JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Zhang Xin,Xiao Yuying,Li Wenlong,Gong Ming,Huang Ziqin,Wang Ji,Zeng Deqian,Chen Lifeng,Wei Yuezhou
To extract Lu from LiCl–KCl molten salt, the electrochemical behavior of Lu(III) were explored by different electrochemical methods. Cyclic voltammetry (CV), reverse chronopotentiometry (RCP) and square-wave voltammetry (SWV) demonstrated that Lu metal was formed by one-step three-electron transfer when Lu(III) was reduced on W electrode, and the electrode reaction is reversible controlled by diffusion. The diffusion coefficient of Lu(III) in molten salt was calculated to be 1.68 × 10 –5 cm 2 s −1 by SWV. Only BiLu was formed when the co-deposition of Lu(III) and Bi(III) was conducted at 773 K, which was confirmed by anode chronopotentiometry. The influence of temperature on the types of Bi-Lu intermetallic compounds was also explored. In addition, the thermodynamic parameters of BiLu were estimated by open circuit chronopotentiometry. The extraction efficiency of Lu(III) reach up to 89.54% when the constant-current electrolysis continued for 12 h based on the result of ICP-OES, and the product was characterized by SEM–EDS.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Hao Zhang,Jingyi Liang,Zhikang Li,Feng Xiao,Yanhui Wu,Chaojie Zhang
The treatment of fluorine-containing wastewater has very important significance for environmental protection. Forward osmosis (FO), using osmotic pressure gradient as driving force, can remove ion from aqueous solutions effectively. The key to improve the separation efficiency of FO is to prepare the membrane of excellent performance. In this work, chitosan (CS)/tannic acid (TA) interlayer was constructed by the strategy of polyphenol/polyamine liquid phase co-deposition, then three-layer FO membranes with more uniform surface and higher hydrophilicity were obtained by interfacial polymerization on the interlayer. And the effects of co-deposition time and mass ratio of CS/TA on the performance of FO treating simulated fluorine-containing wastewater were also investigated. Experimental results showed that the optimal co-deposition time was 60 min and the mass ratio of CS/TA was 0.5. The water flux of the TFC-CS/TA 0.5 – 60 membrane (TFC means thin film composite, 0.5 is the mass ratio of CS/TA, 60 means the co-deposition time is 60 min) reached 22.3 LMH and the fluorine rejection was 99.93%, when it was applied to treat model waste water containing fluoride of 300 mg/L. In FO test on fluorine-containing wastewater from a semiconductor factory, compared with commercial Aquaporin Inside TM FO membrane, the water flux of TFC-CS/TA 0.5 – 60 membrane was 49.3% higher than that of the commercial membrane. This study provides a new idea for the preparation of high-efficiency FO membranes and has a good prospect for the treatment of industrial fluorine-containing wastewater.
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
Nuclear Materials and Energy
·
2021
·
IF 2.32
S. Krat,Yu. Gasparyan,Ya. Vasina,A. Prishvitsyn,G.De Temmerman,A. Pisarev
Available literature data for beryllium content in D-Be co-deposited layers was modeled using newly developed model. It was shown that the model adequately describes the experimental results. An empirical scaling for the available trap concentrations as a function of deuteron energy was introduced in order to improve the agreement between the experimental data and model predictions. The limited recombination rate describes the co-deposition better than the unlimited one. Assuming two types of traps in the film with detrapping energies of 0.8–0.9 and 1.2–1.3 eV and trap concentrations of 10 at. % and 1 at. %, respectively, and the deuterium implantation energy of 15.6 eV, the average relative deviation between experimental and predicted D/Be values of 1.9 was observed, which is better than the empirical D/Be scalings.
