Heterogeneous Cu_(x)O Nano‑Skeletons from Waste Electronics for Enhanced Glucose Detection  

作　　者：Yexin Pan Ruohan Yu Yalong Jiang Haosong Zhong Qiaoyaxiao Yuan Connie Kong Wai Lee Rongliang Yang Siyu Chen Yi Chen Wing Yan Poon Mitch Guijun Li 

机构地区：[1]Center on Smart Manufacturing,Division of Integrative Systems and Design,The Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong SAR 999077,People’s Republic of China [2]The Sanya Science and Education Innovation Park of Wuhan University of Technology,Sanya 572000,People’s Republic of China [3]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第11期554-568,共15页纳微快报（英文版）

基　　金：funded by the Hong Kong Research Grants Council(25201620/C6001-22Y);the Hong Kong Innovation Technology Commission(ITC)under project No.MHP/060/21;support of the State Key Laboratory of Advanced Displays and Optoelectronics Technologies at HKUST.

摘　　要：Electronic waste(e-waste)and diabetes are global challenges to modern societies.However,solving these two challenges together has been challenging until now.Herein,we propose a laser-induced transfer method to fabricate portable glucose sensors by recycling copper from e-waste.We bring up a laser-induced full-automatic fabrication method for synthesizing continuous heterogeneous Cu_(x)O(h-Cu_(x)O)nano-skeletons electrode for glucose sensing,offering rapid(<1 min),clean,air-compatible,and continuous fabrication,applicable to a wide range of Cu-containing substrates.Leveraging this approach,h-Cu_(x)O nanoskeletons,with an inner core predominantly composed of Cu_(2)O with lower oxygen content,juxtaposed with an outer layer rich in amorphous Cu_(x)O(a-Cu_(x)O)with higher oxygen content,are derived from discarded printed circuit boards.When employed in glucose detection,the h-Cu_(x)O nano-skeletons undergo a structural evolution process,transitioning into rigid Cu_(2)O@CuO nano-skeletons prompted by electrochemical activation.This transformation yields exceptional glucose-sensing performance(sensitivity:9.893 mA mM^(-1) cm^(-2);detection limit:0.34μM),outperforming most previously reported glucose sensors.Density functional theory analysis elucidates that the heterogeneous structure facilitates gluconolactone desorption.This glucose detection device has also been downsized to optimize its scalability and portability for convenient integration into people’s everyday lives.

关 键 词：Copper oxide Electron 3D tomography E-WASTE Glucose detection Electrochemical activation 

分 类 号：R313[医药卫生—基础医学] O657.1[理学—分析化学]