Solvent-engineered time-dependent hydrochromic perovskite nanocrystals in wool keratin for multi-level encryption with distinguishable temporal keys

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163778 - 163778

Published: May 1, 2025

Language: Английский

Fluorescence Light‐Up Electrospun Membrane Incorporated with PbBr₂ as a Highly Selective Fluorescence Probe for the Detection of Cs+

Advanced Sensor Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 8, 2024

Abstract This study introduces a novel fluorescent light‐up electrospun membrane, integrating PbBr 2 , which serves as an exceptionally selective probe for the detection of cesium ions (Cs + ). Leveraging superior optical properties CsPbBr 3 perovskite nanocrystals (PNCs), researchers employ electrospinning technology to fabricate test strip, namely @polyacrylonitrile (PbBr @PAN) nanofiber membranes, capable swiftly detecting Cs in water merely by observing changes nanocrystals' luminescence with naked eye. By introduction NH 4 ‐modified montmorillonite (NH ‐MMT), ‐MT@PAN membranes is obtained. The selectivity and sensitivity can be further improved because ‐MMT endows hydrophilic property adsorption toward ions. membrane's fabrication simple, scalable, cost‐effective, high down 44 ppb. innovation enables efficient, on‐site monitoring critical environmental safety nuclear waste management.

Language: Английский

Stabilizing perovskite quantum dot oxygen sensors through ultra-long 2 mm horizontally aligned nanopores in anodic alumina oxide templates

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Perovskite quantum dots (PQDs) offer potential for gas sensing, though stability limits use. Johan et al . enhanced PQD with a horizontally aligned anodic alumina oxide template, maintaining fluorescence 3 weeks without change.

Language: Английский