“…After nucleation, the SDBS and SDS molecules are adsorbed onto the crystal faces preferentially and directed the growth of crystals to different forms [23,24], leading to the formation of uniform micro-hemispheres. By controlling surface free energy, the surfactants can affect the crystal growth direction [23,25,26]. Furthermore, the lipophilic groups of SDBS has one more benzene ring than that of SDS, which makes SDBS possesses larger space steric hindrance, thus to reduce the crystal growth speed under the control of SDBS.…”