JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Li Chen,Hui Zhou,Zhi Chen,Zhaohui Wu,Yabing Chen,Haijun Zeng,Juntong Huang,Huiyong Yang,Di Guo
Rechargeable aqueous zinc-ion batteries (AZIBs) are attractive due to their superior safety, rich zinc resources, and cost-efficient. Vanadium-based oxides , as popular cathode materials , are inevitably subject to dissolution in aqueous solutions, and inherent low electrical conductivity and sluggish reaction kinetics, significantly impeding the performances in Zn 2+ storage. In this study, V 2 O 5 /V 6 O 13 composites are successfully prepared by a novel three-roll milling technique combined with high-temperature treatment to improve these shortcomings. The results demonstrate that the V 2 O 5 /V 6 O 13 electrode sustains excellent cycling (316.0 mAh g −1 at 5 A g −1 after 4000 cycles) and superior rate performance (186.69 mAh g −1 at 20 A g −1 ). Ex-situ characterization reveals that the mechanism involves the co-intercalation of H 2 O with Zn 2+ . It is found by testing in different electrolytes that V 2 O 5 is gradually amorphous in aqueous electrolyte during cycling, which greatly improves the structural stability and enhances the ability for capturing Zn 2+ . Moreover, it is demonstrated by calculations that a higher degree of amorphization promotes the adsorption of Zn 2+ . The present work provides a new idea for the development and mechanism explanation of high-performance AZIB materials.
研究领域:
材料科学
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电化学
·
储能
·
电池技术
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产品关联
DOI
PubMed
高影响因子
POLYHEDRON
·
2026
·
IF 2.8
Nan Ma,Lihui Xu,Liming Wang,Qianqian Zhu,Hao Dou
V 2 O 5 -based composites V 2 O 5 /g-C 3 N 4 and V 2 O 5 /WO 3 were successfully prepared using ultrasonic calcination and hydrothermal methods respectively. Their crystal structures, morphologies, and chemical states were systematically marked by utilizing SEM, XRD, and XPS. Both composites developed stable heterojunction structures, which boosted their photocatalytic performance. The heterojunction of V 2 O 5 /g-C 3 N 4 broadened the range of visible light response and enhanced the spatial separation of photogenerated electron-hole pairs by energy level matching. In contrast, the V 2 O 5 /WO 3 heterojunction effectively inhibited rapid carrier recombination for high-energy ultraviolet (UV) excitation through a Type-II band alignment, which overcomes a limitation that is commonly observed in pure V 2 O 5 because of its narrow bandgap. Photocatalytic tests showed good photocatalytic activity with V 2 O 5 /g-C 3 N 4 of MB's 99% degradation under visible light and V 2 O 5 /WO 3 attained 98% degradation of MB under UV light. This work overcomes the limitations of pure V 2 O 5 , such as a narrow light-response range and a higher carrier recombination rate and shows that the combination of ultrasonic calcination and hydrothermal synthesis allows for the controllable construction of heterojunction structures, which is a reliable strategy for the design of advanced photocatalytic materials.
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DOI
高影响因子
Catalysts
·
2020
·Vol. 10
·期 2
·207
·
IF 3.52
Hua Nie,Wei Li,Qirong Wu,Vladislav Rac,Vesna Rakić,Xuesen Du
Poisoning effects by alkali metal chlorides is one of the major reasons for the deactivation of SCR catalyst in biomass-fired plants. In this study, the influence of KCl on two vanadium-based catalysts with different promoters, V2O5-WO3/TiO2and V2O5-Ce(SO4)2/TiO2, was investigated. The catalytic activity of the fresh V2O5-WO3/TiO2was higher than that of V2O5-Ce(SO4)2/TiO2at low temperatures. V2O5-Ce(SO4)2/TiO2performed better than V2O5-WO3/TiO2when KCl was deposited on the catalyst surface. Both poisoned catalysts were efficiently regenerated by SO2treatment. The characterization results show that the reducibility and acidity of the catalysts were weakened by KCl deposition but regenerated by SO2.
