Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Jing Pan,Wenhao Li,Yongde Yan,Xuepeng Wang,Sihao Wang,Yun Xue,Fuqiu Ma,Kai Zhu,Wei Liu
Effective extraction of lanthanum (La) from spent nuclear fuel is crucial for promoting the sustainable use of nuclear energy. Liquid aluminum (Al) electrode shows significant advantages as active cathodes in the electrochemical extraction of lanthanides (Ln). However, the electrolytic reduction of La by liquid Al in NaCl-KCl melt has not received adequate attention and understanding. For this reason, the electrochemical recovery of La from NaCl-KCl melt using a liquid Al cathode has been investigated in this paper by a series of electrochemical methods. The results indicate that the reduction of La(III) on the W electrode occurs as a one-step process and the reaction is irreversible. The diffusion coefficient of La(III)/La was determined to be 6.70×10 -5 cm 2 s -1 . Meanwhile, the co-reduction process of La(III) and Al(III) on the W electrode was systematically investigated to explore the potential for forming binary intermetallic compounds. In addition, the exchange current density (0.025-0.030 A cm -2 ) at different temperatures was determined using linear polarization (LP), further elucidating the temperature dependence of the exchange current density. Finally, La was successfully extracted as an alloy by potentiostatic electrolysis on the Al electrode. This study provides promising insights for the extraction of La in NaCl-KCl melt on liquid Al electrode.
研究领域:
材料科学
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核能工程
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电化学
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产品关联
DOI
高影响因子
WATER ENVIRONMENT RESEARCH
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2025
·Vol. 97
·期 3
·e70057
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IF 1.9
Bin Zheng,Haixia Wu,Min Zhang,Shaohua Lin
As microplastic pollution in aquatic ecosystems continues to rise, research on wastewater treatment methods designed to address microplastics has gained significant attention. To reduce the power consumption of electrocoagulation, this study presents an approach using Ti–Al electrode under pulsed current conditions to address polystyrene (PS) microplastic contamination in wastewater. After selecting the appropriate electrode materials and shapes, we conducted a comprehensive investigation into the effects of various operational parameters—such as initial solution pH, electrolyte concentration, current density, pulse frequency, and pulse duty cycle—on PS removal efficiency. Under optimal conditions (electrode spacing of 1 cm, current density of 4 A·m −2 , pulse duty cycle of 40%, pulse frequency of 500 Hz, initial solution pH of 7, and electrolyte concentration of 0.05 mol·L −1 ), the removal efficiency of PS reached 93.24%, with a power consumption of 0.00977 kWh·mg −1 . Analysis of the resulting flocs revealed that free radicals generated during the electrocoagulation process disrupted the microplastic surfaces and facilitated the formation of Ti and Al flocs, which ultimately removed the microplastics through a combination of adsorption, electro-neutralization, and capture mechanisms. This study demonstrates the effectiveness of Ti electrode electrocoagulation for treating microplastic-laden wastewater and provides valuable insights for advancing microplastic treatment technologies. Practitioner Points Using pulse current electrocoagulation to remove polystyrene microplastics from wastewater. Titanium electrodes outperforms traditional electrodes ()in terms of efficiency and energy consumption. The mechanism for removing polystyrene microplastics using titanium electrodes in pulse current electrocoagulation was proposed. Titanium electrode electrocoagulation is effective in removing microplastics from wastewater and provides a reference for actual wastewater treatment. Graphical Titanium complexes such as Ti 4+ , Ti 3+ , Ti (OH) 2 + , and Ti (OH) 3 + generate during the electrocoagulation process, while alongside aluminum complexes like Al 3+ , Al (OH) 2+ , and Al (OH) 2 + generate. These positively charged species engage in charge neutralization with negatively charged microplastic particles. In addition, [Ti (OH) 4 ] n and [Al (OH) 3 ] n flocculants remove polystyrene particles via adsorption, net trapping, and rolling actions owing to their increased surface functional groups and larger specific surface area.