研究领域:
核物理学
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材料科学
✓ 已验证
DOI
高影响因子
Membranes
·
2022
·Vol. 12
·期 11
·1151
·
IF 4.562
Jiawen Wu,Zhiwen Li,Qingfeng Zhou,Mercy Chigwidi,Yang Jiao,Yanchao Xu,Hongjun Lin
The co-deposition between polyphenols and amines has been demonstrated in order to prepare positively charged nanofiltration (NF) membranes for multivalent cation rejection in recent years; however, the low reactivities of the involved polyphenols usually cause a long co-deposition time and unsatisfactory rejection. Herein, a novel plant polyphenol (PG) was co-deposited with tetraethylenepentamine (TEPA) in a much shorter time period to prepare positively charged NF with high multivalent cation rejection membranes. The performance of the co-deposition membranes can be easily controlled by adjusting the mass ratio of PG and TEPA, reaction time, and pH value of the buffer solution. The optimal membrane, prepared under a polyphenol and polyamine mass ratio of 1:1, coating time of 2 h, and pH value of 8.0, shows a decent pure water permeability of 8.43 L m−2h−1bar−1while maintaining a superior 96.24% MgCl2rejection. More importantly, the universality of this method was corroborated by employing other amines with different molecular weights in the co-deposition. This work provides new insights for the preparation of high-performance positively charged NF membranes.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Xiangxi Wang,Lei Li,Liangge Xu,Zhao Wang,Zhuoyan Wu,Zhiliang Liu,Piaoping Yangs
The oxygen evolution reaction (OER) is vital for water electrolysis which demands low-cost, durable, and efficient electrocatalysts . Recently, 3d transition metal based OER catalysts become very attractive due to their abundant earth reserve and low price. However, these transition metals still suffer from severe dissolution problem and inappropriate adsorption ability to the intermediate species during OER catalysis. Herein, we prepared Mn and Co co-decorated Ni composites nanosheets (MnCo@NiS) via a facile step-by-step electrodeposition way, which showed near-optimal adsorption energy to oxygenated intermediates and much better electrocatalytic OER performance than single metal decorated NiS or non-decorated one, especially requiring a low OER overpotential of only 286 mV at 10 mA cm −2 in an alkaline electrolyte and Tafel slope of 31.5 mV dec −1 . The results indicated Mn and Co co-decoration is very efficient way to change the electron distribution and optimize the adsorption energy of NiS, leading to the high OER performance. In particular, the MnCo@NiS electrode demonstrates a highly impressive stability with not only much less cation dissolution but negligible degradation after 20 h durability test at 50 mA cm −2 .
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
Nanomaterials
·
2021
·Vol. 12
·期 1
·41
·
IF 5.076
Tong Yu,Chenpu Wu,Zhongyan Chen,Mingen Zhang,Zhuan Hong,Honghui Guo,Wenyao Shao,Quanling Xie
In this study, a novel photocatalytic self-cleaning nanofiltration (NF) membrane was fabricated by constructing aspartic acid-functionalized graphene quantum dots (AGQDs) into the polydopamine/polyethyleneimine (PDA/PEI) selective layer via the co-deposition method. The chemical composition, microstructure, and hydrophilicity of the prepared membranes were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), attenuated total reflection (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and water contact angle (WCA). Meanwhile, the effects of PEI molecular weight and AGQDs concentration on NF membrane structures and separation performance were systematically investigated. The photocatalytic self-cleaning performance of the PDA/PEI/AGQDs membrane was evaluated in terms of flux recovery rate. For constructing high-performance NF membranes, it is found that the optimal molecular weight of PEI is 10,000 Da, and the optimal concentration of AGQDs is 2000 ppm. The introduction of hydrophilic AGQDs formed a more hydrophilic and dense selective layer during the co-deposition process. Compared with the PDA/PEI membrane, the engineered PDA/PEI/AGQDs NF membrane has enhanced water flux (55.5 LMH·bar−1) and higher rejection (99.7 ± 0.3% for MB). In addition, the PDA/PEI/AGQDs membrane exhibits better photocatalytic self-cleaning performance over the PDA/PEI membrane (83% vs. 69%). Therefore, this study provides a facile approach to construct a self-cleaning NF membrane.Keywords:nanofiltration;graphene quantum dots;L-aspartic acid;self-cleaning;co-deposition
研究领域:
材料科学
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环境工程
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Membranes
