Synthesis, characterization and mechanism of porous spherical nesquehonite by CO2 biomimetic mineralization

Wang, Yulian; Liu, Jiayi; Shi, Tianjiao; Wang, Qihao; Zhang, Jun; Zhu, Yibin; Li, Chuang; Yuan, Zhigang; Ye, Jin; Yin, Wanzhong

doi:10.1016/j.apt.2022.103856

Cited by 6 publications

(5 citation statements)

References 75 publications

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“…Then, the regular octahedral growth units of [MgO 6 ] were formed by MgOH + and CO 3 2– ions. The growth units entered from the surfaces into the micelles and formed nanosheets via synergism and cooperation . Besides, the nanosheets took the micelles as the templates to form spherical structure through aggregation and superposition.…”

Section: Resultsmentioning

confidence: 99%

“…The growth units entered from the surfaces into the micelles and formed nanosheets via synergism and cooperation. 32 Besides, the nanosheets took the micelles as the templates to form spherical structure through aggregation and superposition. Moreover, the nanosheets could only grow along two-dimensional directions to form porous spherical MgCO 3 ·3H 2 O due to the inhibition of SDS micelle on the crystal plane.…”

Section: Resultsmentioning

confidence: 99%

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Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate

Cheng

Wang

et al. 2023

ACS Omega

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Huge amounts of MgCl 2 •6H 2 O are produced annually as a byproduct or waste from KCl production in the Qinghai province of China. An ecological and economic way to solve this problem is transforming the abandoned MgCl 2 •6H 2 O to valuable MgCO 3 •3H 2 O whiskers. The formation and phase transformation of MgCO 3 •3H 2 O whiskers were studied in the crystallization process, in which MgCl 2 and NH 4 HCO 3 were precipitated in the presence of sodium dodecyl sulfate (SDS) at 50 °C. Results showed that porous spherical MgCO 3 •3H 2 O, MgCO 3 •3H 2 O whiskers, and flocculent rod-like 4MgCO 3 •Mg(OH) 2 •4H 2 O were formed with decreasing concentration of SDS as the crystallization proceeded. When the concentration of SDS was lower than the critical micellar concentration (6.5 mmol•L −1 ) at 60 min, SDS was beneficial for the growth in the [010] direction to form onedimensional MgCO 3 •3H 2 O whiskers with a high aspect ratio, good uniformity, and a smooth surface (length, 60−70 μm; aspect ratio, 110−140).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate

Cheng

Wang

et al. 2023

ACS Omega

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“…54 The long chains are intertwined in the solution, which forms cross-linked spatial network structures through van der Waals forces or hydrogen bonding. [54][55][56][57][58] The network structures can restrict the metal cations while the functional hydroxyl groups can bind the metal cations, and both affect their crystallization. [55][56][57][58] Thus, it is speculated that the dextran bonded free cerium ions in the solution combined with oxygen in water, forming nano cerium oxide liquid-like precursors, 32,59 which can penetrate the gaps of the collagen fibrils and subsequently undergo transformation into cerium oxide crystals and deposited within the fibrils.…”

Section: Discussionmentioning

confidence: 99%

“…[54][55][56][57][58] The network structures can restrict the metal cations while the functional hydroxyl groups can bind the metal cations, and both affect their crystallization. [55][56][57][58] Thus, it is speculated that the dextran bonded free cerium ions in the solution combined with oxygen in water, forming nano cerium oxide liquid-like precursors, 32,59 which can penetrate the gaps of the collagen fibrils and subsequently undergo transformation into cerium oxide crystals and deposited within the fibrils. 60 The results from infrared spectroscopy unequivocally validated the substantial presence of cerium oxide within both the mineralized collagen film and the remineralized dentin.…”

Section: Discussionmentioning

confidence: 99%

Remineralization of Dentin with Cerium Oxide and Its Potential Use for Root Canal Disinfection

Wang,

Zhang,

Zheng

et al. 2023

IJN

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Objective This study was to investigate a novel antibacterial biomimetic mineralization strategy for exploring its potential application for root canal disinfection when stabilized cerium oxide was used. Material and Methods A biomimetic mineralization solution (BMS) consisting of cerium nitrate and dextran was prepared. Single-layer collagen fibrils, collagen membranes, demineralized dentin, and root canal system were treated with the BMS for mineralization. The mineralized samples underwent comprehensive characterization using various techniques, including transmission electron microscopy (TEM), high-resolution TEM (HRTEM), Fourier transform infrared spectroscopy (FTIR), scanning transmission electron microscopy (STEM), selected-area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and micro-CT. Additionally, the antimicrobial properties of the BMS and the remineralized dentin were also analyzed with broth microdilution method, live/dead staining, and SEM. Results Cerium ions in the BMS underwent a transformation into cerium oxide nanoparticles, which were deposited in the inter- and intra-fibrillar collagen spaces through a meticulous bottom-up process. XPS analysis disclosed the presence of both Ce (III) and Ce (IV) of the generated cerium oxides. A comprehensive examination utilizing SEM and micro-CT identified the presence of cerium oxide nanoparticles deposited within the dentinal tubules and lateral canals of the root canal system. The BMS and remineralized dentin exhibited substantial antibacterial efficacy against E. faecalis, as substantiated by assessments involving the broth dilution method and live/dead staining technique. The SEM findings revealed the cell morphological changes of deceased E. faecalis. Conclusion This study successfully demonstrated antibacterial biomimetic mineralization as well as sealing dentinal tubules and lateral branches of root canals using cerium nitrate and dextran. This novel biomimetic mineralization could be used as an alternative strategy for root canal disinfection.