研究领域:
环境科学
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水处理工程
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产品关联
DOI
PubMed
高影响因子
International Journal of Minerals Metallurgy and Materials
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2025
·Vol. 32
·期 4
·892-901
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IF 7.2
Zhang Yongcheng,Yin Taiqi,Zhang Lei,Zhang Xiaochen,Bo Tao,Tan Xiaoli,Li Mei,Han Wei
Herein, the electrochemical behaviors of Sr on inert W electrode and reactive Zn/Al electrodes were systematically investigated in LiCl-KCl-SrCl 2 molten salts at 773 K using various electrochemical methods. The chemical reaction potentials of Li and Sr on reactive Zn/Al electrodes were determined. We observed that Sr could be extracted by decreasing the activity of the deposited metal Sr on the reactive electrode, although the standard reduction potential of Sr(II)/Sr was more negative than that of Li(I)/Li. The electrochemical extraction products of Sr on reactive Zn and Al electrodes were Zn 13 Sr and Al 4 Sr, respectively, with no codeposition of Li observed. Based on the density functional theory calculations, both Zn 13 Sr and Al 4 Sr were identified as stable intermetallic compounds with Zn-/Al-rich phases. In LiCl-KCl molten salt containing 3wt% SrCl 2 , the coulombic efficiency of Sr in the Zn electrode was ∼54%. The depolarization values for Sr on Zn and Al electrodes were 0.864 and 0.485 V, respectively, exhibiting a stronger chemical interaction between Zn and Sr than between Al and Sr. This study suggests that using reactive electrodes can facilitate extraction of Sr accumulated while electrorefining molten salts, thereby enabling the purification and reuse of the salt and decreasing the volume of the nuclear waste.
研究领域:
材料科学
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核能工程
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Changchao Dai,Dahong Chen,Jing Wu,Junfeng Liu,Shuang Shi,Jie Zhang,Yujie Feng
A novel integrated electrochemical oxidation-coagulation system combining boron-doped diamond anode and aluminum cathode was proposed for simultaneous removal of suspended solids and antibiotics. Experiments on simulated wastewater showed that the coupling of boron-doped diamond anode oxidation and aluminum cathode electrochemical coagulation could simultaneously and efficiently remove different forms of pollutants. The integrated system could achieve 67.4% turbidity and 95.48% tetracycline removal in simulated tetracycline wastewater, and 71.25% turbidity and 99.78% sulfamethoxazole removal in simulated sulfamethoxazole wastewater. The oxidation and coagulation functions of the integrated system were verified by in situ particle size analysis and electron spin resonance experiments. Compared with separate electrocoagulation and separate electrooxidation, the integrated system has the advantages of high space utilization, low energy consumption, and wide application range. It is promising to realize the simultaneous and efficient purification of suspended solids and antibiotics in wastewater at low cost.
研究领域:
环境科学
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废水处理
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Zhe Zhou,Keyuan Pan,Duoyi Zhu,Xinkai Qian,Qiye Wang,Shiqi Yan,Qian Xin,Xuemei Dong,Yueyue Wu,Zhengdong Liu,Juqing Liu
Tuning memory windows is vital for cross-bar memory architectures with low power and free cross-talk. Herein, we demonstrate a synergistic interface/electrode nanoengineering strategy to tune memory windows for low power operation and enhanced electrical readout in polymer devices; this approach is workable for most insulating or semiconducting polymeric mediums. Through customizing the resistivity of selectively reduced graphene oxide nanoelectrodes, an inherent sub μA current is recorded in the programming storage state. The nanocavity of the polymer interface can reduce the switching voltage due to local electric field enhancement, thus leading to tunable memory windows. By stacking a selector onto the memory, the vertical architecture features dynamic memory kinetics, enabling cross-talk-free readout by suppressing sneak leakage current paths.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2024
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IF 5.8
Mo Wei,Meng Fei Zhou,Bing Liu,Cheng Chao Hu,Yu Hua Cheng,Kai Xin Song
In this work, MgF 2 – x wt%LiF ( x = 0.5, 1.0, 2.5, 4.0, 5.0) ceramics have been prepared through the standard solid-state reaction method. X-ray diffraction patterns and scanning electron micrographs revealed the successful preparation of dense MgF 2 –LiF composite ceramics at an exceptionally low sintering temperature range of 525–600°C. The optimal microwave dielectric properties ( ε r = 5.09 ± 0.03, Qf = 100,733 ± 1646 GHz, τ f = −67.4 ± 3.3 ppm/°C) were achieved in MgF 2 –0.5 wt%LiF ceramics after sintering at 550 °C for 3 h. The present ceramics exhibited an outstanding combination of low- ε r , high Qf , and an ultra-low sintering temperature, surpassing the performance of most low-temperature-fired dielectric materials. Moreover, the theoretical Qf value, extrapolated from the fitting of infrared reflectivity spectra, was calculated to be 326,583 GHz, indicating significant potential for further Qf improvement. Additionally, the chemical compatibility with Al electrodes was confirmed, suggesting promising potential for ultra-low temperature co-fired ceramic (ULTCC) applications.
