Cetyltrimethylammonium bromide in the synthesis of mesoporous silica nanoparticles: General aspects and in vitro toxicity

Carvalho, Gabriela Corrêa; Marena, Gabriel Davi; Karnopp, Juliana Camila Fischer; Jorge, Juliana; Sábio, Rafael Miguel; Martines, Marco Antônio Utrera; Bauab, Taís Maria; Chorilli, Marlus

doi:10.1016/j.cis.2022.102746

Cited by 52 publications

(18 citation statements)

References 124 publications

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“…CTAB has a hydrophobic long alkane tail and a hydrophilic head. 45 In the solvothermal process, the hydrophobic tail of CTAB is oriented toward LiCoPO 4 , while the head faces the solvent, facilitating micelle formation. 46−48 This orientation induces grain growth along the (010) direction and diminishes the grain size.…”

Section: Resultsmentioning

confidence: 99%

“…The enhanced electrochemical performance of LiCoPO 4 prepared with the help of CTAB can be attributed to the reduction in grain size and the presence of a dual carbon layer. CTAB has a hydrophobic long alkane tail and a hydrophilic head . In the solvothermal process, the hydrophobic tail of CTAB is oriented toward LiCoPO 4 , while the head faces the solvent, facilitating micelle formation. − This orientation induces grain growth along the (010) direction and diminishes the grain size.…”

Section: Results and Discussionmentioning

confidence: 99%

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Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Xing,

Sun,

Cui

et al. 2024

ACS Sustainable Chem. Eng.

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In recent years, the rapid development of new electric vehicles has ushered in a golden age of lithium-ion battery research. In this research, surfactant induced carbon-decorated nanoplates LiCoPO 4 were successfully prepared using a combination of solvothermal treatment and the carbonization process. The results show that the incorporation of cetyltrimethylammonium bromide (CTAB) surfactant presents dual influences on the preparation process of LiCoPO 4 cathode materials. The first one is that CTAB could introduce micelles into the hydrothermal synthesis system to facilitate the reduction of grain size, therefore shortening the lithium-ion transmission path. Another is a unique carbon coating with dual layer structure that was formed during a sintering process due to the presence of a carbon substance derived from CTAB in the solvothermal treatment, resulting in nitrogen doping in the carbon layer and the formation of Co−N bonds on the surface. After optimization of the preparation, LiCoPO 4 with the incorporation of 0.2 mmol of CTAB exhibited a high lithiumion diffusion coefficient of 5.99 × 10 −14 cm 2 s −1 and an initial specific capacity of 120.1 mAh g −1 at 1 C, and its capacity retention ratio was 84.6% after 400 cycles. Furthermore, this material also delivered an initial specific capacity of 113.0 mAh g −1 at a high current rate of 5 C. The preparation method of materials presented here offers a promising strategy to enhance the feasibility of industrial application for high voltage olivine LiCoPO 4 .

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Section: Resultsmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Xing,

Sun,

Cui

et al. 2024

ACS Sustainable Chem. Eng.

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“…Moreover, the body weight of the rats showed a significant increase following CuS@MSN-SCS treatment (Figure D), and no notable signs of inflammation or lesions were observed in organ tissues (Figure S7), indicating the nontoxic nature of CuS@MSN-SCS toward normal tissues and organs. In the XPS analysis, trace amounts of residual CTAB, known for its toxicity to eukaryotic cells, were detected at a very low level in CuS@MSN-SCS. However, existing studies have shown that rats exhibit a certain tolerance to CTAB, with administration in drinking water at doses below 20 mg/kg/day for one year .…”

Section: Resultsmentioning

confidence: 99%

Sulfated Chitosan-Modified CuS Nanocluster: A Versatile Nanoformulation for Simultaneous Antibacterial and Bone Regenerative Therapy in Periodontitis

