ChemCatChem
·
2025
·
IF 3.9
Juan Meng,Shuhao Chen,Yihui Li,Minnan Liu,Yue Zhou,Long Cheng,Hengfei Qin
This study presents the synthesis of a V 2 O 5 -NiO nanosheets composite catalyst via a straightforward hydrothermal method, aiming to explore the relationship between its microstructural features and its performance in the 5-hydroxymethylfurfural oxidation reaction (HMFOR). The analysis revealed a notable increase in the concentration of oxygen vacancies in the V 2 O 5 -NiO composite compared to pure V 2 O 5 , indicating an enhanced catalytic capacity. The V 2 O 5 -NiO electrocatalyst achieved an impressive 2,5-Furandicarboxylic acid (FDCA) conversion rate of 96.7%, demonstrating excellent electrochemical activity. Moreover, the catalyst exhibited remarkable stability, maintaining high conversion efficiencies for both 5-Hydroxymethylfurfural (HMF) to FDCA over multiple cycles. These results emphasize the critical role of oxygen vacancies and the synergistic interaction between V 2 O 5 and NiO in optimizing catalyst performance. This work provides important insights into the design of robust, efficient electrocatalysts, advancing the sustainable production of FDCA from HMF. Graphical A V 2 O 5 -NiO nanosheet electrocatalyst, synthesized through a hydrothermal process, demonstrates a remarkable 96.7% yield of FDCA in the electrocatalytic oxidation of HMF. This result underscores the significance of oxygen vacancies and the synergistic interaction between V 2 O 5 and NiO in improving the catalyst's performance, making it a promising candidate for sustainable biomass conversion.
研究领域:
电催化
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材料科学
·
可持续化学
·
能量转换
·
纳米材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wenyao Xue,Hongliang Fu,Guanjie Xue,Jing Zhao,Yue Lian,Zhifeng Wang,Yongfeng Hu,Huaihao Zhang
The oxygen evolution reaction (OER), a half-process of water electrolysis, involves four electron transfer processes with a high energy barrier, leading to slow reaction kinetics. Developing stable and high-efficiency OER electrocatalysts remains a major challenge in field of water electrolysis. Here, a novel Ni-doping V 2 O 5 @NC nanoflower-like catalyst is synthesized for OER reaction. Specifically, Ni-V 2 O 5 @NC is obtained by incorporating Ni into V 2 O 5 through a simply hydrothermal- carbonization process, using NH 4 VO 3 , Ni(NO 3 ) 2 ·6 H 2 O and H 2 C 2 O 4 · 2 H 2 O as raw materials. This approach can improve the OER activity and stability of V 2 O 5 . Ni-V 2 O 5 @NC presents the following advantages. Firstly, Ni-doping combined with nanoflower structure improves the reaction activity. Ni-doping generates more electrochemical active sites, facilitating the adsorption/desorption process of reaction intermediates and electron transfer, thereby enhancing catalytic activity. Besides, the nanoflower-like structure provides a relatively high specific surface area and more active sites to participate in the reaction, thus boosting the catalytic reactivity. Secondly, Ni with high conductivity and its doping into V 2 O 5 causes structural and performance changes of material, reducing the charge transfer resistance and optimizing the conductive property. Meanwhile, the inherent N and C from hydrothermal reaction also increase material conductivity. Also, Ni doping inhibits the stacking of V 2 O 5 lamellar structure while maintaining the catalyst’s activity, structural integrity and the improved stability. The electrochemical analysis results show Ni-V 2 O 5 @NC good electrochemical performance. Ni-60-V 2 O 5 @NC features a low overpotential (300 mV@10 mA cm −2 ) and a small Tafel slope (74.2 mV dec −1 ) in OER. Additionally, the overpotential of Ni-60-V 2 O 5 @NC only increases by 3 mV after 1000 cycles stability tests.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 45
·24644-24650
·
IF 11.9
Dongrun Xu,Weiye Qu,Junhong Liu,Junxiao Chen,Xue Fang,Liwei Chen,Zhen Ma,Xi Liu,Xingfu Tang,Yaxin Chen
Selective catalytic reduction (SCR) is the most effective technology to control NO emission using commercial V2O5–WO3/TiO2 catalysts, but the nature of active catalytic sites remains under debate. Here we provide evidence demonstrating that dinuclear vanadium–tungsten sites are the most active catalytic sites of conventional V2O5–WO3/TiO2 catalysts, inconsistent with a prevailing view that dimeric vanadium sites are the active sites. The dinuclear vanadium–tungsten sites have inherently stronger acidity than the dimeric vanadium sites, favoring NH3 adsorption. Meanwhile, the vanadium 3d electrons of the dinuclear vanadium–tungsten sites are richer than those of the dimeric vanadium sites, facilitating O2 activation in SCR. Hence, the dinuclear vanadium–tungsten sites have higher SCR activity than the dimeric vanadium sites under identical reaction conditions. This work settles a long dispute on the identification of active sites of conventional V2O5–WO3/TiO2 SCR catalysts, thus having implications for a unified explanation of disparate SCR reaction mechanisms and rational design of improved SCR catalysts.
