COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Feiyue Wang,Xue Song,Yongde Liu,Jie Zhang,Jihong Zhao,Yue Chen
Diclofenac (DCF), a widely used pharmaceutical ingredient, exhibits long-lasting properties and significant ecotoxicity in aquatic ecosystems. In this study, a new granular adsorbent, GSBE@C H-CTAB , was synthesized to remove DCF by initially granulating powder spent bleaching earth carbon (SBE@C) with polytetrafluoroethylene (PTFE) emulsion as a binding agent, followed by a co-modification process involving H 2 SO 4 and cetyltrimethyl ammonium bromide (CTAB). The adsorption capacity of the prepared adsorbent for DCF under the best conditions was 4.26 mg/g. In a wide pH range, GSBE@C H-CTAB could maintain a high adsorption capacity and show a good reusability. The presence of the three cations inhibited the adsorption of DCF (inhibition effect: Mg 2+ >Al 3+ >Na + ). The adsorption process conformed to the pseudo-second-order kinetic model and Langmuir isotherm model. From the theoretical evaluation results, it could be inferred that DCF molecules were adsorbed on GSBE@C H-CTAB surface in both horizontal and non-horizontal directions at all operating temperatures. The main mechanisms of adsorption included electrostatic interaction, pore filling interaction, π-π interaction and H bond interaction. The granular adsorbent GSBE@C H-CTAB prepared in this study could effectively remove DCF, treat waste with waste, and solve the problem that powder adsorbent was easy to lose and difficult to recover, which was of great significance for the remediation of polluted water.
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
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Liang Xing,Yating Kang,Yifan Zhou,Ying Ye,Xiao Zhang,Yuanfeng Huang,Chen-Tung Arthur Chen,Huawei Qin
An all-solid-state sulfate selective-electrode, with Au wire as the substrate and H 2 SO 4 doped polyaniline (PANI) as the sensitive membrane, has been proposed. The effect of polymeric monomers concentration, oxidization potential, and solvent component on the electrochemical reaction has been optimized for further improving the performance of the electrode. The membrane is prepared by electro-polymerization with 0.1 M aniline hydrochloride dissolved in 1 M H 2 SO 4 , 0.0005 sampled interval, and setting scanning potential at 0.8 V give the excellent Nernstian linear response to sulfate in the concentration range of 8.0 × 10 -5 to 1.0 M of Na 2 SO 4 solutions made by freshly prepared 3.5% NaCl solution, with a slope of -26.62 mV per decade (R 2 >0.99). The potentiometric response of the electrode is independent of pH in the range of 5.5-8.5. The scanning electron microscope (SEM) observation reveals that H 2 SO 4 doped PANI formed cross-linked rods nearly 0.2-0.4 um in length and 0.1um in thickness on the surface of the Au wire. Bulk impedance of the electrode is about 36 Ω, much lower than the glass and poly (vinyl chloride) (PVC) electrode reported. The utility of the new sulfate electrode has been used as a sensor for the determination of sulfate concentration in seawater successfully. Particularly, the electrode is in a small size and convenient for both integrate and assembly to capture in-situ data in distant and inaccessible sites, which is superior to those existing jelly-like and mechanically non-robust sulfate electrodes for real-word in-situ monitoring.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 38
·13336-13341
·
IF 7.059
Gaoping Xu,Leipeng Zhang,Bo Wang,Zichen Ren,Xi Chen,Shuliang Dou,Feifei Ren,Hang Wei,Xiaobai Li,Yao Li
Flexible polyaniline films doped by H2SO4–HClO4 multiple acids were synthesized, and for the first time, their electrochromic mechanism was studied via optical characterizations from the aspects of polarons and roughness. The electrochromic device based on the doped polyaniline films as the active material exhibits Δε of 0.47 in 8–14 μm and reflectivity higher than 80% in 250–400 nm, which can be integrated with the white snow environment in the UV-vis-infrared spectroscopy due to the sunlight scatter from the abundant micropores. In addition, the device exhibits a superior fast electrochromic behavior and stability of more than 200 cycles without compromising its performance. More importantly, the finite-element method and experimental results demonstrate that the device can achieve thermal management upon flat and twisted configuration. The flexible device shows promise for a broad range of potential applications in optical and thermal regulation systems.
