Solar RRL
·
2020
·Vol. 5
·期 6
·2000427
·
IF 7.527
Yiqun Li,Shipeng Wan,Cheng Lin,Yujie Gao,Yuan Lu,Luyang Wang,Kan Zhang
Sufficiently utilizing photogenerated electron/hole pairs for a coupled redox enables green, sustainable, and low-cost photocatalysis. Herein, a series of MoS 2 /Cd x Zn 1− x S photocatalysts with uniform 2D/2D structure are reported for solar water–reductive H 2 products coupled with the degradation of polyethylene terephthalate (PET) plastic. The MoS 2 /Cd 0.5 Zn 0.5 S heterojunction with a loading mass of 4.3 wt% MoS 2 exhibits the best H 2 evolution rate of 15.90 mmol g −1 h −1 in an aqueous solution due to its appropriate redox ability, great light absorption, and carrier separation abilities. Then, the oxidation products of PET are analyzed by 1 H-NMR spectroscopy, which demonstrates the PET being efficiently degraded to molecule compounds, such as formate and acetate. The work provides a feasible solution to the problem of plastic pollution and meets the demand for sustainable clean energy simultaneously.
研究领域:
材料科学
·
环境科学
·
能源科学
·
化学
✓ 已验证
DOI
高影响因子
iScience
·
2023
·
IF 5.8
Xiai Zhang,Wenquan Zhang,Xinwei Zhang,Jun Li,Tong Wang,Qikui Fan,Hao Zhu,Zhimao Yang,Chuncai Kong
Peroxymonosulfate (PMS)-based advanced oxidation processes in liquid phase systems can actively degrade toluene. In this work, the catechol structural surfactant was introduced to synthesize the dispersed and homogeneous CoFe 2 O 4 nanospheres and embedded into MoS 2 nanoflowers to form magnetically separable heterojunction catalysts. The innovative approach effectively mitigated the traditionally low reduction efficiency of transition metal ions during the heterogeneous activation process. In CoFe 2 O 4 /MoS 2 /PMS system, the toluene removal efficiency remained 95% within 2 h. The contribution of SO 4 ⋅- , ·O 2 - , ·OH, and 1 O 2 was revealed by radical quenching experiment and electron paramagnetic resonance spectroscopy. The results illustrated that MoS 2 offers ample reduction sites for facilitating PMS activation via Fe 3+ /Fe 2+ redox interactions. Furthermore, an investigation into the toluene degradation pathway within the CoFe 2 O 4 /MoS 2 /PMS system revealed its capability to suppress the formation of toxic byproducts. This ambient-temperature liquid-phase method presented promising route for the removal of industrial volatile organic pollutants.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Chong Li,Ran Tao,Zhiqiong Li,Jiahui Liao,Chen Fu,Jikai Zhang,Huiling Ong,Chenze Lu,Jingting Luo,Yongqing Fu
Humidity sensing is crucial for food production, environmental monitoring, microelectronic manufacture, and common living conditions. Thus, there is a high demand for development of high-performance humidity sensors with good stability, high precision and fast responses. In this study, Love wave mode humidity sensors were prepared using quartz-based SAW devices coated with composite sensing layers of accordion-like Ti 3 C 2 T x , MoS 2 nanoflowers and MoS 2 @Ti 3 C 2 T x hierarchical structure, respectively. The hydrophilic Ti 3 C 2 T x was used to provide abundant surface functional groups for adsorption of water molecules, and the hydrophobic MoS 2 enabled rapid adsorption and desorption of water molecules from the surface of MoS 2 @Ti 3 C 2 T x . The MoS 2 @Ti 3 C 2 T x coated Love wave humidity sensor presented an ultra-high sensitivity of 0.67 kHz/% RH in the wide humidity range from 11.3% RH to 97.3% RH, mainly attributed to the hierarchical structure of MoS 2 @Ti 3 C 2 T x with large specific surface areas, abundant adsorption sites and superhydrophilicity. Meanwhile, this Love wave humidity sensor showed fast response/recovery rates, great repeatability and long-term stability, indicating its great prospects in humidity detection applications.