·
2023
·Vol. 13
·期 5
·530
·
IF 4.2
Lixin Xie,Yaqian Liu,Shichang Xu,Wen Zhang
The surface modification of reverse osmosis (RO) membranes to improve their anti-biofouling properties is gaining increased attention. Here, we modified the polyamide brackish water reverse osmosis (BWRO) membrane via the biomimetic co-deposition of catechol (CA)/tetraethylenepentamine (TEPA) and in situ growth of Ag nanoparticles. Ag ions were reduced into Ag nanoparticles (AgNPs) without extraneous reducing agents. The hydrophilic property of the membrane was improved, and the zeta potential was also increased after the deposition of poly (catechol/polyamine) and AgNPs. Compared with the original RO membrane, the optimized PCPA3-Ag10 membrane showed a slight reduction in water flux, and the salt rejection declined, but enhanced anti-adhesion and anti-bacterial activities were observed. TheFDRtof the PCPA3-Ag10 membranes during the filtration of BSA, SA and DTAB solution were 5.63 ± 0.09%, 18.34 ± 0.33% and 34.12 ± 0.15%, respectively, much better than those of the original membrane. Moreover, the PCPA3-Ag10 membrane exhibited a 100% reduction in the number of viable bacteria (B. subtilis and E. coli) inoculated on the membrane. The stability of the AgNPs was also high enough, and these results verify the effectiveness of poly (catechol/polyamine) and the AgNP-based modification strategy for the control of fouling.Keywords:RO membrane;anti-fouling;co-deposition;poly (catechol/polyamine);silver nanoparticles
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOM
·
2021
·Vol. 73
·期 12
·3727-3733
·
IF 2.474
Yang Jiaxin,Tao Wenju,Chen Liyu,He Jingui,Zhang Yifan,Yu Jiangyu,Wang Zhaowen
The preparation of high-purity and high-value alloys is of great significance to industrial production. The purpose of this study is to explore the process of producing aluminum-silicon (Al-Si) alloy by the electrochemical Al-Si eutectoid method. The electrochemical behavior of aluminum and silicon on tungsten electrode was studied by cyclic voltammetry and galvanostatic chronopotentiometry. The effect of SiO 2 addition on the eutectoid behavior of Al and Si was studied. The results show that the precipitation potential of Al is about –1.35 V (versus Pt), and the initial precipitation potential of Si is about –0.8 V (versus Pt). The precipitation process of silicon includes two reduction stages. In addition, the precipitation of Si is a quasireversible reaction controlled by diffusion process. Finally, Al-Si alloy was obtained by potentiostatic electrodeposition at –1.8 V potential, indicating that Al and Si would codeposit at this potential.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Mochou Liu,Huixia Xu,Limei Liu,Xia Han,Honglai Liu
The persistent challenge of treating oily wastewater from industrial effluents and environmental spills demands advanced separation materials with sustainable antifouling capabilities. While superwetting interfaces show promise in oil/water separation, the long-term stability and fabrication complexity of functional coatings remain critical limitations. This study presents a systematic comparison of two surface engineering approaches for stainless-steel meshes (SSMs): (1) terminal anchoring of dopamine-end-functionalized amphiphilic copolymers versus (2) self-assembly mediated codeposition of polymer–dopamine complexes. Through controlled integration of zwitterionic moieties and hydrophobic segments, both strategies create hierarchically structured surfaces combining strong hydrophilicity with oil-repellent characteristics. The results reveal that the codeposited PDA–PMB30 coating achieves superior hydration capacity through three-dimensional polymer networking, while the terminally anchored PMBD70 system demonstrates enhanced hydration stability via covalent grafting density optimization. In practical testing, both modified SSMs maintain exceptional separation efficiencies (96% for PDA–PMB30, 93% for PMBD70) through 20 operational cycles, outperforming all other coating systems in durability metrics. The synergistic combination of bioinspired adhesion mechanisms and amphiphilic balance endows these meshes with unique antifouling resilience, showing >96% separation efficiencies and stable performance in high salinity (1 M NaCl), strong acidity (pH = 1), and strong alkalinity (pH = 14) environments. This work establishes fundamental structure–property relationships between surface grafting architectures and separation performance, providing actionable insights for designing robust oil/water separation systems for petrochemical wastewater treatment and marine spill remediation.
