JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Jing Lin,Zhanyi Cao,Lianshan Sun,Fei Liang,Limin Wang
Ti 1.4 V 0.6 Ni + x LiAlH 4 ( x = 0.5, 1, 1.5, 2, 2.5, wt.%) composites were prepared by ball-milling, and the effects of LiAlH 4 content on structure and electrochemical properties of the composites were investigated systematically. The addition of LiAlH 4 to the Ti 1.4 V 0.6 Ni alloy significantly affected the morphology and size of the composite particles . The electrochemical cycling stability and rate dischargeability of the composite electrodes benefitted from adding some LiAlH 4 ( x = 1), which however deteriorated when the LiAlH 4 content increased further. The positive effect of LiAlH 4 on the electrochemical performance of the studied alloy was caused by suppression of the dissolution of active components of the Ti 1.4 V 0.6 Ni hydrogen storage alloy.
研究领域:
材料科学
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金属功能材料
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能源存储
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电化学
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氢能技术
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高影响因子
WASTE MANAGEMENT
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2024
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IF 7.1
Jing Gao,Wenchao Lu,Yujiang Li,Tao Wu
This article employs six organic acids to selectively dissolve Mo, Ni and V from spent catalysts, and the most effective acid is identified. Then, the effects of key leaching parameters, including acid concentration, temperature, and S/L ratio, on metal leaching are systematically explored to determine the leaching mechanism. The results demonstrate that the leaching ability of organic acids followed the order: oxalic acid > citric acid > tartaric acid > malonic acid > acetic acid > formic acid. The leaching process of metals was jointly influenced by acidolysis and complexolysis. Among them, more than 93.07 % of Mo, 86.64 % of V, and 74.21 % of Ni were selectively leached with oxalic acid at the optimum condition: S/l: 1/20, oxalic acid: 1.0 mol/L, temp: 60 °C. From the correlation coefficients, the resulting activation energies, and n values, it was demonstrated that Mo and V followed the Avrami dissolution reaction model, V leaching was controlled by the diffusion mode, and Mo leaching was controlled by a mixed mode of chemical reaction and diffusion. The dissolution behavior of both metals consistently adhered to the linear trend of the Avrami kinetic model under varying S/L ratios and oxalic acid concentrations.
研究领域:
化学工程
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环境科学
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材料科学
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PubMed
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
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2025
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IF 3.1
Zhang Ningyu,Zhang Yang,Xiang Junyi,Xue Yuxiao,Yu Wenhao,Lv Xuewei
The conventional vanadium extraction and dephosphorization processes in the converter are carried out separately, which results in high energy consumption and operational complexity. Calcium ferrates possess the dual function of oxidizing agents and alkaline sources, which provides a novel approach for integrating vanadium extraction and dephosphorization processes. Accordingly, the simultaneous extraction of vanadium and dephosphorization from V-bearing hot metal by the addition of calcium ferrates was proposed in this study for the first time. The experiments were conducted in a low-frequency induction furnace at 1523 K to 1673 K in an inert atmosphere. Thermodynamic calculations and experimental studies demonstrate the potential of calcium ferrates to facilitate vanadium extraction and dephosphorization simultaneously. Especially CaFe 4 O 7 and CaFe 2 O 4 , due to their low melting point and high Oxidizing ability, can reduce the vanadium and phosphorus contents in hot metal to below 0.024 and 0.010 wt pct at 1623 K for 6 minutes of reaction. Correspondingly, the lg L V are 2.42 and 2.37, whereas the lg L P are 2.13 and 2.14, respectively. In the slag, vanadium is oxidized from V 3+ to V 5+ by Fe 2 O 3 with the CaO content increases. A shift from spinel to calcium vanadium silicate is observed. Phosphorus is always present in calcium silicate. The simultaneous vanadium extraction and dephosphorization are achieved only by adding calcium ferrate, effectively recovering vanadium resources and improving semi-steel purity.
