title: One-step fabrication of multifunctional composite polyurethane spider-web-like nanofibrous membrane for water purification.
abstract: A stable silver-doped fly ash/polyurathene (Ag-FA/PU) nanocomposite multifunctional membrane is prepared by a facile one-step electrospinning process using fly ash particles (FAPs). Colloidal solution of PU with FAPs and Ag metal precursor was subjected to fabricate nanocomposite spider-web-like membrane using electrospinning process. Presence of N,N-dimethylformamide (solvent of PU) led to reduce silver nitrate into Ag NPs. Incorporation of Ag NPs and FAPs through electrospun PU fibers is proven through electron microscopy and spectroscopic techniques. Presence of these NPs on PU nanofibers introduces several potential physicochemical properties such as spider-web-like nano-neeting for NPs separation, enhanced absorption capacity to remove carcinogenic arsenic (As) and toxic organic dyes, and antibacterial properties with reduce bio-fouling for membrane filter application. Preliminary observations used for above-mentioned applications for water treatment showed that it will be an economically and environmentally friendly nonwoven matrix for water purification. This simple approach highlights new avenues about the utilization of one pollutant material to control other pollutants in scalable and inexpensive ways.
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea; Department of Engineering Science and Humanities, Institute of Engineering, Pulchowk Campus, Tribhuvan University, Kathmandu, Nepal. Electronic address: hempant@jbnu.ac.kr.
authors.forename: Hem Raj
authors.initials: HR
authors.lastname: Pant
authors.affiliation: Division of Mechanical Design Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Han Joo
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Mahesh Kumar
authors.initials: MK
authors.lastname: Joshi
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Bishweshwar
authors.initials: B
authors.lastname: Pant
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Chan Hee
authors.initials: CH
authors.lastname: Park
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Jeong In
authors.initials: JI
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea. Electronic address: kshui@hanyang.ac.kr.
authors.forename: K S
authors.initials: KS
authors.lastname: Hui
authors.affiliation: Department of Bio-nano System Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea; Division of Mechanical Design Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea. Electronic address: chskim@jbnu.ac.kr.
authors.forename: Cheol Sang
authors.initials: CS
authors.lastname: Kim
mesh_terms: D000327:Adsorption; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D011140:Polyurethanes
keywords: Electrospinning; Fly ash:polyurethane; Nano-netting; Nanomembrane