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Out-of-Substrate Ag–Ag2O Nanoplates: Surfactantless Photochemical Synthesis, Structural Evolution, and Mechanistic Study
journal contribution
posted on 2016-10-27, 12:03 authored by Meng Yin Li, Yao Quan Mao, Su Ke Yang, Ting Ting Dai, Hua Yang, Feng Feng, Tao Wu, Muzi Chen, Guo Qin Xu, Ji Hong WuTwo types of out-of-substrate
Ag–Ag2O nanoplates
were grown on a ZnO substrate through a surfactantless photochemical
method. First, the in situ photochemically synthesized Ag–Ag2O nanoparticles further crystallized into nanoplate-like superstructures
with rough surfaces and ragged edges. The nanoparticle-mediated crystallization
process was governed by a layer-by-layer crystallization mechanism.
Our study should help fundamentally understand the formation mechanism
of hierarchical nanoparticle superstructures. Under continuous UV
illumination, the hundreds of nanometer-sized rough nanoplates (i.e.,
the nanoplate-like superstructures of nanoparticles) can be transformed
into large smooth nanoplates with sizes of up to several micrometers.
The out-of-substrate Ag–Ag2O nanoplates/ZnO heterostructures
are potentially promising for photocatalytic applications.