研究领域:
冶金学
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材料科学
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化学工程
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提取冶金
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高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Zhenzhen Jin,Xiangjing Cao,Qinglong Guo,Cong Zhang,Qingrong Li,Wenqi Wang,Yong Lv,Yan Ma,Xianwen Wang
As one of the most common inflammatory bowel diseases (IBDs), ulcerative colitis (UC) has become a rising global health issue that affects people’s quality of life. Conventional therapeutic drugs have low bioavailability and may cause serious side effects due to their lack of acidic resistance and lesion-targeting capabilities. The development of novel nanomedicines to overcome these problems is urgently needed. Nanozymes have attracted attention because of their excellent catalytic efficiency in various harsh environments. In this study, tannic acid-vanadium (TA-V) nanozymes with multienzymatic and excellent antioxidant abilities, which exhibit acidic resistance and a negative surface charge, were successfully developed. All these characteristics make it possible that these nanozymes are not easily decomposed by gastric acid and can effectively accumulate in colitis lesions with a positive charge through oral delivery. In vitro and in vivo experiments further demonstrated the excellent prophylactic and therapeutic value of these compounds in the treatment of UC by scavenging reactive oxygen/nitrogen species (ROS/RNS) and mitigating the oxidative stress environment, thus downregulating the levels of the proinflammatory cytokines IL-1β, IL-6, and TNF-α. Furthermore, TA-V also showed excellent biosafety and biocompatibility without causing obvious damage to the main organs. This work provides novel preventative and therapeutic TA-V nanozymes that might have potential clinical applications in UC treatment.
研究领域:
医学
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生物化学
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纳米医学
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PubMed
高影响因子
ENVIRONMENTAL POLLUTION
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2025
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IF 7.3
Wei Zhang,Jianwei Li,Ruihua Huang,Xueqi Zhang,Yuting Wang,Dongmei Zhou,Qiming Xian
An in-depth understanding of the sorption behaviors of per- and polyfluoroalkyl substances (PFASs) in soil is essential to assess their environmental risks accurately. Due to chemical industry production and waste treatment, co-contamination soil of heavy metals (HMs)-PFASs has become a public concern worldwide. This study investigated soil sorption behaviors of PFASs including perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), and perfluorohexanesulfonic acid (PFHxS). A multiple linear regression (MLR) model was developed to predict the sorption of PFOS in soil. Validation results demonstrated that this model could effectively predict the distribution coefficients ( K d ) of PFOS based on soil organic carbon (OC), silt, clay, and free Fe/Al-oxide contents, exhibiting a strong predictive ability ( r 2 = 0.942, p < 0.001). In six soils, HMs (Cd 2+ and As 5+ ) influence three anionic PFASs sorption primarily by altering the electrostatic and hydrophobic interactions between soil components and PFASs. The K d values of PFOS tend to rise with increasing Cd 2+ concentration but decline with increasing As 5+ concentration. In contrast, HMs have a relatively minor influence on the sorption of PFOA and PFHxS. Moreover, a nonlinear model was constructed for the first time to quantify the impact of HMs on PFASs sorption. The model achieves exceptional prediction accuracy when applied to both experimental data from this study and literature data. A comprehensive understanding of PFASs sorption behavior in soil under conditions of coexisting HMs is of great significance for formulating targeted degradation and mitigation strategies for co-contaminated sites.
研究领域:
环境科学
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土壤学
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PubMed
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2024
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IF 2.6
Ren Jing,Tang Jing,Zhao Mei,Chen Zilin,Wang Fang
Uracil (U) in DNA plays an important role in numerous biological processes. It can be introduced through two primary mechanisms, cytosine deamidation and misincorporation of dUMP during DNA replication. The misincorporation of U in DNA is associated with various diseases, especially cancer. Here, we developed an electrochemical method utilizing a modified electrode with self-assembled gold nanoparticles on covalent organic frameworks (COF-V-AuNPs) for the direct detection of U. The COF-V-AuNP composite offers numerous advantages, such as exceptional stability, abundant π-functional sites, excellent conductivity, a high specific surface area, a porous structure, and a strong non-covalent affinity, all of which facilitate sensitive detection of U. This electrochemical method achieves a detection limit of 1.92 μM for U. Furthermore, the method was successfully applied to the detection of U using human serum samples as matrices, indicating its potential for clinical applications.
研究领域:
生物化学
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医学诊断
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材料科学
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DOI
高影响因子
ENERGY & FUELS
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2024
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IF 5.2
Yuying Feng,Wene Du,Jiahui Jiang,Ting Zhao,Guancheng Xu,Li Zhang
Hydrogen production by electrolytic water is a green technology, which is conducive to alleviating the current severe energy and environmental crisis. However, it is affected by the high oxygen evolution reaction (OER) potential and has high energy consumption. Replacing the OER with the urea oxidation reaction (UOR) can reduce energy consumption. Herein, V-doped bimetallic selenides with an ultrathin nanosheet structure catalyst (V–NiSe2/Ni3Se4/CuSe/NF) are prepared via hydrothermal and low-temperature selenization. The catalyst has excellent UOR activity with a low potential of 1.33 V at 100 mA cm–2 and remarkable stability (120 h at 10 mA cm–2). Electrochemical measurements and characterization indicate that the abundant interface formed by NiSe2/Ni3Se4 and CuSe can induce charge transfer, thereby improving the catalytic activity and stability of the electrode material. V doping promotes the formation of ultrathin nanosheets with folds, which favors expanding the catalyst’s active site and the contact region between the catalyst and the electrolyte, thus improving the catalytic activity. In situ Raman measurement further proves that V doping is beneficial to the surface reconstruction of the catalyst and accelerates the reaction kinetics of UOR. This work offers a new idea for the preparation of highly active UOR electrodes.