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“…An examination of these works revealed that 3 papers (10%) utilized experimental methodology, 6 papers (21%) discussed the reported results and compared them with their findings, and 20 papers (69%) cited 1 or more of Dr. Santos’s papers in the introduction section of their papers to explain a concept (Table S1 in the Supporting Information). More details and discussion about these relevant studies ,,− are available in the Supporting Information file alongside other analyses on citation usage, publication sources, country, institutional collaboration analyses, and paper classification according to scientific disciplines and the United Nations Sustainable Development Goals. A scientometric analysis is a powerful tool for researchers to gauge the impact of their work and to connect with the broader scientific community beyond what other networking activities, such as conferences and webinars, allow.…”

Section: Scientometric Analysismentioning

confidence: 99%

Multiscale Process Intensification of Waste Valorization Reactions

Santos,

Zhang,

Bakhshoodeh

2023

Acc. Chem. Res.

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Conspectus The central theme of this Account is the development of intensified and sustainable chemical processes for the sequestration of CO2 in synergism with the utilization of wastes of industrial, urban, and agricultural origins. A challenge when working with solid waste–fluid reactions is that mass transfer limitations across solid–liquid, solid–gas, and gas–liquid interfaces and unfavorable thermodynamics lead to slow reaction rates, incomplete reaction conversions, high energy expenditure and processing costs, and inadequate product properties. The traditional macroscale approaches to overcoming slurry reaction limitations can be effective; however, they come at a cost to the environment. In the treatment or valorization of low-grade and waste resources, such conventional approaches are often unfeasible on an industrial scale. Sustainable solutions are thus needed. In the last six years, we have been exploring and developing approaches to overcoming reaction rate limitations of slurry reactions of environmental relevance by concurrently applying process intensification strategies and multiscale engineering approaches. The scientific approach has relied on laboratory-scale experiments to test and refine the devised multiscale process intensification strategies, with thermodynamic and computational modeling work supporting the experimental work and with advanced characterization techniques being used to elucidate reaction and transport mechanisms and aid the development of nanoscale reaction models and micro- and macroscale process models. The research streams, associated with the four key references, discussed next are (a) brine carbonation; (b) mineral carbonation and enhanced weathering; (c) process intensification and integration; and (d) characterization techniques. Within the four research streams, a number of mineral carbonation processes have been investigated and can be classified as (i) ambient weathering and carbonation; (ii) gas-(wet) solid accelerated carbonation; (iii) aqueous accelerated carbonation; (iv) supercritical accelerated carbonation; and (v) CO2 mineralization from brine. In some cases, the research was aimed at producing valuable products with reduced environmental risk or a reduced carbon footprint, such as an organomineral fertilizer and zeolites. In other cases, the aim was to assess the reactivity of minerals to match the right feedstock with the right carbonation process, in view of maximizing net carbon sequestration. There were also cases where the carbonation process was reimagined by the use of innovative reaction conditions, reactors, and reagents. The experience with accelerated weathering and carbonation in engineered processes has been translated into the field of enhanced rock weathering (ERW) in agriculture, where the multidisciplinary approach used has served to advance ERW science and technology in ways that have had a resounding effect on recent commercial deployment. The completed research serves to encourage the adoption of process intensification technologies ...

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Synthesis, characterization and mechanism of porous spherical nesquehonite by CO2 biomimetic mineralization

Cited by 6 publications

References 75 publications

Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate

Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate

Remineralization of Dentin with Cerium Oxide and Its Potential Use for Root Canal Disinfection

Multiscale Process Intensification of Waste Valorization Reactions

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Synthesis, characterization and mechanism of porous spherical nesquehonite by CO2 biomimetic mineralization

Cited by 6 publications

References 75 publications

Formation and Phase Transformation of MgCO3·3H2O Whiskers in the Presence of Sodium Dodecyl Sulfate

Formation and Phase Transformation of MgCO3·3H2O Whiskers in the Presence of Sodium Dodecyl Sulfate

Remineralization of Dentin with Cerium Oxide and Its Potential Use for Root Canal Disinfection

Multiscale Process Intensification of Waste Valorization Reactions

Contact Info

Product

Resources

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Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate

Formation and Phase Transformation of MgCO₃·3H₂O Whiskers in the Presence of Sodium Dodecyl Sulfate