SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Fengjing Cao,Fu Jiao,Shixiang Ma,Daming Dong
New strategies for super-sensitive detection of toxic heavy-metal-ion pollutants are urgently needed. Here, we outline a simple and highly sensitive assay for copper(II) ions. The method is based on click chemistry and uses laser-induced breakdown spectroscopy (LIBS) as the readout method. Copper(I) ions formed in situ by the reduction of copper(II) ions in the presence of sodium ascorbate (AA) can catalyze the cycloaddition reaction between an alkyne and an azide (CuAAC). In the presence of copper(II) ions and AA , the AgNPs-BSA-Azide can be clicked with the BSA-Alkyne via a cycloaddition reaction to form a BSA-triazole-BSA-AgNPs sandwich conjugate based on this CuAAC&LIBS system. The intensity of the LIBS signal from the residual AgNPs-BSA-Azide in the supernatant is inversely proportional to the concentration of copper(II) ions. The sensor shows a good detection limit of 0.045 nM and a linear relationship between copper ions concentration and the LIBS signal. This click-based method will broaden the potential applications of LIBS for metal detection in drinking water and environment.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2025
·
IF 3.1
Abulimiti Yasen,Yuxia Zhou,Wenhan Gao,Zhongxin Zhang,Reyihan Tudi,Mei Xiang,Bumaliya Abulimiti
Laser-Induced Breakdown Spectroscopy (LIBS) holds significant value for rapid elemental detection; however, strong spectral interference, matrix effects, and high-dimensional data characteristics pose considerable challenges to accurate quantitative analysis. To enhance the performance of LIBS quantitative analysis, this study proposes a novel machine learning framework that integrates XGBoost and Multilayer Perceptron (MLP), optimized by a Multi-dimensional Adaptive Sparrow Search Algorithm (MA-SSA). The framework employs XGBoost for automated feature selection, eliminating redundant spectral variables while retaining critical information, and utilizes MA-SSA to optimize the hyperparameters of the MLP in regression tasks, significantly improving model stability and prediction accuracy. Experimental results demonstrate that the proposed method achieves 100% accuracy in multi-class classification, outperforming traditional classifiers such as Random Forest, XGBoost, and standalone MLP. In terms of quantitative detection, the MA-SSA-optimized model achieves an RMSE of 4.43 µg/g, surpassing other hybrid optimization models including XGBoost-SSA-MLP (RMSE=4.62 µg/g), XGBoost-PSO-MLP (RMSE=5.225 µg/g), and XGBoost-GA-MLP (RMSE=5.584 µg/g). XGBoost-based feature selection effectively reduces spectral dimensionality while maintaining predictive performance. The proposed MA-SSA algorithm further enhances convergence efficiency and generalization capability. This study provides a robust, efficient, and scalable solution for LIBS analysis, with broad application potential in the field of real-time quantitative detection.
研究领域:
分析化学
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机器学习
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光谱学
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环境监测
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药物分析
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食品安全
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yaxing Han,Ji Chen,Hailian Li,Yuefeng Deng
Effective recycling of valuable metals from the spent lithium-ion batteries (LIBs) is of great importance from the perspective of resource recycling and environmental conservation. In this work, a comprehensive recovery process of impurities removal and valuable metals co-extraction from simulated leaching solution of spent LIBs with CA12-TBP system was investigated. Firstly, more than 99.7% of Al, Fe and Cu were removed by co-extraction with 30 vol% CA12 (25% saponification degree) and 20 vol% TBP after three-stage extraction. The Ni, Co and Mn lost in the organic phase were decreased to 0.18%, 0.09% and 0.06% by single-stage scrubbing. Then, Fe, Cu and Al loaded in organic phase were completely stripped by 0.5 mol/L H 2 SO 4 and 0.01 mol/L Na 2 SO 3 through a four-stage stripping. After impurities removal, more than 99.9% of Ni, Co and Mn in the raffinate solution were selectively co-extracted with 30 vol% CA12 (60% saponification degree) and 15 vol% TBP after a three-stage extraction, and 7.88% of Li was co-extracted. Then, after a four-stage scrubbing experiment, only 0.52% of Li was lost in the loaded organic phase, which demonstrated that our system possesses the potential of efficient recovery of Ni, Co and Mn from the spent LIBs. Further, Ni, Co and Mn loaded in the organic were completely stripped with 1 mol/L sulfuric acid, and could be directly used for the preparation of the recycled ternary material precursors. Finally, Li in the raffinate solution was recovered by precipitation using Na 2 CO 3 , with the yield and purity of 96.4% and 99.6%. Overall, this recycling process with high impurity removal efficiency and valuable metals recovery efficiency not only simplify the production process, but also greatly reduces production costs, which is helpful for the regeneration and utilization of spent LIBs.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hang Fu,Chonghua Shi,Zhitong Li,Jiajin Nie,Shaowei Yao
Herein, a unique dodecahedron composite material of Zn-Co bimetallic zeolitic imidazolate frameworks (ZIFs) and carbon nanotubes (CNTs) is synthesized by a simple room temperature static precipitation-annealing process. As an anode material for lithium-ion batteries (LIBs), the designed nanomaterials exhibits excellent lithium storage performance and cycle performance. It demonstrates a high discharge specific capacity of 720.9 mAh g -1 at 100 mA g -1 . Besides, a high reversible capacity of 608.7 mAh g -1 at a current density of 500 mA g -1 after 300 cycles. The significant improvement in the electrochemical performance of Zn/Co-ZIFs/CNTs nanocomposite can be attributed to the strong synergy between Zn/Co-ZIFs and CNTs.
