Enhancing dispersion of halloysite nanotubes via chemical modification
Source abstract
Abstract
Uniform and dispersed halloysite nanotubes (HNTs) were obtained using sodium dodecyl sulfate (SDS) to disperse the halloysite suspension. The dispersed HNTs were characterized by X-ray diffraction, scanning electron microscope, energy-dispersive spectrometry, transmission electron microscope, Fourier transform infrared spectroscopy, thermogravimetry–differential scanning calorimetry and zeta potential. The results indicated that SDS was adsorbed and scattered on the HNTs, which could enhance the stability and dispersibility of suspension by the electrostatic effect. The zeta potential of dispersed HNTs became larger than that of the raw within the pH ranging from 2.5 to 11.9, which reached −31 mV at pH around 8 when the concentration of SDS was 1.22 g/L. The diameter of dispersed HNTs ranged from 0.6 to 1.2 μm. A corresponding dispersive mechanism was investigated.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Iron oxide chemistry and applications · Therapeutic Uses of Natural Elements
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
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