Tuning porous silica nanofibers by colloid electrospinning for dye adsorption

2014 ◽  
Vol 313 ◽  
pp. 389-395 ◽  
Author(s):  
Chaojie Wu ◽  
Wei Yuan ◽  
Salem S. Al-Deyab ◽  
Ke-Qin Zhang
Keyword(s):  
Porous Silica ◽  
Dye Adsorption ◽  
Silica Nanofibers

scholarly journals Solution Blow Spun Silica Nanofibers: Influence of Polymeric Additives on the Physical Properties and Dye Adsorption Capacity

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3135
Author(s):  
Rosiane Maria da Costa Farias ◽  
Lucas Leite Severo ◽  
Artur P. Klamczynski ◽  
Eliton Souto de Medeiros ◽  
Lisiane Navarro de Lima Santana ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Physical Properties ◽  
Porous Silica ◽  
Dye Adsorption ◽  
Silica Particles ◽  
Simple Method ◽  
Polymeric Additives ◽  
High Fraction ◽  
Silica Nanofibers ◽  
Pore Properties

The physical properties of porous silica nanofibers are an important factor that impacts their performance in various applications. In this study, porous silica nanofibers were produced via solution blow spinning (SBS) from a silica precursor/polymer solution. Two polyvinylpyrrolidone (PVP, Mw = 360,000 and 1,300,000) were chosen as spinning aids in order to create different pore properties. The effect of their physical properties on the adsorption of methylene blue (MB) in an aqueous solution was explored. After forming, the nanofibers were calcined to remove the organic phase and create pores. The calcined nanofibers had a large amount of micro and mesopores without the use of additional surfactants. The molecular weight of the PVP impacted the growth of silica particles and consequently the pore size. High Mw PVP inhibited the growth of silica particles, resulting in a large volume of micropores. On the other hand, silica nanofibers with a high fraction of mesopores were obtained using the lower Mw PVP. These results demonstrate a simple method of producing blow spun silica nanofibers with defined variations of pore sizes by varying only the molecular weight of the PVP. In the adsorption process, the accessible mesopores improved the adsorption performance of large MB molecules.

Solution blow spun spinel ferrite and highly porous silica nanofibers

2018 ◽  
Vol 44 (9) ◽  
pp. 10984-10989 ◽  
Author(s):  
Rosiane Maria da Costa Farias ◽  
Lucas Leite Severo ◽  
Danubia Lisboa da Costa ◽  
Eliton Souto de Medeiros ◽  
Gregory M. Glenn ◽  
...  
Keyword(s):  
Spinel Ferrite ◽  
Porous Silica ◽  
Silica Nanofibers ◽  
Highly Porous

scholarly journals Green synthesis of porous N-Carbon/Silica nanofibers by solution blow spinning and evaluation of their efficiency in dye adsorption

2020 ◽  
Vol 9 (3) ◽  
pp. 3038-3046 ◽  
Author(s):  
Rosiane Maria da Costa Farias ◽  
Mariaugusta Ferreira Mota ◽  
Lucas Leite Severo ◽  
Eliton Souto de Medeiros ◽  
Artur P. Klamczynski ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Dye Adsorption ◽  
Solution Blow Spinning ◽  
Silica Nanofibers

Electrospinning of Porous Silica Nanofibers Containing Silver Nanoparticles for Catalytic Applications

2007 ◽  
Vol 19 (6) ◽  
pp. 1231-1238 ◽  
Author(s):  
Alpa C. Patel ◽  
Shuxi Li ◽  
Ce Wang ◽  
Wanjin Zhang ◽  
Yen Wei
Keyword(s):  
Silver Nanoparticles ◽  
Porous Silica ◽  
Silica Nanofibers ◽  
Catalytic Applications

scholarly journals Immobilization of aPleurotus ostreatusLaccase Mixture on Perlite and Its Application to Dye Decolourisation

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Cinzia Pezzella ◽  
Maria Elena Russo ◽  
Antonio Marzocchella ◽  
Piero Salatino ◽  
Giovanni Sannia
Keyword(s):  
Porous Silica ◽  
Dye Adsorption ◽  
Fine Tuning ◽  
Conversion Degree ◽  
Related Enzyme ◽  
Dye Decolourisation ◽  
Recycle Reactor ◽  
Reactor Space ◽  
Scale Reactor ◽  
Catalytic Performances

In the present study, a crude laccase preparation fromPleurotus ostreatuswas successfully immobilized on perlite, a cheap porous silica material, and tested for Remazol Brilliant Blue R (RBBR) decolourisation in a fluidized bed recycle reactor. Results showed that RBBR decolourisation is mainly due to enzyme action despite the occurrence of dye adsorption-related enzyme inhibition. Fine tuning of immobilization conditions allowed balancing the immobilization yield and the resulting rate of decolourisation, with the adsorption capacity of the solid biocatalyst. In the continuous lab scale reactor, a maximum conversion degree of 56.1% was achieved at reactor space-time of 4.2 h. Stability and catalytic parameters of the immobilized laccases were also assessed in comparison with the soluble counterparts, revealing an increase in stability, despite a reduction of the catalytic performances. Both effects are most likely ascribable to the occurrence of multipoint attachment phenomena.

Cationic dye adsorption in sugar cane juice

1959 ◽  
Vol 9 (9) ◽  
pp. 482-486
Author(s):  
M. C. Bennett ◽  
D. A. Haydon
Keyword(s):  
Sugar Cane ◽  
Dye Adsorption ◽  
Cationic Dye ◽  
Cane Juice ◽  
Sugar Cane Juice

Preparation of nanocomposite hydrogels with nanoclay: characterization, swelling properties and dye adsorption behavior

2020 ◽  
Vol 65 (2) ◽  
pp. 119-133
Author(s):  
Nesrimne SEDIIKI ◽  
◽  
Djamel ALIOUCHE ◽  
Imene BOUDHENE ◽  
◽  
...  
Keyword(s):  
Dye Adsorption ◽  
Adsorption Behavior ◽  
Swelling Properties ◽  
Nanocomposite Hydrogels

SiO2 Entrapment of Animal Cells for Hybrid Bioartificial Organs

2000 ◽  
Vol 628 ◽  
Author(s):  
Giovanni Carturan ◽  
Renzo Dal Monte ◽  
Maurizio Muraca
Keyword(s):  
Gas Phase ◽  
Mechanical Stability ◽  
Porous Silica ◽  
Collagen Matrix ◽  
Homogeneous Layer ◽  
Animal Cells ◽  
Bioartificial Organs ◽  
Liver And Pancreas ◽  
Encapsulation Method ◽  
Metabolic Activities

ABSTRACTSi-alkoxides in gas phase are reactive towards the surface of animal cells, depositing a homogeneous layer of porous silica. This encapsulation method preserves cell viability and does not alter the hindrance of the biological load.In the prospective use for the design of a hybrid bioartificial liver, hepatocytes in a collagen matrix can be entrapped by the siliceous deposit which provides definite mechanical stability to the collagen matrix and molecular cutoff vs. high molecular weight proteins, including immunoglobulins. The functionality of the encapsulated cell load is maintained for the expressions of typical liver and pancreas metabolic activities.

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