Universal dispersing agent for electrophoretic deposition of inorganic materials with improved adsorption, triggered by chelating monomers

Liu, Yangshuai; Luo, Dan; Ata, M.S.; Zhang, Tianshi; Wallar, C. J.; Zhitomirsky, Igor

doi:10.1016/j.jcis.2015.09.053

Cited by 17 publications

(15 citation statements)

References 37 publications

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“…The role of the dye dispersant in the dyeing process is to react as a surfactant to break the agglomeration of dye particles . Sulfonated lignin with a high molecular weight will facilitate steric hindrance to prevent the agglomeration, and the molecular weight of sulfonated lignin will be significantly increased by using the sulfonation reagents with more aliphatic carbons, which will promote the dye dispersion and the stability. , Meanwhile, the introduction of sulfonic groups will provide electrostatic repulsion that also can stabilize and disperse dye particles. The sulfonated lignin with a longer aliphatic chain exhibited a higher sulfonation degree (Table ), which would enhance the dye dispersion and the stability by providing strong electrostatic repulsion …”

Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Sulfonation of Lignin for the Fabrication of a High-Performance Dye Dispersant

Xiao

Jiang

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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Designing a valorization approach of lignin is essential to achieve "lignin-first" biorefining, which enables the economic feasibility of the lignocellulosic biorefinery industry. Herein, microwave-assisted sulfonation of lignin was investigated with multiple chemicals for the production of a lignin-based dye dispersant, and the effect of the aliphatic chain of sulfonation reagents on the dispersive performance of the sulfonated lignin was revealed. Structural characterization recommended that 1,4butanesultone exhibited the best reaction activity, and its sulfonation product (SL4) exhibited the highest molecular weight (7190 Da) and sulfonic group content (1.59 mmol•g −1 ) among all samples, because of its long aliphatic chain. The high content of sulfonic group and the high molecular weight of SL4 improved the dispersive performance with excellent high temperature stability in which the dyeing rate was 87.9%. The fiber staining effect evaluation of sulfonated lignin dispersants demonstrated that the etherification by 1,4-butanesultone could reduce the phenolic hydroxyl content of lignin to prevent the adsorption of the dispersant on fiber, limiting the fiber staining by sulfonated lignin during the dyeing process. This highly efficient lignin sulfonation can facilitate the valorization of lignin by fabricating the lignin-based dye dispersant for widespread industrial applications.

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Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Sulfonation of Lignin for the Fabrication of a High-Performance Dye Dispersant

Xiao

Jiang

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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“…However, the use of dispersing agents can introduce additional considerations of chemical compatibility between the additive and solvent and nonideal behavior in solution, while particular deposition parameters can introduce unfavorable particle-substrate interactions and non-ideal particle behavior in solution. Ultimately, these approaches can limit the maximum achievable yield (Yum et al, 2003;Besra and Liu, 2007;Khalili et al, 2016;Liu et al, 2016;Dhiflaoui et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

et al. 2021

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Incorporating nanoparticles into devices for a wide range of applications often requires the formation of thick films, which is particularly necessary for improving magnetic power storage, microwave properties, and sensor performance. One approach to assembling nanoparticles into films is the use of electrophoretic deposition (EPD). This work seeks to develop methods to increase film thickness and stability in EPD by increasing film-substrate interactions via functionalizing conductive substrates with various chelating agents. Here, we deposited iron oxide nanoparticles onto conductive substrates functionalized with three chelating agents with different functional moieties and differing chelating strengths. We show that increasing chelating strength can increase film-substrate interactions, resulting in thicker films when compared to traditional EPD. Results will also be presented on how the chelating strength relates to film formation as a function of deposition conditions. Yield for EPD is influenced by deposition conditions including applied electric field, particle concentration, and deposition time. This work shows that the functionalization of substrates with chelating agents that coordinate strongly with nanoparticles (phosphonic acid and dopamine) overcome parameters that traditionally hinder the deposition of thicker and more stable films, such as applied electric field and high particle concentration. We show that functionalizing substrates with chelating agents is a promising method to fabricate thick, stable films of nanoparticles deposited via EPD over a larger processing space by increasing film-substrate interactions.

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Section: Introductionmentioning

confidence: 99%

“…Two variants of the electrodeposition processes have been developed for use in SOFC technology: electrophoretic deposition (EPD) and electrolytic deposition (ELD). The features of these two processes and their applications were analyzed in a number of reviews presented by I. Zhitomirsky [20,21]; the basic difference between these methods is that EPD is performed from suspensions of ceramic particles, while ELD is related to deposition from solutions of salts involving electrode reactions (Figure 1). with pulsed laser deposition and molecular beam epitaxy, allowing deposition of nanostructures without high temperature treatment, electrodeposition of nanocomposites-including those with graphene-are widely represented in technology for low temperature fuel cells as well as lithium-ion batteries, microbial fuel cells and supercapacitors [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Two variants of the electrodeposition processes have been developed for use in SOFC technology: electrophoretic deposition (EPD) and electrolytic deposition (ELD). The features of these two processes and their applications were analyzed in a number of reviews presented by I. Zhitomirsky [20,21]; the basic difference between these methods is that EPD is performed from suspensions of ceramic particles, while ELD is related to deposition from solutions of salts involving electrode reactions (Figure 1). Metal ions or complexes are hydrolyzed by the electrogenerated base in the ELD process to form oxide, hydroxide or peroxide deposits on the substrates, which can be further converted to corresponding oxides by thermal treatment at relatively low temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Калинина

Pikalova

2021

Materials

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Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.

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Universal dispersing agent for electrophoretic deposition of inorganic materials with improved adsorption, triggered by chelating monomers

Cited by 17 publications

References 37 publications

Microwave-Assisted Sulfonation of Lignin for the Fabrication of a High-Performance Dye Dispersant

Microwave-Assisted Sulfonation of Lignin for the Fabrication of a High-Performance Dye Dispersant

Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

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