TY - JOUR
T1 - Spray-dried porous silica using an anionic surfactant template for advanced photoluminescence support via ultrasound-assisted deposition
AU - Abdul Ajiz, Hendrix
AU - Widiyastuti, W.
AU - Setyawan, Heru
AU - Nurtono, Tantular
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
PY - 2024/10
Y1 - 2024/10
N2 - Ordered macroporous silica particles as a photomaterial transparent solid matrix were synthesized from sodium silicate (Na2SiO3) as a silica source and sodium lauryl sulfate (SLS, an anionic surfactant), as a template to form pores via the consecutive sol–gel spray drying. The investigation is carried out in two stages, (1) controlling the particle morphology to obtain a spherical shape and (2) controlling the pore structure. The concentrations of the SiO2 precursor, carrier gas flow rate, feeding rate, and drying temperature were varied to identify their effects on particle morphology. Spherical and donut-shaped particle morphologies are more prominent when these parameters are used. On the other hand, the addition of SLS to the SiO2 precursor resulted in controlled macroporous silica particles, depending on the SLS concentration. The deposition of ZnO quantum dots (QDs) on the silica surface stabilizes the optical properties of ZnO by increasing the intensity of photoluminescence (PL) emission and demonstrating excitation-wavelength-dependent photoluminescence. The ZnO/SiO2 composite particles demonstrated the highest PL intensity with the use of 1 CMC SLS addition and a ZnO concentration of 25% mol, which was almost 30,000 times greater than that of pure ZnO particles. Therefore, an even distribution of ZnO QDs on the silica surface, which is influenced by the silica morphology and its ZnO concentration ratio, can minimize ZnO QDs agglomeration, directly reducing its functional characteristics as a photomaterial.
AB - Ordered macroporous silica particles as a photomaterial transparent solid matrix were synthesized from sodium silicate (Na2SiO3) as a silica source and sodium lauryl sulfate (SLS, an anionic surfactant), as a template to form pores via the consecutive sol–gel spray drying. The investigation is carried out in two stages, (1) controlling the particle morphology to obtain a spherical shape and (2) controlling the pore structure. The concentrations of the SiO2 precursor, carrier gas flow rate, feeding rate, and drying temperature were varied to identify their effects on particle morphology. Spherical and donut-shaped particle morphologies are more prominent when these parameters are used. On the other hand, the addition of SLS to the SiO2 precursor resulted in controlled macroporous silica particles, depending on the SLS concentration. The deposition of ZnO quantum dots (QDs) on the silica surface stabilizes the optical properties of ZnO by increasing the intensity of photoluminescence (PL) emission and demonstrating excitation-wavelength-dependent photoluminescence. The ZnO/SiO2 composite particles demonstrated the highest PL intensity with the use of 1 CMC SLS addition and a ZnO concentration of 25% mol, which was almost 30,000 times greater than that of pure ZnO particles. Therefore, an even distribution of ZnO QDs on the silica surface, which is influenced by the silica morphology and its ZnO concentration ratio, can minimize ZnO QDs agglomeration, directly reducing its functional characteristics as a photomaterial.
UR - http://www.scopus.com/inward/record.url?scp=85205485885&partnerID=8YFLogxK
U2 - 10.1007/s10853-024-10248-9
DO - 10.1007/s10853-024-10248-9
M3 - Article
AN - SCOPUS:85205485885
SN - 0022-2461
VL - 59
SP - 18038
EP - 18061
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 38
ER -