title: Three-dimensional Fe3O4-graphene macroscopic composites for arsenic and arsenate removal.
abstract: 3D graphene macroscopic gel synthesized via self-assembly of GO nanosheets under basic conditions at low temperature is modified with polydopamine and Fe3O4 nanoparticles. The modification of polydopamine can not only strengthen the 3D graphene-based macroscopic architecture but also enhance the loadage and binding ability of Fe3O4 nanoparticles. The synthesized 3D Fe3O4-graphene macroscopic composites are characterized by SEM, XRD, XPS, BET, Raman and magnetic property and used as a versatile adsorbent for sub-ppm concentration of As(III) and As(V) removal from aqueous solutions. The experimental results suggest that the synthesized 3D Fe3O4-graphene macroscopic composites are promising for treating low concentration of arsenic contaminated water.
authors.affiliation: School of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian 350002, China; Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, and College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China. Electronic address: lqguo@fzu.edu.cn.
authors.forename: Liangqia
authors.initials: L
authors.lastname: Guo
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, and College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Peirong
authors.initials: P
authors.lastname: Ye
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, and College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian 350002, China; Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, and College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Fengfu
authors.initials: F
authors.lastname: Fu
authors.affiliation: School of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian 350002, China.
authors.forename: Zujian
authors.initials: Z
authors.lastname: Wu
mesh_terms: D000327:Adsorption; D001149:Arsenates / Q000302:isolation & purification*; D001151:Arsenic / Q000302:isolation & purification*; D005296:Ferrous Compounds / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007211:Indoles / Q000737:chemistry; D008280:Magnetics; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles; D011108:Polymers / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013696:Temperature; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification; D014961:X-Ray Diffraction
chemical_list: D001149:Arsenates; D005296:Ferrous Compounds; D007202:Indicators and Reagents; D007211:Indoles; D011108:Polymers; D014874:Water Pollutants, Chemical; C568283:polydopamine; D006108:Graphite; C034236:ferrous oxide; D001151:Arsenic
keywords: Adsorption; Arsenate; Arsenic; Graphene; Removal