研究领域:
材料科学
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光学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Ahmed H. Tantawy,Kamal A. Soliman,Hany M. Abd El-Lateef
Three novel quaternary bisammonium fluorosurfactants (FGS-4, FGS-6, and FGS-8) were designed and synthesized using furan-2,5-diylbis(methylene) bis(2-bromoacetate) with N-(3-(dimethylamino)propyl)-1,1,2,2,3,3,4,4,4-nonafluoroalkan-1-sulfonamide through a heterocyclic spacer of 3,3′-((furan-2,5-diylbis(methylene))bis(oxy))bis(3-oxopropan-1-ylium) to connect two fluorocarbon tails. Their corrosion protection characteristics of mild steel/1.0 M H 2 SO 4 solution interface at different temperatures were inspected by electrochemical (PDP and EIS) and weight loss measurements. The PDP plots established that the three-quaternary bisammonium fluorosurfactants are mixed-type inhibitors; EIS experiments exhibited that the as-prepared surfactants possess the superior protection capacities of 93.5 % (FGS-4), 95.5 % (FGS-6), and 96.6 % (FGS-8) at the optimum dose of 2.00 mmol L −1 . The Adsorption considerations showed that the three additives demonstrated both the physisorption and chemisorption mechanisms and followed the Langmuir model. Surface morphology investigations indicated that the synthesized fluorocarbon surfactants impeded mild steel corrosion. The relationships between the protection performance of the fluorocarbon surfactants, their molecular configurations, and the adsorption mode were checked by DFT calculations and MD simulations, which confirmed that FGS-8 has a higher protection power than FGS-4 and FGS-6. The current investigation exhibited that quaternary bisammonium fluorosurfactants could be used as eco-friendly, economic, and efficient inhibitors for mild steel corrosion with the probable for extensive applications.
研究领域:
材料化学
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电化学
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计算化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Tao Jiang,Pengcheng Wang,Tao Zhang,Deqing Zhu,Zhihong Liu
Owning to the lack of commercial independent germanium deposit and the ever-growing germanium demand of high-tech field, the recovery of germanium from various resources shows strategic significance. In this study, a novel solvent extraction system based on primary amine (N1923) and hydroxycitric acid (HCA) was developed to recover germanium from leaching liquors of secondary zinc oxide and some typical resources. The results indicated that the solvent system showed high extraction efficiency and germanium selectivity ; equilibrium pH and the dosage of HCA were the key parameters for germanium recovery, the germanium extraction capacity of an organic phase with 0.24 mol/L N1923 was 7.97 g/L; germanium could be separated from zinc, arsenic, iron, and cadmium at an equilibrium pH of 1.0, and the separation factors of germanium to those elements were up to 1778, 232, 67074, and 14706, respectively; the system was also with well separation performance of germanium from typical germanium containing leachates of copper cake and coal fly ash. Stoichiometry analysis and FT-IR, NMR, and ESI-MS spectra demonstrated that the extraction of germanium followed a coordination anion extraction mechanism, the germanium extraction complexes was RNH 3 ⋅GeO 2 C 6 H 4 O 7 . 0.5 mol/L NaOH can be selected for the stripping of germanium. 2
研究领域:
冶金学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
·
IF 6.76
Yue Wang,Yujie Qiang,Hui Zhi,Boyuan Ran,Dawei Zhang
In recent years, many plant extracts have been used as green corrosion inhibitors to replace traditional corrosion inhibitors, but their inhibition performance still needs to be improved. The synergistic corrosion inhibition behavior and mechanism of maple leaves extract (MLE) and potassium iodide (KI) on Q235 steel in 0.5 M H 2 SO 4 solution were firstly investigated in this work. The results demonstrate that both MLE and KI can prevent the corrosion of steel in corrosive media, and that their combined protection effect is superior. The corrosion inhibition efficiency ( η ) value reaches 93.4 % in corrosive solution with the combination of 200 mg/L MLE and 200 mg/L KI, while the maximum of η is only 81.6 % using MLE alone. In addition, Fe-N bond and Fe-O bond were found on the steel surface through the X-ray photoelectron spectroscopy (XPS) analysis, which confirm the formation of a protective film. The adsorption behavior of an inhibitory film composed of MLE and KI mixtures onto steel surface follows the Langmuir adsorption isotherm model, consisting of physisorption and chemisorption. Finally, molecular dynamics (MD) simulation indicates that inhibitor molecules can adsorb on the Fe substrate in a parallel way with high binding energy values, which supports the experiments well.
