ACS Catalysis
·
2018
·
IF 11.384
Wenjing Song,Shijie Zhou,Shihua Hu,Weikun Lai,Yixin Lian,Jianqiang Wang,Weimin Yang,Meiyu Wang,Peng Wang,Xingmao Jiang
We propose a surface atom engineering strategy to obtain a well-dispersed Co-incorporated MoS2 nanomaterial, which maximizes the Co–Mo–S phase and achieves high activity in hydrodeoxygenation (HDO) of lignin-derived phenolic compounds. It was shown by X-ray diffraction, transmission electron microscopy, Ramanspectroscopy, high-sensitivity low-energy ion scattering, and X-ray photoelectron spectroscopy that plenty of accessible Co–Mo–S phase were generated on the catalyst surface, which could accelerate the hydrodeoxygenation (HDO) reaction. Notably, most of the Co–Mo–S phases were located at the top surface of MoS2, which explained the full deoxygenation performance of the CoMoS catalyst. Moreover, among the diverse lignin-derived oxygenated compounds, phenolic hydroxyl HDO was structure-sensitive relative to diphenyl ether over Co-doped MoS2 catalysts. Effective conversion of mixed phenols to corresponding arenes such as BTX (benzene, toluene, and xylene) with high yield (>85%) and stable recyclability was exhibited by using the CoMoS catalyst with highly dispersed Co–Mo–S phase.
研究领域:
化学工程
·
材料科学
·
催化反应
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产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Lulu Tian,Yuanping Huang,Chaoran Li,Shuang Chen,Jiayu Peng,Liyong Niu,Zhijun Zhang
Complex operating conditions pose greater challenges for lubricants, making the development of multi-functional additives a trend. This research introduces a multifunctional Cu-Mo-S nanoparticle (CMS) additive, synthesized using a unique one-pot in situ method. The CMS significantly improved the tribological performance and oxidation stability of base oils. Specifically, 0.5 wt% CMS manifested a remarkable reduction in the friction coefficient and wear volume of ester-based oils by 74.75% and 95.91%, accompanied by a noteworthy increase in the extreme pressure capabilities exceeding 50%, outperforming the individual copper nanoparticles, organic molybdenum, and their mixtures. The remarkable results are attributed to the distinctive structure of CMS, which decomposed during the friction process, forming a continuous friction film containing copper, molybdenum, and iron compounds.
研究领域:
材料科学
·
化学工程
·
机械工程
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Ning Li,Wenwen Zhao,Linping Li,Yangqin Gao,Lei Ge
Photocatalysts with hollow structures have drawn great interest owing to their high specific surface area, which can enhance the photocatalytic performance. Herein, we designed the hollow cubic Cu2–xS@Ni–Mo–S nanocomposites by vulcanizing from the Cu2O template and loading the Ni–Mo–S lamellas. The Cu2–xS@Ni–Mo–S composites greatly improved the photocatalytic hydrogen performance. Among them, Cu2–xS–NiMo-5 achieved the optimal photocatalytic rate of 1326.07 μmol/g h, which is approximately 3.85 times higher than that of hollow Cu2–xS (344 μmol/g h) and had good stability for 16 h. The enhanced photocatalytic property was attributed to the metallic behavior of bimetallic Ni–Mo–S lamellas and the LSPR (localized surface plasmon resonance) effect of Cu2–xS. The bimetallic Ni–Mo–S can effectively capture the photogenerated electrons and quickly transfer-diffuse to produce H2. Meanwhile, the hollow Cu2–xS not only provided many more active sites to take part in the reaction but also introduced the LSPR effect to increase the solar utilization. This work provides valuable insights into the synergistic effect of using non-precious metal co-catalysts and the LSPR materials to assist in the photocatalytic hydrogen evolution.
