Effect of SDS on morphology tailoring of GdVO4:Eu3+ powders under hydrothermal conditions in a wide pH range

Effects of organic additives on morphology and luminescent properties of Eu3+-doped calcium molybdate red phosphors

“…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.…”

“…As the dosage up to 1.00 g, the particle sizes of the smooth twinned hemispheres apparently increase. This observation indicates that tuning the microstructures of CaMoO 4 :Eu 3+ can be through the addition of SDS: (i) the dosage of SDS can control the growth of crystals, thus to prevent the aggregation and obtain smaller particles; (ii) anionic SDS can completely dissolve in water in form of R-OSO 3 − anions, which can affect the formation process of CaMoO 4 :Eu 3+ by reverse micelles mechanism [22]; and (iii) SDS molecules can adhere to the crystal faces preferentially to form an orderly hydrophobic membrane, which can control the grain growth rate effectively [23,37]. While at high SDS concentration, it is supposed that all crystal faces are coated by the SDS molecules.…”

“…While at high SDS concentration, it is supposed that all crystal faces are coated by the SDS molecules. Most molecules would gather mutually to reduce the surface energy in the environment [23], thus to generate large-scaled particles.…”

Zinc vanadate nanorods and their visible light photocatalytic activity

“…The SDS micelles control the surface free energy to affect the crystal growth direction and direct the nucleation and growth of the zinc vanadate nanorods [29]. The selective adsorption of the SDS at the respective counter ions on the crystal faces of the zinc vanadate directs the formation of the zinc vanadate nanorods [30]. Under the hydrothermal conditions of low hydrothermal temperature (80°C) and short duration time (0.5 h), short zinc vanadate nanorods form from the zinc vanadate nuclei through the SDS-assisted Ostwald ripening nucleation process.…”

Structure and photoluminescent properties of green‐emitting terbium‐doped GdV1−xPxO4 phosphor prepared by solution combustion method

“…Gadolinium orthovanadate (GdVO 4 ) and orthophosphate (GdPO 4 )‐based phosphors have been investigated extensively because of their interesting properties such as high melting point, low water solubility, high chemical and thermal stability, efficient energy absorption and transfer . For these reasons, they are extensively applied as lasers, ceramics, sensors, phosphors and heat‐resistant materials .…”