ACS Applied Engineering Materials
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2022
·
IF 0
Baoguo Zhang,Haoyu Zhang,Bing Ai,Kefeng Pan,Weimin Zhang,Degang Li,Lipeng Zhang,Zhongning Shi
Due to the wide range of potential applications of metallic Li and other active metals, the development of simple and cost-effective electrochemical methods for extracting these metals from their salts is greatly important. Accordingly, herein, an electrochemical solvometallurgy technology pathway is proposed to realize the recovery of metallic Li at room temperature. A low-cost aprotic polar molecular liquid, dimethylformamide (DMF), was selected for electrowinning of Li with abundant LiCl as the raw material. Subsequently, the electrolyte structure of the optimized binary DMF/LiCl system (0.7 M LiCl) was analyzed using 7Li nuclear magnetic resonance spectroscopy, Fourier-transform infrared spectroscopy, and theoretical calculations. Electrochemical reaction mechanisms were elucidated through cyclic voltammetry and ultraviolet–visible absorption spectrometry. Finally, the Li coating was successfully obtained using potentiostatic deposition on a high-purity In substrate in the form of nanoalloy sheets. To realize the transformation of electrodeposited materials from the “thin film” to the “bulk”, a continuous, direct smelting electrodeposited film short-process technique was proposed to achieve recovery of stable metallic Li in the form of a bulk Li–In intermediate alloy. This low-energy, low-carbon, and sustainable strategy can be applied for the low-temperature electrochemical recovery of reactive (Li, Mg, Al, and Ti) and rare-earth metals.
研究领域:
材料科学
·
冶金工程
·
电化学
✓ 已验证
DOI
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
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2011
·
IF 1.107
Zhiqiao He,Angliang Zhang,Yu Li,Shuang Song,Zhiwu Liu,Jianmeng Chen,Xinhua Xu
Ozonation combined with UV irradiation (UV/O3) is an advanced oxidation technique that is very promising for the destruction of organic compounds in aqueous solution. In this study, chlorophene was chosen as a model substrate to investigate the effects of pH, initial substrate concentration, ozone dose, and UV light intensity in degradation experiments. The pseudo–first-order rate constant for total organic carbon (TOC) removal was 2.4 × 10−2, 9.8 × 10−4, and 6.4 × 10−2 min−1 for O3, UV, and UV/O3 treatment, respectively. Clearly, UV-enhanced ozonation leads to a synergetic increase in the overall degradation efficiency. Comparative experiments were performed to investigate the effect of the matrix (distilled water or sewage) on chlorophene removal. The organic compounds in sewage retarded the rate of chlorophene removal by 38%, probably by competitively reacting with the oxidizing agent and screening light. The compound 2-benzoylbenzo-1,4-quinone, benzo-1,4-quinone, hydroquinone and maleic acid were identified as primary intermediates by gas chromatography-mass spectrometry. The concentrations of acetic, formic and oxalic anions were detected by ion chromatography. A possible degradation pathway is proposed on the basis of the reaction products identified.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
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2024
·
IF 6.3
Miao Yu,Xinyuan Lv,Ziqi Wang,Minghao Sui
Virus-induced risks to water quality persist, with the viability of viruses in complex aquatic environments impacted by various factors, including coexisting bacteria and exposure to light. This study investigated the disinfection efficacy of UV 254 irradiation and free chlorine (FC) on Bacteriophage phiX174 in the presence of coexisting bacteria, specifically Escherichia coli ( E. coli ) and Bacillus subtilis ( B. subtilis ). To elucidate the underlying mechanisms, this study examined the effects of bacterial compounds (i.e., E. coli lipopolysaccharide (LPS) and B. subtilis peptidoglycan (PGN)) on viral inactivation, thermal stability, and environmental persistence. The research results demonstrated that bacterial presence and their associated compounds significantly impaired viral inactivation, with greater concentrations of coexisting bacteria and their compounds exacerbating this effect. Additionally, the photoreactivation of phiX174 was explored following UV 254 irradiation, indicating that high-dose UV 254 , coupled with low nutrient availability and minimal host bacteria levels, effectively suppressed viral photoreactivation. This study is the first to investigate the multifactorial effects on viral photoreactivation. The results offer novel insights into the challenges associated with virus-related pressures in water treatment, with potential implications for optimizing disinfection processes.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
FORENSIC SCIENCE INTERNATIONAL
·
2014
·
IF 2.115
Binling Zhu,Liang Meng,Kefang Zheng
Recently a new type of mixed drug oral solution has become prevalent in China, the identification and quantitative inspection of which are demanded in conviction and sentencing as well as drug intelligence. In 2013, inspection was carried out on 86 bottles of substances seized in 13 cases with the adoption of GC–MS methodology for qualitative identification and GC–FID for quantitative identification. 94.1% of the samples were light yellow turbid liquid while 95.3% were detected with more than two drugs. Detection rate of methamphetamine, MDMA and ketamine was up to 89.5%, 37.2% and 83.7% respectively. Quantitative inspection results indicated that concentrations of methamphetamine, MDMA , ketamine were 0.04–13 mg/mL, 0.04–29 mg/mL and 0.1–34 mg/mL, respectively. Appearance, composition and drug concentration of samples vary from case to case.
