JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Shengzu Xiao,Zhengyao Sun,Zehao Zhang,Pin Ma,Haibo Li
The application of Mo 2 CT x MXene as an anode for lithium-ion batteries (LIBs) is severely limited by the little electrochemical active sites and large diffusion energy barrier of lithium ions. Creating heterostructures between MXene and high-performance secondary materials with unique structure and tunable electron arrangement is an effective strategy. Herein, the heterostructure of P-doped MoO 2 and Mo 2 CT x (Mo 2 CT x /MoO 2 -P) with built-in-electric field and rich oxygen vacancies is constructed to co-regulate the electrochemical performance of battery. This design enables the material with high electronic density of states, improved ability of lithium adsorption and diffusion as well as strong structural stability. As a result, the as-prepared Mo 2 CT x /MoO 2 -P anode delivers excellent rate performance (301.3 mAh g −1 at 5 A g −1 ) and long cycle stability (1062.13 mAh g −1 at 1350 cycles at 2 A g −1 and 345.5 mAh g −1 at 4500 cycles at 5 A g −1 ), which are superior to that of previously reported Mo 2 CT x -based anode materials. Moreover, the Mo 2 CT x /MoO 2 -P||LiCoO 2 full cell offers 341.4 mAh g −1 after 200 cycles at 1 A g −1 , confirming the practicality of Mo 2 CT x /MoO 2 -P.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Ying Tang,Dongsheng Xie,Xiaomin Guo,Lining Fang,Hui Zeng,Zebao Rui
Plasmonic photochemical N 2 fixation has received widespread attention owing to the attractive plasmonic enhancement effects in improving solar-to-NH 3 conversion efficiency. However, the weak N 2 adsorption affinity in metallic plasmonic photocatalysts and insurmountable interfacial barriers in metal–semiconductor plasmonic photocatalysts lead to rapid charge carrier recombination instead of participating in N 2 -to-NH 3 conversion. Herein, a photothermal catalyst Fe-dispersed MoO 3− x /MXene with synergistic plasmon resonance hybridization structure is fabricated for photothermal N 2 fixation. The hybrid plasmon resonance effects derived from MXene and MoO 3− x induce a strong optical response across the ultraviolet–visible-near-infrared range and generation of energetic charge carriers, and the induced photothermal effect further accelerates electron extraction, transport, and surface reaction kinetics. Moreover, the abundant oxygen vacancies and Fe sites can intensify the N 2 adsorption and donate the energetic electrons into the anti-bonding system for the stimulative N H coupling process. A high NH 3 formation rate of 87.1 μmol g −1 h −1 is achieved under solar-level illumination.
研究领域:
材料科学
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化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Laxian Yu,Jihua Zhao,Simon Tricard,Qiangming Wang,Jian Fang
A low cost, sensitive and efficient ascorbic acid (AA) sensor was developed using a molybdenum oxide (MoO x ) and Prussian Blue (PB) nanocomposite , anchored on a graphite felt (GF) substrate (MoO x @PB/GF). MoO 2 nanorods , which were fabricated by annealing of Mo-precursor, play a key role in promoting the synthesis of PB from Fe 3+ and [Fe(CN) 6 ] 3- . The as-prepared electrode was characterized by scanning electronmicroscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and electrochemical methods. The modified electrode exhibited outstanding performances for the electrocatalytic oxidation of AA, with a sensitivity as high as 0.37 A/M, a good linear response in a concentration range from 0.0125 μM to 293 μM, an ultra-low detection limit of 0.0119 μM (S/N = 3), as well as a notable reproducibility and an excellent selectivity. Finally, the composite electrode gave satisfactory results for practical sample analyses, e.g. standard AA added in drinking water .
