A new method to prepare ‘Maya red’ pigment from sepiolite and Basic red 46

Chen, Huiwen; Zhang, Zepeng; Zhuang, Guanzheng; Jiang, Rui

doi:10.1016/j.clay.2019.03.023

Cited by 27 publications

(23 citation statements)

References 46 publications

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“…Therefore, biohybrid compounds that combine these biomolecules and an inorganic substrates such as clay minerals have been widely investigated to reverse these limitations by interaction/protection in the host materials (Kohno et al, 2009;Teixeira-Neto et al, 2012;Pimchan et al, 2014;Lu et al, 2019;Samuei et al, 2020). This strategy is inspired by Maya Blue pigments, in which a variety of clay minerals and organic dyes have been used to prepare stable pigments (Trigueiro et al, 2018;Chen et al, 2019;Zhuang et al, 2019a;Silva et al, 2020). Concerning the ACN stabilization, montmorillonite, synthetic non-swelling mica and silica were employed by Kohno et al, 2009 to improve the stability of ACN against alkaline environment and visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

Lima

Silva

Silva-Filho

et al. 2020

Applied Clay Science

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Hybrid pigments based on organo-saponite (cetyltrimethyl ammonium bromide (CTAB-Sap) and a commercial anthocyanin (ACN) dye, Crystal Red Grape, were prepared. The interactions between organic dye guest and hosts (including saponite and organo-saponite) were investigated by X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy. The pigments exhibit different colors function of their host-guest interactions. The blue color of organo-clay-anthocyanin indicates the stabilization of quinoidal base form of the dye. The hybrids have good stability against visible light irradiation and basic pH conditions. These dyed materials are environmentally friendly and can be promising candidates in different application fields.

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Section: Introductionmentioning

confidence: 99%

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

Lima

Silva

Silva-Filho

et al. 2020

Applied Clay Science

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“…The ΔE variation in time light exposure are shown in Fig. 9, which the smaller color difference reveals the better color stability of the pigment [24], [53]. The maximum values of ΔE observed were 24, 13 and 7 for Hec-ALZ pH9, PEC_Hec-ALZ pH9 and CTA_Hec-ALZ at pH9 respectively, and 18, 10 and 4…”

Section: Light-induced Ageingmentioning

confidence: 93%

“…The inorganic cations on the clay surface (Na + , K + , and Ca 2+ ) can be replaced by organic cations through ion exchange and the clay surface became organophilic [22]. The use of clays for the preparation of organic-inorganic hybrid pigments, in order to improve stability, has been increasingly reported in the literature [23][24][25]. In particular, the smectite clays, which constitute a family of layered oxides with 2:1 layer lattice structures [26].…”

Section: Introductionmentioning

confidence: 99%

Through alizarin-hectorite pigments: Influence of organofunctionalization on fading

Silva

Lima

Filho

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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In this work, hectorite/alizarin pigments were prepared at pH 9 and 12.Hectorite was initially modified with cetyltrimethylammonium and pectine to produce organo-hectorites. The influence of organo-hectorite on the stabilization of alizarin was evaluated. X-ray diffraction suggested the formation of exfoliated/delaminated structures after organofunctionalization of the hectorite. For raw hectorite and their derivatives with pectin, the formation of hybrid pigments was confirmed by infrared spectroscopy. Thermogravimetry curves confirm the hectorite organofunctionalization and that the alizarin loading was higher at pH 12. The hybrids prepared at pH 12 show more photostability than ones prepared at pH 9. This behavior was probably due to the total deprotonation of dye molecules, which promoted better interactions between the hosts and the guests.

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“…0.4 nm × 1 nm), it can be generated by the penetration of organic and inorganic cations. The sepiolite surface has many silanol (Si-OH) groups as a result of a discontinued silica sheet on the outer 2:1 layers [226][227][228][229] (Figures 6 and 7). On the sepiolite structure, three modification/adsortion zones are distinguished: Si-OH groups along the component fiber axis; oxygen ions on the tetrahedric silica layers; and a few cationic exchange gaps.…”

Section: Sepiolitementioning

confidence: 99%

Uses of Nanoclays and Adsorbents for Dye Recovery: A Textile Industry Review

et al. 2021

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Wastewater recovery is one of the most pressing contaminant-related subjects in the textile industry. Many cleaning and recovery techniques have been applied in recent decades, from physical separation to chemical separation. This work reviews textile wastewater recovery by focusing on natural or synthetic nanoclays in order to compare their capabilities. Presently, a wide variety of nanoclays are available that can adsorb substances dissolved in water. This review summarizes and describes nanoclay modifications for different structures (laminar, tubular, etc.) to compare adsorption performance under the best conditions. This adsorbent capacity can be used in contaminant industries to recover water that can be used and be recontaminated during a second use to close the production circle. It explores and proposes future perspectives for the nanoclay hybrid compounds generated after certain cleaning steps. This is a critical review of works that have studied adsorption or desorption procedures for different nanoclay structures. Finally, it makes a future application proposal by taking into account the summarized pros and cons of each nanoclay. This work addresses contaminant reuse, where part of the employed dyes can be reused in printing or even dyeing processes, depending on the fixing capacity of the dye in the nanoclay, which is herein discussed.

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A new method to prepare ‘Maya red’ pigment from sepiolite and Basic red 46

Cited by 27 publications

References 46 publications

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

Saponite-anthocyanin derivatives: The role of organoclays in pigment photostability

Through alizarin-hectorite pigments: Influence of organofunctionalization on fading

Uses of Nanoclays and Adsorbents for Dye Recovery: A Textile Industry Review

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