{"title":"不同离子对模拟海水中 CaCO3 鳞片脉冲电沉积的影响","authors":"Zhihao Chen*, Xiao Wang, Zhenyu Li, Hanjie Ying and Wenzhong Yang*, ","doi":"10.1021/acs.langmuir.4c01596","DOIUrl":null,"url":null,"abstract":"<p >In the circulating water system of coastal power plants, various kinds of ions have a great influence on the formation and growth of CaCO<sub>3</sub> scales. This paper focuses on investigating the influence of existing ions on the pulse electrodeposition behaviors of CaCO<sub>3</sub> scales. Different concentrations of ions, such as Fe<sup>3+</sup>, Mg<sup>2+</sup>, PO<sub>4</sub><sup>3–</sup> and SiO<sub>3</sub><sup>2–</sup>, are introduced to simulate the actual seawater environment, and their influence on the CaCO<sub>3</sub> scale deposition behaviors is assessed by linear sweep voltammetry, chronoamperometry, and electrochemical impedance spectroscopy tests. The surface coverage of the CaCO<sub>3</sub> scale layer is evaluated through the residual current density and polarization resistance values, while the crystal structure and surface compactness of the layer are confirmed by the scanning electron microscope and X-ray diffractometer tests. Results indicate that high concentrations of Mg<sup>2+</sup>, Fe<sup>3+</sup>, and PO<sub>4</sub><sup>3–</sup> ions have the most significant inhibitory effect on the pulse electrodeposition of CaCO<sub>3</sub> scales, among which the inhibition effect of Mg<sup>2+</sup> ions is mainly reflected in the change of crystal morphology of CaCO<sub>3</sub>, that is, the crystallization growth process is inhibited. The inhibition effect of PO<sub>4</sub><sup>3–</sup> ions is mainly reflected in the gradually reduced coverage and density of CaCO<sub>3</sub> crystals on the electrode surface, suggesting that the crystallization nucleation process is inhibited, while Fe<sup>3+</sup> ions have a certain inhibition effect on both the crystallization nucleation and growth processes. Furthermore, lower concentrations of SiO<sub>3</sub><sup>2–</sup> ions also display a significant inhibition effect on the crystallization nucleation and growth process, and the inhibition effect weakens with increased concentration. This study provides a theoretical basis for exploring the removal of ions in the industrial water softening field.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.7000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Different Ions on Pulse Electrodeposition of CaCO3 Scales in the Simulated Seawater\",\"authors\":\"Zhihao Chen*, Xiao Wang, Zhenyu Li, Hanjie Ying and Wenzhong Yang*, \",\"doi\":\"10.1021/acs.langmuir.4c01596\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >In the circulating water system of coastal power plants, various kinds of ions have a great influence on the formation and growth of CaCO<sub>3</sub> scales. This paper focuses on investigating the influence of existing ions on the pulse electrodeposition behaviors of CaCO<sub>3</sub> scales. Different concentrations of ions, such as Fe<sup>3+</sup>, Mg<sup>2+</sup>, PO<sub>4</sub><sup>3–</sup> and SiO<sub>3</sub><sup>2–</sup>, are introduced to simulate the actual seawater environment, and their influence on the CaCO<sub>3</sub> scale deposition behaviors is assessed by linear sweep voltammetry, chronoamperometry, and electrochemical impedance spectroscopy tests. The surface coverage of the CaCO<sub>3</sub> scale layer is evaluated through the residual current density and polarization resistance values, while the crystal structure and surface compactness of the layer are confirmed by the scanning electron microscope and X-ray diffractometer tests. Results indicate that high concentrations of Mg<sup>2+</sup>, Fe<sup>3+</sup>, and PO<sub>4</sub><sup>3–</sup> ions have the most significant inhibitory effect on the pulse electrodeposition of CaCO<sub>3</sub> scales, among which the inhibition effect of Mg<sup>2+</sup> ions is mainly reflected in the change of crystal morphology of CaCO<sub>3</sub>, that is, the crystallization growth process is inhibited. The inhibition effect of PO<sub>4</sub><sup>3–</sup> ions is mainly reflected in the gradually reduced coverage and density of CaCO<sub>3</sub> crystals on the electrode surface, suggesting that the crystallization nucleation process is inhibited, while Fe<sup>3+</sup> ions have a certain inhibition effect on both the crystallization nucleation and growth processes. Furthermore, lower concentrations of SiO<sub>3</sub><sup>2–</sup> ions also display a significant inhibition effect on the crystallization nucleation and growth process, and the inhibition effect weakens with increased concentration. This study provides a theoretical basis for exploring the removal of ions in the industrial water softening field.</p>\",\"PeriodicalId\":50,\"journal\":{\"name\":\"Langmuir\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Langmuir\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.langmuir.4c01596\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Langmuir","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.langmuir.4c01596","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of Different Ions on Pulse Electrodeposition of CaCO3 Scales in the Simulated Seawater
In the circulating water system of coastal power plants, various kinds of ions have a great influence on the formation and growth of CaCO3 scales. This paper focuses on investigating the influence of existing ions on the pulse electrodeposition behaviors of CaCO3 scales. Different concentrations of ions, such as Fe3+, Mg2+, PO43– and SiO32–, are introduced to simulate the actual seawater environment, and their influence on the CaCO3 scale deposition behaviors is assessed by linear sweep voltammetry, chronoamperometry, and electrochemical impedance spectroscopy tests. The surface coverage of the CaCO3 scale layer is evaluated through the residual current density and polarization resistance values, while the crystal structure and surface compactness of the layer are confirmed by the scanning electron microscope and X-ray diffractometer tests. Results indicate that high concentrations of Mg2+, Fe3+, and PO43– ions have the most significant inhibitory effect on the pulse electrodeposition of CaCO3 scales, among which the inhibition effect of Mg2+ ions is mainly reflected in the change of crystal morphology of CaCO3, that is, the crystallization growth process is inhibited. The inhibition effect of PO43– ions is mainly reflected in the gradually reduced coverage and density of CaCO3 crystals on the electrode surface, suggesting that the crystallization nucleation process is inhibited, while Fe3+ ions have a certain inhibition effect on both the crystallization nucleation and growth processes. Furthermore, lower concentrations of SiO32– ions also display a significant inhibition effect on the crystallization nucleation and growth process, and the inhibition effect weakens with increased concentration. This study provides a theoretical basis for exploring the removal of ions in the industrial water softening field.
期刊介绍:
Langmuir is an interdisciplinary journal publishing articles in the following subject categories:
Colloids: surfactants and self-assembly, dispersions, emulsions, foams
Interfaces: adsorption, reactions, films, forces
Biological Interfaces: biocolloids, biomolecular and biomimetic materials
Materials: nano- and mesostructured materials, polymers, gels, liquid crystals
Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry
Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals
However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do?
Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*.
This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).