Slowly Removing Surface Ligand by Aging Enhances the Stability of Pd Nanosheets toward Electron Beam Irradiation and Electrocatalysis

Zhang, Yu1,2,3,4; Han, Shaobo5; Zhu, Shangqian3; Chen, Ruhui6; Li, Tiehuai3; Lyu, Zhiheng6; Zhao, Ming6; Gu, Meng5; Shao, Minhua3; Xia, Younan1,2,6

2023-11-01

10.1002/anie.202314634

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   影响因子和分区

1433-7851

1521-3773

["Surface ligands play an important role in shape-controlled growth and stabilization of colloidal nanocrystals. Their quick removal tends to cause structural deformation and/or aggregation to the nanocrystals. Herein, we demonstrate that the surface ligand based on poly(vinylpyrrolidone) (PVP) can be slowly removed from Pd nanosheets (NSs, 0.93 +/- 0.17 nm in thickness) by simply aging the colloidal suspension. The aged Pd NSs show well-preserved morphology, together with significantly enhanced stability toward both e-beam irradiation and electrocatalysis (e.g., ethanol oxidation). It is revealed that the slow desorption of PVP during aging forces the re-exposed Pd atoms to reorganize, facilitating the surface to transform from being nearly perfect to defect-rich. The resultant Pd NSs with abundant defects no longer rely on surface ligand to stabilize the atomic arrangement and thus show excellent structural and electrochemical stability. This work provides a facile and effective method to maintain the integrity of colloidal nanocrystals by slowly removing the surface ligand.","We report an effective method to remove the surface ligand from Pd nanosheets by simply aging the sample in ethanol at room temperature. This slow process allows for atomic reconstruction without altering the sheet morphology. When exposed to e-beam irradiation or working as an electrocatalyst toward ethanol oxidation, the aged Pd nanosheets show enhanced stability.image"]

Catalysis Pd Nanosheets Stability Surface Ligand Surface Reconstruction

SCI ; EI

英语

NI论文

通讯

Research Grant Council[C6011-20G] ; null[CBET 2219546]

Chemistry

Chemistry, Multidisciplinary

WOS:001106859500001

WILEY-V C H VERLAG GMBH

20234715101214

Electrocatalysis ; Irradiation ; Ligands ; Morphology ; Nanocrystals ; Nanosheets ; Palladium ; Suspensions (fluids)

Precious Metals:547.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933 ; Crystalline Solids:933.1 ; Materials Science:951

CHEMISTRY

2-s2.0-85177569281

Web of Science

1.Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA
2.Emory Univ, Atlanta, GA 30332 USA
3.Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
4.East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China
5.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
6.Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

Zhang, Yu,Han, Shaobo,Zhu, Shangqian,et al. Slowly Removing Surface Ligand by Aging Enhances the Stability of Pd Nanosheets toward Electron Beam Irradiation and Electrocatalysis[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2023,62(52).

Zhang, Yu.,Han, Shaobo.,Zhu, Shangqian.,Chen, Ruhui.,Li, Tiehuai.,...&Xia, Younan.(2023).Slowly Removing Surface Ligand by Aging Enhances the Stability of Pd Nanosheets toward Electron Beam Irradiation and Electrocatalysis.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,62(52).

Zhang, Yu,et al."Slowly Removing Surface Ligand by Aging Enhances the Stability of Pd Nanosheets toward Electron Beam Irradiation and Electrocatalysis".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 62.52(2023).