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Transportable Mononuclear Metal Atoms as Building Blocks for Bottom‐up Material Fabrication: Pt 1 (0) and Au 1 (0) Atoms in Stock Solutions
Author(s) -
Li Huixiang,
Liang Changhui,
Gao Pan,
Hou Guangjin,
Liu Kairui,
Liu Wei,
Jiang Qike,
Bai Shi,
Zhang Z. Conrad
Publication year - 2020
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202000193
Subject(s) - solvent , metal , materials science , x ray photoelectron spectroscopy , fabrication , ethylene glycol , crystallography , chemistry , chemical engineering , organic chemistry , metallurgy , medicine , alternative medicine , pathology , engineering
Premade and readily transportable mononuclear zero‐valent metal atoms in stock solvents offer the potential capability for bottom‐up designable metallic material fabrication. This work demonstrates a potentially universal and practical strategy to prepare weakly shielded mononuclear metal atoms in a volatile solvent, which also constitutes a strippable ligand to the metal atoms. Herein, M 1 (0) (M=Pt, Au) atoms are prepared by reducing H 2 PtCl 6 and HAuCl 4 with ethanol in ethylene glycol diethyl ether (EGDE) under mild temperatures. The diether oxygens of EGDE, H + , and Cl − coordinating to the M 1 (0) atoms, make the M 1 (0) atoms stable in the solvent under low pH. However, the M 1 (0) atoms can be released either by evaporation of HCl and EGDE or through neutralization of the HCl with a base. The premade M 1 (0) atoms can be used as primary building blocks to construct designable materials. To demonstrate a potential application, the M 1 (0) atoms are conveniently transported onto the surface of TiO 2 through impregnation followed by mild heating. The atomic dispersion and reduced state of the metal atoms are well preserved, as verified by HAADF‐STEM images, XPS, and DRIFT spectroscopy.