研究领域:
材料科学
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电化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yu Peng,Jiawei Chen,Gaopan Liu,Yue Yin,Xiaoli Fang,Yonggang Wang,Xiaoli Dong,Yongyao Xia
Lithium metal batteries (LMBs) with Li metal anodes and high-voltage LiCoO 2 (LCO) cathodes offer high energy density but face challenges such as Li dendrite growth and LCO structure degradation, which primarily arises from the electrolyte's inability to form a stable interphase. Herein, a dual-additive optimized carbonate-based electrolyte is developed, incorporating tetraethylammonium nitrate (TEANO 3 ) and lithium difluorobis(oxalato) phosphate (LiDFBOP) as regulators. LiDFBOP enhances interfacial stability and compactness, while TEANO 3 facilitates Li + transport and suppresses excessive decomposition of LiDFBOP. The synergistic effect of TEANO 3 and LiDFBOP establishes robust, high ion-conductive solid electrolyte interphase (SEI) and cathode–electrolyte interphase (CEI) enriched with P- and N-containing inorganic compounds (including LiN x O y and P-O/P-F species), enabling dense Li deposition and stable cycling of LCO under a high cut-off voltage of 4.5 V. The optimized electrolyte enables Li||LCO full cells with a high capacity retention of 84% even with high-mass-loading LCO cathode (3.5 mAh cm −2 ) and limited Li (N/P = 2). This work demonstrates a straightforward electrolyte design strategy for optimizing SEI and CEI, advancing the practical deployment of LMBs.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Nanoscale
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2021
·Vol. 13
·期 16
·7822-7830
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IF 7.79
Yuwan Dong,Panzhe Su,Guanjie He,Huiling Zhao,Ying Bai
With high theoretical capacity and tap density, LiCoO2 (LCO) cathode has been extensively utilized in lithium-ion batteries (LIBs) for energy storage devices. However, the bottleneck of structural and interfacial instabilities upon cycling severely restricts its practical application at high cut-off voltage. From another perspective, the compatibility between the electrode and electrolyte is highly valued in the development of all-solid-state batteries. Herein, we construct a compatible interface between Li7La3Zr2O12 (LLZO) and LCO through a facile surface modification strategy, which significantly improves the cycling stability of LCO at a high cut-off voltage of 4.5 V. Characterization results demonstrate that the LCO@1.0 LLZO sample delivers a desirable capacity retention of 76.8% even after 1000 cycles at 3.0–4.5 V with the current density of 1 C (1 C = 274 mA g−1). Further investigation indicates that the LLZO modification layer could protect the LCO electrode through effectively alleviating the side reactions, which not only facilitates the Li+ transportation at the interface but also mitigates the bulk structure degradation. Moreover, it is also established that a small amount of La and Zr ions could gradiently migrate into the surface lattice of LCO to generate a thin layer of the surface solid solution Li–Co–La–Zr–O. Thus formed pinning region between surface modified LLZO and LCO cathode could contribute both to their mechanical compatibility and Li+ kinetics behavior upon repeated cycling. This work not only provides a strategy in broadening the operation potential and extracting higher capacity of LCO but also sheds light on constructing compatible interfaces in LIBs, especially for all-solid-state energy storage and conversion devices.
