title: Facile synthesis of BiOI in hierarchical nanostructure preparation and its photocatalytic application to organic dye removal and biocidal effect of bacteria.
abstract: Novel BiOI hierarchical nanostructures with porous architecture was prepared at room temperature by an economical, facile and rapid route. The coupling adsorption and degradation efficiency of rhodamine B (RhB), methylene blue (MB), and methyl orange (MO) could achieve 98.7%, 43.2%, 76.9% within 180min in the presence of BiOI, respectively. BiOI hierarchical nanostructures also exhibit excellent effective biocidal performances, and the disinfection rate of the typical biofouling bacteria Bacillus sp. and Pseudoalteromonas sp. could reach 99.9% and 99.8% in 60min, respectively. The circulate photocatalytic degradation of RhB experiment verified the good stability and reusability of BiOI hierarchical nanostructures. Based on active specie trapping experiments, the superoxide radicals (O2(-)) and holes (h(+)) were proved to be the main reactive species in the BiOI-based system. The obviously enhanced coupling adsorption and photocatalytic degradation performance of BiOI hierarchical nanostructures could be mainly attributed to the large surface area (64.5m(2)/g), negatively charged surface and the intrinsic electron structure. This study provides a new strategy to develop novel photocatalysts for water treatment and marine antifouling.
authors.affiliation: Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; University of Chinese Academy of Sciences, 19 (Jia) Yuquan Road, Beijing 100039, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Long
authors.affiliation: Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China. Electronic address: zhangdun@qdio.ac.cn.
authors.forename: Dun
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 18 Tianshui Middle Road, Lanzhou 730000, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Ju
authors.affiliation: Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Sun
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D001407:Bacillus / Q000187:drug effects*; D001729:Bismuth / Q000737:chemistry / Q000494:pharmacology*; D002384:Catalysis / Q000187:drug effects; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification*; D008826:Microbial Sensitivity Tests; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D055668:Photochemical Processes / Q000187:drug effects; D031161:Pseudoalteromonas / Q000187:drug effects*; D013499:Surface Properties
chemical_list: D000900:Anti-Bacterial Agents; D004396:Coloring Agents; D001729:Bismuth
keywords: Adsorption; Antifouling; BiOI; Dye removal; Visible light photocatalysis