Chen,

Huang,

Wang

et al. 2024

ACS Nano

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Periodontitis, a prevalent chronic inflammatory disease worldwide, is triggered by periodontopathogenic bacteria, resulting in the progressive destruction of periodontal tissue, particularly the alveolar bone. To effectively address periodontitis, this study proposed a nanoformulation known as CuS@MSN-SCS. This formulation involves coating citrate-grafted copper sulfide (CuS) nanoparticles with mesoporous silica (MSNs), followed by surface modification using amino groups and sulfated chitosan (SCS) through electrostatic interactions. The objective of this formulation is to achieve efficient bacteria removal by inducing ROS signaling pathways mediated by Cu 2+ ions. Additionally, it aims to promote alveolar bone regeneration through Cu 2+ -induced pro-angiogenesis and SCS-mediated bone regeneration. As anticipated, by regulating the surface charges, the negatively charged CuS nanoparticles capped with sodium citrate were successfully coated with MSNs, and the subsequent introduction of amine groups using (3-aminopropyl)triethoxysilane was followed by the incorporation of SCS through electrostatic interactions, resulting in the formation of CuS@MSN-SCS. The developed nanoformulation was verified to not only significantly exacerbate the oxidative stress of Fusobacterium nucleatum, thereby suppressing bacteria growth and biofilm formation in vitro, but also effectively alleviate the inflammatory response and promote alveolar bone regeneration without evident biotoxicity in an in vivo rat periodontitis model. These findings contribute to the therapeutic effect on periodontitis. Overall, this study successfully developed a nanoformulation for combating bacteria and facilitating alveolar bone regeneration, demonstrating the promising potential for clinical treatment of periodontitis.

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“…When employing the solvent method to remove CTAB, it is necessary to use organic solvents such as ethanol and methanol to ensure complete removal [13]. Some researchers used HCl/methanol as a solvent to extract CTAB [14,15].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the method for removing MSNs templates using an ionic liquid ([C₄mim]Cl)

Pu,

Cai,

Chen

et al. 2024

Nanotechnology

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The key step in preparing mesoporous silica is to remove the organic template agent, and the most common method used to achieve this goal is high-temperature calcination. However, this method has many disadvantages, one of which is that it reduces the silanol density on the surface of mesoporous silica, which affects its subsequent modification. Ionic liquids (ILs) are often used as extractants. In this work, the 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) IL is considered, and the effects of its concentration, reaction temperature, and reaction time as well as HCl concentration on the extraction rate and silanol density were investigated using an IL extraction template agent (cetyl trimethyl ammonium bromide (CTAB)). The results show that an IL concentration of 10%, a reaction temperature of 120 ℃, a reaction time of 12 h, and an HCl concentration of 1% are the best reaction parameters; with these parameters, the extraction rate and the silanol density were found to be 93.19% and 2.23%, respectively. The silanol density of mesoporous silica treated by calcination is only 0.81%. A higher silanol density provides more reaction sites, so that the modified mesoporous silica treated with the IL can be loaded with more Zn ions.

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Cetyltrimethylammonium bromide in the synthesis of mesoporous silica nanoparticles: General aspects and in vitro toxicity

Cited by 52 publications

References 124 publications

Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Sulfated Chitosan-Modified CuS Nanocluster: A Versatile Nanoformulation for Simultaneous Antibacterial and Bone Regenerative Therapy in Periodontitis

Optimizing the method for removing MSNs templates using an ionic liquid ([C₄mim]Cl)

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Cetyltrimethylammonium bromide in the synthesis of mesoporous silica nanoparticles: General aspects and in vitro toxicity

Cited by 52 publications

References 124 publications

Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Surfactant Induced Crystal Regulation and Dual Layer Carbon Coating Formation for Enhanced Performance of High Voltage Olivine-Type Lithium Cobalt Phosphate Cathode Materials

Sulfated Chitosan-Modified CuS Nanocluster: A Versatile Nanoformulation for Simultaneous Antibacterial and Bone Regenerative Therapy in Periodontitis

Optimizing the method for removing MSNs templates using an ionic liquid ([C4mim]Cl)

Contact Info

Product

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About

Optimizing the method for removing MSNs templates using an ionic liquid ([C₄mim]Cl)