研究领域:
材料化学
·
光催化
·
能源科学
·
纳米材料
·
半导体物理
·
可再生能源
·
表面科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Haobin Song,Tong Li,Tingting He,Zhouhao Wang,Daliang Fang,Ye Wang,Xue Liang Li,Daohong Zhang,Junping Hu,Shaozhuan Huang
The intelligent design of catalytic materials with unique architectures has a significant impact on regulating the polysulfides (LiPSs) conversion and boosting the performance of Li − S batteries. Here, starting from 2D catalytic MoS 2 nanosheets and combined with the first-principle calculations, the covalent heterojunction and S vacancy are simultaneously developed in MoS 2 to regulate the electronic structure and improve the LiPSs conversion kinetics. The S vacancy and heterojunction (MoS 2-x -Co 9 S 8-y ) engineering can significantly improve the electrical conductivity of MoS 2 by incorporating shallow donor levels into the MoS 2 . Moreover, the incorporation of Co 9 S 8-y greatly improves the chemisorption ability of heterostructure towards LiPSs. The LiPSs are preferentially adsorbed at the catalytic Mo-S-Co heterojunction, where both Li + and e - are easy to access. The coupled fast Li + /e - transportation of MoS 2-x -Co 9 S 8-y enables direct and fast LiPSs “adsorption-conversion” at the catalytic Mo-S-Co heterojunction with enhanced bidirectional catalytic properties. Due to the ingenious co-engineering of S vacancy and heterointerface, the Li − S cell with MoS 2-x -Co 9 S 8-y /rGO interlayer delivers high sulfur utilization (1382.5 mAh/g at 0.1C), excellent rate capability (710.2 mAh/g at 3C), and long cycle life over 600 cycles (0.06 % capacity decay per cycle). This work demonstrates the great potential of anion deficiency and heterojunction co-construction for high-performance Li − S batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Jingqi Che,Lingying Chen,Mengran Li,Rui Shi,Jiguang Zhang,Yana Liu,Jun Wang,Yunfeng Zhu
Catalytic doping is considered one of the most efficient strategies to achieve superior performance of MgH2, as rationally designed catalytic components can exhibit synergistic effects, thereby optimizing the kinetic pathways. In this study, the hydrothermal method was adopted to prepare clustered Ni–Mo–S catalysts, which were used to modify MgH2 to enhance its kinetic performance. Experimental results demonstrate that the molar proportion of Ni to Mo significantly impacts the modification effect of Ni–Mo–S catalysts on MgH2. Furthermore, the catalyst whose molar ratio of Ni/Mo is 7:2 achieves the optimal catalytic efficiency. Specifically, at 125 °C, MgH2-5 wt % Ni–Mo–S can absorb 4.61 wt % H2 in 1200 s. At a relatively low temperature of 250 °C, it manifests a rapid dehydrogenation rate and releases 5.81 wt % H2 in 2000 s. The hydrogenation (41.98 kJ/mol) and dehydrogenation (86.41 kJ/mol) activation energies of MgH2-5 wt % Ni–Mo–S are reduced by 48.87 and 43.79% compared to as-milled MgH2, respectively. Mechanism analysis suggests that this improvement may be ascribed to the following reasons: (1) The hydrogen pump effect of Mg2Ni/Mg2NiH4 facilitates the hydrogen diffusion; (2) electron transfer between Mo species with different valence states weakens the Mg–H bonds; (3) the in situ formed MgS serves as diffusion channels for hydrogen atoms, expediting hydrogen transport. This work provides a valuable outlook for constructing highly active catalysts for MgH2 hydrogen storage.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Bo Wang,Yanhong Liu,Jinhui Hao,Junbo Zhong,Furong Yu,Kewei Zhang,Hao Shen,Baodong Mao
Earth-abundant metal sulfides attracts large attention in recent years for hydrogen production via electrocatalytic water splitting. However, most works have been limited to the acidic condition, whereas the hydrogen evolution reaction (HER) in alkaline condition has rarely been discussed. Here we present an effective strategy for the growing of Co-Mo-S catalysts on carbon cloth via the controllable incorporation of cobalt into MoS 2 with L-cysteine and phosphomolybdic acid to achieve the synergistic interaction of CoS 2 and MoS 2 . The optimized Co-Mo-S catalysts (Co:Mo=1:2) showed a largely improved HER activity with an overpotential of 92 mV at current density of 10 mA cm -2 and Tafel slope of 82 mV dec -1 . The origin of the activity enhancement was investigated through a series of characterizations, where the synergetic effect of the intrinsic fast HER kinetics of metallic CoS 2 and the high active surface area of MoS 2 plays a crucial role. With appropriate amount of cobalt, the Co-Mo-S catalysts show a relatively uniform distribution on the carbon cloth to ensure the large surface area, whereas excessive cobalt results in the formation of the large CoS 2 particles with low HER activity from the low active surface area. Further electrochemical measurements demonstrated that the combination of larger exchange current density of CoS 2 and the high electrochemical double–layer capacitance (proportional to the active surface area) of MoS 2 together contributed to the HER activity enhancement of the Co-Mo-S catalysts. The Co-Mo-S/CC catalysts also show robust stability in alkaline solution. Our work provides a more profound understanding and an interesting view for the design of efficient ternary transition metal sulfide HER catalysts in alkaline condition by synergetic optimization of the intrinsic HER kinetics and the electrochemical active surface area.