研究领域:
催化化学
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环境化学
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材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Lihua Wang,Yongli Wang,Xiaoliang Zhu,Yongjie Zhao
For the sake of seeking appropriate electrodes for Lithium ion battery which can be further extended for mass production. In this research, ball milling procedure has been utilized to synthesize V 2 O 5 /graphite electrode. The ratio of each phase in the composite can be easily manipulated. Meanwhile, SEM images demonstrated that homogeneous microstructure has been achieved with these different compositions. Specifically speaking, an optimal performance utilized as cathode material for lithium ion battery had been realized with 7.5V 2 O 5 /graphite, which maintains a specific capacity of 136 mAh g −1 after 150 cycles under the current density of 50 mAh g −1 . Moreover, a relative high specific capacity of 113.3 mAh g −1 (at the current density of 1A g −1 ) can be retained after 300 cycles. In addition to enhanced cycling stability, the improved rate capability had also been achieved in this composition. Further investigation of CV results revealed that a capacitive behavior contributed by the introduction of graphite was responsible for this enhancement. Here designated composite exhibits great potential in electrochemical field.
研究领域:
材料科学
·
电化学
·
储能技术
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纳米材料
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电池技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Kun Zhang,Na Li,Xiaoxuan Ma,Yi Wang,Jiupeng Zhao,Liangsheng Qiang,Xingang Li,Yao Li
A novel V 2 O 5 @PANI composite nanowires were prepared by simply stirring in sodium nitrate solution and in-situ chemical oxidation polymerization methods. The V 2 O 5 @PANI composite nanowires display excellent optical and electrochemical properties, such as multicolor ranging from black, pale yellow, light yellow to dark green, outstanding cycling stability for 1000 cycles and fast switching time of bleaching and coloration (1.5 and 2.3 s, respectively). These outstanding performances are attributed to the synergistic effect between PANI encapsulated and original V 2 O 5 nanobelts . The study offer a new synthesis strategy for fabricating inorganic-organic composite materials in optical and electrochemical fields. The morphology and structure of the composite were characterized by scanning electron microscopy, high-resolution transmission electron microscopy and X-Ray photoelectron spectroscopy.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2022
·
IF 4.494
Shuokun Sun,Shichuang Cui,Fei Wang,Mingrui Gao,Wei Wei,Jinxiu Dong,Xiaoyan Xia,Quanyao Zhu,Jinyong Zhang
Electrochromic devices show great potential for color switchability and ease of manipulation for reflection tuning. However, the devices’ color fit and cycle stability make it difficult to meet the requirements of functional reflective product applications. Herein, a vanadium pentoxide (V2O5)–cellulose composite electrochromic film with remarkable cycling stability and a wide range of color options is presented. Flexible reflective electrochromic devices realizing free switching between yellow and blue were successfully assembled by the prepared composite films; in the test, the device possesses a low drive voltage (±1 V) and a rapid switching response time (≤5.6 s) and excellent working status after 1000 cycles. Besides, the assembled devices demonstrated an exceptional range of optical reflection modulation upon excitation. This study presents a direction for the selection of suitable devices in the field of flexible functional materials and broadens the scope of electrochromic applications.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 8
·e202200075
·
IF 9.14
Jun Zheng,Chenyang Zhan,Kai Zhang,Wenwu Fu,Qiaojun Nie,Ming Zhang,Zhongrong Shen
