柳广飞

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:环境学院

学科:环境工程. 环境科学

办公地点:环境学院711室

联系方式:0411-84706252

电子邮箱:guangfeiliu@dlut.edu.cn

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Accelerating Effect of Bio-Reduced Graphene Oxide on Decolorization of Acid Red 18 by Shewanella algae

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论文类型:期刊论文

发表时间:2014-09-01

发表刊物:APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY

收录刊物:SCIE、EI、PubMed、Scopus

卷号:174

期号:2

页面范围:602-611

ISSN号:0273-2289

关键字:Bio-reduction; Azo dye; Bio-reduced; Graphene; Graphene oxide

摘要:In this study, the effects of bio-reduced graphene oxide (BRGO) on the bio-reduction of Acid Red 18 (AR 18) by Shewanella algae were first investigated, and a possible mechanism of BRGO-mediated AR 18 bio-decolorization was proposed. The prepared BRGO was characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffractometer (XRD), infrared spectroscopy (IR), Raman spectra, and transmission electron microscope (TEM), respectively. Moreover, electrochemical experiment demonstrated that BRGO is of good electrical conductivity. AR 18 bio-decolorization could be enhanced in dose-dependent manner of BRGO. The maximum increase in AR 18 removal efficiency was observed at a dose of 0.075 g L-1 BRGO. Under the same conditions, BRGO could also improve the decolorization rates of Acid Red 88, Acid Red 27, and Acid Red 73. During decolorization, the formation of BRGO and cells composite was observed, which is beneficial for transferring electrons from cells to BRGO. In addition, BRGO could accelerate the bio-decolorization of AR 18 under saline conditions (2-7 %). These findings indicate that BRGO can accelerate the electrons transfer from cells to azo dyes.