Au/ CdS Core Shell Nanoparticles (Gold/Cadmium Sulfur, 99.9%, APS: 80-100nm, Metal Core/Metal Shell)

Au/ CdS Core-Shell Nanoparticles

Au/CdS core-shell nanoparticles are a type of composite nanomaterial that consists of a gold (Au) nanoparticle core surrounded by a cadmium sulfide (CdS) shell. This core-shell structure combines the unique properties of gold, such as its plasmonic behavior, chemical stability, and biocompatibility, with the photocatalytic and semiconducting properties of cadmium sulfide.

Applications:

Energy Conversion and Storage

Solar Cells: The plasmonic enhancement from gold can improve the light absorption in solar cells. The Au/CdS nanoparticles can be used in photovoltaic devices to increase the overall efficiency of solar energy conversion.

Photocatalytic Hydrogen Production: Au/CdS core-shell nanoparticles are used in photocatalytic hydrogen production for renewable energy applications, converting solar energy into hydrogen fuel by splitting water molecules.

Biosensing and Diagnostics

Surface-Enhanced Raman Spectroscopy (SERS): The plasmonic properties of the gold core can enhance Raman signals, making Au/CdS core-shell nanoparticles useful in SERS-based biosensing. This application is widely used for molecular detection, biomarker identification, and cancer diagnostics.

Optical Sensing: Au/CdS nanoparticles can be used in optical sensors to detect a wide range of analytes, such as gases, ions, and biological molecules, due to their tunable optical properties.

DNA Detection: The nanoparticles can be functionalized with specific DNA probes, making them useful in genetic detection and DNA-based biosensing applications.

Therapeutic and Biomedical Applications

Photothermal Therapy: The gold core can be used for photothermal therapy, where localized heating (via the plasmonic effect) is used to destroy cancer cells. The CdS shell can enhance the overall therapeutic effect by generating reactive oxygen species (ROS) when irradiated with light.

Drug Delivery: Au/CdS core-shell nanoparticles can serve as carriers for targeted drug delivery. The gold core offers stability and functionalization options, while the CdS shell can be engineered for controlled release of drugs, particularly for cancer treatment.

Electronics and Sensing

Nanoelectronics: Due to the electrical properties of gold and the semiconducting nature of CdS, Au/CdS nanoparticles can be used in nanoelectronic devices like transistors and memories, offering enhanced performance and miniaturization.

Chemical Sensors: The gold surface can be functionalized to enhance the sensitivity and selectivity of chemical sensors, while the CdS shell can be tuned for detection under specific light conditions.