研究领域:
生物传感
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2018
·Vol. 410
·期 18
·4519-4526
·
IF 3.307
Du Jiayan,Zhao Mengxin,Huang Wei,Deng Yuequan,He Yi
We report a molybdenum oxide (MoO 3 ) nanomaterial-based three-input logic gate that uses Sn 2+ , NO 2 − , and H + ions as inputs. Under acidic conditions, Sn 2+ is able to reduce MoO 3 nanosheets, generating oxygen-vacancy-rich MoO 3− x nanomaterials along with strong localized surface plasmon resonance (LSPR) and an intense blue solution as the output signal. When NO 2 − is introduced, the redox reaction between the MoO 3 nanosheets and Sn 2+ is strongly inhibited because the NO 2 − consumes both H + and Sn 2+ . The three-input logic gate was employed for the visual colorimetric detection of Sn 2+ and NO 2 − under different input states. The colorimetric assay’s limit of detection for Sn 2+ and the lowest concentration of NO 2 − detectable by the assay were found to be 27.5 nM and 0.1 μM, respectively. The assay permits the visual detection of Sn 2+ and NO 2 − down to concentrations as low as 2 μM and 25 μM, respectively. The applicability of the logic-gate-based colorimetric assay was demonstrated by using it to detect Sn 2+ and NO 2 − in several water sources.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
·
2014
·
IF 3.679
Yuming Cui,Na Liu,Yifen Xia,Jiangang Lv,Sujuan Zheng,Nianhua Xue,Luming Peng,Xuefeng Guo,Weiping Ding
1-Butene, abundant but inexpensive in industry, can be used to produce more valuable propene and ethene through the well-known metathesis reaction. In terms of catalyst system of molybdena, controlling the interaction between the molybdena and the support is quite crucial. A special support, i.e., well-shaped one-dimensional γ-Al 2 O 3 with uniform diameters of ∼10 nm and lengths of ∼100 nm, has been synthesized via oleylamine-assisted hydrothermal method. The molybdenum oxides are well controlled in sizes of moderate aggregation suitable for 1-butene metathesis with a fairly high rate of propene production (38.9 × 10 −9 mol m −2 s −1 , 30 mol% yield in a single pass) under mild conditions. The status of MoO x species in the catalyst has been investigated by solid state 29 Si MAS NMR, Raman, UV–vis, H 2 -TPR and NH 3 -TPD techniques. The catalyst, highly stable after twelve times of regeneration, is important for practical utilization for the metathesis reactions.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Wei Lv,Xiaohong Hu,Yuting Zhu,Ying Xu,Shijun Liu,Peili Chen,Chenguang Wang,Longlong Ma
Herein, the catalysts of ruthenium and molybdenum oxide nanoparticles supported on activated carbon (AC) were synthesized by precursor stepwise impregnation and employed for the hydrodeoxygenation (HDO) of lignin oil. The XRD, TEM, XPS and NH 3 -TPD-MS result of RuMoO x /AC catalysts confirm that the method of loading molybdenum precursor before ruthenium precursor is advantageous for the MoO x and Ru nanoparticles high dispersion and the reduction of MoO x species enhance the amount of acidity of catalyst. Meanwhile, the reduction temperature of RuMoO x /AC-1-T catalysts could effectively regulate the MoO x species that determine the activity and product distribution of HDO. The conversion of aromatic monomers/dimers were up to 96% with high selectivity of hydrocarbon over RuMoO x /AC-1-350 catalyst at 160 °C and 30 bar H 2 . Which is attributed to the MoO 3 and Ru species possess the excellent activity of benzene ring deep hydrogenation, ether bond breaking and acid dehydration. The RuMoO x /AC-1-350 catalyst effectively converted lignin oil (from the depolymerization of cornstalk hydrolysis residue) into hydrocarbons (56.9 wt%) and cyclohexanol/ethers (18.7 wt%) under 280 °C and 3 bar H 2 . The durability of the RuMoO x /AC-1-350 catalyst for HDO of lignin oil was also investigated and showed that the RuMoO x /AC-1-350 catalyst had good stability, regenerability and repeatability.
