3 research outputs found
Formation of SiO<sub>2</sub>‑Encapsulated Ag Nanoparticles on SiO<sub>2</sub> Nanofibers and Their Application as Robust, Flexible Pressure Sensor Working under High Temperatures
Lightweight, flexible pressure sensors working under
high temperatures
have intrigued great research interest owing to their potential in
firefighting, aerospace technology, and automotive and petroleum industries.
Here, we propose a strategy to prepare SiO2 shell-coated
Ag nanoparticles on SiO2 nanofiber membranes (SNFs), which
prohibit nanoparticle migration and fusion. The reduction treatment
of the nanofiber membrane promotes the in situ reduction of AgNO3 into Ag seeds, which further grow as Ag nanoparticles in
the following wet-chemical treatment. Then, a protective silica layer
is fabricated on the Ag nanoparticles, which effectively prevents
the nanoparticles’ migration and fusion; we propose that metal–support
interaction (MSI) may help to form the silica coatings on the Ag nanoparticles.
The as-formed Ag nanoparticles with a SiO2 coating layer
are sinter-resistant and show much higher thermal stability than bare
Ag nanoparticles on the nanofibers. The as-assembled pressure sensors
using these SNFs as active materials can continuously work at 350
°C without performance decay. After annealing the SNF at 600
°C for 2 h, the SNF can still maintain its performance as a pressure
sensor. The high-sensitivity, high-temperature-resistant, and robust
SNF may provide a platform for unconventional pressure sensor construction.
The strategies used in this study may bring insights into both the
design and application of these sinter-resistant nanostructures
Additional file 1 of MicroRNA-191 regulates oral squamous cell carcinoma cells growth by targeting PLCD1 via the Wnt/β-catenin signaling pathway
Additional file 1
Additional file 1 of Long non-coding RNA MIDEAS-AS1 inhibits growth and metastasis of triple-negative breast cancer via transcriptionally activating NCALD
Additional file 1. Supplementary figures and tables