Green synthesis,characterization,and catalytic application of a supported and magnetically isolable copper-iron oxide-sodium alginate  

作　　者：Elmira Kalantari Lucian Lucia Nathalie Lavoine 

机构地区：[1]Department of Forest Biomaterials,College of Natural Resources,North Carolina State University,Raleigh,NC 27695,United States [2]Department of Chemistry,College of Sciences,North Carolina State University,Raleigh,NC 27695,United States [3]State Key Laboratory of Biobased Materials&Green Papermaking,Qilu University of Technology/Shandong Academy of Sciences,Jinan 250353,China

出　　处：《Green Synthesis and Catalysis》2022年第2期179-184,共6页绿色合成与催化（英文）

基　　金：This work was funded by the 2019 Faculty Research and Professional Development award(No.2020–3069),a funding partnership between the Office of Research and Innovation and North Carolina State University.

摘　　要：Herein,we report a green and facile preparation and characterization procedure of copper nanoparticles stabilized on magnetically separable sodium alginate support(Cu NPs-Fe_(3)O_(4)-SAlg)using Silybum marianum seeds extract and investigate their catalytic reductive chemistry for reduction of environmental pollutants.Indeed,the phytochemical content of the plant extract are responsible to biosynthesis of copper(Cu)nanoparticles and their stabilization by functionalizing the surface of magnetic alginate.Characterization of the biocatalyst was undertaken with FT-IR,XPS,XRD and STEM equipped with EDS.A standard suite of model compounds on which the reductive chemistry was tested were 4-nitrophenol(4-NP),potassium hexacyanoferrate(K3[Fe(CN)6]),and a variety of organic dyes including Congo Red(CR).The as-synthesized Cu NPs-Fe_(3)O_(4)-SAlg catalyst was highly effective in reducing 4-NP to 4-aminophenol in water and in the presence of sodium borohydride as a reducing agent.Also,a high reduction performance was observed with CR and K3[Fe(CN)6]in presence of the Cu NPs-Fe_(3)O_(4)-SAlg catalyst.The catalyst acted within 190 and 35 s respectively,at room temperature in the presence of NaBH4.Thus,the Cu NPs-Fe_(3)O_(4)-SAlg catalyst is a highly efficient catalyst which is also reusable due to its magnetic nature.This work reports a green synthesis of a high-performance Cu NPs-Fe_(3)O_(4)-SAlg catalyst using an environmental friendly method for reduction of 4-NP,CR,and K3[Fe(CN)6]over a short time.

关 键 词：BIOCATALYST Green synthesis Sodium alginate Organic dyes Copper nanoparticles 

分 类 号：O64[理学—物理化学]