研究领域:
材料科学
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环境科学
·
高分子化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Xinkuai He,Genfa Zeng,Jingjing Yang,Yiren Li,Luye Wu
The electrochemical reduction behavior in the preparation of Ni–Mo alloy catalysts using benzyl alcohol (BA) and ethylene glycol (EG) mixed solvents is studied via CV. These studies indicate that the mechanism of Ni–Mo co-deposition corresponds to a typical induced co-deposition mechanism, in which Ni 2+ can facilitate the Mo 6+ reduction while Mo 6+ can suppress the Ni 2+ reduction in the mixed solvents. SEM micrographs reveal that these Ni–Mo alloy catalysts exhibit dense structures composed of 'hillock'-shaped granules, and the size of these granules can be tuned by adjusting the Mo content. XRD pattern reveals that the Ni–Mo catalysts present a nanocrystalline structure with an average crystallite size of 48.7 nm. The experimental data demonstrate that increasing the Mo content in the Ni–Mo alloy catalyst from 5.36 to 11.62 wt% significantly enhances the HER performance. Particularly, the catalyst containing 11.62 wt% Mo demonstrates superior catalytic efficiency in 1 M KOH, requiring an overpotential of merely 58 mV to reach a current density of 10 mA cm −2 .
研究领域:
电化学
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Yan Chao Xu,Zhen Xing Wang,Xi Quan Cheng,You Chang Xiao,Lu Shao
Herein, a novel positively charged nanofiltration (NF) membrane has been facilely fabricated via a highly efficient one-step mussel-substance-simulated co-deposition of low-cost catechol and branched polyetheylenimine (PEI) onto substrates. The co-deposition behaviour, physicochemical properties and separation performances of resultant membranes can be readily tailored by varying PEI molecular weight. In particular, the catechol/PEI600 co-deposited NF membrane shows good removals toward dyes, common salts and heavy metal ions for textile wastewater treatment. Our membranes exhibit high removal efficiency toward cationic dye and metal ions due to the Donnon effect. In addition, EtOH activation process can greatly enhance the membrane permeance with a factor of 1.8–2.4 without compromising rejection. Especially, the novel membranes show stable long-term separation performance toward MgCl 2 removal, and the dye-fouled co-deposited membranes can be facilely regenerated and reused with a simple static immersion operation. The co-deposited membrane can perform well in alcohols solvents, indicating its excellent performance for practically environmentally-friendly usages. The facile strategy disclosed in our study can provide new opportunities to not only nanofiltration membrane modification but also the surface engineering of vast kinds of materials towards energy and environmental applications.
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
RSC Advances
·
2023
·Vol. 13
·期 13
·8901-8914
·
IF 3.9
Xinkuai He,Zhousi Hu,Qingtian Zou,Jingjing Yang,Ruqing Guo,Luye Wu
The preparation of active, stable and low-cost non-noble electrocatalysts for the hydrogen evolution reaction (HER) using the electrochemical water splitting process is crucial for the promotion of sustainable energy. In this study, Co–Ni alloys with various Co contents are prepared using a galvanostatic method and the co-deposition behavior of Co2+ and Ni2+ in ethylene glycol (EG) is reported. These results indicate that the presence of additional Ni2+ species can accelerate the Co–Ni co-deposition process and Co2+ species in the system can inhibit the reduction of Ni2+. Moreover, the two effects are improved with an increase in Ni2+ or Co2+ species concentration in the EG system, respectively. Chronoamperometry records show that the Co–Ni electro-crystallization mechanism is one of 3D instantaneous nucleation and growth. Moreover, the Co–Ni alloy with 59.46 wt% Co exhibits high electrocatalytic activity for HER with an overpotential of 133 mV at 10 mA cm−2 in 1 M KOH due to a high value of electrochemical active surface area (ECSA) (955.0 cm2). Therefore, the Co–Ni alloy electrocatalyst obtained from the EG system could be a promising candidate for practical hydrogen production.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）