研究领域:
材料科学
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陶瓷
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介电材料
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微波工程
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
·
IF 6.364
Xiaomeng Li,Xian Xue,Qiyin Lin,Zeming Qi,Hong Wang,Yingying Zhao,Jing Guo
Temperature stable xLi 2 MoO 4 -(1-x)(LiBi) 0.5 MoO 4 (x = 0, 40, 50, 60, 70, 100 vol%) microwave dielectric ceramics obtained by cold sintering process (CSP) under a mild sintering condition (120 ℃/30 min/200 MPa) are introduced in this work. The XRD , SEM, and Raman analysis indicate the coexistence of Li 2 MoO 4 and (LiBi) 0.5 MoO 4 phases. Li 2 MoO 4 -(LiBi) 0.5 MoO 4 ceramics are compatible with Ag and Al electrode materials under cold sintering condition. The specimens exhibit high relative densities and good microwave dielectric properties (relative permittivities: 31.5–5.5; Q×f values: 1900 - 18,500 GHz; TCF values: from +144 ppm/℃ to −106 ppm/℃), in particular, TCF = +0.7 ppm/℃ can be obtained in the case of x = 50 vol%. The extrapolated microwave dielectric properties obtained by the fitted infrared reflectivity spectrum are close to the measured data, revealing that the dielectric responses of cold sintered Li 2 MoO 4 -(LiBi) 0.5 MoO 4 ceramics in the microwave range are dominated by the polar optical phonons.
研究领域:
材料科学
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陶瓷
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微波工程
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固体物理
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DOI
高影响因子
InfoMat
·
2024
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IF 22.7
Junjie Zou,Yanan Ma,Chenxu Liu,Yimei Xie,Xingyao Dai,Xinhui Li,Shuxuan Li,Shaohui Peng,Yang Yue,Shuo Wang,Ce-Wen Nan,Xin Zhang
The simultaneous detection of multiple stimuli, such as pressure and temperature, has long been a persistent challenge for developing electronic skin (e-skin) to emulate the functionality of human skin. Meanwhile, the demand for integrated power supply units is an additional pressing concern to achieve its lightweightness and flexibility. Herein, we propose a self-powered dual temperature–pressure (SPDM) sensor, which utilizes a compressible ionic gel electrolyte driven by the potential difference between MXene and Al electrodes. The SPDM sensor exhibits a rapid and timely response to changes in pressure-induced deformation, while exhibiting a slow and hysteretic response to temperature variations. These distinct response characteristics enable the differentiation of current signals generated by different stimuli through machine learning, resulting in an impressive accuracy rate of 99.1%. Furthermore, the developed SPDM sensor exhibits a wide pressure detection range of 0–800 kPa and a broad temperature detection range of 5–75°C, encompassing the environmental conditions encountered in daily human life. The dual-mode coupled strategy by machine learning provides an effective approach for temperature and pressure detection and discrimination, showcasing its potential applications in wearable electronics, intelligent robots, human–machine interactions, and so on.
研究领域:
材料科学
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电气工程
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机器人技术
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机器学习
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可穿戴技术
✓ 已验证
DOI
高影响因子
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