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Bioinspired Unidirectional Silk Fibroin–Silver Compound Nanowire Composite Scaffold via Interface‐Mediated In Situ Synthesis
Author(s) -
Xue Jingzhe,
Gao HuaiLing,
Wang XiangYing,
Qian KunYu,
Yang Yuan,
He Tao,
He Chuanxin,
Lu Yang,
Yu ShuHong
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201907708
Subject(s) - fibroin , materials science , composite number , in situ , nanowire , silk , scaffold , composite material , nanotechnology , chemistry , biomedical engineering , engineering , organic chemistry
Bioinspired unidirectional porous materials have emerged as a unique class of scaffolds for the fabrication of macroscopic nanomaterial assemblies. However, these scaffolds usually serve simply as mechanical carriers to support various building blocks. Here, we report that the unidirectional silk fibroin scaffold can not only act as a carrier, but also serve as a controllable multiscale reactor to achieve the in situ synthesis of a Ag 3 PO 4 nanowire network anchored to ordered channels. Both the silk fibroin matrix and the interface play important roles in the nucleation and growth of the Ag 3 PO 4 nanowires. This unidirectional composite scaffold can be used for efficient water disinfection. Furthermore, the facile chemical transformation of Ag 3 PO 4 in the composite scaffold into Ag 2 S provided an analogous unidirectional composite silk scaffold that displays both efficient solar water evaporation effect and antibacterial activity. It is expected that this method can be extended to fabricate a series of silk‐based unidirectional composite scaffolds with varying functionalities.