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Pregled bibliografske jedinice broj: 987691

Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface


Klačić, Tin; Sadžak, Anja; Jukić, Jasmina; Preočanin, Tajana; Kovačević, Davor
Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface // Colloids and surfaces. A, Physicochemical and engineering aspects, 570 (2019), 32-38 doi:10.1016/j.colsurfa.2019.03.002 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 987691 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface

Autori
Klačić, Tin ; Sadžak, Anja ; Jukić, Jasmina ; Preočanin, Tajana ; Kovačević, Davor

Izvornik
Colloids and surfaces. A, Physicochemical and engineering aspects (0927-7757) 570 (2019); 32-38

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cerium(IV) oxide ; poly(sodium 4-styrenesulfonate) ; adsorption ; surface potential ; zeta potential

Sažetak
The interfacial properties of the system cerium(IV) oxide/poly(sodium 4-styrenesulfonate) (NaPSS) aqueous solution were studied in a broad pH region by means of inner surface potential, zeta potential and adsorption measurements. Surface potential data were obtained using a single crystal electrode, while zeta potential and adsorption data were obtained using synthetized CeO2 nanoparticles. In order to examine the adsorption of NaPSS on cerium(IV) oxide in detail, surface and electrokinetic potentials of ceria particles were measured in the absence and in the presence of NaPSS. The results of surface potential measurements showed that negatively charged NaPSS molecules exhibit high adsorption affinity towards the CeO2 surface. Titration with NaPSS in the acidic region, where the ceria surface is originally positively charged, suggested that adsorption of negatively charged NaPSS molecules compensates positive charge at the surface and adsorption proceeds until the reversal of surface charge produces a critical value of the potential affecting the state of adsorbed NaPSS molecules. Adsorption of NaPSS on cerium(IV) oxide in the examined pH range was additionally confirmed by zeta potential and adsorption measurements in sodium chloride aqueous solution. From the measured pH dependence of the electrokinetic potential of CeO2 nanoparticles, isoelectric point was determined to be pHiep ≈ 5.4, while the electrokinetic potential in the presence of NaPSS was found to be negative in the whole investigated pH region. Finally, adsorption measurements were carried out which enabled the determination of the maximum surface concentration of the adsorbed polyelectrolyte as Γmax ≈ 1 micromol m-2.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-6972 - Električno nabijanje međupovršina na granici čvrsta faza/vodena otopina elektrolita (Tajana Preočanin, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Tajana Begović (autor)

Avatar Url Davor Kovačević (autor)

Avatar Url Jasmina Jukić (autor)

Avatar Url Tin Klačić (autor)

Avatar Url Anja Sadžak (autor)

Citiraj ovu publikaciju

Klačić, Tin; Sadžak, Anja; Jukić, Jasmina; Preočanin, Tajana; Kovačević, Davor
Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface // Colloids and surfaces. A, Physicochemical and engineering aspects, 570 (2019), 32-38 doi:10.1016/j.colsurfa.2019.03.002 (međunarodna recenzija, članak, znanstveni)
Klačić, T., Sadžak, A., Jukić, J., Preočanin, T. & Kovačević, D. (2019) Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface. Colloids and surfaces. A, Physicochemical and engineering aspects, 570, 32-38 doi:10.1016/j.colsurfa.2019.03.002.
@article{article, year = {2019}, pages = {32-38}, DOI = {10.1016/j.colsurfa.2019.03.002}, keywords = {cerium(IV) oxide, poly(sodium 4-styrenesulfonate), adsorption, surface potential, zeta potential}, journal = {Colloids and surfaces. A, Physicochemical and engineering aspects}, doi = {10.1016/j.colsurfa.2019.03.002}, volume = {570}, issn = {0927-7757}, title = {Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface}, keyword = {cerium(IV) oxide, poly(sodium 4-styrenesulfonate), adsorption, surface potential, zeta potential} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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