Graphical Cellmates : A zinc-ion battery cell is constructed with V 2 O 3 @C as the cathode and a “water-in-salt” electrolyte. Electrochemically induced oxidation of V 2 O 3 @C into amorphous V 2 O 5 with in situ Zn 2+ and H 2 O co-insertion leads to excellent cycling and rate performances. Systematic improvement of this architecture indicates significant promise for practical application. Aqueous Zn-ion batteries (ZIBs), with the advantages of low cost, high safety, and high capacity, have great potential for application in grid energy storage and wearable flexible devices. However, their commercial application is still restricted by their inferior long-term cycling stability, Zn dendrite formation, and the decomposition of aqueous electrolyte. In this study, a Zn|Zn(CF 3 SO 3 ) 2 +LiTFSI|V 2 O 3 @C cell is constructed to address the above issues. The V 2 O 3 @C electrode can be fully oxidized into amorphous V 2 O 5 @C simultaneously with Zn 2+ and H 2 O co-insertion. The cell delivers a high specific capacity of more than 240 mAh g −1 at 3 A g −1 , with extraordinary coulombic efficiency and capacity retention. The excellent electrochemical performances are attributed to synergistic effects between the V 2 O 3 @C electrode and the water-in-salt electrolyte with enhanced stability and improved interface reaction kinetics. Systematic improvements of this architecture indicate much promise for application.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Kun Wang,Jixu Yang,Xiaoyan Yang,Qingfu Guo,Guangming Nie
Copper, an essential element to play significant roles in human health, can bind β -amyloid peptide (A β ) to form Cu 2+ -A β complexes and spontaneously generate harmful reduced oxygen species leading to oxidative stress in the brain. Herein, we present a simple, novel off–on photoelectrochemical (PEC) sensor for dual detection of Cu 2+ and A β based on V 2 O 5 nanofibers (NFs)/CdS nanoparticles (NPs) as the photoactive material. Specially, V 2 O 5 NFs were prepared by the recrystallization method and then modified onto indium tin oxide (ITO) electrode. CdS NPs were subsequently deposited onto the surface of V 2 O 5 NFs by electrochemical deposition method. The well-matched energy level between V 2 O 5 NFs and CdS NPs effectively suppresses the recombination of photogenerated electron and hole (e - /h + ) pairs, leading to the admirable photocurrent response. Cu 2+ specifically coordinated with CdS to produce a CuxS adduct, which quenched the PEC intensity due to the recombination of excited electrons and holes. Interestingly, the constructed PEC sensing platform also exhibited a sensitive response to A β based on the high affinity of Cu 2+ for A β . In the presence of A β , its recognition with Cu 2+ led to the generation of Cu 2+ -A β complexes onto the V 2 O 5 /CdS surface, resulting in the recovery of PEC response. Under optimal conditions, the proposed PEC sensor possessed the detection limits toward Cu 2+ and A β as low as 0.15 nM and 8.0 fM, respectively. The “off–on” PEC probe was successfully applied to the detection of Cu 2+ and A β in the practical samples. The simple and sensitive PEC probe of V 2 O 5 NFs/CdS NPs shows great potential applications in biological analysis and early disease diagnosis.
研究领域:
生物分析
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疾病诊断
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材料科学
·
神经科学
✓ 已验证
DOI
高影响因子
TALANTA
·
2010
·
IF 3.29
Huili Zhang,Lichun Zhang,Jing Hu,Pingyang Cai,Yi Lv
This work proposed a gas sensor for the determination of tert-butyl mercaptan, one of the highly toxic volatile sulfur compounds , which was based on cataluminescence emission during its catalytic oxidation on the surface of nanosized V 2 O 5 . The cataluminescence characteristics and the optimum conditions, including the morphology of sensing material, the wavelength of cataluminescence emission, the oxygen flow rate and working temperature were investigated in detail. Under the optimized conditions, the calibration curve of the relative cataluminescence intensity versus the concentration of tert-butyl mercaptan vapor was made, with the linear range of 5.6–196 μg mL −1 and the detection limit of 0.5 μg mL −1 ( S / N = 3). The relative standard deviation (R.S.D.) ( n = 5) of relative cataluminescence intensity for 84 μg mL −1 tert-butyl mercaptan was 3.6%. There is no or weak response to some common substances, such as formic acid , alcohol (methanol, ethanol, propanol, isopropanol, n -butanol, isoamyl alcohol), o -dichlorobenzene, acetonitrile , ethyl acetate , aldehyde (formaldehyde, acetaldehyde and propanal), 1,2-dichloroethane and ammonia. Furthermore, the proposed sensor was successfully used for determining tert-butyl mercaptan in four artificial samples, with a good recovery. The results demonstrated that the proposed gas sensor had a promising capability for the tert-butyl mercaptan in routine monitoring.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhuoyang Li,Yang Zhang,Guishang Pei,Mengjiao Jiao,Xuewei Lv