研究领域:
材料科学
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电化学
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纳米技术
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2024
·
IF 5.9
Ziqiang Yang,Yingdong Yang,Bin Yang,Mengning Luo,Yue Zhang,Jibin Miao,Shijun Kang,Zhengzhi Zheng,Jiasheng Qian,Ru Xia,Yuchao Ke,Yang Pan
In this work, a non-solvent induced phase separation (NIPS) technique was used to prepare polyvinylidene difluoride (PVDF) lithium battery (LIB) separators. Firstly, vermiculite nanosheets (VNs) coated by polydopamine (PDA), i.e., VNs@PDA, was ultrasonically dispersed in DMAc and PVDF was solution-blended with VNs@PDA with final porous composite films obtained after the extraction of DMAc. Effects of the presence of VNs@PDA on both structure and properties of PVDF films were intensively studied, and the SEM observations further suggested that the addition of VNs@PDA heavily affected the thermodynamic parameters between the polymer and solvent, causing a remarkable enhancement on the thermodynamic instability of the PVDF solution system. The polymer–solvent phase separation by the addition of less nonsolvent tended to induce the formation of long finger-like pores. An incorporation of 7.0 wt% VNs@PDA resulted in an increase in ionic conductivity of the composite membrane from 0.320 mS·cm −1 to 1.515 mS·cm −1 via AC impedance tests. The incorporation of VNs@PDA not only enhanced the hydrophilicity of the composite films (as judged by water contact angle dropping from 112.7° to 74.2°), but also significantly improved both battery performance and mechanical properties. The present study provides a facile way of fabricating LIB separators with sufficiently high safety and superior performance.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Theoneste Nshizirungu,Masud Rana,Young-Tae Jo,Jeong-Hun Park
This study presents the development of an effective and environmentally friendly method to leach and to recover valuable metals, such as lithium (Li) and cobalt (Co) from the spent lithium-ion batteries (LIBs) using subcritical water assisted by nickel catalyst and waste chlorinated polyvinyl chloride (CPVC). The effects of reaction parameters, such as Ni 2+ concentration, temperature, time, and liquid-solid ratio on the leaching efficiencies of Li and Co were carefully investigated. The solid residues obtained thereof were characterized by XRD and SEM-EDS analyses, while the leachates were analyzed by ICP-OES. The ICP-OES results showed that about 99.05% of Li and 98.08% of Co were effectively leached from the spent LiCoO 2 powder under the following optimized reaction conditions: temperature of 240 °C, reaction time of 40 min, Ni 2+ concentration of 0.04 M, and the liquid-solid ratio of 25:1 mL/g, respectively. Finally, based on the precipitation method, the Li and Co were recovered from the leachate as Li 2 CO 3 and Co(OH) 2 . The results and the method applied in this research suggest that the leaching and recovery of Li and Co from the spent LIBs using subcritical nickel-containing water is an inexpensive, efficient, sustainable and eco-friendly technology.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2020
·Vol. 27
·期 8
·2717-2723
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IF 4.857
Zhuoran Lv,Wujie Dong,Bingquan Jia,Shaoning Zhang,Miao Xie,Wei Zhao,Fuqiang Huang
Graphical Linked by MOFs : Sn 2 O(CN 2 ) with loosely packed crystal structure possesses a metal–organic framework-like porous framework, which mitigates volume expansion and Sn atom aggregation. Sn 2 O(CN 2 ) shows a significantly enhanced lithium storage performance compared to traditional tin oxide. Metal-organic frameworks (MOFs) can become promising electrode materials for advanced lithium-ion batteries (LIBs), because their loosely packed porous structures may mitigate volume expansion and metal atom aggregation, which occur at the respective metal oxides. However, they suffer from poor electrical conductivity and irreversible structural degradation upon charge/discharge processes, which impede their practical utilization. Herein, we investigate MOF-like Sn 2 O(CN 2 ) as a new electrode material. The conductive yet flexible [N=C=N] linkers are tilted between [Sn 4 O] nodes and cross-linked into a porous quasi-layered structure. Such structure offers abundant channels for fast Li-ion transport and tolerance of enormous volume expansion. Notably, anisotropic [N=C=N] 2− arrays hardly migrate so that Sn 0 nanodots are physically separated via robust [N=C=N] 2− framework during discharge, thereby effectively preventing the formation of large Sn islands. Owing to the structural advantage, the Sn 2 O(CN 2 ) electrode exhibits an initial Coulombic efficiency as high as ∼80 %. With the addition of graphite as conductive supporter, the electrode provides 978 mAh g −1 at 1.0 A g −1 even after 300 cycles. Such MOF-like carbodiimides hold potential for the advanced electrodes in LIBs and other battery systems.