研究领域:
材料科学
·
化学工程
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Kai Wei,Jiasheng Zhu,Lufang Fan,Weijie Zhang,Huarui Han,Changchang Ma,Kan Hu,Sheng Feng
Here, we constructed S-scheme CdIn 2 S 4 /MoO 3-x (CISMO) photothermal catalyst with interface Mo-S bond for efficient overall water splitting. As expected, hydrogen (H 2 ) and oxygen (O 2 ) evolution rates of the optimized CISMO reached 554.71 and 277.88 μmol·g −1 ·h −1 , respectively, far higher than that of CdIn 2 S 4 (71.78 and 34.45 μmol·g −1 ·h −1 ) and MoO 3-x (0 and 21.83 μmol·g −1 ·h −1 ). Mechanism analysis revealed that the photogenerated carrier transfer followed an S-scheme route. More importantly, the photocatalytic performance of CdIn 2 S 4 /MoO 3-x was highly relevant with the oxygen vacancies (Ovs) in pristine MoO 3-x . In S-rich environment, the Ovs could be imbedded by sulfur (S) for the formation of interface Mo-S bond during CISMO fabrication. Interface Mo-S bridge facilitated the photogenerated carriers transfer between CdIn 2 S 4 and MoO 3-x . Moreover, the metal-free localized surface plasmon resonance effect, originating from the residual Ovs in CdIn 2 S 4 /MoO 3-x , could further enhance the water splitting performance through photothermal conversion. This work shed light on controllable interface chemical bond formation in heterojunction photocatalysts to signally promote the photocatalytic performance.
研究领域:
光催化
·
材料科学
·
能量转换
·
异质结工程
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jiaxing Wu,Panzhe Qiao,Pan An,Mengshen Zhang,Hao Xiu,Zeyu Song,Kadi Li,Yongpeng Cui,Yajun Wang,Wenqing Yao
Non-precious metal cocatalysts and interfacial charge transfer dynamics have long been recognized as critical research frontiers in photocatalytic hydrogen production via water splitting. In this study, we demonstrate a highly efficient Mo 2 C/CdS composite photocatalyst, where the construction of Mo-S chemical bonds significantly enhances interfacial charge transfer. Mo 2 C, as an effective non-noble metal cocatalyst, facilitates the efficient acceptance of photogenerated electrons from CdS. The formation of Mo-S bonds substantially boosts the hydrogen evolution activity. Remarkably, the optimized 7 wt% Mo 2 C/CdS composite achieves a photocatalytic hydrogen production rate of 19.94 mmol h -1 g -1 , representing a 51-fold enhancement compared to pristine CdS (0.39 mmol h -1 g -1 ). Furthermore, this hydrogen evolution rate surpasses that of the Pt/CdS composite by 296%. Synchrotron radiation analysis provides direct evidence for the formation of Mo-S chemical bonds at the interface. Additionally, DFT calculations reveal that the Gibbs free energy change for hydrogen adsorption on Mo 2 C/CdS is reduced by -0.23 eV, further confirming the favorable thermodynamics for hydrogen generation. This study not only validates Mo 2 C as a promising cocatalyst but also highlights its potential to replace the benchmark Pt in photocatalytic water splitting. The findings offer valuable insights by intentionally constructing interfacial chemical bonds to accelerate charge transfer and significantly enhance photocatalytic performance.
研究领域:
材料科学
·
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2019
·Vol. 7
·期 44
·7042-7051
·
IF 5.047
Lianjing Zhao,Zepei Wu,Guannan Liu,Huiying Lu,Yuan Gao,Fangmeng Liu,Chenguang Wang,Jiuwei Cui,Geyu Lu
Nanozymes have drawn considerable attention because of their lower cost, higher stability and convenient preparation compared to protein enzymes. In the present work, Mo, S co-doped carbon quantum dots (Mo-CQDs) as a peroxidase mimic were used to fabricate a cascade colorimetric biosensor to detect cholesterol. The Mo-CQDs possess a robust peroxidase-like activity, and they can easily catalyze 3,3,5,5-tetramethylbenzidine (TMB) to produce an oxidized TMB in the presence of H2O2. The Mo, S doping in the carbon quantum dots (CQDs) notably boosts the yield of CQDs and may facilitate the electron transfer between TMB and H2O2, which further enhances the catalytic activity of CQDs. The colorimetric biosensor based on Mo-CQDs and cholesterol oxidase exhibited excellent selectivity and high sensitivity for cholesterol in the range of 0.01–1.0 mM along with a detection limit as low as 7 μM. The total cholesterol concentration in the serum sample was measured with satisfactory results and read out by the naked eye, indicating the potential application in clinical diagnosis and portable test kits.
