Directional Growth of Quasi-2D CuO Monocrystals on RGO Membranes in Aqueous Environments

Overview

Journal iScience

Publisher Cell Press

Date 2022 Nov 21

PMID 36404919

Authors

Yimin Zhao

Quan Zhang

Jianbing Ma

Ruobing Yi

Lu Gou

Dexi Nie

Xiaona Han

Lihao Zhang

Yuetian Wang

Xintong Xu

Zhe Wang

Liang Chen

Ying Lu

Shengli Zhang

Lei Zhang

Affiliations

Soon will be listed here.

Abstract

The preparation technology of unconventional low-dimensional CuO monocrystals, which exhibit specific crystal planes and present significantly unique interfacial and physicochemical properties, is attracting increasing attention and interest. Herein, by integrating a high-temperature oxidation process under vacuum and a pure-water incubation process under ambient conditions, we propose the self-assembled growth and synthesis of quasi-two-dimensional CuO monocrystals on reduced graphene oxide (rGO) membranes. The prepared CuO crystals have a single (110) crystal plane, regular rectangular morphology, and potentially well conductivity. Experimental and theoretical results suggest that this assembly is attributed to the pre-nucleation clusters aggregation and directional attachment of Cu and O on the rGO membranes in aqueous environment and cation-π interactions between the (110) crystal plane of CuO and rGO surface. Our findings offer a potential avenue for the discovery and design of advanced low-dimensional single-crystal materials with specific interfacial properties in a pure aqueous environment.

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