APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Hongliang Fu,Wenyao Xue,Shaocong Zhan,Jing Zhao,Yue Lian,Zhifeng Wang,Yongfeng Hu,Huaihao Zhang
Metal active sites are anchored via the coordination effects between V/Co and terephthalic acid. • Co-doping constructs highly active Co-O-V catalytic sites, enhancing reaction activity. • PTA-derived oxygen-containing carbon layer mitigates metal site dissolution, improving stability. Developing highly active and stable catalysts for alkaline electrolytic water oxidation remains a challenge. Here, we prepared highly active, stable and conductive scale like microsheet Co-V 2 O 5 @C through Co-doping and coordination effect between terephthalic acid (PTA) and metal (V/Co). Specifically, Co-doping into V 2 O 5 lattice constructs highly active V-O-Co sites, thus reducing the adsorption energy of oxygen-containing intermediates. Meanwhile, the scale like microsheet Co-V 2 O 5 @C expose abundant active sites, enhancing oxygen evolution efficiency. The coordination effect between PTA and V/Co enables the in-situ formation of carbon layer on V 2 O 5 surface after carbonization, which effectively alleviates the dissolution of active sites and enhances stability. For conductive design, the Co introduction into V 2 O 5 can promote intrinsic conductivity. Moreover, under high-temperature carbonization, PTA evolves into oxygen-containing carbon layer, which boosts Co-V 2 O 5 @C overall conductivity and reaction kinetics. Based on above advantages, Co-V 2 O 5 @C displays good electrochemical performance in oxygen evolution reaction (OER) (low overpotential: 290 mV@10 mA cm −2 ; long stability: 50 h; small charge transfer resistance: 11.7 Ω). Download: Download high-res image (226KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Xiangsen Xu,Fengye Lyu,Jiahao Chen,Yiqing Zeng,Zhaoxiang Zhong,Feng Zhang,Weihong Xing
In this work, TiO 2 nanocones grown on SiC membrane was used as the support of V 2 O 5 -WO 3 species to prepare V 2 O 5 -WO 3 /TiO 2 @SiC (VWTi(C-X)@SiC) catalytic membrane for dust filtration and NH 3 -SCR denitration. On account of the large specific surface area, abundant surface acid sites and prominent redox property, the optimized VWTi(C-550)@SiC catalytic membrane shows >90% NO removal efficiency at the temperature of 280–360 °C, which are much higher than VWTi(P-550)/SiC catalytic membrane (TiO 2 nanoparticles prepared by traditional vacuum coating titanium sol method was used as the support of V 2 O 5 -WO 3 species, NO conversion <80% at whole tested temperature). Additionally, VWTi(C-550)@SiC displays superior stability during the SO 2 + H 2 O resistance and 300 h long-term test at 300 °C, and exhibits an excellent dust filtration performance (2.5 μm SiO 2 particles interception rate exceeded 99.99%) under all test conditions. More importantly, the structure of nanocones decrease the influence of tensile stresses due to the different thermal expansion coefficients of TiO 2 and SiC membranes, which significantly suppress the fall of VWTi catalyst layer from the surface of SiC during pulse-jet cleaning. Among above results, it can be concluded that the optimized VWTi(C-550)@SiC catalytic membrane shows a prosperous application prospect for the simultaneously dust filtration and NH 3 -SCR denitration of medium–high temperature flue gas .
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ANALYTICA CHIMICA ACTA
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2023
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IF 6.2
Qi Wang,Yongli Ding,Randy A. Dahlgren,Yue Sun,Jingjing Gu,Yuhao Li,Tingting Liu,Xuedong Wang
Total antioxidant capacity (TAC) can be evaluated by detecting the content of antioxidants , such as ascorbic acid , based on the enzyme-mimetic activity of nanomaterials . Herein, we fabricated a 3D-V 2 O 5 /NC nanocomposite using a self-templating strategy, which achieved ultrafine particles (∼2.5 nm), a porous carbon layer, large specific surface area (152.4 m 2 /g), N-doping and heterogeneous structure. The strong catalytic activity of 3D-V 2 O 5 /NC resulted from the integrated effect between the ultrafine structure of V 2 O 5 nanoparticles and the 3D porous nitrogen-doped carbon framework, effectively increasing the number of active sites. This nanozyme presented a higher catalytic activity than its components or precursors in the nanocomposite (e.g., VN/NC, NC, V 2 O 5 , and VO 2 /g-C 3 N 4 ). ROS scavenging experiments confirmed that the dual enzyme-like activity of 3D-V 2 O 5 /NC (catalase-like and oxidase-like) resulted from their co-participation of ‧O 2 − , h + and ‧OH, among which ‧O 2 − played a crucial role in the catalytic color reaction. By virtue of the 3D-V 2 O 5 /NC nanoenzyme activity and TMB as a chromogenic substrate, the mixed system of 3D-V 2 O 5 /NC + TMB + H 2 O 2 provided a low detection limit (0.03 μM) and suitable recovery (93.0–109.5%) for AA. Additionally, a smartphone-based colorimetric application was developed employing "Thing Identify" software to evaluate TAC in beverages. The colorimetric sensor and smartphone-detection platform provide a better or comparable analytical performance for TAC assessment in comparison to commercial ABTS test kits. The newly developed smartphone-based colorimetric platform presents several prominent advantageous, such as low cost, simple/rapid operation, and feasibility for outdoor use.
