成果归属作者：

于翔

成果归属机构：

材料科学与工程学院

作者：

Xu, Haipei ; Sun, Yibo ; Pei, Jingxuan ; Yu, Xiang ; Zhang, Jing

单位：

China Univ Geosci Beijing, Minist Educ Geol Carbon Storage & Low Carbon Utili, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmet Minerals & Sol, Beijing 100083, Peoples R China;Qilu Univ Technol, Adv Mat Inst, Shandong Acad Sci, Shandong Prov Key Lab High Strength Lightweight Me, Jinan 250014, Peoples R China

关键词：

NANOSTRUCTURES; NANOPARTICLES; OXIDE

摘要：

aminothiophenol (4-ATP) residues and accumulation in aquaculture/animal husbandry are becoming a serious threat to food safety. Development of highly sensitive metal-semiconductor surface-enhanced Raman scattering (SERS) substrates for the detection of 4-ATP is urgently needed. In this work, mesoporous Au-CuO substrate with dual super-hydrophilicity and efficient chemical enhancement is constructed for high-sensitivity SERS detection of 4-ATP. Mesoporous Au-CuO substrate is prepared by thermal decomposition. The super-hydrophilic substrate could mitigate droplet-induced "coffee ring" effect, thereby promoting rapid diffusion and uniform distribution of target molecules. Meanwhile, hybridizing gold nanoparticles (Au NPs) and CuO could enhance analyte polarization rate in that multi-channel photon-induced charge transfer between the target molecule and Au-CuO substrate. Mesoporous Au-CuO exhibited high sensitivity (10-8 M) and reproducibility (Relative standard deviation (RSD=6.06 %, n=11)) for crystal violet (CV) probe. The as-prepared substrate demonstrated reliable assay ability for 4-ATP with a detection limit of 10-7 M and a good reproducibility with RSD=3.33 % (n=11). Additionally, the substrate was not impacted by heavy metal ions in actual water environment. Trace residues of 4-ATP were still detected at concentrations as low as 10-7 M. Au-CuO substrate is expected to be a favorable candidate for the detection of 4-ATP residues in complex matrices.

基金：

Na- tional Natural Science Foundation of China [52302044]; Natural Science Foundation of Shandong Province [ZR2022QE121]; Talent Research Project of Qilu University of Technol- ogy (Shandong Academy of Sciences) [2023RCKY020]

语种：

英文

DOI：

10.1016/j.jallcom.2024.175198

来源：

JOURNAL OF ALLOYS AND COMPOUNDS,2024():.

出版日期：

2024-10-15

提交日期：

2024-07-17

引用参考：

Xu, Haipei; Sun, Yibo; Pei, Jingxuan; Yu, Xiang; Zhang, Jing. Mesoporous Au-CuO substrate with dual super-hydrophilicity and efficient chemical enhancement for 4-aminothiophenol SERS detection[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024():.