Facet-Dependent Electrochemical Behavior of Au-Pd Core@Shell Nanorods for Enhanced Hydrogen Peroxide Sensing

Xu, Yanchao1,4,5; Zhang, Dantong1,2; Wu, Qiong3; Chang, Xin3; Wang, Feng1; Yu, Shoujun1; Zhang, Jiaxin1; Wang, Zhanlong1; Xu, Zhen1; Wu, Tianzhun1

2023-10-06

10.1021/acsanm.3c01590

ACS APPLIED NANO MATERIALS   Impact Factor & Quartile

2574-0970

Development of advanced sensing systems capable of trace analysis for small biomolecules is promising yet challenging in both physiological and pathological fields. Nanostructures with a specific surface where the reaction process happens directly govern the overall sensing performance because of the facet-dependent effects on the atomic level. Using core-shelled Au@Pd bimetallic nanorods as the platform, we herein studied the impacts of surface atomic arrangement on the performance of electrochemical H2O2 biosensing. Specifically, Au@Pd with a (100)-facet (Au@Pd-100) exhibited more than 3 times higher sensitivities than Au@Pd with a (111)-facet in H2O2 detection. Based on the theoretical calculations, this strong facet-dependence was attributed to the efficient charge transfer from Au core to Pd (100) shell and favorable intermediate adsorption energy over (100)-facet. The Au@Pd-100 exhibited great H2O2 sensing performance with high sensitivity (up to 383.0 mu A mM(-1) cm(ECSA)(-2)), relatively low detection limit (similar to 1.0 mu M) and wide applicable detection range (1.0 to 1.75 x 10(3) mu M), which also ensured the high efficiency of Au@Pd-100 sensor in real-time monitoring of H2O2 released from the cancer cells. In depth interpretation of facet-dependent effect in this work not only highlights the significant role of the surface engineering in performance improvement but also can offer guidelines for the fabrication of efficient biosensors.

nonenzyme biosensors electrochemical detection hydrogen peroxide facet dependence Au@Pd bimetallic

SCI

English

Corresponding

Guangdong Basic and Applied Basic Research Foundation["31800871","82171082","12202461"] ; National Natural Science Foundation of China[2022M710157] ; China Postdoctoral Science Foundation[E25420]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001082568500001

AMER CHEMICAL SOC

Web of Science

1.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Inst Adv Mat Sci & Engn, Shenzhen Inst Adv Technol, Multiscale Crystal Mat Res Ctr, Shenzhen 518055, Peoples R China
3.Jilin Univ, China Japan Union Hosp, Nanomed & Translat Res Ctr, Key Lab Pathobiol,Minist Educ, Changchun 130033, Jilin, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Dept Chem, Shenzhen 518055, Peoples R China
5.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China

Xu, Yanchao,Zhang, Dantong,Wu, Qiong,et al. Facet-Dependent Electrochemical Behavior of Au-Pd Core@Shell Nanorods for Enhanced Hydrogen Peroxide Sensing[J]. ACS APPLIED NANO MATERIALS,2023,6(20).

Xu, Yanchao.,Zhang, Dantong.,Wu, Qiong.,Chang, Xin.,Wang, Feng.,...&Wu, Tianzhun.(2023).Facet-Dependent Electrochemical Behavior of Au-Pd Core@Shell Nanorods for Enhanced Hydrogen Peroxide Sensing.ACS APPLIED NANO MATERIALS,6(20).

Xu, Yanchao,et al."Facet-Dependent Electrochemical Behavior of Au-Pd Core@Shell Nanorods for Enhanced Hydrogen Peroxide Sensing".ACS APPLIED NANO MATERIALS 6.20(2023).