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 10
·5479-5487
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IF 14.511
Dong Chen,Haoliang Chen,Cheng-Feng Du,Lin Liu,Hongbo Geng,Hong Yu,Xianhong Rui
Although hydrated vanadate compounds have received extensive attention in aqueous batteries due to their high specific capacity, they are still impeded by the poor cycling resulting from host structure degradation and metal dendrite formation. Herein, we prepare multi-ion co-pre-intercalated hydrated vanadate microflowers (MxVO) with a robust crystal structure from vanadium slag waste, presenting highly reversible and ultrafast Zn2+ storage. Furthermore, using diethyl ether as the electrolyte additive, the cycling durability of zinc metal can be improved and the cells can work well at −20 °C. Impressively, the MxVO cathode realizes an unparalleled rate capability (203 mA h g−1 at 100 A g−1) and excellent cycling stability (317 mA h g−1 after 4000 cycles at 20 A g−1). Even when tested at −20 °C, it demonstrates a satisfactory zinc storage capability (e.g., the coin-type cell shows a discharge capacity of 120 mA h g−1 at 50 A g−1, and the pouch cell delivers ∼200 mA h g−1 at 1 A g−1). Hence, this work has exploited a new and efficient avenue for the exploration and utilization of solid waste toward high-performance aqueous batteries and other electrochemical applications.
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JOURNAL OF POWER SOURCES
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2022
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IF 9.794
Nuo Xu,Chenyi Yan,Wei He,Lin Xu,Zhouheng Jiang,Anyu Zheng,Huayu Wu,Ming Chen,Guowang Diao
As a new generation of electrode material , flexible electrode material can effectively broaden the application area and scope of energy storage devices. In this paper, a new vanadium pentoxide carbon fiber cloth (V 2 O 5 -CFC) is successful synthesized by means of electrospinning and high-temperature calcination. As a cathode material for aqueous zinc-ion batteries, V 2 O 5 -CFC possesses significantly increased specific capacity (132 mA h g −1 at 1 A g −1 ) and good cycling ability (154 mA h g −1 at 0.5 A g −1 after 1000 cycles). The volume effect in the charge/discharge process can be alleviated by using a composite fiber structure to avoid agglomeration of V 2 O 5 nanosheets . Most important, V 2 O 5 -CFC displays the flexible property and demonstrates its potential applications as a high-energy density and flexible energy storage device with good reversibility . Therefore, the design and synthesis strategy of flexible nanofibers film is prospective for applications in next-generation flexible aqueous zinc-ion batteries.