研究领域:
材料科学
·
传感技术
·
环境监测
·
微电子
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Muhammad Saleem,Abdur Rahim,Baiju Lyu,Liqi Ma,Muhammad Zahid,Xiaoyu Zhang,Mingyue Li,Yuzhi Song,Mei Liu
Surface-enhanced Raman scattering (SERS) and photoluminescence (PL) synergism offer unprecedented analytical capabilities, yet existing substrates face challenges in balancing sensitivity and signal differentiation. Transition metal dichalcogenides like MoS 2 show promising SERS and PL performance but suffer from limited charge transfer due to their ultra-flat surfaces. In this study, we explored metal phthalocyanine (MPcs)/MoS 2 heterostructures to synergize chemical enhancement and localized plasmon resonance, with the central metal atom (Cu, Zn, Co) acting as a key modulator. Notably, the CuPc/MoS 2 substrate exhibited exceptional SERS and PL performance, achieving a low limit of detection (LOD) of SERS for methylene blue (MB) and rhodamine 6G (R6G) molecules up to 10 −11 and 10 −13 M with enhancement factors (EFs) 1.99 × 10 7 and 3.52 × 10 9 , respectively, outperforming ZnPc- and CoPc-based systems. Furthermore, it showed an optimal LOD of 4.5 × 10 5 ng/L for 100 nm polystyrene nanoparticles. This study elucidates the influence of the central metal atom in MPcs on the SERS and PL properties of MPc/MoS 2 composites. The results are crucial for the development of efficient SERS substrates and the understanding of the fundamental mechanisms of SERS and PL enhancement, paving the way for development of advanced semiconductor based dual-functional SERS and PL platforms.
研究领域:
分析化学
·
纳米技术
·
材料科学
·
光谱学
·
光学传感
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Ruru Meng,Jinghua Wu,Mengting Zhu,Mingyuan Chang,Nini Zhang,Panlei Cao,Fuli Tian,Xiayin Yao
All-solid-state lithium batteries (ASSLBs) are one of the most promising next-generation energy storage devices due to their superior safety. Nonetheless, one of the primary challenges confronting current solid-state battery designs is the contact failure associated with electrode volume expansion, which causes an increasing interface impedance and ultimately battery failure. Herein, we are dedicated to addressing the issue of volume expansion in the composite cathode during charging and discharging as well as to preventing the separation of electrodes and electrolyte. To achieve this, a two-dimensional MoS2 NS@Li7P3S11 composite cathode was fabricated through a chemical exfoliation process, followed by the in situ deposition of a Li7P3S11 electrolyte. The ultrathin nature of the MoS2 nanosheets effectively counteracts volume expansion during cycling. Concurrently, the in situ formation of the electrolyte layer precludes separation of the electrode and electrolyte components. In addition, the introduction of the metallic 1T phase obviously enhances the electronic conductivity, approximately 2 orders of magnitude higher than bulk MoS2. As a result, ASSLBs equipped with the MoS2 NS@Li7P3S11 cathode demonstrate superior structural stability along with high reversible capacity and outstanding cyclic durability.
研究领域:
材料科学
·
能源存储
·
电池技术
·
固态电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Xiaobing Xu,Liqian Wu,Yuan Sun,Tingting Wang,Xing Chen,Yuanqi Wang,Wei Zhong,Youwei Du
A hybrid approach is beneficial to simultaneously exploit the characteristics of capacitive and transition materials to increase the energy density and power density of supercapacitors . In order to achieve optimal electrochemical performance, by means of a facile hydrothermal co-synthesis, we synthesize a three-dimensional porous aerogel consisting of MoS 2 nanosheets and reduced graphene oxide (rGO) with a controllable composition and morphological structure. The MoS 2 /rGO porous aerogel hybrids working as electrode material for supercapacitors , can efficiently enhance surface charge transport, provide more chemical reaction sites, shorten the migration path for electrons and ions, and facilitate the electrolyte diffusion. Using electrochemical feature in two-electrode configurations and symmetric cell devices, we obtain a specific capacitance of 472 F/g with excellent rate capability and cycling stability (98.9% retention after 30,000 cycles) at the current density of 1.0 A/g. Additionally, our designed supercapacitors are flexible under mechanical deformations , which are useful for the next generation wearable electronic devices.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
