Recovery and in-situ reduction of precious metals by graphdiyne and graphdiyne oxide for antibacterial use  

作　　者：Ming-Ji Jiang Ya-Na Zhang Ling-Shen Meng Jing Kang Yong-Jun Li Alideertu Dong 

机构地区：[1]College of Chemistry and Chemical Engineering Inner,Mongolia University,Hohhot,010021,China [2]Engineering Research Center of Dairy Quality and Safety Control Technology,Ministry of Education,Inner Mongolia University,Hohhot,010021,China [3]Department of Chemistry,University of Zurich,CH-8057,Zurich,Switzerland [4]Laboratory of Organic Solids and Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,China

出　　处：《Rare Metals》2024年第4期1747-1757,共11页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22062017 and 22164015);Inner Mongolia Autonomous Region Program for Key Science and Technology(No.2020GG0161);Ordos City Program for Key Science and Technology(No.2022YY003);the Program of Higher-Level Talents of Inner Mongolia University(No.10000-22311201/035);the Research Program of science and technology at Universities of Inner Mongolia Autonomous Region(No.NJZZ23091);the Program for Innovative Research Team in Universities of Inner Mongolia Autonomous Region(No.NMGIRT2210)。

摘　　要：Based on the in-situ self-reduction and chemical stability,graphdiyne(GDY)and graphdiyne oxide(GDYO)are used as trapping agents to investigate the ability for recovering Au^(3+),Ag^+,and Pd^(2+)under different pH values and interfering ions.Under strong acidity at pH=1,these two agents demonstrate high select recovery towards the three precious metal ions,which could be insitu reduced to nanoparticles(NPs).In addition,superparamagnetic Fe_(3)O_(4)NPs are deposited on the surfaces of GDY and GDYO.The magnetic responses enable GDYFe_(3)O_(4)to recover precious metals conveniently and efficiently by the aid of an external magnetic field.This study also confirms the antibacterial activity of the as-recovered NPs deposited on GDY and GDYO against Escherichia coli and Staphylococcus aureus(1×10^(5)colony-forming unit(CFU)·mL^(-1)),and the antibacterial rates are 100%.This strategy of recovering precious metals and subsequently reusing to combat pathogens will be of great significance for environmental remediation and biomedical applications.

关 键 词：Graphdiyne In-situ reduction RECOVERY Precious metals ANTIBACTERIAL 

分 类 号：TG146.3[一般工业技术—材料科学与工程]