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SOLID STATE SCIENCES
·
2021
·
IF 3.059
Cong Huang,Jun Wang,Mengjun Li,Xiaofang Lei,Qiang Wu
The construction of Z-scheme systems is a valid strategy to effectively enhance photocatalytic property in the field of photocatalysis . In the present work, a novel Z-scheme V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst was prepared via a simple one-pot solvothermal method for the first time. The phase structure, morphology and optical property of the as-prepared V 2 O 5 /NH 2 -MIL-101(Fe) composite were carried out by a series of characterizations. The photocatalytic property of V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst was investigated by photodegrading tetracycline (TC) under ultraviolet–visible light irradiation. The systematic studies indicate that the obtained V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst possesses superior photocatalytic performance toward TC removal. Furthermore, a Z-scheme photocatalytic degradation mechanism for TC over V 2 O 5 /NH 2 -MIL-101(Fe) composites was proposed. The results show that Z-scheme V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst has potential application in the treatment of TC wastewater. This research will broaden the studies of NH 2 -MIL-101(Fe)-based Z-scheme photocatalysts.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Minhua Su,Shuwen Wang,Jiaqi Pan,Miaoling Chen,Congjie Shen,Yanrong Lai,Jiaxue Zhao,Jingran Yang,Diyun Chen,Ying Zhou
The extraction of uranium (U) from wastewater is of vital importance for ensuring the sustainable and safe development of nuclear energy, as it addresses both environmental protection and resource recycling. Vanadium (V) and its compounds are extensively employed in iron and steel manufacturing, and their utility in pollutant remediation further promotes the circular use of V-bearing materials. However, studies on utilizing inexpensive and readily available vanadium oxides (e.g., V 2 O 5 ) for the treatment of highly acidic uranium-containing wastewater remain scarce. This study investigated the effectiveness of V 2 O 5 in removing U(VI) and immobilizing it into crystalline uranyl vanadates, providing the first confirmation of the feasibility of using V 2 O 5 for uranium elimination and capture. The results indicate that V 2 O 5 exhibits excellent extraction capacity and selectivity for uranyl ions in contaminated solutions, achieving a U(VI) extraction rate exceeding 97% even under highly acidic conditions ( e.g. , pH = 2.0). Adsorption equilibrium was attained within 250 min, and kinetic studies combined with model fitting indicated that the process was governed by both intra-particle diffusion and chemical adsorption mechanisms. It was discovered that the captured U(VI) was ultimately incorporated into a stable crystalline phase, identified as uvanite (U 2 V 6 O 21 ·15H 2 O), through a coprecipitation pathway, revealing a novel crystallization mechanism. The overall immobilization process was attributed to the synergistic effects of chemical adsorption and coprecipitation. These findings support the development of vanadium oxide-based technologies for U(VI) purification and recovery from complex wastewater.
研究领域:
环境科学
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核化学
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废物管理
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材料科学
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污染修复
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Yaofeng Shi,Fengqin Tang,Lulu Liang,Jikui Zhu,Jianhui Jiang,Fuxi Bao,Chunhui Shi,Feng Yu,Libing Hu
Developing heterojunction electrocatalysts with built-in electric field (BIEF) as bifunctional electrocatalysts for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) to achieve clean hydrogen production and urea-containing wastewater degradation remains a significant challenge. Herein, we have ingeniously coated V 2 O 5 on the surface of MnFe Prussian blue analogue (MnFePBA) nanospheres forming a heterojunction (V 2 O 5 /MnFePBA) via a simple hydrothermal method, and meanwhile BIEF formed within a heterojunction, which was characterized by series of characterizations. Benefiting from the BIEF influence, the V 2 O 5 /MnFePBA electrocatalyst required merely 260 mV of overpotential to realized a high current density (100 mA cm −2 ) in an electrolyte of 1.0 M KOH. What's more important, at the same high current density, V 2 O 5 /MnFePBA also delivered a potential of 1.36 V vs. RHE in a mixed electrolyte composed by 1.0 M KOH and 0.5 M urea. DFT calculations further demonstrated that BIEF could effectively adjust the electronic structure, induce the movement of the d-band center, and optimize intermediate adsorption, thereby decreasing the energy barrier favorable for the rate-determining step, which could accelerated the OER/UOR kinetics rates, thus V 2 O 5 /MnFePBA as a bifunctional electrocatalyst realized an efficient catalysis for OER and UOR. This work offers a promising approach to construct heterojunction with BIEF for enhancing both OER and UOR performance to produce green hydrogen and address urea-containing wastewater.
研究领域:
材料科学
·
电化学
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Tian Zhou,Zhangnan Xu,Mingyu Zhou,Zexin Zhou,Nianben Zheng,Zhiqiang Sun
Flow electrolysis is regarded as the most promising approach for producing high-quality and pure vanadium electrolytes. However, it faces challenges due to sluggish electrode reaction kinetics, resulting in high energy consumption and relatively low preparation efficiency. To address this issue, we propose a rapid electrode modification method that combines low-pressure plasma treatment with KMnO 4 etching. The catalyst MnO 2 , formed on carbon fiber, effectively enhances the electrode's electrocatalytic performance. The findings from the electrochemical analysis demonstrate that the modified electrode displays markedly enhanced electrocatalytic activity for the redox reaction of V 4+ /V 3+ . Flow electrolysis tests reveal that the electrolysis system with the modified electrode consumes 35.78 % less energy than the original graphite felt at a high current density of 300 mA/cm 2 , ten times higher than previously reported. Notably, the efficiency of the electrolyte prepared using the modified electrode in vanadium redox flow batteries (VRFB) achieves 98.13 % (coulombic efficiency), 86.88 % (volumetric efficiency), and 85.26 % (energy efficiency) at 100 mA/cm 2 , comparable to the electrolyte produced with the original electrode. This demonstrates the viability of employing the proposed graphite felt to efficiently fabricate V 3.5+ electrolytes with low energy consumption at high current densities.
