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Controlled Preparation and Reactive Silver‐Ion Sorption of Electrically Conductive Poly( N ‐butylaniline)–Lignosulfonate Composite Nanospheres
Author(s) -
Lü QiuFeng,
Zhang JiaYin,
He ZhiWei
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201202203
Subject(s) - sorption , materials science , dispersant , dopant , composite number , polymerization , ion , chemical engineering , silver nanoparticle , nanoparticle , polymer chemistry , nuclear chemistry , doping , nanotechnology , dispersion (optics) , chemistry , composite material , organic chemistry , polymer , adsorption , physics , optoelectronics , optics , engineering
Electroconductive poly( N ‐butylaniline)–lignosulfonate (PBA–LS) composite nanospheres were prepared in a facile way by in situ, unstirred polymerization of N ‐butylaniline with lignosulfonate (LS) as a dispersant and dopant. The LS content was used to optimize the size, structure, electroconductivity, solubility, and silver ion adsorptive capacity of the PBA–LS nanospheres. Uniform PBA–LS10 nanospheres with a minimal mean diameter of 375 nm and high stability were obtained when the LS content was 10 wt %. The PBA–LS10 nanospheres possess an increased electroconductivity of 0.109 S cm −1 compared with that of poly( N ‐butylaniline) (0.0751 S cm −1 ). Furthermore, the PBA–LS10 nanospheres have a maximal silver‐ion sorption capacity of 815.0 mg g −1 at an initial silver ion concentration of 50 mmol L −1 (25 °C for 48 h), an enhancement of 70.4 % compared with PBA. Moreover, a sorption mechanism of silver ions on the PBA–LS10 nanospheres is proposed. TEM and wide‐angle X‐ray diffraction results showed that silver nanoparticles with a diameter size range of 6.8–55 nm was achieved after sorption, indicating that the PBA–LS10 nanospheres had high reductibility for silver ions.