Preparation of novel magnetic noble metals supramolecular composite for the reduction of organic dyes and nitro aromatics  

作　　者：Aadil Nabi Chishti Zhiyuan Ma Junjie Zha Muhammad Ahmad Peisen Wang Jagadis Gautam Ming Chen Lubin Ni Guowang Diao 

机构地区：[1]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002,China [2]College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225002,China

出　　处：《Chinese Chemical Letters》2023年第8期189-195,共7页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 21971221, 21401162, 21773203);the Yangzhou University Interdisciplinary Research Foundation for Chemistry Discipline of Targeted Support (No. yzuxk202010);‘Qing Lan Project’ in Colleges and Universities of Jiangsu Province;HighLevel Entrepreneurial and Innovative Talents Program of Yangzhou University;the Lvyangjinfeng Talent Program of Yangzhou

摘　　要：By considering the exceptional properties of supramolecular,noble metals(NM)and magnetic nanoparticles(NPs),we successfully synthesized a novel magnetic,metals and supramolecular composite.Briefly,the Fe_(3)O_(4)@SiO_(2)core-shell spheres were first modified with gold(Au)and palladium(Pd)NPs and then with mono-6-thio-β-cyclodextrin(SH-β-CD).The synthesized Fe_(3)O_(4)@SiO_(2)-Au-Pd@SH-β-CD nanocomposite shows a good magnetic response(42.3 emu/g).The nanocomposite showed good performance for the reductive degradation of rhodamine B(RhB)and 4-nitrophenol(4-NP).The calculated rate constant(k)values for the reduction of 4-NP and RhB were 0.062±0.02 s^(−1)and 0.027±0.01 s^(−1),respectively.The high catalytical performance was supposed to be due to the host-guest interaction ofβ-CD and also due to the NM synergic effect.The nanocomposite structural and chemical morphology was investigated by various spectroscopic techniques.Furthermore,the catalyst was recycled six times and it maintains morphology,chemical nature,and high magnetic behavior,as demonstrated by FTIR and TEM analysis of the recycled catalyst.These results demonstrate a very efficient,cost-effective,and recyclable catalyst in the field of catalysis technology development.

关 键 词：Fe_(3)O_(4)@SiO_(2)-Au-Pd@SH-β-CD composite CATALYSIS REDUCTION DEGRADATION Synergistic effect 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ426[化学工程] X703[环境科学与工程—环境工程]