研究领域:
电化学
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储能技术
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材料科学
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化学工程
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表面改性
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氧化还原液流电池
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xianhong Zheng,Jinhao Tang,Binbin Ding,Xinghua Hong,Qiaole Hu,Zhi Liu,Lihua Zou,Xiaoshuang Zhou,Peng Wang,Changlong Li,Wenqi Nie
Aqueous zinc-ion batteries (ZIBs) have emerged as a promising alternative to traditional lithium-ion batteries due to their high safety, environmental friendliness , and cost-effectiveness, as well as their high theoretical capacity. However, developing freestanding cathodes with excellent electrochemical performance , including high specific capacity and energy density , still faces significant challenges. Herein, we present a freestanding, flexible, and interfused V 2 O 5 nanowire/reduced graphene oxide (rGO) composite fiber nonwoven fabric for the cathode of aqueous ZIBs via a novel wet-spinning and wet-fusing assembly strategy. The resulting V 2 O 5 nanowire/rGO composite fiber nonwoven fabric can be directly utilized as the cathode for aqueous ZIBs, demonstrating outstanding electrochemical performance, including high specific capacity (402.5 mAh g −1 at 0.1 A g −1 ), energy density (286.3 Wh kg −1 at 71.4 W kg −1 ), excellent rate capability, and long cycling life (4000 cycles). This study provides new insights into the development of high-performance flexible freestanding electrode materials for ZIBs
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Xiangrui Bu,Kunfeng Ding,Qiang Wu,Yubin Yuan,Weihua Liu,Chuanyu Han,Xiaoli Wang,Xin Li
As an n-type metal oxide semiconductor (MOS), vanadium pentoxide (V 2 O 5 ) has shown great potential in gas sensing, especially for the detection of NO 2 . Herein, a highly sensitive NO 2 sensor based on 3D porous V 2 O 5 microrods (MRs) derived from metal organic frameworks (MOFs) was reported. The porous structure of vanadium-based MOF-derivatives (MIL-47) was tuned by the control of annealing temperature (300 °C–600 °C) in the pyrolysis process . The gas sensors with the MOF-derivatives are exposed to NO 2 at 150 ℃ for gas sensing tests. The sensor with MOF-derivatives annealed at 500 °C (MIL-47–500) showed the highest response (527 %) to 50 ppm NO 2 . It also showed excellent selectivity, low limit of detection, and good repeatability. The NO 2 -sensing behaviors of the MIL-47–500 sensor under ultraviolet (UV) illumination have also been investigated. Under UV illumination, the response of the MIL-47–500 sensor increased to 706 %. At 75 °C, the response of the MIL-47–500 sensor toward 50 ppm NO 2 was significantly improved from 57 % to 538 % under UV illumination. The response/recovery times were reduced from 102 s/300–48 s/178 s. The excellent performance was attributed to the unique porous structure of MIL-47–500 and the UV light excited charge carriers.
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Journal of the Taiwan Institute of Chemical Engineers
·
2022
·
IF 5.477
Kaiwen Ni,Yuewang Peng,Geyu Dai,Huawang Zhao,Zhiwei Huang,Xiaomin Wu,Guohua Jing,Wei Feng,Ye Yuan
Background Ammonia bisulfate (ABS) deposition on the active sites of the catalyst surface is the main reason for SO 2 poisoning in low-temperature NH3-selective catalytic reduction (SCR). Accelerated ABS decomposition efficiently enhances the SO 2 resistance. Methods In this work, ceria was specifically chosen to decorate V 2 O 5 -WO 3 /TiO 2 catalyst (Ce-VW/Ti) to activate ABS decomposition in low-temperature NH 3 -SCR. Significant findings The optimal 7Ce-VW/Ti catalyst accelerated the decomposition of ABS and had superior SO 2 tolerance at 250°C. The additive CeO 2 improved the specific surface area and surface acidity, favoring the NH 3 -SCR catalytic activity. ABS was preferentially deposited on the additive CeO 2 on the surface of the 7Ce-VW/Ti catalyst and generated cerium sulfate, eventually protecting the active V 2 O 5 sites and TiO 2 support. Moreover, high quantity of V 5+ and charge transfer between active species V 2 O 5 and support TiO 2 could be maintained due to CeO 2 protection, subsequently maintaining the high NH 3 -SCR performance and enhancing the SO 2 tolerance.
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