All chemicals were obtained from the indicated suppliers and used without further purification. Tetraethyl orthosilicate (TEOS, 99.999% metal basis), hexadecyltrimethylammonium bromide (CTAB H5882, >98%) and branched polyethyleneimine (PEI, MW = 800) were purchased from Sigma-Aldrich. Cr(VI) solutions were prepared by diluting Cr standard solution (Kanto Chemical, Tokyo, Japan) with deionized water. In addition, all vials and tools were cleaned with ethanol three times and deionized water three times before they were used.
Ctab h5882
Manufactured by Merck Group
CTAB H5882 is a laboratory reagent used in various biochemical and molecular biology applications. It is a cationic surfactant that is commonly used for the extraction and purification of nucleic acids, such as DNA and RNA, from biological samples. The core function of CTAB H5882 is to facilitate the solubilization and precipitation of these biomolecules.
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Lab products found in correlation
2 protocols using ctab h5882
1
Synthesis of Cr(VI) Adsorbing Mesoporous Silica
2
Bioactive Glass Nanoparticles with Strontium
Check if the same lab product or an alternative is used in the 5 most similar protocols
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Large pore-sized BG nanoparticles incorporated with Sr ions (0 and 5% w/w) were produced by a sol-gel method using hexadecyltrimethylammonium bromide (CTAB, H5882, Sigma Aldrich, Darmstadt, German) as a structural template. In a typical synthesis, CTAB (1g), calcium nitrate tetrahydrate (C1396, Sigma Aldrich) (0.141g) and strontium nitrate (204498, Sigma Aldrich) (0.084g) were dissolved in a mixture of water, ethanol anhydrous (459836, Sigma Aldrich) and ethyl ether (60-29-7, Sigma Aldrich) (7:
Tetraethyl orthosilicate (TEOS, 333859, Sigma Aldrich) (1.4g) solution was added dropwise into the mixture under stirring. After 4 h of reaction, white precipitate particles were collected and washed with deionized water and ethanol. Samples were dried at 60°C overnight and subsequently calcined at 550°C for 10 h to remove the remaining CTAB and the organic template.
To form nanocement, Sr-BGn powder was mixed with 2.5wt% NaH2PO4 liquid at various powder/liquid ratios (P/L ratios) in the range of 0.3 to 0.5. The cement paste was placed in a cylindrical mold (6 mm diameter x 4 mm height), and then dried at 37°C with 100% humidity condition. BGn nanocement (BGnC) was also prepared by the same procedure as the Sr-BGnC preparation for comparison.
Tetraethyl orthosilicate (TEOS, 333859, Sigma Aldrich) (1.4g) solution was added dropwise into the mixture under stirring. After 4 h of reaction, white precipitate particles were collected and washed with deionized water and ethanol. Samples were dried at 60°C overnight and subsequently calcined at 550°C for 10 h to remove the remaining CTAB and the organic template.
To form nanocement, Sr-BGn powder was mixed with 2.5wt% NaH2PO4 liquid at various powder/liquid ratios (P/L ratios) in the range of 0.3 to 0.5. The cement paste was placed in a cylindrical mold (6 mm diameter x 4 mm height), and then dried at 37°C with 100% humidity condition. BGn nanocement (BGnC) was also prepared by the same procedure as the Sr-BGnC preparation for comparison.
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