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首页> 外文期刊>Nanotechnology >Microbial synthesis of Pd-Pt alloy nanoparticles using Shewanella oneidensis MR-1 with enhanced catalytic activity for nitrophenol and azo dyes reduction
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Microbial synthesis of Pd-Pt alloy nanoparticles using Shewanella oneidensis MR-1 with enhanced catalytic activity for nitrophenol and azo dyes reduction

机译：利用肺萘二聚合金纳米粒子的微生物合成，含有增强的硝基苯酚和氮杂染料的增强催化活性

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摘要

Bimetallic nanoparticles (NPs) often exhibit improved catalytic performance due to the electronic and spatial structure changes. Herein, a novel green biosynthesis method for Pd-Pt alloy NPs using Shewanella oneidensis MR-1 was proposed. The morphology, size and crystal structure of Pd-Pt alloy NPs were studied by a suite of characterization techniques. Results showed Pd-Pt alloy NPs were successfully synthesized inside and outside the cell. The biosynthesized Pd-Pt alloy NPs were polycrystalline and face-centered-cubic structure with the particle size ranged from 3-40 nm. Furthermore, the catalytic experiment demonstrated that the Pd-Pt alloy NPs exhibited the highest performance for the catalytic reduction of nitrophenol and azo dyes compared with the as-synthesized Pd and Pt monometallic NPs. This enlarged catalytic activity resulted from the synergistic effect of Pd and Pt element. Thereby, this paper provided a simple biosynthesis method for producing bimetallic alloy nanocatalyst with superior activity for contaminant degradation.
机译：由于电子和空间结构的变化，双金属纳米颗粒（NPS）通常表现出改善的催化性能。在此，提出了一种使用Shewanella Inidensis MR-1的PD-Pt合金NP的新型绿色生物合成方法。通过套件表征技术研究了PD-PT合金NP的形态，尺寸和晶体结构。结果显示PD-Pt合金NPS在细胞内外成功合成。生物合成的PD-Pt合金NPS是多晶和面为中心的立方结构，粒度范围为3-40nm。此外，催化实验证明，与合成的Pd和Pt单金属NPS相比，Pd-Pt合金NPS表现出催化还原硝基苯酚和偶氮染料的最高性能。这种扩大的催化活性是Pd和Pt元素的协同​​作用。由此，本文提供了一种简单的生物合成纳米催化剂，其具有优异的污染物降解活性的双金属合金纳米催化剂。

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  • 来源
    《Nanotechnology》 |2019年第6期|共11页
  • 作者

    Xu Hang; Xiao Yong; Xu Meiying; Cui Hao; Tan Ling; Feng Ningning; Liu Xinxing; Qiu Guanzhou; Dong Haigang; Xie Jianping;

  • 作者单位

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Guangdong Inst Microbiol State Key Lab Appl Microbiol Southern China Guangzhou 510070 Guangdong Peoples R China;

    Kunming Inst Precious Met State Key Lab Adv Technol Comprehens Utilizat Pla Kunming 650106 Yunnan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

    Kunming Inst Precious Met State Key Lab Adv Technol Comprehens Utilizat Pla Kunming 650106 Yunnan Peoples R China;

    Cent S Univ Sch Minerals Proc &

    Bioengn Changsha 410083 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    biosynthesis; Pd-Pt alloy nanoparticles; Shewanella oneidensis MR-1; catalytic reduction; 4-nitrophenol; azo dyes;

    机译：生物合成;Pd-Pt合金纳米粒子;肾内联六甲酸1;催化还原;4-硝基苯酚;偶氮染料;

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