研究领域:
材料科学
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绿色化学
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2026
·
IF 2.6
Li Shanjian,Ren Jie
Polydopamine (PDA) coatings have great potential for corrosion protection in harsh acidic industrial environments. However, their performance and failure mechanisms in strongly acidic media at identical H⁺ concentrations but with different anions remain unclear. This work systematically compares the corrosion inhibition behavior of PDA coatings on N80 steel in hydrochloric acid and sulfuric acid media using static weight-loss measurements, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), UV-Vis spectrophotometry, and surface characterization. The results demonstrate significant anion-dependent behavior. At 25 °C, the corrosion inhibition efficiency reached 96.55% in 0.05 mol L −1 H 2 SO 4 with a coating peeling rate of only 1.22%. In contrast, the efficiency was only 59.72% in 0.10 mol L⁻ 1 HCl with a peeling rate of 3.38%. The charge-transfer resistance was higher and the coating structure was more stable in H 2 SO 4 . Increasing the acid concentration or temperature reduced the protective performance of the coating, with faster degradation observed in HCl. The Mechanistic analysis indicates that small, highly mobile Cl⁻ ions penetrate the coating and disrupt intermolecular interactions, whereas SO 4 2 ⁻ interacts weakly with protonated PDA, thereby preserving coating integrity. These results provide a theoretical basis for designing PDA-based anticorrosion coatings for high-chloride acidic industrial environments.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Zong-Yi Zhou,Shi-Ying Li,Jiao-Jiao Cao,Long Hao,Bo-Kai Liao,Xing-Peng Guo
Rationale Copper alloys are widely used in industrial applications due to their excellent thermal and electrical conductivity, but they suffer severe corrosion in acidic environments, necessitating the development of efficient and eco-friendly corrosion inhibitors to protect copper alloys from corrosion. Objective This study aims to explore the corrosion inhibition performance and intermolecular synergistic behavior of licorice ( Glycyrrhiza uralensis Fisch.) leaf extract (LE), a waste-derived natural product, for copper alloys in 0.5 mol/L H 2 SO 4 solution. Materials and methods Waste licorice leaves are processed via Soxhlet extraction using pure water as a solvent to prepare LE, which was confirmed to contain glycyrrhizic acid and glabridin as the main active components. Electrochemical measurements, surface characterizations, and theoretical calculations are employed to evaluate the corrosion inhibition efficiency and mechanism. Conclusion Results show that LE exhibits corrosion inhibition ability, with a maximum efficiency of 91.2 % at 200 mg/L. When compounded with potassium iodide, the optimal efficiency increases to 95.3 % and further reaches 99.3 % after 144 h immersion. The excellent performance is attributed to the formation of complexes between LE components and Cu + , as well as insoluble copper(I) iodide (CuI) generated by I - and Cu + on the metal surface, which together forms a dense protective film to hinder corrosive substance diffusion. Glycyrrhizic acid and glabridin demonstrate intermolecular synergism, with higher glabridin content enhancing the barrier effect of the inhibitor film. Prolonged immersion promotes the formation of a more complete and compact film, significantly improving long-term inhibition performance. This work highlights the potential of waste licorice leaf extract as an efficient, sustainable corrosion inhibitor for copper alloys in acidic media, providing insights into the synergistic mechanisms underlying its performance.
研究领域:
材料科学
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腐蚀工程
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绿色化学
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可持续材料
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电化学
✓ 已验证
DOI
高影响因子
Minerals
·
2023
·Vol. 13
·期 3
·318
·
IF 2.5
Yingli Chen,Xiyun Yang,Linglong Wu,Lirong Tong,Jing Zhu
This paper describes a leaching-purifying-precipitation process to recover magnesium from serpentine acid-leaching solution and to synthesize high purity Mg(OH)2and 4MgCO3·Mg(OH)2·4H2O. Fe, Al, and Cr in the leaching solution were removed using the oxidation precipitation method with active MgO as a precipitant and H2O2as an oxidant. Ni, Co and Mn were removed by Na2S precipitation to obtain a pure MgSO4solution. Mg2+ions were first precipitated with NH3·H2O to synthesize Mg(OH)2, followed by NH4HCO3precipitation to obtain 4MgCO3·Mg(OH)2·4H2O. A small part of MgSO4coprecipitates with Mg(OH)2to form MgSO4·5Mg(OH)2·3H2O. The Mg(OH)2was aged with a diluted NaOH solution to remove the sulfur; the two-stage precipitation percentage of Mg is 96.3%. Mg(OH)2has a purity of 98.48% with a sulfur content of 0.28%. This process provides a promising method for the high-efficiency recovery of Mg and the large-scale production of the high purity of Mg(OH)2from the serpentine.Keywords:serpentine;two-stage counter current leaching;remove impurity;MgSO4·5Mg(OH)2·3H2O;high purity Mg(OH)2
研究领域:
冶金工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Zihan Qin,Yuzhen Wang,Liang Sun,Yuanxiang Gu,Yan Zhao,Lei Xia,Yang Liu,Bart Van der Bruggen,Yang Zhang
Industrial applications and environmental awareness recently prompted vanadium recovery spell from secondary resources. In this work, a polymer inclusion membrane containing trioctylmethylammonium chloride as carrier was successfully employed in electrodialysis for vanadium recovery from acidic sulfate solutions. The permeability coefficient of V(V) increased from 0.29 µm·s -1 (without electric field) to 4.10 µm·s -1 (with the 20 mA·cm -2 current density) . The transport performance of VO 2 SO 4 - , which was the predominant species containing V(V) in the acidic region (pH <3), was influenced by the aqueous pH value and sulfate concentration. Under an electric field, a low concentrated H 2 SO 4 solution (0.2 M) effectively stripped V(V) from the membranes, avoiding the requirement of a highly concentrated H 2 SO 4 without electric field. Under the optimum conditions, the permeability coefficient and flux reached 6.80 µm·s -1 and 13.34 µmol·m -2 ·s -1 , respectively. High selectivity was observed for the separation of V(V) and Mo(VI) from mixed solutions of Co (II), Ni (II), Mn (II), and Al (III). Additionally, the separation between Mo(VI) and V(V) was further improved by adjusting the acidity of the stripping solution. The V(V) selectivity for the resulting membrane was higher than that of commercial anion exchange membranes.
