Three-dimensional porous SERS powder for sensitive liquid and gas detections fabricated by engineering dense “hot spots” on silica aerogel
Longkun Yang, Z. Ren, Meng Zhang, Yanli Song, Pan Li, Yun Qiu, Pingye Deng, Zhipeng Li
Abstract
and relative standard deviation as small as ∼13%. Robust calibration curves were obtained from the SERS data, which demonstrates the potential for the quantification analysis. Moreover, the powder shows extraordinary SERS stability than the conventional Ag nanostructures, which makes long term storage and convenient usage feasible. With all of these advantages, the porous SERS powder material can be extended to on-site SERS "nose" applications such as liquid and gas detections for chemical analysis, environmental monitoring, and anti-terrorism.
Topics & Concepts
AerogelMaterials sciencePorosityNanoparticleNanotechnologyNanostructurePorous mediumNanometreChemical stabilityChemical engineeringComposite materialEngineeringGold and Silver Nanoparticles Synthesis and ApplicationsGas Sensing Nanomaterials and SensorsBiosensors and Analytical Detection