研究领域:
催化化学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Peng Zhou,Ziting Li,Yuxin Zhao,Bingxin Zhao,Wenyue Jiang,Xiaoshuang Chen,Jinping Wang,Rui Yang,Chunling Zuo
Electrocatalytic water splitting produces green and pollution-free hydrogen as a clean energy carrier, which can effectively alleviate energy crisis. In this paper, bimetallic and selenium doped cobalt molybdate (Se-CoMoO 4 ) nanosheets with rough surface are resoundingly prepared. The multihole Se-CoMoO 4 nanosheets display ultrathin and rectangular architecture with the dimensions of ∼ 3.5 μm and 700 nm for length and width, respectively. The Se-CoMoO 4 electrocatalyst shows remarkable water electrolysis activity and stability. The overpotentials of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are 270 and 63.3 mV at 10 mA cm −2 , along with low Tafel slopes of 51.6 and 62.0 mV dec -1 . Furthermore, the Se-CoMoO 4 couple electrolyzer merely requires a cell voltage of 1.48 V to achieve 10 mA cm −2 current density and presents no apparent attenuation for 30 h. This investigation declares that the hybridization of transition bimetallic oxide with nonmetallic adulteration can afford a tactic for the preparation of bifunctional non-precious metal-based electrocatalysts.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Yuxi Ren,Hang Xiao,Ben Chong,Mengyang Xia,Song Kou,Aofei Xu,Jia Li,Jiantao Liu,Honghui Ou,Zhiwei Ren,Guidong Yang
Molybdenum oxide (MoO 3 ) is a promising catalyst for electrocatalytic nitrogen reduction (eNRR). However, Mo sites with saturated coordination are not favorable to stable N 2 adsorption. Herein, we employed sodium ions as electron donors to interact with the interlayer atoms of MoO 3 , causing localized lattice stress on it and weakening the M-O bond, thus inducing the Mo 5+ active sites (Na x MoO 3 ). The N 2 temperature-programmed desorption (N 2 -TPD) result of the as-prepared Na x MoO 3 exhibits that introducing Mo 5+ could significantly improve the N 2 adsorption on the catalyst’s surface. The optimized Na x MoO 3 has an NH 3 yield of 41.3 μg h −1 mg −1 at ambient temperature and an FE of 21.4 %, which is in the relatively advanced position in the contemporaneous studies. Both experiments and density-functional theory (DFT) calculation demonstrated that the Mo 5+ sites can effectively reduce the d-orbital energy level of Mo, which significantly enhances the interaction with N 2 .
研究领域:
材料科学
·
电催化
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xinyu Wang,Xu Yu,Pinyi He,Guohui Yang,Fu Qin,Yongkang Yao,Jianliang Bai,Guojun Yuan,Lili Ren
Anion exchange membrane water electrolyzer (AEMWE) represents a promising sustainable method for large-scale industrial-grade hydrogen manufacturing. However, the sluggish kinetics of the bifunctional oxygen/hydrogen evolution reaction (OER/HER) electrocatalysts makes it imperative to develop high-performance anode and cathode materials. Herein, P-doped β-phase NiMoO4 (p-β-NiMoO4) nanorods were first constructed as the cathode material for HER, and then α-phase NiMoO4 (p-β-NiMoO4-A) derived by an electrochemical phase transformation mechanism was further applied for OER. A series of characterizations supported that applying sufficient anode potential to β-NiMoO4 can drive the phase transformation from beta to alpha. Compared with the directly prepared counterpart, this dynamic phase transformation results in the catalyst tuning the atomic configuration environment, modifying the electronic state, and optimizing the *OH adsorption ability. Consequently, the assembled two-electrode electrolytic cell system contributes remarkable overall water/seawater splitting capacity and outstanding long-term durability even under industrial-grade operating conditions. The AEMWE device with an ultralow cell voltage of 2.15 V at 2.0 A·cm–2 current density confirms the applicability of anode and cathode electrocatalysts. This study could provide a promising path to realize the efficient phase transition of nickel–molybdenum-based materials for industrial clean energy conversion.