研究领域:
材料科学
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能量存储
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电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 14
·4473-4482
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IF 9.48
Shubin Wang,Zuotai Zhang,Zhouguang Lu,Zhenghe Xu
Deep eutectic solvents (DESs), as a green alternative technology, exhibit great potential to recycle valuable elements from spent lithium-ion batteries (LIBs). However, due to the weak reducing power of DESs, raising the temperature and extending the duration of processing are not efficient for screening suitable DESs for the recycling of LIBs. Here, we propose a novel, simple and robust experimental method to identify suitable DESs for recycling spent LIBs. Based on electrochemical principles, the method proposed in this study can be used to quickly determine the reducing power of DESs. As an example, a choline chloride (ChCl) and urea mixture as a DES was found to possess strong reducing power, with a Li and Co extraction efficiency of 95% from spent LIBs obtained at a reduced reaction temperature of 180 °C and reaction time of 12 h. The results are in good agreement with the results from Fukui functions calculations. The kinetic experiments revealed that the Li and Co extraction is controlled by solution and electron diffusion through the DES. Furthermore, a cubic cobalt oxide spinel (Co3O4) was obtained from the loaded DES using H2C2O4 and NaOH in the dilution–precipitation–calcination process. The current strategy demonstrates great potential for rapid and reliable screening of suitable DESs for the effective recycling of spent LIBs.
研究领域:
材料科学
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环境工程
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化学工程
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-11
·
IF 5.228
He Qinghua,Liu Yixi,He Yonghong,Zhu Liang,Zhang Yilong,Shen Zhiyuan
We show a coding method of suspension array based on the laser induced breakdown spectroscopy (LIBS), which promotes the barcodes from analog to digital. As the foundation of digital optical barcodes, nanocrystals encoded microspheres are prepared with self-assembly encapsulation method. We confirm that digital multiplexing of LIBS-based coding method becomes feasible since the microsphere can be coded with direct read-out data of wavelengths, and the method can avoid fluorescence signal crosstalk between barcodes and analyte tags, which lead to overall advantages in accuracy and stability to current fluorescent multicolor coding method. This demonstration increases the capability of multiplexed detection and accurate filtrating, expanding more extensive applications of suspension array in life science.