研究领域:
环境工程
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材料科学
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化学工程
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电化学
✓ 已验证
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Qing Wang,Lang Zhou,Jingzhe Li,Zheng Li,Tao Wang
Polymer hydrogel-based solid-state supercapacitors exhibit great potential applications in flexible devices. Nevertheless, the poor electrode–electrolyte interfacial properties restrict their advances. Herein, by taking the well-developed polyvinyl alcohol (PVA)/H2SO4 gel electrolyte and the graphene film electrode as the prototype, a very simple strategy is demonstrated to improve the interfacial affinity between the electrode and the hydrogel electrolyte by a preadsorbed highly hydrophilic polyzwitterion layer of poly(propylsulfonate dimethylammonium propylmethacrylamide) (PPDP) on the electrode surface. Electrochemical measurements confirm that the charge-transfer resistance on the interface is effectively reduced after modification with PPDP. Consequently, the obtained areal capacitance experiences a 3-fold increase compared to the unmodified ones. Results from electrochemical quartz crystal microbalance with dissipation demonstrate that more ions can be reversibly transferred on the modified interface during the change–discharge cycles, suggesting that the accessible surface area on the electrode is also increased. The hydrophilic PVA layer shows a similar function but with a much smaller efficiency. The strategy depicted here is highly universalizable and can be generalized to different electrode/electrolyte systems or other electrochemical energy storage devices.
研究领域:
材料科学
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电化学
·
储能设备
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jun Cong,Shao-hua Luo,Qi Sun,Xin Liu,Yi-Kai Wang,Sheng-xue Yan,Peng-wei Li
Efficient leaching and recovery of LiFePO 4 (LFP) in spent lithium-ion batteries (LIBs) is a key step to realize the recycling of lithium resources. Herein, H 2 SO 4 -H 2 O 2 is selected as the leaching agent to achieve selective leaching of lithium from spent LFP cathode materials, and the response surface method (RSM) serves to define the optimal leaching process. The experimental findings signify that when the concentration of H 2 SO 4 is 0.315 mol·L -1 , H 2 O 2 /Li molar ratio of 2.13, H 2 SO 4 /Li molar ratio of 0.62 (solid–liquid ratio of 96.87 g·L -1 ), leaching temperature of 62 °C and leaching time of 90 min, the leaching rate of Li + can reach as high as 95.23 %. Thermodynamic analysis, infrared spectroscopy and Mössbauer spectrum are used to clarify the reaction mechanism, that is, Fe 2+ in LiFePO 4 is oxidized to Fe 3+ by H 2 O 2 in situ to form FePO 4 , and Li + is released into the solution. Moreover, chemical precipitation method is used to efficiently recover the lithium resources in the form of lithium carbonate. By applying Box-Behnken design (BBD) and RSM to optimize the recovery technology to reach the global optimal solution to achieve the highest recovery rate of Li + in spent LFP. The experimental results show that under the optimal conditions of a Na 2 CO 3 /Li molar ratio of 0.6, a reaction temperature of 90 °C, and a C (Li + ) of 20.28 g·L -1 , the precipitation rate of Li + reaches 89.22 %. Moreover, the physical properties of the recovered Li 2 CO 3 are analyzed, and the content of Li 2 CO 3 in the recovered product is as high as 99.62 %. Additionally, the economic analysis and environmental impact analysis of the whole process of hydrometallurgical recovery of cathode materials are carried out by EverBatt 2023 model, which confirmed that hydrometallurgy is the extremely satisfactory method for recovering spent LFP cathode materials.
研究领域:
环境科学
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材料科学
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化学工程
✓ 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）