I have tried PAA and F-127 to disperse TiO2 nanowires after aggressive probe-sonication which resulted in smaller aggregates upto few microns instead of individually dispersed as seen from DLS, wafer characterization under AFM and drop-cast by SEM.
By adding SDS in the conc. range of 0% to 0.030% studied by X. Li et al. / Science of the Total Environment 574 (2017) 176–182
Shabdiki Chaurasia You need a stabilizer, not a surfactant. This can either be a charge stabilizer (the optimum concentration of phosphate for TiO2). Or a steric stabilizer (the optimum concentration of, say, 50 kDa PEG or PEI). See:
https://www.malvernpanalytical.com/en/learn/events-and-training/webinars/W190528DispNanoMat
Sometimes a charged (usually anionic; cationic surfactants aren't the norm) surfactant can be used to combine both wetting and stabilization but, if your material wets in the continuous phase, then it's not a surfactant you need.
Strictly, the only dispersion agent is energy.
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