SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Yan Du,Jie Yang,Ye Liu,Jiacheng Zhou,Limei Cao,Ji Yang
Mercury is one of the important industrial resources, however, because the Minamata Convention restricts the exploitation of mercury resources, it is necessary to efficiently recycle mercury. In order to realize the resource utilization of mercury, the electrochemical method is used to remove the oxidized mercury in the liquid phase and collect the mercury resources. In this study, a titanium plate was used as a cathode to study the reduction of oxidized mercury. Through electrochemical characterization, it can be determined that the oxidized mercury is finally reduced to Hg 0 . The reduction efficiency of Hg 2+ can reach 90% after 24 h of electrolysis under certain conditions. The effects of reaction time, current density, stirring rate, electrode spacing and initial Hg 2+ concentration on the reduction efficiency were also studied. The optimal conditions can be obtained through research: current density 10 mA/cm 2 , no stirring, electrode spacing 20 mm, and electrolyte concentration 10 mg/L HgSO 4 -10% H 2 SO 4 50 mL. The kinetic analysis shows that this reaction accords with the first-order reaction kinetics.
研究领域:
环境科学
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电化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
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IF 3.131
Mingcheng Li,Jingyu Zhao,Yaru Li,Meichen Li,Yongchuan Wu,Chun Wang,Han Jiao,Ping Na
Cesium ions (Cs + ) were absorbed using electrochemically switched ion exchange (ESIX) method based on Na 2 Ti 3 O 7 nanotubes , which were synthesized on surface of foam titanium plate by one-step hydrothermal method (TNT-F). SEM, TEM, XRD , Raman and XPS were used to characterize the TNT-F. During the adsorption process , the effects of adsorption potential, initial Cs + concentration, pH value and competing ions were investigated. It was found that the application of electric field force can effectively promote the adsorption process. Furthermore, pH value and competitive ions have a slight effect on the adsorption process. The desorption ability of TNT-F was also considered. The experimental results show that the desorption ratio also can be greatly improved by applying potential. In addition, TNT-F has a good reusability and reproducibility, it also has good adsorption performance under high concentration of competitive ions. In a word, the high performance TNT-F electrode which was easy to obtain in low cost is expected to become a promising material for Cs + collection.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
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IF 4.798
Mao Zhou,Ruizhuo Ouyang,Yuhao Li,Yuqing Miao
3D microspheres from the in situ synthesis, growth and organization of Ni-Mo-S nanoparticles (NPs) on porous Ti plate were obtained through a typical hydrothermal method . The Ni-Mo-S/Ti electrode exhibited excellent electrocatalytic performance for hydrogen evolution reaction (HER) in strong acid electrolyte. HER occurs at the relatively low onset potential of −4 mV with high current of 10 mA/cm 2 at low overpotential of 30 mV in 0.5 M H 2 SO 4 . Furthermore, the Ni-Mo-S/Ti exhibited excellent electrocatalytic stability over an extended period of 60000 s without obvious current decrease observed. The multinary composition , 3D microsphere-like structure from nanoparticles, porous supporting substrate, the good conductivity of Ti and good electron transfer between electrode and catalysts, all of them are combined to contribute to the high HER electrocatalytic activity of the Ni-Mo-S/Ti. The good stability comes from the stability of catalysts and Ti themselves, and the tight contact between catalysts and supporting electrode.
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
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2015
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IF 3.313
Zonghua Pu,Chun Tang,Yonglan Luo
In this paper, we demonstrate the preparation of ferric phosphide nanoparticles film supported on titanium plate (FeP/Ti) through low-temperature phosphidation of electrodeposited ferric hydroxide nanoparticles film on Ti plate. When directly used as a hydrogen evolution cathode in acidic media, the FeP/Ti shows high catalytic performance and durability with nearly 100% Faradaic efficiency. It needs overpotentials of 116 and 191 mV to afford current densities of 10 and 100 mA cm −2 , respectively, and the catalytic activity is maintained for at least 12 h at an overpotential of 150 mV. This electrode also performs well in neutral solutions.
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 Materials Chemistry B
·
2020
·Vol. 9
·期 4
·1096-1106
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IF 5.344
Min He,Xinhui Gao,Yadi Fan,Li Xie,Mo Yang,Weidong Tian
Instead of directly stimulating osteogenesis, endowing an implant surface with a favourable osteoimmunomodulatory (OIM) function has emerged as a new effective strategy to enhance osteointegration. Though metal-phenolic coatings have demonstrated to possess an immunomodulatory function, their potential application in manipulating an osteoimmune response has not been well explored. Herein, in order to develop a simple, rapid and universal coating method to impart excellent OIM to hard tissue implants, tannic acid (TA) and Mg2+ were selected to form a coating on Ti plate based on metal-phenolic chemistry. Besides its virtues of simplicity, ultrafastness, low-cost, and versatility, another merit for the coating method is that it can easily combine the unique functions of metal ions and phenolic ligands. The chelated Mg2+ can not only activate macrophage polarization towards the anti-inflammatory phenotype but also directly stimulate the osteogenic differentiation of bone marrow-derived stem cells (BMSCs). TA motifs rendered the coating with an excellent reactive oxygen species (ROS) scavenging capacity. TA and Mg2+ showed synergistic effects on regulating macrophage biological behaviour, suppressing its polarization towards the M1 phenotype, and promoting its polarization towards the M2 phenotype. In vivo histological analysis also demonstrated that the TA/Mg2+ coating could effectively inhibit the host response. Finally, the formed osteoimmune environment obviously enhanced the osteogenic differentiation of BMSCs. The above results demonstrated that the designed TA/Mg2+ coating not only possessed the function of directly stimulating osteogenesis but also the function of manipulating OIM to a desired one. Hence, it has great potential to be applied on advanced hard tissue implants to enhance osteointegration.
研究领域:
生物材料
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生物医学工程
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免疫学
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骨科
✓ 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）