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Facile Synthesis of Gold Nanoparticles with Alginate and Its Catalytic Activity for Reduction of 4-Nitrophenol and H2O2 Detection

by Xihui Zhao 1,2,*, Zichao Li 3, Yujia Deng 1, Zhihui Zhao 1,2, Xiaowen Li 1 and Yanzhi Xia 2,3,*
1
School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
2
Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Bionbased Materials, Qingdao University, Qingdao 266071, China
3
State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Eleni Skaltsa
Materials 2017, 10(5), 557; https://doi.org/10.3390/ma10050557
Received: 1 April 2017 / Revised: 12 May 2017 / Accepted: 15 May 2017 / Published: 19 May 2017
Gold nanoparticles (AuNPs) were synthesized using a facile solvothermal method with alginate sodium as both reductant and stabilizer. Formation of AuNPs was confirmed by UV-vis spectroscopic analysis. The synthesized AuNPs showed a localized surface plasmon resonance at approximately 520–560 nm. The AuNPs were characterized using transmission electron microscopy, X-ray diffraction and dynamic light scattering. Transmission electron microscopy revealed that the AuNPs were mostly nanometer-sized spherical particles. Powder X-ray diffraction analysis proved the formation of face-centered cubic structure of Au. Catalytic reduction of 4-nitrophenol was monitored via spectrophotometry using AuNPs as catalyst, and further a non-enzymatic sensor was fabricated. The results demonstrated that AuNPs presented excellent catalytic activity and provided a sensitive response to H2O2 detection. View Full-Text
Keywords: gold nanoparticles; alginate; catalytic activity gold nanoparticles; alginate; catalytic activity
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MDPI and ACS Style

Zhao, X.; Li, Z.; Deng, Y.; Zhao, Z.; Li, X.; Xia, Y. Facile Synthesis of Gold Nanoparticles with Alginate and Its Catalytic Activity for Reduction of 4-Nitrophenol and H2O2 Detection. Materials 2017, 10, 557.

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