研究领域:
毒理学
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分析化学
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法医学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Zhouwei Miao,Xiaogang Gu,Shuguang Lu,Mark L. Brusseau,Xiang Zhang,Xiaori Fu,Muhammad Danish,Zhaofu Qiu,Qian Sui
The performance of Fe(III)-based catalyzed sodium percarbonate (SPC) for stimulating the oxidation of tetrachloroethene (PCE) for groundwater remediation applications was investigated. The chelating agents citric acid monohydrate (CIT), oxalic acid (OA), and glutamic acid (Glu) significantly enhanced the degradation of PCE. Conversely, ethylenediaminetetraacetic acid (EDTA) had a negative impact on PCE degradation, which may due to its strong Fe chelation and HO scavenging abilities. However, excessive SPC or chelating agent will retard PCE degradation. In addition, investigations using free radical probe compounds and radical scavengers revealed that PCE was primarily degraded by HO radical oxidation in both the chelated and non-chelated systems, while O 2 − also participated in the non-chelated system and the OA and Glu modified systems. According to the electron paramagnetic resonance (EPR) studies, the presence of HO in the Fe(III)/SPC system was maintained much longer than that in the Fe(II)/SPC system. The results indicated that the addition of CIT, OA or Glu indeed enhanced the generation of HO in the first 10 min and promoted degradation efficiency by increasing the amount of Fe(III) and maintaining the concentration of HO radicals in solution. In conclusion, chelated Fe(III)-based catalyzed SPC oxidation is a promising method for the remediation of PCE-contaminated groundwater.
研究领域:
环境科学
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化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Qingming Song,Ya Liu,Lingen Zhang,Zhenming Xu
With a huge amount of waste liquid crystal displays (LCDs) generated annually, their proper recycling raises continuous concern to realize pollution control (heavy metal and liquid crystal) and resource recovery (indium). However, due to their multi-metal feature, traditional hydrometallurgy lacks of sufficient selectivity, which makes the recycling route lengthy, costly, and generate more waste. Electrodeposition acts as a promising technique for selective metal extraction from multi-metal system due to its high selectivity and electron as clean reagent. To fully develop its application in metal recovery, stepwise Cu/MoO 2 and In electrodeposition from In-Cu-Mo-Fe waste LCD leachate is explored in depth. Electrochemical behavior analysis shows Cu and MoO 2 can be first electrodeposited for their higher electroreduction potential. Cl - plays a key role in accelerating indium electroreduction kinetics, which largely shortens the extraction time without the sacrifice of current efficiency . This accelerating effect is attributed to the increased concentration of electroactive species or collision frequency . Under optimized condition, 99.41% of indium (> 99% purity) can be electrodeposited within 13 h with high current efficiency. This study provides a cleaner approach for waste LCDs recycling and gives implications for the potential application of electrochemical technique in e-waste recycling.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
HYDROMETALLURGY
·
2025
·
IF 5.3
Minxiu Zhou,Hui Su,Yaoxian Hu,Wensen Liu,Zhaowu Zhu,Tao Qi,Daoyong Lin
The increasing adoption of lithium-ion batteries in new energy sectors has substantially increased lithium consumption. Chilean salt lakes consist of high concentrations of Li + , (1.14 g/L) and Ca 2+ (>10 g/L) and low concentration of Cl − (<200 g/L). The TBP-FeCl 3 system can efficiently extract lithium from high Mg brine, but the system has not yet been studied in low chloride and high calcium brine. In this paper, the effect of different extraction, scrubbing, and stripping conditions on the lithium extraction percentage from this type of brine was investigated using a TBP-FeCl 3 system. The results indicated that 100 % TBP mixed with brine containing 15–20 g/L Fe 3+ and 0.05 mol/L HCl at O/A = 