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[1]张珩琳 杨 婧 周 浩 李 政 李 严 戴春晓 曲媛媛**.Cupriavidus metallidurans SHE 胞内提取物合成纳米金及其催化应用*[J].应用与环境生物学报,2019,25(02):1-8.[doi:10.19675/j.cnki.1006-687x.2018.07023]
 ZHANG Henglin,YANG Jing,ZHOU Hao,et al.Biosynthesis of gold nanoparticles by the cell-free extracts ofCupriavidusmetallidurans SHE and its catalytic applications *[J].Chinese Journal of Applied & Environmental Biology,2019,25(02):1-8.[doi:10.19675/j.cnki.1006-687x.2018.07023]
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Cupriavidus metallidurans SHE 胞内提取物合成纳米金及其催化应用*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年02期
页码:
1-8
栏目:
研究论文
出版日期:
2019-04-25

文章信息/Info

Title:
Biosynthesis of gold nanoparticles by the cell-free extracts ofCupriavidusmetallidurans SHE and its catalytic applications *
文章编号:
201807023
作者:
张珩琳 杨 婧 周 浩 李 政 李 严 戴春晓 曲媛媛**
工业生态与环境工程教育部重点实验室大连理工大学环境学院大连116024
Author(s):
ZHANG Henglin YANG Jing ZHOU Hao LI Zheng LI Yan DAI Chunxiao QU Yuanyuan**?
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology,Dalian 116024, China
关键词:
纳米金Cupriavidus metallidurans生物合成4-硝基苯酚偶氮染料
Keywords:
Gold nanoparticleCupriavidus metalliduransBiosynthesis4-NitrophenolAzo dyes
DOI:
10.19675/j.cnki.1006-687x.2018.07023
摘要:
近年来,纳米金 ( AuNPs) 凭借其在电化学和光学方面独特的性能,在催化、环境污染物的降解以及环境修复等方面成为了研究的热点。相比较传统的合成方法,生物法合成纳米金具有过程简单、无毒、环保、成本较低等优势。除此之外,生物法合成的纳米金颗粒具有尺寸均一、单分散性好且生物相容性好的特性,受到人们的广泛关注。本实验利用Cupriavidus metalliduransSHE胞内提取物合成纳米金,通过研究得出在该实验范围内的最适反应条件为:胞内提取物浓度为500 mg/L,HAuCl4浓度为1 mmol/L,pH为7,反应时间为7天。TEM图像表明纳米金颗粒主要为球形和伪球形,平均粒径为14.3 nm;通过FTIR分析结果推测提取物中的羟基、氨基、羧基等官能团参与了纳米金的稳定过程。经验证,在上述条件下合成的纳米金对4-硝基苯酚具有较好的催化还原活性,其催化速率常数k为5.98×10-4 s -1;且该纳米金能催化脱色多种偶氮染料。本研究表明Cupriavidus metallidurans SHE 能绿色合成尺寸均一,分散性良好的纳米金,且该纳米金在催化还原硝基芳烃污染物和偶氮染料方面具有潜在的应用价值。(图4 表1 参27)
Abstract:
Gold nanoparticles ( AuNPs) with their unique properties in electrochemistry and photology h ave been widely used in catalysis, degradation of pollutants, environmental modification etc.. Compared with the conventional synthesis methods, biosynthesis of AuNPs is simpler, cleaner, non-toxic, cost effective and eco-friendly. Furthermore, biosynthesi zed AuNPs ha ve attracted more attention due to the advantages of uniform particle size, single dispersion and the better biological capacity. In this research, cell-free extract of Cupriavidus metallidurans SHE was used to synthesize AuNPs. The optimal conditions were 500 mg/L cell-free extract, 1 mmol/L HAuCl4, pH 7, and 7 days. TEM images showed that the AuNPs were pseudospherical and spherical with an average size of 14.3 nm. FTIR analysis showed that a group of hydroxyl, amino and carboxyl may have played a role in the stability process. Investigation of catalytic properties proved that the AuNPs could serve as a highly efficient catalyst for 4-nitrophenol reduction with the reaction rate constant k of 5.98×10 -4 s -1. Also, it had the potential in azo dye decolorization. In a nutshell, this study showed that Cupriavidus metallidurans SHE could green synthesize AuNPs with good dispersion and the AuNPs had potential application in the catalytic reduction of 4-NP and azo dyes.

相似文献/References:

[1]裴晓芳,沈文丽,由胜男,等.Trichosporon montevideense WIN提取物合成纳米金及其对硝基芳烃的催化特性[J].应用与环境生物学报,2017,23(03):409.[doi:2016.06004]
 PEI Xiaofang,SHEN Wenli,YOU Shengnan,et al.Biosynthesis of gold nanoparticles by the cell-free extracts of Trichosporon?montevideense WIN for catalytic reduction of nitroaromatics[J].Chinese Journal of Applied & Environmental Biology,2017,23(02):409.[doi:2016.06004]

备注/Memo

备注/Memo:
收稿日期: 2018-07-16 接受日期Accepted: 2018-08-20*哈尔滨工业大学城市水资源与水环境国家重点实验室开放课题(ESK201529)资助 **通讯作者(E-mail: qyy@dlut.edu.cn)点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-11-14