title: Facile preparation of hierarchical polyaniline-lignin composite with a reactive silver-ion adsorbability.
abstract: A hierarchical polyaniline-lignin (PANI-EHL) composite was facilely prepared from aniline and enzymatic hydrolysis lignin in an aqueous solution of ammonia. The morphology, FTIR, UV-vis spectra, thermogravimetric analysis, and wide-angle X-ray diffraction analyses of the composite were systematically investigated. Furthermore, the sorption property of the PANI-EHL composite for silver ions in aqueous solution was studied via a static sorption technique. The result demonstrated that the PANI-EHL composite possessed a strongly reactive sorption characteristic for silver ions. Serrated silver threads with length up to 10 mm were obtained by using the PANI-EHL composite as a low-cost adsorbent. Moreover, the role of EHL and polyaniline in the PANI-EHL composite for silver ions sorption was investigated. The investigation indicated that the EHL unit could play a vital role in the chelation of silver ions, whereas the polyaniline unit played a leading role in redox sorption.
authors.affiliation: College of Materials Science and Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350108, PR China.
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: He
authors.forename: Qiu-Feng
authors.initials: QF
authors.lastname: Lü
authors.forename: Jia-Yin
authors.initials: JY
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D000814:Aniline Compounds / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000295:instrumentation*; D007477:Ions / Q000737:chemistry*; D008031:Lignin / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D007477:Ions; D014874:Water Pollutants, Chemical; C416807:polyaniline; D012834:Silver; D008031:Lignin