1:1, extracted 52.9 % of Li + and produced an organic phase of 0.72 g/L Li + , accompanied by Ca 2+ and Na + concentrations of 2.82 g/L and 2.47 g/L, respectively. The extraction percentage of Li + reached 74.2 % after a four-stage extraction process. The loaded organic phase was scrubbed with 4 mol/L LiCl solution at O/A = 1:1, and the scrubbing percentage of the impurity ions was >90 %. The scrubbed organic phase was stripped by simulated counter-current stripping by 2.5 mol/L HCl at O/A = 15:1 for ten stages, and the recovery of Li + was 80.3 %. The stripping solution had a Li + concentration of 25.3 g/L and an impurity ion concentration of <1 g/L and the loss of Fe 3+ was <100 mg/L. The TBP-FeCl 3 extraction system offers the efficient and direct extraction of lithium from Chilean brine and provides technical support for the clean mining of lithium resources in South American salt lakes.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Baoshuai Xing,Xiaoli Cheng,Tingting Wang,Xianfa Zhang,Lihua Huo,Yingming Xu
Chlorine (Cl 2 ) is a highly hazardous and corrosive substance that can cause severe respiratory problems and skin burns in humans at low doses. The effective detection of Cl 2 has become critical for protecting both the ecological environment and public health. Herein, the oxygen vacancy-abundant SnO 2 were synthesized using SnS as template followed by the calcination method. The resultant SnO 2 -800 sensor exhibits improved sensing response to Cl 2 (about 205–10 ppm) at room temperature, together with a trace detection limit of 100 ppb. Such excellent sensing properties could be assigned to several reasons including the unique cross-linked structure, the appropriate amount of grain boundaries, and especially sufficient oxygen vacancies. The XPS, GC-MS techniques and DFT theoretical calculation were combined used to detailly investigate the sensing mechanism. This work might shed light on the rational design of high-performance sensing materials via defect engineering.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Processes
·
2025
·Vol. 13
·期 5
·1525
·
IF 2.8
Yue Chen,Xiaofei Guan
Recycling the positive electrode materials of spent Li-ion batteries is critical for environmental sustainability and resource security. To facilitate the attainment of the goal, this study presents a novel approach for recovering valuable metals from positive electrode materials of spent lithium-ion batteries (LIBs) in an H-shaped cell containing aqueous NaCl electrolyte. The process employs hydrochloric acid that could be derived from the chlorine cycle as the leaching agent. The electrolytic device is engineered to generate a high pH gradient, thereby enhancing the leaching of metal elements and eliminating the requirement for external acid or base addition. This green recycling approach adheres to the principles of a circular economy and provides an environmentally friendly solution for sustainable battery material recycling.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Crystals
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2025
·Vol. 15
·期 5
·451
·
IF 2.4
Chunli Cai,Qian Wang,Changsheng Yin,Xuhuan Li,Rong Yang,Xiaodong Shen,Wenbo Xin
AgCl microcrystals are used in visible light photocatalysis. However, their properties depend strongly on the morphology of the crystals and the degree of exposure of the crystal planes. Despite extensive research conducted on the synthesis of AgCl microcrystals, the majority of existing studies have focused on the stable growth of crystals. The role of Cl−ions concentration as a key factor controlling the microcrystals morphology has not been fully explored, which limits the precise tuning of the morphology of AgCl microcrystals. In this study, AgCl microcrystals with controllable morphology are successfully synthesized by a facile solvothermal method. During the preparation process, ethylene glycol (EG) is utilized as a solvent, while polyvinylpyrrolidone (PVP) is employed as a surfactant. We systematically investigate the etching mechanism of AgCl microcrystals by analyzing the effect of sodium chloride (NaCl) concentration