MnV 2 O 6 and Mn 2 V 2 O 7 are essential compounds in the manganese salt roasting process for extracting vanadium and serve as excellent battery materials. Determining their thermodynamic properties is of significant theoretical and practical importance. In this study, MnV 2 O 6 and Mn 2 V 2 O 7 were synthesized through solid-state synthesis under a nitrogen atmosphere, and their crystal structures were analyzed using X-ray powder diffraction. The heat capacity of MnV 2 O 6 and Mn 2 V 2 O 7 were measured using relaxation calorimetry over the temperature range of 2–300 K. The entropy at 298.15 K, including magnetic contributions, was calculated as 178.99 ± 5.35 J K -1 ·mol -1 for MnV 2 O 6 and Mn 2 V 2 O 7 for 258.93 ± 6.47 J K -1 ·mol -1 . The standard molar enthalpies of formation were determined using high-temperature solution calorimetry in a molten lead borate solvent, yielding -1997.09 ± 23.97 for MnV 2 O 6 and -2427.71 ± 29.12 kJ mol -1 for Mn 2 V 2 O 7 from their element references. Based on these reliable experimental data, other thermodynamic properties, including enthalpy changes, entropy, and Gibbs free energy, were calculated. Finally, thermodynamic simulations were conducted to analyze phase evolution during the manganese salt roasting process and to evaluate the water solubility of MnV 2 O 6 and Mn 2 V 2 O 7 .
研究领域:
材料科学
·
热力学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 7
·1660
·
IF 3.1
Xianghui Jia,Kaixi Yan,Yanzhi Sun,Yongmei Chen,Yang Tang,Junqing Pan,Pingyu Wan
Rechargeable aqueous zinc-ion batteries have attracted a lot of attention owing to their cost effectiveness and plentiful resources, but less research has been conducted on the aspect of high volumetric energy density, which is crucial to the space available for the batteries in practical applications. In this work, highly crystalline V2O5microspheres were self-assembled from one-dimensional V2O5nanorod structures by a template-free solvothermal method, which were used as cathode materials for zinc-ion batteries with high performance, enabling fast ion transport, outstanding cycle stability and excellent rate capability, as well as a significant increase in tap density. Specifically, the V2O5microspheres achieve a reversible specific capacity of 414.7 mAh g−1at 0.1 A g−1, and show a long-term cycling stability retaining 76.5% after 3000 cycles at 2 A g−1. This work provides an efficient route for the synthesis of three-dimensional materials with stable structures, excellent electrochemical performance and high tap density.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Manyi Zheng,Xiyu Qiu,Maoye Yu,Jianzhong Guo,Weiwei Huan,Mingdeng Wei,Lin Chen
Developing high-performance cathode materials is essential for advancing aqueous Zn-ion batteries (AZIBs). As a typical cathode material, V 2 O 5 faces limitations in further development due to its low intrinsic conductivity and structural instability. Herein, cerium-doped V 2 O 5 nanobelts (Ce-V 2 O 5 ) were rationally constructed from V-MOF microflower precursors through a combined hydrothermal conversion, Ce-ion doping, and calcination strategy. Compared with pristine V 2 O 5 microspheres, the Ce-V 2 O 5 architecture exhibits enlarged interlayer spacing, a higher specific surface area, more accessible electrochemically active sites, and improve charge-transport properties. As a result, the Ce-V 2 O 5 cathode delivered a high capacity of 487.3 mA h g −1 at 0.1 A g −1 and still retains 212.6 mA h g −1 at 20 A g −1 . It also maintains 212.8 mA h g −1 after 1200 cycles at 10 A g −1 , demonstrating strong rate capability and long-term cycling durability. Kinetic analysis based on CV, EIS, and GITT measurements revealed that Ce incorporation effectively lowers the charge-transfer resistance and accelerates Zn 2+ diffusion. The ex-situ XRD characterization further confirmed the high reversibility of the Ce-V 2 O 5 electrode during repeated Zn 2+ insertion/extraction. This work provides an effective route for regulating MOF-derived vanadium oxides through ion incorporation and offers useful guidance for designing high-performance cathodes for AZIBs.
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产品关联
DOI
高影响因子
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