Shape-controlled assemblies of graphitic carbon nitride polymer for efficient sterilization therapies of water microbial contamination via 2D g-C 3 N 4 under visible light illumination.

Autor: Heo NS; Department of Chemical Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 402-751, Republic of Korea; Division of Electron Microscopic Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea., Shukla S; Department of Energy and Materials Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Seoul 04620, Republic of Korea., Oh SY; Department of Chemical Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 402-751, Republic of Korea., Bajpai VK; Department of Energy and Materials Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Seoul 04620, Republic of Korea., Lee SU; Department of Chemical and Biomolecular Engineering (BK21 plus program), KAIST, Daejeon 34141, Republic of Korea., Cho HJ; Reliability Assessment Center for Chemical Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea., Kim S; Department of Chemical Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 402-751, Republic of Korea., Kim Y; Division of Electron Microscopic Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea., Kim HJ; Division of Electron Microscopic Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea., Lee SY; Department of Chemical and Biomolecular Engineering (BK21 plus program), KAIST, Daejeon 34141, Republic of Korea., Jun YS; School of Applied Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea., Oh MH; Animal Production Research and Development Division, National Institute of Animal Science, Jeonju 54875, Republic of Korea., Han YK; Department of Energy and Materials Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Seoul 04620, Republic of Korea. Electronic address: ykenergy@dongguk.edu., Yoo SM; School of Integrative Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea. Electronic address: yooseun1@cau.ac.kr., Huh YS; Department of Chemical Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 402-751, Republic of Korea. Electronic address: yunsuk.huh@inha.ac.kr.
Jazyk: angličtina
Zdroj: Materials science & engineering. C, Materials for biological applications [Mater Sci Eng C Mater Biol Appl] 2019 Nov; Vol. 104, pp. 109846. Date of Electronic Publication: 2019 Jun 01.
DOI: 10.1016/j.msec.2019.109846
Abstrakt: Bacterial pathogens of water origin have potential public threats thus suggesting the need of developing efficient and sustainable water disinfection strategies from waterborne pathogens. We set out to synthesize different controlled morphologies of graphitic carbon nitride (g-C 3 N 4 ) polymer, evaluate their comparative effects on the generation of reactive oxygen species (ROS), and investigate potential applications in water purification systems. Characterization of the synthesized microstructures of g-C 3 N 4 , such as melamine-cyanuric acid (MCA)-based rosette-type, rod-type, 2D hexagonal, and 3D cubic mesoporous silica was accomplished using Fourier transform infrared (FT-IR), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffractometry (XRD), and transmission electron microscopy (TEM). The microbial inhibitory potential of 2D g-C 3 N 4 photocatalyst against waterborne Escherichia coli, Staphylococcus aureus, and Salmonella typhimurium was evaluated based on the effective activity of 2D g-C 3 N 4 upon visible light excitations. The microbicidal efficiency of 2D g-C 3 N 4 was evident within 30 min of visible light exposure via direct interaction, while other microstructures of g-C 3 N 4 demonstrated only slight antimicrobial effects after 120 min, with insufficient ROS generation. The antimicrobial and ROS-generating effects of 2D g-C 3 N 4 depended on the type and surface area of the synthesized 2D g-C 3 N 4 material. Considering its availability and excellent disinfection activity, 2D g-C 3 N 4 obtained from simple and convenient facile synthesis is a promising solar-driven photocatalyst for clearing microbial contamination from water.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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