Photothermal properties of Cu@polycarbonate composites with strong localized surface plasmon resonances  

作　　者：Fengyi Wang Jiangling He Junshan Hu Zhihui Chen Yumeng Shi Qing-Hua Xu 

机构地区：[1]SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology,International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education,Institute of Microscale Optoelectronics,Shenzhen University,Shenzhen 518060,China [2]Department of Chemistry,National University of Singapore,3 Science Drive 3,Singapore 117543,Singapore [3]College of Materials Science and Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Nano Research》2024年第9期8513-8520,共8页纳米研究（英文版）

基　　金：supported by the Ministry of Education,Singapore(Nos.R-143-000-A41-114 and MOE2018-T2-1-119);the National Natural Science Foundation of China(No.61874074);the Educational Commission of Guangdong Province(No.2016KZDXM008);the Shenzhen Peacock Plan(No.KQTD2016053112042971);the Fundamental Research Funds for the Central Universities(No.2022SCU12003);Science and Technology Project of Shenzhen(No.GJHZ20180928160407303);the Natural Science Foundation of Sichuan Province(No.2023NSFSC0334).

摘　　要：Copper is relatively low cost and highly abundant compared with the well-studied noble metals such as gold and silver.However,the poor plasmonic and high susceptibility towards oxidation limit the study of its optical properties and applications as well.Herein,copper nanoparticles@polycarbonate(Cu@PC)composites were prepared by using a facile one-step solvothermal method.The Cu@PC composites have strong localized surface plasmon resonances(LSPR)due to that the PC shell can induce the particles to form many-particles system with different particle numbers,which not only lead to overlap and hybridize of the LSPR modes,but also shift the LSPR away from the interband transitions,and the PC layer also prevents the oxidation of Cu nanoparticles.The photothermal conversion efficiency of Cu@PC composites reaches 41.1%under 808 nm continuous wave(CW)laser irradiation which is higher than previously reported Cu nanomaterials that have been reported.Meanwhile,the composites also have high photothermal stability.Moreover,interfacial evaporator is prepared by assembling the Cu@PC composites on scouring sponge as light absorption layer which has>92.8%absorption in entire solar spectrum range.Its seawater evaporation rate is 3.177 kg·m^(-2)·h^(-1)with a E_(evaporator)/E_(water)of 5.2.The high evaporation rate interfacial evaporator with low cost,simple,and scalable approach shows great application value in the field of photothermal evaporation.

关 键 词：Cu nanoparticles localized surface plasmon resonances(LSPR) PHOTOTHERMAL interfacial evaporation 

分 类 号：TB33[一般工业技术—材料科学与工程] O53[理学—等离子体物理]