研究领域:
分析化学
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生物技术
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材料科学
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生命科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yushan Hou,Liping Cui,Qin Wang,Meilin Wang,Gang Li,Kai Yu
Keggin-type polyoxometalate (POM) is a new pseudocapacitive material with advanced multi-electron conduction capability, good mechanical and thermal stability. However, owing to the limited specific interfacial area and inferior conductivity of POMs, it is difficult to exert its excellent redox properties as an electrode material alone. In an effort to overcome these limitations, a heterostructured material MnPMo 8 V 6 @MXene/MoS 2 was developed using a combination of hydrothermal method and electrostatic adsorption, leveraging the synergistic self-assembly of multiple substances. The morphology and sufficient structural characterization reveal that Keggin POM and MoS 2 were homogeneously anchored on the accordion-like MXene leading to a triaryl composite. The resulting composites demonstrate improved overall performance and more efficient ion/electron transport capacity as anode materials for LIBs compared to single-component and binary materials. Typically, the compound presented a superior reversible capacity of 1061.3 mA h g −1 at 0.1 A g −1 , a high capacitance retention of 851.1 mA h g −1 after 300 cycles, and a prominent rate capacity of 450.3 mA h g −1 at 2.0 A g −1 , which surpasses the performance of most reported anodes for LIBs. Kinetic calculations also indicate that the charge accumulation functionality of MnPMo 8 V 6 @MXene/MoS 2 involves diffusion and pseudocapacitive behavior. This study combines the outstanding Faraday properties of Keggin POM, the mechanical strength of MoS 2 and the ultra-high conductivity, low impedance and high specific surface area of accordion-like MXene into the ternary composite. Meanwhile, a unique 3-D conductive network is formed among POM with regular channels, MoS 2 nanosheets and accordion-like MXene. The complementary performance and favorable morphology make the three components produce perfect synergistic effect and outstanding comprehensive lithium-ion batteries performance.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Wei Wang,Zun Man,Leiping Wang,Yun Kou,Tiantian Pan,Yiying Zhao,Tingting Shen,Sai Xu,Hang Xiao,Fei Liu
Heavy metal pollution in water environments has emerged as a critical global concern, posing severe threats to ecological security and human health. Although laser-induced breakdown spectroscopy (LIBS) provides an effective means for elemental detection, matrix interferences caused by liquid vaporization, splashing, and surface oscillation have hindered its application in liquid-phase analysis. To address the challenges, this study developed a novel method for rapid cadmium detection using EDTA (ethylenediaminetetraacetic acid)-modified glass fiber membrane-assisted LIBS. Through systematic evaluation of signal enhancement effect and quantitative detection performance, the glass fiber membrane demonstrated optimal suitability as a cadmium adsorption substrate for LIBS, attributable to its notable adsorption-excitation synergistic effect ( R² > 0.9211). EDTA was used to modify the fiber membranes, and calibration curves for LIBS-EDTA-fiber membrane method were established. The results indicated that EDTA modification contributed to enhanced cadmium detection capability, with the EDTA-glass fiber membrane exhibiting excellent performance at Cd II 226.50 nm line ( R² = 0.9443, LOD = 1.28 mg/L), which fully verifies the promise of EDTA-modified membranes as effective adsorption substrates. Additionally, the key parameters of adsorption pretreatment were optimized, with recommended combination determined as follows: pH 5.0–7.0, adsorption time 10–15 min, and drying time 30–40 min, which collectively balance the intensity and stability of spectral signals. LIBS-EDTA-glass fiber membrane method effectively mitigates the matrix interference of LIBS detection through an integrated strategy of efficient Cd²⁺ enrichment and aqueous phase separation. With advantages of rapidity, accuracy, and cost-effective, it provides reliable technical support for on-site monitoring of cadmium pollution in water.
研究领域:
环境监测
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分析化学
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光谱学
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水质分析
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重金属检测
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Yuhui Weng,Xingyu Sun,Siying Li,Zhuoying Wu,Ziwei Chen,Yongqun Ma,Zefan Zheng,Feng Lin,Ming Zhang,Kejun Zhang,Min Ling,Keli Yang,Chengdu Liang,Jun Chen
High-capacity silicon (Si)-based anodes have been recognized as particularly promising candidates for high-energy-density lithium-ion batteries (LIBs). Rational design and tailoring of an artificial interface for Si anodes can effectively mitigate volume expansion, suppress detrimental side reactions, and enhance lithium-ion (Li+) diffusion kinetics—three critical factors widely acknowledged as fundamental prerequisites for enabling long-term cycling stability and fast-charging capabilities. Therefore, we introduced an organic/inorganic composite interface design strategy combining high elasticity and ion-conductive properties. Lithium metasilicate (LMS) not only functions as an effective protective layer and Li+ conductor but also inhibits lithium hexafluorophosphate (LiPF6) hydrolysis to suppress the generation of corrosive hydrofluoric acid (HF). When integrated with carboxyl-rich polyacrylic acid (PAA), the nanocomposite coating layer demonstrates high elasticity to accommodate volume expansion, establishes continuous Li+ diffusion pathways, and promotes the formation of a robust lithium fluoride (LiF)-rich artificial solid-electrolyte interphase (SEI). Consequently, the as-developed Si@PL-10 electrode demonstrates significantly enhanced cycling performance (2297 mAh g−1 after 200 cycles at 1 A g−1) and high-rate capability (1854 mAh g−1 at 6 A g−1). This work provides valuable insights for designing scalable multifunctional coatings for high-performance Si anodes.
研究领域:
储能技术
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材料科学
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电化学
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纳米技术
·
电池技术
✓ 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）