研究领域:
材料科学
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能源存储与转换
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PubMed
高影响因子
Journal of Water Process Engineering
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2026
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IF 6.6
Xinran Li,Long Chen,Hongguang Dai,Xiaotao Zhang,Chaoqun Zhang,Ximing Wang
A structure oriented biomass MOF design strategy is developed. • Two composites enable fast kinetics and high capacity adsorption. • Distinct mass transfer behaviors are governed by pore architecture. • A new paradigm for scenario-specific adsorbent design is proposed. Arsenate contamination in aquatic environments poses a serious threat to ecosystem safety and human health. Developing sustainable biomass-derived adsorbents with targeted adsorption performance for different water treatment scenarios remains challenging. Herein, two biomass–metal–organic framework (MOF) composites were constructed by matching biomass-derived pore architectures with MOF active-site chemistry for As(V) removal. Wood–MOF was fabricated by in situ growth of NH₂-MIL-88(Fe) within the hierarchical channels of delignified wood, while BC–MOF was obtained by integrating UiO-66(Zr)–MIL-88(Fe) dual-metal centers into the mesoporous framework of straw-derived biochar. The two composites exhibited high experimental As(V) adsorption capacities of 350.16 and 364.81 mg/g, respectively, with adsorption dominated by monolayer chemical interactions at accessible active sites. Fixed-bed experiments revealed distinct continuous-flow behaviors: Wood–MOF enabled rapid mass transfer under high-flow conditions due to its interconnected wood-derived channels, whereas BC–MOF exhibited more stable breakthrough behavior and stronger phosphate resistance owing to its mesoporous framework and Fe/Zr dual-metal active sites. The different dynamic adsorption behaviors highlight the importance of coordinating biomass-derived transport architectures with MOF-based adsorption chemistry for continuous-flow arsenic removal. Real water adsorption experiments, regeneration tests, metal leaching analysis, and spectroscopic characterization further demonstrated the practical applicability and structural stability of both composites. Spectroscopic analyses indicated that As(V) immobilization involved oxygen-containing groups, ligand exchange, and coordination interactions with Fe/Zr active centers. This study provides a biomass–MOF design strategy by coupling biomass-derived architectures with MOF chemistry, offering a promising approach for developing scenario-oriented adsorbents for efficient arsenic remediation. Download: Download high-res image (201KB) Download: Download full-size image
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高影响因子
TALANTA
·
2026
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IF 6.7
Du Yuan,Linhua Jiang,Yong Liu,Hongfei Liu,Xiangmin Huang,Zongqing He,Haodian Peng,Shaoshuai Sheng,Song Ma,Ning Duan
Effective arsenic pollution control necessitates real-time arsenic compositional monitoring, a demand that conventional analytical techniques struggle to meet due to limitations in timeliness and economy. Herein, an innovative deep ultraviolet (DUV) spectroscopy method is proposed, enabling the direct speciation and quantification of high concentration arsenic in copper smelting wastewater. High fidelity DUV spectra were acquired via a specialized measurement system that eliminated oxygen and stray light interferences, wherein the specific arsenic-related features revealed the capability for inorganic As(III)/As(V) quantification. TD-DFT simulations elucidated the differentiated spectral signatures of As species via distinct electronic transition mechanisms. In addition, matrix interference mechanisms on arsenic quantification were studied, with sulfuric acid modulating arsenic protonation states, and Fe(III) alongside Cu(II) inducing linear DUV spectral superposition. Incorporating these mechanistic insights, an optimized partial least squares (PLS) model was developed for the proposed analytical method, ensuring effective quantitative analysis of the arsenic species. Compared with conventional analytical techniques, the developed method achieved competitive accuracy across simulated and authentic wastewater samples with arsenic concentrations exceeding 0.1 M, while demonstrating significantly better green analytical chemistry scores. This approach realizes direct arsenic speciation and quantification without complex pretreatments, providing a rapid, economical, and sustainable analytical tool for arsenic pollution control. Furthermore, it offers a novel DUV analytical paradigm for monitoring highly concentrated and complex aqueous solutions across a broad range of process industries.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
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IF 4.7
Yuan Chen,Yelin Li,Wanjun Tang,Tingcheng Li,Qingliang You,Guangyong Xie
In the field of heterogeneous catalysis, it still remains a challenge in controlled preparation of micro-nanostructured composite oxide catalysts. In this regard, a series of urchin-like V–Ti–O micro-nanostructures with varying Ti/V molar ratios are successfully synthesized by the reaction between tetrabutyl titanate (TBOT) and vanadyl oxalate via a facile one-step solvothermal process and subsequent calcination. The influences of reaction conditions, such as the ratio of reactant, the acidity of reaction system, and the use of glycol on the morphologies and oxidation state of vanadium are investigated. The results show that urchin-like hierarchical micro-nanostructures are formed, on which a large number of one-dimensional nanobelts radially grow from the center. Vanadium oxide species are highly dispersed on the external surface of the anatase TiO 2 structure. The obtained V–Ti–O catalysts are tested for the ammoxidation of mono- and dichlorotoluenes in gas-phase with molecular oxygen and exhibit high catalytic activity in converting chlorotoluenes to corresponding nitriles.
研究领域:
材料科学
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催化化学
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高影响因子
危险品化学品经营许可证（带存储）