柔性电子学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-14
·
IF 5.3
Wang Yilin,Zhao Zixia,Wang Yuefan,Liu Zhifang,Chen Leyao,Qi Jin,Xie Yixi,Zhao Pengcheng,Fei Junjie
GO/Co-MOF/PPy-350 (GPC-350) was synthesized by in situ growth of ultrafine Co-MOF on graphene oxide (GO), followed by encapsulation with polypyrrole (PPy) and calcination at 350.0℃. Meanwhile, MoS 2 -MWCNTs (MoS 2 -CNTs) were produced via the in situ synthesis of MoS 2 within multi-walled carbon nanotubes (MWCNTs). The electrochemically superior GPC-350/MoS 2 -CNTs nanocomposite was then achieved by combining GPC-350 with MoS 2 -CNTs. The polypyrrole encapsulation serves to protect the ultrafine Co-MOF, preventing its degradation during the calcination process. The linear detection range of the GPC-350/MoS 2 -CNTs/GCE sensor for the determination of catechin (CA) in phosphate buffered saline (PBS) was from 5.0 to 1800.0 nM with a limit of detection of 1.78 nM. In addition, the materials were characterized using SEM, EDX, TEM, XRD, EIS, XPS, FTIR, and Raman. These results indicate that the synthesis of GPC-350/MoS 2 -CNTs nanocomposites is successful and CA in beverages samples can be effectively detected using electrochemical sensors. Additionally, the reaction mechanism of CA was explored through cyclic voltammetry. The application of GPC-350/MoS 2 -CNTs nanocomposites in sensor technology offers innovative approaches for the ultrasensitive detection of flavonoids. Graphical abstract
研究领域:
材料科学
·
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Tong Cheng,Qi-Bo Wang,Qin-Qin Xu,Zhen-Hua Han,Jian-Zhong Yin
Mo doping optimizes the electronic structure of ReS2. MoxRe(1–x)S2/MoS2 alloy heterojunction exhibits more favorable application prospects in photodetection due to its higher electrical conductivity than ReS2/MoS2 heterojunction. However, alloy heterojunctions are difficult to prepare controllably using conventional vapor-phase chemical vapor deposition (CVD), and the heterojunction growth mechanism remains unclear. Here, a vapor–liquid–solid temperature-gradient process is proposed to grow alloy heterojunctions within predeposited molten Mo precursor droplets. The sulfuration reaction between Re diffusing into the droplet and Mo atoms facilitates the formation of alloy structures. The growth temperatures TRe and TMo in the temperature-gradient significantly affect the growth patterns and morphology evolution of the heterojunction. The MoS2 morphology in vertical alloy heterojunctions becomes triangular as the growth temperature increases. The dimension of the top MoxRe(1–x)S2 alloy is positively correlated with the Re diffusion concentration. Moreover, lateral alloy heterojunctions and single alloys are formed at lower and higher growth temperature differences between TRe and TMo, respectively. These results provide a controllable strategy for the synthesis of isotropic/anisotropic van der Waals TMDC heterojunctions.
研究领域:
材料科学
·
纳米技术
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Feier Niu,Yueyuan Mao,Nana Wang,Zhenying Feng,Junming Chen,Longqiang Ye,Shaoqing Zhang,Zhongchao Bai,Shixue Dou
Two-dimensional (2D) layered materials have promising prospects for Zn-storage due to their flexible and adjustable interlayer architecture. The strong electrostatic interaction and high diffusion energy barrier, however, lead to slow diffusion kinetics of Zn-ions between the 2D interfaces, limiting its widespread application. Herein, Ti 3 C 2 MXene is introduced into the MoS 2 interlayer by the “pillar effect” to assemble a layer-by-layer inter-embedded structure (L-MoS 2 /Ti 3 C 2 ), which provides sufficient diffusion channels for Zn-ions. DFT computations and GITT confirm that the L-MoS 2 /Ti 3 C 2 exhibits superior Zn-ions migration kinetics. Therefore, L-MoS 2 /Ti 3 C 2 shows excellent long-term cycling stability (75.6% capacity retention after 7000 cycles at 15 A g -1 ) and glorious high-rate capability (107 mAh g -1 at 20 A g -1 ). In addition, the practical application of this material is demonstrated by evaluating the performance of L-MoS 2 /Ti 3 C 2 in flexible quasi-solid-state aqueous zinc ion batteries under various extreme bending conditions, which exhibits good stability under 180° during the 4000 cycles with a capacity retention of 80.5% at 2.0 A g -1 .
