Green Biosynthesis and Catalytic Application in Environmental Pollutants of Functionalized Pd-Ag Bimetallic Nanoparticle by Deinococcus Radiodurans Extracts
文献类型： 外文期刊
作者： Wang, Yuxian 1 ; Bai, Pengfei 2 ; Sheng, Xian 3 ; Qing, Molan 4 ; Yi, Yuanyang 5 ; Zhang, Zhidong 5 ; Jiang, Ling 1 ; Zhu, Liying 4 ;
作者机构： 1.Nanjing Tech Univ, Coll Food Sci & Light Ind, Nanjing 211816, Peoples R China
2.Nanjing Foreign Language Sch, Nanjing 210008, Peoples R China
3.Yixing Hosp Chinese Tradit Med, Yixing 214299, Peoples R China
4.Nanjing Tech Univ, Sch Chem & Mol Engn, Nanjing 211816, Peoples R China
5.Xinjiang Acad Agr Sci, Inst Appl Microbiol, Xinjiang Key Lab Special Environm Microbiol, Urumqi 830091, Peoples R China
6.Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
关键词：
期刊名称：CHEMISTRYSELECT （ 影响因子：2.0； 五年影响因子：2.0 ）
ISSN： 2365-6549
年卷期： 2024 年 9 卷 41 期
页码：
收录情况： SCI
摘要： Catalytic reduction of organic pollutants using metal nanoparticles (MNPs) as nanocatalyst is a promising approach. The widespread application of MNPs have led to an increase demand for their production. The green biosynthesis of MNPs using microbes is becoming increasingly important as they are benign and environmentally friendly. In this work, Deinococcus wulumuqiensis (D. wulumuqiensis) with high resistance to stresses was applied for the green preparation of different MNPs, including palladium nanoparticles (Pd NPs), silver nanoparticles (Ag NPs), and Pd-Ag bimetallic nanoparticles (Pd-Ag BNPs). The resultant MNPs exhibited a face-centered cubic structure, with average size of 6.70 (Pd NPs), 6.24 (Ag NPs), and 6.13 nm (Pd-Ag BNPs), respectively. FT-IR spectra indicated that the proteins and polysaccharides expressed by D. wulumuqiensis could potentially contributed to the formation of MNPs. The application of as-prepared biocatalyst in catalytic degradation of pollutant dyes demonstrated that Pd-Ag BNPs had greater degradation ability of 4-nitrophenol (95.1 %) and Rhodamine B (85.1 %) than monometallic nanoparticles. The pseudo-first-order kinetics results further indicated the superior catalytic ability of Pd-Ag BNPs, with rate constant of 0.450 +/- 0.009 (4-nitrophenol) and 1.54x10-2 min-1 (Rhodamine B), respectively. Thus, the present study confirms that D. wulumuqiensis represents a promising candidate for the biosynthesis of Pd-based nanoparticles with small size, which exhibited potential applications as bionanocatalyst in the degradation of water pollutants.
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