title: Preparation and properties of silver nanoparticles loaded in activated carbon for biological and environmental applications.
abstract: Silver nanoparticles colloid has been prepared by a modified sonoelectrodeposition technique in which a silver plate was used as the source of silver ions. This technique allows producing Ag nanoparticles with the size of 4-30 nm dispersed in a non-toxic solution. The Ag nanoparticles were loaded in a high surface activated carbon produced from coconut husk, a popular agricultural waste in Vietnam by thermal activation. The surface area of the best activated carbon is 890 m(2)/g. The presence of Ag nanoparticles does not change significantly properties of the activated carbon in terms of morphology and methylene blue adsorption ability. The Ag nanoparticle-loaded activated carbon shows a good antibacterial activity against Escherichia coli with very low minimal inhibitory concentration of 16 μg/ml and strong As(V) adsorption. The materials are potential for prevention and treatment of microbial infection and contamination for environmental applications.
authors.affiliation: Center for Materials Science, Hanoi University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, Viet Nam.
authors.forename: Quoc Tuan
authors.initials: QT
authors.lastname: Tran
authors.forename: Van Son
authors.initials: VS
authors.lastname: Nguyen
authors.forename: Thi Kim Dung
authors.initials: TK
authors.lastname: Hoang
authors.forename: Hoang Luong
authors.initials: HL
authors.lastname: Nguyen
authors.forename: Thu Thuy
authors.initials: TT
authors.lastname: Bui
authors.forename: Thi Van Anh
authors.initials: TV
authors.lastname: Nguyen
authors.forename: Dinh Hoa
authors.initials: DH
authors.lastname: Nguyen
authors.forename: Hoang Hai
authors.initials: HH
authors.lastname: Nguyen
mesh_terms: D000327:Adsorption; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002244:Carbon / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods; D004926:Escherichia coli / Q000378:metabolism; D053768:Metal Nanoparticles / Q000737:chemistry*; D008751:Methylene Blue / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning / Q000379:methods; D046529:Microscopy, Electron, Transmission / Q000379:methods; D036103:Nanotechnology / Q000379:methods*; D012834:Silver / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D012834:Silver; D002244:Carbon; D008751:Methylene Blue