研究领域:
环境催化
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大气污染控制
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材料化学
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工业催化
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能源工程
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DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 3
·1615-1625
·
IF 2.4
Dong Jinxiu,Cui Shichuang,Wang Fei,Wei Wei,Yin Ziluo,Zhang Yuqing,Zhu Quanyao
Electrochromism (EC) is a color control technique for providing visual information, in which vanadium pentoxide (V 2 O 5 ) is a promising material for electrochromic applications due to its excellent ionic intercalation/deintercalation properties and cathodic/anodic color-changing properties. However, its poor cycling stability and color change response rate limit its practical application. Metal–organic frameworks (MOFs) combine the rigidity and flexibility of inorganic–organic materials and can meet the requirements of EC materials such as cycle stability, electrical conductivity, and stress-interference resistance. We report here a strategy to modify V 2 O 5 with Cu-MOF. Cu-doped V 2 O 5 and carbon skeleton (Cu 2 V 2 O 7 @C) composites were prepared for electrochromism. In this scheme, Cu doping can facilitate lithium ion migration by broadening and stabilizing the structure of V 2 O 5 , and the distribution of the carbon skeleton can broaden the contact of the active material with the electrolyte and improve the electron conduction. Combining these merits, it exhibits excellent long-term cycle stability (the capacity retention rate reaches 91.78% after 2000 cycles), the light transmission modulation is greatly improved compared with V 2 O 5 (Δ T = 69%, doubled), and the response time is reduced by 30.43%. This study provides a new perspective for improving the light modulation ability and long-term use stability of vanadium oxide EC materials and promotes the development of MOF materials in the field of electrochromism.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2025
·
IF 2.6
Chen Peng,Wang Yan,Cai Wangfeng
In this study, we successfully synthesized a novel flower-like composite V 2 O 5 @CoV-LDH, which was directly anchored onto nickel foam through a two-step hydrothermal method to enhance surface area and stability. The synthesized flower-like composite V 2 O 5 @CoV-LDH features V 2 O 5 as the first layer and CoV-LDH as the second layer, effectively merging the high capacitance and energy density of V 2 O 5 with the large surface area and multivalent states of CoV-LDH. Moreover, this unique bilayer composite structure, directly anchored onto nickel foam, significantly enhances the overall stability of the electrode material. This design demonstrates outstanding performancedue to a strong synergistic effect, which provides the composite with more reactive sites, shorter ion transport pathways, and enhanced cycling stability. The test results show that the V 2 O 5 @CoV-LDH electrode achieves a high specific capacitance of 1822 F g −1 at 1 A g −1 and retains 85.99% of its capacitance after 5000 charge–discharge cycles, demonstrating excellent stability. The asymmetric supercapacitor assembled with the V 2 O 5 @CoV-LDH electrode and activated carbon electrode delivers an energy density of 59.85 Wh kg −1 at a power density of 900 W kg −1 . After 10,000 cycles at 5 A g −1 , the specific capacitance remains at 88%, indicating promising potential for practical applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Rubo Fang,Qianjun Zhang,Chong Yao,Hongjing Wu,Shangkang Xie,Xinhui Zhang,Qingtao Wang,Jinghui Lyu,Feng Feng,Chunshan Lu,Qunfeng Zhang,Xiaonian Li
In the field of catalyst design, machine learning is gaining significant attention, especially in situations where data is limited. Facing this challenge, we have developed a neural network model that enhances predictive accuracy through the careful selection of catalyst descriptors and feature engineering, aiming to predict the conversion rate and selectivity of the acetylene semi-hydrogenation reaction. Our model has identified promising metal oxide catalysts, such as CuO, ZnO, and V 2 O 5 , for the acetylene semi-hydrogenation reaction, and these predictions have been experimentally validated. Among them, CuO achieved an acetylene conversion of 99.6 % and an ethylene selectivity of 90 % at 50–100°C, which is unprecedented at the reaction space velocity we tested. This high activity at relatively low temperatures indicates a more promising industrial application. Looking ahead, machine learning will play a pivotal role in catalyst design, accelerating the discovery and industrial application of new materials.
研究领域:
催化化学
·
材料科学
·
人工智能应用
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2019
·
IF 5.026
Misganaw Alemu Zeleke,Dong-Hau Kuo
The oxy-sulfide based V 2 O 5 @(In,Ga) 2 (O,S) 3 nanocomposite catalyst, at different weight percentages of V 2 O 5 , was successfully synthesized via a simplistic procedural route for the detoxification of hazardous Cr(VI). The two pure catalysts were intimately allied and used for visible light-driven reduction of hazardous Cr(VI). The nanocomposite catalysts were characterized to observe the effects of V 2 O 5 on crystal phase, morphology, light absorption , catalytic activity , and electrical properties. Compared to all, 40% V 2 O 5 loaded nanocomposite catalyst, designated as VOS-2, exhibited the best-reducing capability. It completely reduced toxic Cr(VI) at 2 min under visible light illumination. From the kinetics, it was found that the rate constant of the nanocomposite catalyst was improved by a factor of 3.6 compared to the host nanoflower catalyst. The plausible mechanism of charge transfer process across the interfacial region indicates the diminished recombination probability of photogenerated charge carriers. Therefore, the nanocomposite catalyst is promising for enhanced reduction of Cr(VI) in the Cr-based industrial activities, which is significantly relevant for environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Linghan Xia,Mengchen Wu,Yimeng Li,Hongyan Guo,Yonghong Cheng,Guodong Meng
As one of the most consensus goals around the world, reduction of carbon emissions has attracted huge attention from academic and industry communities for developing renewable energy sources and carbon capture techniques. Nonthermal equilibrium plasma catalysis has been proven to be a very promising way for CO2 conversion into high-value-added products; however, the synergistic catalytic mechanism between the plasma and various catalysts remains a challenge. In this work, we designed a reactor of atmospheric pressure glow discharge (APGD) plasma jet coupled with V2O5/TiO2 nanocomposite catalysts and studied the influence of V2O5 mass fraction, catalyst pretreatment, and reaction plasma parameters on the CO2 dissociation performance. Results showed that the designed reactor could introduce high-density plasma to the downstream area and maintain lower gas temperature, allowing the collaboration between APGD and the V2O5/TiO2 catalyst. The XRD analysis indicated that the solid solution phase TiVO4 could be formed in catalysts by V2O5 doping and reach a maximal content at a mass fraction of 30%, which determined the most excellent redox ability of the catalyst. The pretreatment of the as-prepared catalyst by Ar dielectric barrier discharge (DBD) plasma increased the oxygen vacancy density of the catalyst, thereby raising the conversion rate by 18.43%. Moreover, the transition regime between laminar and turbulent states was found to be the optimal configuration for CO2 dissociation. The reaction pathway was proposed for CO2 dissociation synergistically catalyzed by an APGD plasma jet and V2O5/TiO2. Ultimately, the maximum conversion of 14.88% and energy efficiency of 40.45% were simultaneously achieved, which were superior to the results of most atmospheric pressure plasmas. This work opens an avenue to develop plasma technology for sustainable CO2 utilization.
