing zinc-air batteries. In this study, we designed and synthesized three-dimensional carbon nanofiber catalysts integrated with sulfur- and nitrogen-doped carbon anchoring FeS/MnS heterostructures, leveraging an interfacial engineering approach. Originating from this strategy, the optimized FeS/MnS@CNFs shows a higher half-wave potential (E 1/2 ) of 0.88 V for ORR and a lower overpotential (E j=10 ) of 230 mV at 10 mA cm −2 for OER. The theoretical studies elucidate that the significant work function difference (0.43 eV) between FeS and MnS induces a built-in electric field at their heterointerface. This field drives electron transfer from MnS to FeS, which consequently strengthens the covalency of Fe S bonds and significantly enhances the adsorption capability for the *OOH intermediate species. When employed as the air-cathode catalyst, the FeS/MnS@CNFs-based zinc-air battery achieved a remarkable peak power density of 223 mW cm −2 and maintained stable operation for over 280 h at 10 mA cm −2 . Further theoretical modeling of the heterostructure elucidated that the built-in electric field modulates Fe S bond energies through electronic rearrangement, providing a fundamental explanation for the enhanced oxygen electrocatalytic performance and improved structural stability.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yu Wang,Yuxin He,Yujing Chi,Peiji Yin,Lishan Wei,Wenwen Liu,Xinyao Wang,Han Zhang,Haiyan Song
Photocatalytic H 2 O 2 production is a green and sustainable technology, which still exposes the issues of excessive dependence on organic electron donors and pure O 2 , and lacking effective use. It is necessary to develop more efficient and more economical photocatalysis system for H 2 O 2 production. Here, we construct a S-scheme p-n heterojunction from the p-type MnS and the n-type protonated g-C 3 N 4 (PCN) semiconductors for photocatalytic H 2 O 2 production and achieve the in situ use of H 2 O 2 for oxidative degradation of oxytetracycline (OTC). The PCN/MnS composite synthesized by a one-step method well maintains a nanosphere structure of α-MnS and load the PCN on the sphere surface to form a heterojunction with strong interaction. PCN/MnS exhibits the improved photogenerated charge separation and electron transfer efficiency. An optimal photocatalyst can produce 669.6 μM of H 2 O 2 for 6 h without using the electron donors and the pure O 2 gas. The mechanism proposed the contribution of a S-scheme p-n heterojunction forms between PCN and MnS. The electrons in conduction band (CB) of MnS are responsible for the major single-electron reduction of •O 2 - radicals and the auxiliary two-electron reduction of O 2 for H 2 O 2 production, while the holes in valence band (VB) of PCN further promote the separation of photocarriers. The photogenerated H 2 O 2 can be effectively used as an in-situ oxidant to achieve 82.2% degradation of OTC in water within 80 min. The •O 2 - radicals which originate from the in situ decomposition of H 2 O 2 over PCN/MnS mainly contribute to the OTC oxidation .
研究领域:
材料科学
·
环境科学
·
光化学
·
催化
✓ 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）