One‐Pot Synthesis and Hierarchical Assembly of Hollow Cu2O Microspheres with Nanocrystals‐Composed Porous Multishell and Their Gas‐Sensing Properties
By Huigang Zhang, Qingshan Zhu, Yang Zhang, Y. Wang, L. Zhao, Bin Yu. 2007
493 citations recorded by the source corpus.
Hierarchical assembly of hollow microstructures is of great scientific and practical value and remains a great challenge. This paper presents a facile and one‐pot synthesis of Cu2O microspheres with multilayered and porous shells, which were organized by nanocrystals. The time‐dependent experiments revealed a two‐step organization process, in which hollow microspheres of Cu2(OH)3NO3 were formed first due to the Ostwald ripening and then reduced by glutamic acid, the resultant Cu2O nanocrystals were deposited on the hollow intermediate microspheres and organized into finally multishell structures. The special microstructures actually recorded the evolution process of materials morphologies and microstructures in space and time scales, implying an intermediate‐templating route, which is important for understanding and fabricating complex architectures. The Cu2O microspheres obtained were used to fabricate a gas sensor, which showed much higher sensitivity than solid Cu2O microspheres.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/9b521a2655cbe887098e94cef8672a6a40c517af
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In Electrical and Electronic Engineering
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Citations in the corpus
- Gas Sensors Based on Copper Oxide Nanomaterials: A Review (2021, methodology): “) hydrothermal 200 formaldehyde † 5–500 × [88] CuO nanoparticles calcination of precursor 150–300 ethanol 5–1000 × [89] Cu2O octahedral nanoparticles wet chemical 170–290 benzene † 5–1000 × [90] porous CuO particles calcination of precursor 230 triethylamine † 5–1000 × [91] hollow Cu2O polyhedrons w”