研究领域:
环境科学
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材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 25
·10626-10636
·
IF 3.5
Lan-xiang Wu,Jia-ke Li,He-dong Jiang,Xin Liu,Ping-chun Guo,Hua Zhu,Yan-xiang Wang
A photorechargeable supercapacitor was constructed using vanadium pentoxide (V2O5), reduced graphene oxide hydrogel (rGH), and zinc trifluoromethanesulfonate (Zn(CF3SO3)2) as the photoanode, cathode, and electrolyte, respectively. The phase composition, microstructure, chemical structure, light absorption, and specific surface area of the synthesized products and the electrochemical performance of the rGH/V2O5 supercapacitor were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, UV-Vis spectroscopy, the Brunauer–Emmett–Teller (BET) method, and an electrochemical workstation, respectively. The results show that the device has a specific capacity of 164 F g−1 at 0.5 A g−1 under illumination with 95 mW cm−2 light intensity, which is 20.5% higher than that under normal electrical charging. The supercapacitor has a 75% capacity retention rate and 100% coulombic efficiency, respectively, after 10 000 testing cycles under photoelectric synergistic charging and discharging. The as-constructed rGH/V2O5 photorechargeable supercapacitor exhibits promising application potential in electric vehicles and wearable electronics.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Feiyu Zhang,Yuan Qu,Xiang Lu,Ziwen Ding,Siqi Li,Wei Ji,Song Liu
Hollow nanoarchitectures-based metal oxide semiconductor (MOS) materials have exhibited signal enhancement in gas sensors. However, the mechanism behind the sensing process and how to further improve the sensing performance is still challenging. In this study, three types of V 2 O 5 nanostructures including single-shelled hollow V 2 O 5 (S-V 2 O 5 ), double-shelled hollow V 2 O 5 (D-V 2 O 5 ), and V 2 O 5 nanosheets (ST-V 2 O 5 ) were fabricated and taken ethanol sensing as an example to study the structure-dependent sensing mechanism systematically. The response of D-V 2 O 5 (80%) to 100 ppm ethanol at 240°C was twice that of S-V 2 O 5 (36%) and ST-V 2 O 5 (34%). This is due to the rich pore structure and enlarged specific surface area of D-V 2 O 5 effectively improving the utilization of active sites and the adsorption-desorption process of target gases on the sensor surface. The present work provides a simple approach to boost the sensitivity of MOS gas sensors and proves the way for the realization of high-performance sensor fabrication.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Zhe-Jian Yi,Xiao-Yue Chen,Jia-Zhen Zhao,Yi-Ming Xie,Ji-Huai Wu,Zhang Lan,Fu-Da Yu,Lan-Fang Que,Hao Luo
Zn||V 2 O 5 full cell exhibit excellent low-temperature performance in Zn(ClO 4 ) 2 based electrolytes due to the strong hydrogen bond breaking effect. However, the crosstalk effect between the V 2 O 5 cathode and Zn anode at room temperature leads to continuous side reactions, highly limiting their practical application. Herein, a water deactivation strategy by introducing methanol additive has been proposed and its effect mechanism on the crosstalk has been explored. It is found that the methanol additive is conducive to build a water-poor solvation structure and reduce the activity of free water, inhibiting the corrosion and improving the cycle stability of Zn anode. In addition, methanol additive triggers the reversible cycling of inert Zn 3 (OH) 2 (V 2 O 7 )(H 2 O) 2 , and suppress its deposition on Zn anode, then breaking the electrochemical crosstalk problem of the Zn||V 2 O 5 system. As expected, the Zn||V 2 O 5 full cell at the designed electrolyte demonstrates superior performance at room and low temperature, delivering a high specific capacity of 300 mAh g −1 at 25 °C, and operating stably for 7500 (>2000 h) cycles without capacity loss at −20 °C, which are superior to most reported works. This work might provide new ideas for addressing electrochemical crosstalk and constructing advanced batteries with superior temperature adaptability.
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
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
·
材料科学
·
可持续化学
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能量转换
·
纳米材料
✓ 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）