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Adsorption of poly(styrenesulfonate) onto different-sized alumina particles: characteristics and mechanisms

Colloid and polymer science, 2019-01, Vol.297 (1), p.13-22 [Tạp chí có phản biện]

Springer-Verlag GmbH Germany, part of Springer Nature 2018 ;Colloid and Polymer Science is a copyright of Springer, (2018). All Rights Reserved. ;ISSN: 0303-402X ;EISSN: 1435-1536 ;DOI: 10.1007/s00396-018-4433-5

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Nhan đề:
Adsorption of poly(styrenesulfonate) onto different-sized alumina particles: characteristics and mechanisms
Tác giả: Pham, Tien Duc ; Do, Thi Uyen ; Pham, Thu Thao ; Nguyen, Thi Anh Huong ; Nguyen, Thi Kim Thuong ; Vu, Ngoc Duy ; Le, Thanh Son ; Vu, Cuong Manh ; Kobayashi, Motoyoshi
Chủ đề: Adsorption ; Aluminum oxide ; Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Complex Fluids and Microfluidics ; Food Science ; Fourier transforms ; Functional groups ; Infrared spectroscopy ; Ions ; Nanotechnology and Microengineering ; Original Contribution ; Physical Chemistry ; Polyelectrolytes ; Polymer Sciences ; Sodium chloride ; Soft and Granular Matter ; Strength ; Surface charge ; Surface chemistry ; Zeta potential
Là 1 phần của: Colloid and polymer science, 2019-01, Vol.297 (1), p.13-22
Mô tả: We report the adsorption characteristics and mechanisms of a strong polyanion, poly(styrenesulfonate), PSS, onto α-Al 2 O 3 with large size (L-Al 2 O 3 ) and small size (S-Al 2 O 3 ) in this paper. Some effective conditions to the adsorption of PSS onto L-Al 2 O 3 and S-Al 2 O 3 such as adsorption time, pH, mass ratio of PSS to α-Al 2 O 3 , and ionic strength were systematically studied. Maximum adsorption capacities of PSS onto both L-Al 2 O 3 and S-Al 2 O 3 were achieved with adsorption time 120 min, mass ratio of PSS to α-Al 2 O 3 20 mg/g, and ionic strength 50 mM NaCl. The PSS adsorption onto S-Al 2 O 3 significantly decreased with increasing pH from 4 to 9 while PSS adsorption onto L-Al 2 O 3 decreased insignificantly in the pH range 4–9. Adsorption of PSS onto both L-Al 2 O 3 and S-Al 2 O 3 increased with increasing salt from 0 to 50 mM NaCl, indicating that electrostatic and none-lectrostatic interactions controlled adsorption at low ionic strength. However, adsorption of PSS was independent on the ionic strength at salt concentration higher than 50 mM. The changes in surface charge after PSS adsorption onto L-Al 2 O 3 and S-Al 2 O 3 were determined by zeta potential while the differences of surface functional groups before and after PSS adsorption were characterized by Fourier-transform infrared spectroscopy (FT-IR). The zeta potential as a function of the mass ratio of PSS to L-Al 2 O 3 and S-Al 2 O 3 agreed well with the adsorption capacity against the mass ratio. Adsorption mechanisms of PSS onto L-Al 2 O 3 and S-Al 2 O 3 were also discussed based on the changes in zeta potential, the differences of surface functional groups, and adsorbed amount as a function of the mass ratio of PSS to α-Al 2 O 3 . Graphical abstract ᅟ
Nơi xuất bản: Berlin/Heidelberg: Springer Berlin Heidelberg
Ngôn ngữ: English
Số nhận dạng: ISSN: 0303-402X
EISSN: 1435-1536
DOI: 10.1007/s00396-018-4433-5
Nguồn: ProQuest Central

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Adsorption of poly(styrenesulfonate) onto different-sized alumina particles: characteristics and mechanisms

Springer-Verlag GmbH Germany, part of Springer Nature 2018 ;Colloid and Polymer Science is a copyright of Springer, (2018). All Rights Reserved. ;ISSN: 0303-402X ;EISSN: 1435-1536 ;DOI: 10.1007/s00396-018-4433-5

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