研究领域:
材料科学
·
电化学
·
纳米能源
·
储能技术
·
先进电池
✓ 已验证
DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 40
·15558-15565
·
IF 7.367
Zhonggui Gao,Xiao Yu,Jiang Zhao,Wenxia Zhao,Ruimei Xu,Yong Liu,Hui Shen
MoS2 material is considered as a promising anode material candidate in Na-ion batteries (NIBs) due to its high theoretical capacity and layered structure. However, MoS2 nanosheets usually tend to restack or aggregate during the synthesis and cycling process, which makes the advantages of the separated nanosheets disappear. Here, we present a PVP-assisted synthesis for growing long hierarchical MoS2 nanofibers with a length up to 74.5 μm, which were further assembled from intercrossed curly nanosheets with expanded (002) interlayer spacings in the range of 0.62 nm to 1.14 nm. Such architectural design simultaneously combines multiple-scale structural features that are desired for Na-ion storage. On the one hand, the nanosheets can provide a large surface area which is in contact with the electrolyte, a short Na-ion diffusion pathway from the lateral side and facile Na-ion insertion and extraction through the expanded (002) interlayer; on the other hand, the hierarchical MoS2 nanofibers possess a one dimensional structure and a suitable amount of carbon, which can both serve as an electrical highway and prevent them from restacking, resulting in an enhanced electrochemical performance. When used as an anode in NIBs, they demonstrated excellent cycling performance (537 mA h g−1 at 0.1 A g−1 after 200 cycles, and 370 mA h g−1 at 2 A g−1 over 200 cycles) and outstanding rate capability (329 mA h g−1 at 10 A g−1).
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机功能材料
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xu Zhang,Wei Zhang,Lang Ran,Xiangyu Wang,Binze Zou,Lincheng Zhou
A novel non-woven carbon fiber sheet-supported FeSe 2 and MoS 2 -loaded Fenton catalyst (MoS 2 @FeSe 2 @CFS) was synthesized by a two-step hydrothermal process. The MoS 2 @FeSe 2 @CFS exhibited an excellent performance on hydrogen peroxide (H 2 O 2 ) activation at different conditions. Removal efficiency of methylene blue (MB) reached 99.7% within 20 min and the rate constant was higher than those of the most reported iron-containing catalyst/H 2 O 2 systems for MB degradation. The possible activation mechanism of H 2 O 2 by MoS 2 @FeSe 2 @CFS in heterogeneous system was proposed·H 2 O 2 was activated to ·OH by Fe 2+ , and generated Fe 3+ was reduced to Fe 2+ by Mo 4+ . Besides, MoS 2 has great adsorption performance and can aggregate MB near the catalyst, shortening the mass transfer distance. Therefore, the heterogeneous Fenton catalyst MoS 2 @FeSe 2 @CFS has excellent catalytic property. Notably, it was discovered that S might participate in the Fe 3+ /Fe 2+ cycle, which has not been reported in literature. Moreover, MoS 2 @FeSe 2 @CFS have good long-term stability and repeatability because of its high strength and chemical durability. Overall, this work expands the environmental application of iron-containing catalyst and provides a promising heterogeneous Fenton system for removal of contaminants from water.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 16
·1910732
·
IF 16.836
Liang Cao,Xinghui Liang,Xing Ou,Xianfeng Yang,Yangzhong Li,Chenghao Yang,Zhang Lin,Meilin Liu
Regulating nanocrystal composition with multiphase compounds is considered an efficient approach to enhance electrochemical performance and structure stability. Nevertheless, the thorough understanding of significant reaction mechanisms and insight into the reason of enhanced performance is still urgent. In this work, the bimetallic sulfide Bi 2 S 3 /MoS 2 heterogeneous with abundant phase boundaries is successfully fabricated. The in situ investigation of Na + -storage mechanism confirms that enormous phase boundaries are self-generated by composition optimization and rational structural design. More importantly, the full understanding of abundant phase boundaries on the enhanced electrochemical properties is explicitly unraveled by combining theoretical analysis and experimental results. It confirms that the interior self-built-in electric-field induced by phase boundaries can enhance the reaction kinetics and boost the charge transfer. Besides, the Bi/Na 2 S interface is well-maintained by the homogeneously distributed phase boundaries, effectively improving the conversion/alloying reversibility and keeping integrity without agglomeration and pulverization. As expected, the Bi 2 S 3 /MoS 2 composite exhibits superior rate capability and long-cycling stability (323.4 mAh g −1 after long-term 1200 cycles at ultrahigh rate of 10 A g −1 ). This strategy of constructing sufficient phase boundaries sheds light on the enhancement of reversibility and stability for other advanced conversion/alloying-type anode materials.
研究领域:
材料科学
·
电化学
·
储能
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）