研究领域:
材料科学
·
能源化学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yanhui Song,Wenbo Sha,Meixiu Song,Peizhi Liu,Jiakang Tian,Hong Wei,Xiaodong Hao,Bingshe Xu,Junjie Guo,Jianguo Liang
Defect-rich metal-based nanomeshes have been regarded as potential effective catalysts for electrocatalytic water splitting, in which nanopores are beneficial to increase active sites and enhance the mass transfer. However, facile synthesis of metal-based nanomeshes still remains a great challenge. Herein, we report the cost-efficient ultrathin nickel molybdenum nanomeshes (NiMoO 4 ) for overall water splitting. The NiMoO 4 possesses outstanding oxygen evolution reaction property (239 mV@10 mA cm −2 ), together with an exceptional cycling stability. Notably, phosphorus (P)-doping endows the NiMoO 4 nanomeshes a superior hydrogen evolution reaction property (144 mV@−10 mA cm −2 ). We also prepare a double electrode system with NiMoO 4 and P-doped NiMoO 4 , and evaluate the performance of overall water splitting (1.68 V @10 mA cm −2 ). The key point of the processing route developed here is the synergistic effect between defect engineering and element doping, which provide a guiding insight for the development of novel catalysts for their practical applications.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 21
·7447
·
IF 4.927
Tian Chang,Di Qu,Bao Li,Lixin Wu
Vanadomolybdates (VMos), comprised of Mo and V in high valences with O bridges, are one of the most important types of polyoxometalates (POMs), which have high activity due to their strong capabilities of gaining/losing electrons. Compared with other POMs, the preparation of VMos is difficult due to their relatively low structural stability, especially those with unclassical architectures. To overcome this shortcoming, in this study, triol ligands were applied to synthesize VMos through a beaker reaction in the presence of V2O5, Na2MoO4, and organic species in the aqueous solution. The single-crystal X-ray diffraction results indicate that two VMo clusters, Na4{V5Mo2O19[CH3C(CH2O)3]}∙13H2O and Na4{V5Mo2O19[CH3CH2C(CH2O)3]}∙13H2O, with a similar architecture, were synthesized, which were both stabilized by triol ligand and {MoO6} polyhedron. Both clusters are composed of five V ions and one Mo ion in a classical Lindqvist arrangement with an additional Mo ion, showing an unprecedented hepta-nuclear VMo structure. The counter Na+cations assemble into one-dimensional channels, which facilitates the transport of protons and was further confirmed by proton conductivity experiments. The present results provide a new strategy to prepare and stabilize VMos, which is applicable for developing other compounds, especially those with untraditional architectures.Keywords:polyoxometalate;vanadomolybdate;triol ligand;covalent modification
研究领域:
无机化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Xiao Cui,Xinli Chen,Wenjie Zhang,Xiaoqing Yan,Ming Wang,Jiancong Lian,Zhuan Zheng,Hong Deng
Metal oxides with hierachical three-dimensional (3D) superstructure , which integrate large surface area with high electrical conductivity , have been regarded as desirable and ideal electrode materials for supercapacitors . In this work, 3D hierarchical CoMoO 4 @C@MnO 2 core-shell nanorod arrays (NRAs) on nickel foam were fabricated by a facile and stepwise hydrothermal approach. The morphologies of CoMoO 4 and CoMoO 4 @C@MnO 2 were explicitly investigated. The CoMoO4@C@MnO2 based electrodes exhibited excellent capacitive performances. In comparison to the specific capacitance of CoMoO 4 (1080 F g −1 at a current density of 3 A g −1 and 82% retained capacitance over 5000 cycles) The CoMoO 4 @C@MnO 2 based electrodes showed improved performance, delivering specific capacitance up to 1824 F g −1 at 3 A g −1 and 86% retained capacitance over 5000 cycles. The results establish that the binder-free CoMoO 4 @C@MnO 2 is a promising candidate for high performance electrochemical supercapacitors.
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）