on their morphology. This investigation involves the integration of diverse characterization methods, including scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and geometrical struc-ture analysis. The results demonstrate that Cl−functions as both a surfactant, thereby promoting the nucleation of cubic microcrystals, and as an etchant, selectively etching the crystal surface. The order of selective etching on the crystal surface follows (100) planes > (110) planes > (111) planes. Based on this new mechanism, AgCl microcrystals with various morphologies, such as cube, octopod and dendrite, are successfully prepared, which provides a new idea for the precise design of noble metal halide microcrystals.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2025
·
IF 3.1
Zihe Yang,Linjie Li,Bin Deng,Yusen Xu,Yujing Du,Yongning Lv,Xuejia Zhai
Major depressive disorder is a severe mental condition characterized by abnormalities in the structure and function of the brain. Ketamine is a novel antidepressant that has rapid effects on depression. This drug is clinically used to treat depression in patients with acute suicidal ideation or behavior. It is typically administered at a dose of 84 mg. However, the distribution of ketamine in the body after intranasal administration, particularly in the brain, remains unknown. In the present study, we utilized a high-performance liquid chromatography-tandem mass spectrometry method to measure ketamine concentrations in rat plasma and several tissues. The measurement ranges were 5–8000 ng/mL for the plasma samples and 5–5000 ng/mL for the tissue samples. The pharmacokinetic profile revealed that the rat plasma ketamine concentration rapidly spiked to a peak of 8002 ng/mL within about 5 min, followed by a rapid decline, nearly reaching 0 ng/mL by about 3 h; the half-life was 27 min. Tissue distribution results revealed that ketamine concentrations in different tissues peaked at 5 min. The highest concentration was noted in the kidneys, followed by the liver. In the rat brain regions, ketamine was primarily concentrated in the hypothalamus and hippocampus, with lower concentrations in the striatum and prefrontal cortex. Our novel methodological approach and findings provide a significant theoretical foundation for using ketamine in clinical settings.
研究领域:
药理学
·
神经科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Yixuan Wang,Zhenmin Cheng,Quanjie Liu,Chao Yang,Liming Jia,Chen Yang,Hongxin Bai
Anthracene is characterized by its unique electronic and organic properties as the cornerstone for various applications. Particularly in the synthesis of anthraquinone derivatives, anthracene serves as the key raw materials in the alkylation and oxidation, acting as the hydrogen carrier for hydrogen peroxide production via AO process. However, inadequate knowledge about its dissolution behavior in solvents has been one of the main limitations for its purification and practical applications, commonly resulting in its unsatisfactory commercial products and thus leads to insufficient efficiency of chemical synthesis. In this study, the solubility behavior of anthracene in various solvents was specifically investigated by the synthetic method at temperatures ranging from 304.15 to 338.15 K under atmospheric pressure. To facilitate decent solvent s screening, aromatics such as benzene and its derivatives were specifically exploited as the working solution components in this work. The experimental solubility values and their corresponding activity coefficient of anthracene were analyzed and correlated on the basis of modified Apelblat and λ-h models. Furthermore, thermodynamic analysis, including the changes of enthalpy, entropy, and Gibbs free energy, was subsequently conducted using the modified Van’t Hoff equation. As a result, the dissolution of anthracene is an endothermic and entropy-driven process in studied solvents, among which chlorobenzene seems to be the most actively interactive with anthracene and thus results to the best dissolving capacity for anthracene.
研究领域:
化学工程
·
物理化学
✓ 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）