研究领域:
生物化学
·
医学诊断
·
纳米材料科学
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 56
·48487-48497
·
IF 4.6
Yong Liu,Bohon Chen,Hanbin Nie,Shuanglin Gui,Jianping Deng
Electrolytic hydrogen production from water is a cost-effective renewable energy technology, but its development is severely constrained by high energy consumption, precious metal catalysts, and low-value products of anode. Given that inexpensive glycerol exhibits a significantly lower redox potential than water, this study developed a 3D coral-like nickel–molybdenum sulfur bifunctional nanocatalyst (Ni–Mo–S/NF) based on nickel foam, which served as both the anode and cathode in an alkaline glycerol electrolyte, enabling the simultaneous production of high-value formate at the anode and high-purity hydrogen at the cathode. Notably, in a two-electrode system, the alkaline glycerol electrolyzer required only 1.37 V to achieve a current density of 10 mA cm−2, which was 280 mV lower than that of an alkaline aqueous solution system, indicating an about 17% reduction in energy consumption compared to conventional water electrolysis. Meanwhile, this system reached a faradaic efficiency of 95.0% for formate production and 99.6% for hydrogen evolution. Benefiting from the outstanding performance of the noble-metal-free Ni–Mo–S/NF catalyst, the proposed technology for simultaneous formate and hydrogen production via glycerol electrooxidation offers a novel pathway for the green production of high-value chemicals and energy-saving hydrogen generation.
研究领域:
电化学
·
可再生能源
·
催化
·
材料科学
·
可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jiaqi Wang,Guoxiang Wang,Li Cui,Dazhi Wang,Shiping Gao,Suhua Liu,Sa Liu,Hongfeng Xu
Bimetallic metal-organic framework (MOF) has attracted great interest as an electrode for supercapacitors . Most metal sources are limited to valences of + 2 and + 3. We select metal sources of Co (II) and Mo (VI) and demonstrated a crystalline bimetallic MOF precursor prepared by using a facile chemical synthesis. The one-step solvothermal strategy is assisted by thioacetamide (TAA) for the self-assembly Co-Mo-S nanosheet arrays (Co-Mo-S NSAs). TAA-induced etching is essential to regulate the assembly of amorphous structures. Otherwise, only a single-structure crystalline Co-Mo-S could be obtained. The Co-Mo-S NSAs show a large specific capacitance of 1805.28 F g −1 at a current density of 0.5 A g −1 . A Co-Mo-S NSAs//AC battery−supercapacitor hybrid (BSH) make with activated carbon as the negative electrode and Co-Mo-S NSAs as the positive electrode. At a current density of 0.5 A g −1 , the BSH shows a high energy density of 169.73 Wh kg −1 and a power density of 371.44 W kg −1 . After 50,000 cycles, the capacitance retention rate is as high as 94.44%, showing good reversibility and cycle life. This work provides an effective strategy for manufacturing bimetallic MOF-based metal sulfide heterostructure electrode materials for practical energy storage and conversion .
研究领域:
材料科学
·
能量存储与转换
·
电化学
·
纳米材料
·
超级电容器
✓ 已验证
DOI
高影响因子
Carbon Energy
·
2025
·Vol. 7
·期 5
·e70001
·
IF 24.2
Qianfeng Wu,Chuanhao Li,Shuo Chen,Zhenghua Su,Muhammad Abbas,Chao Chen,Qianqian Lin,Jingting Luo,Liming Ding,Guangxing Liang
Visible and near-infrared photodetectors are widely used in intelligent driving, health monitoring, and other fields. However, the application of photodetectors in the near-infrared region is significantly impacted by high dark current, which can greatly reduce their performance and sensitivity, thereby limiting their effectiveness in certain applications. In this work, the introduction of a C 60 back interface layer successfully mitigated back interface reactions to decrease the thickness of the Mo(S,Se) 2 layer, tailoring the back-contact barrier and preventing reverse charge injection, resulting in a kesterite photodetector with an ultralow dark current density of 5.2 × 10 −9 mA/cm 2 and ultra-weak-light detection at levels as low as 25 pW/cm 2 . Besides, under a self-powered operation, it demonstrates outstanding performance, achieving a peak responsivity of 0.68 A/W, a wide response range spanning from 300 to 1600 nm, and an impressive detectivity of 5.27 × 10 14 Jones. In addition, it offers exceptionally rapid response times, with rise and decay times of 70 and 650 ns, respectively. This research offers important insights for developing high-performance self-powered near-infrared photodetectors that have high responsivity, rapid response times, and ultralow dark current.
研究领域:
光电子学
·
光探测器
·
材料科学
·
半导体器件
·
可再生能源
✓ 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）