BET analysis
The surface area measurements were interpreted by the model
presented by Brunauer, Emmett and Teller (BET). These measurements
are based on the physical adsorption of gas on the
sample surface. The amount of gas can be defined by the Langmuir
isotherm. The BET is calculated by Eq. (2).
The evaluation of the particle size distribution was performed
by PSA analysis (model Malvern instruments, Isfahan Medical university)
to discover the nanocrystalline shape and size. The PSA
technique that was used to recognize geometric shape of NC
nanoparticles is shown in Table 3. The conditions during PSA analysis
were a temperature of 19.9 ◦C, duration time of 70 s and ethanol
as a dispersant [viscosity (cp = 1.2000)]. The average particle size of
the prepared powder assuming the synthesized nanoparticle was
spheroid and is given by Eq. (2),
D = 6000
S(BET) × (2)
The composites porosity was measured by Archimedes method.
The porosity was calculated according to the following equation:
Porosity = (W2 − W1)
(W2 − W3) × 100% (3)
in which W1 is the weight of composite in air, W2 is the weight of
sample with water, and W3 is the weight of samples suspended in
water.
BET analysisThe surface area measurements were interpreted by the modelpresented by Brunauer, Emmett and Teller (BET). These measurementsare based on the physical adsorption of gas on thesample surface. The amount of gas can be defined by the Langmuirisotherm. The BET is calculated by Eq. (2).The evaluation of the particle size distribution was performedby PSA analysis (model Malvern instruments, Isfahan Medical university)to discover the nanocrystalline shape and size. The PSAtechnique that was used to recognize geometric shape of NCnanoparticles is shown in Table 3. The conditions during PSA analysiswere a temperature of 19.9 ◦C, duration time of 70 s and ethanolas a dispersant [viscosity (cp = 1.2000)]. The average particle size ofthe prepared powder assuming the synthesized nanoparticle wasspheroid and is given by Eq. (2),D = 6000S(BET) × (2)The composites porosity was measured by Archimedes method.The porosity was calculated according to the following equation:Porosity = (W2 − W1)(W2 − W3) × 100% (3)in which W1 is the weight of composite in air, W2 is the weight ofsample with water, and W3 is the weight of samples suspended inwater.
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