Noble metal@metal oxide semiconductor core@shell nano-architectures as a new platform for gas sensor applications

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76229-76248 ◽  
Author(s):  
Prabhakar Rai ◽  
Sanjit Manohar Majhi ◽  
Yeon-Tae Yu ◽  
Jong-Heun Lee
Keyword(s):  
Gas Sensor ◽  
Noble Metal ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Research Progress ◽  
Core Shell ◽  
Feature Article ◽  
Sensor Applications ◽  
Metal Metal ◽  
Recent Research Progress

This feature article focuses on recent research progress in noble metal@metal oxides core@shell NPs for gas sensor applications.

Plasmonic noble metal@metal oxide core–shell nanoparticles for dye-sensitized solar cell applications

2019 ◽  
Vol 3 (1) ◽  
pp. 63-91 ◽  
Author(s):  
Prabhakar Rai
Keyword(s):  
Metal Oxide ◽  
Noble Metal ◽  
Research Progress ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Feature Article ◽  
Dye Sensitized ◽  
Metal Metal ◽  
Core Shell Nanoparticles ◽  
Recent Research Progress

This feature article focused on recent research progress in plasmonic noble metal@metal oxide core–shell NPs for DSSC applications.

scholarly journals Field Study of Metal Oxide Semiconductor Gas Sensors in Temperature Cycled Operation for Selective VOC Monitoring in Indoor Air

Atmosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 647
Author(s):  
Tobias Baur ◽  
Johannes Amann ◽  
Caroline Schultealbert ◽  
Andreas Schütze
Keyword(s):  
Air Quality ◽  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Indoor Air ◽  
Ambient Air ◽  
Quantitative Agreement ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
High Temporal Resolution

More and more metal oxide semiconductor (MOS) gas sensors with digital interfaces are entering the market for indoor air quality (IAQ) monitoring. These sensors are intended to measure volatile organic compounds (VOCs) in indoor air, an important air quality factor. However, their standard operating mode often does not make full use of their true capabilities. More sophisticated operation modes, extensive calibration and advanced data evaluation can significantly improve VOC measurements and, furthermore, achieve selective measurements of single gases or at least types of VOCs. This study provides an overview of the potential and limits of MOS gas sensors for IAQ monitoring using temperature cycled operation (TCO), calibration with randomized exposure and data-based models trained with advanced machine learning. After lab calibration, a commercial digital gas sensor with four different gas-sensitive layers was tested in the field over several weeks. In addition to monitoring normal ambient air, release tests were performed with compounds that were included in the lab calibration, but also with additional VOCs. The tests were accompanied by different analytical systems (GC-MS with Tenax sampling, mobile GC-PID and GC-RCP). The results show quantitative agreement between analytical systems and the MOS gas sensor system. The study shows that MOS sensors are highly suitable for determining the overall VOC concentrations with high temporal resolution and, with some restrictions, also for selective measurements of individual components.

scholarly journals Surface modification of plasmonic noble metal–metal oxide core–shell nanoparticles

2019 ◽  
Vol 1 (12) ◽  
pp. 4578-4591 ◽  
Author(s):  
Somayeh Talebzadeh ◽  
Clémence Queffélec ◽  
D. Andrew Knight
Keyword(s):  
Surface Modification ◽  
Metal Oxide ◽  
Noble Metal ◽  
Molecular Ions ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Metal Metal ◽  
Comprehensive Survey ◽  
Core Shell Nanoparticles

A comprehensive survey on methods for surface modification of noble metal–metal oxide core–shell nanoparticles is presented and highlights various strategies for binding of molecules and molecular ions to core–shell nanoparticles.

Core-Shell Noble-Metal@Metal-Organic-Framework Nanoparticles with Highly Selective Sensing Property

2013 ◽  
Vol 125 (13) ◽  
pp. 3829-3833 ◽  
Author(s):  
Liangcan He ◽  
Yong Liu ◽  
Jingzhu Liu ◽  
Yansong Xiong ◽  
Jianzhong Zheng ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Organic Framework ◽  
Core Shell ◽  
Metal Metal ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Metal/Metal-Oxide Nanoclusters for Gas Sensor Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Ahmad I. Ayesh
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Recent Progress ◽  
Volume Ratio ◽  
Building Blocks ◽  
Special Focus ◽  
Gaseous Species ◽  
Sensor Applications ◽  
Metal Metal

The development of gas sensors that are based on metal/metal-oxide nanoclusters has attracted intensive research interest in the last years. Nanoclusters are suitable candidates for gas sensor applications because of their large surface-to-volume ratio that can be utilized for selective and rapid detection of various gaseous species with low-power consuming electronics. Herein, nanoclusters are used as building blocks for the construction of gas sensor where the electrical conductivity of the nanoclusters changes dramatically upon exposure to the target gas. In this review, recent progress in the fabrication of size-selected metallic nanoclusters and their utilization for gas sensor applications is presented. Special focus will be given to the enhancement of the sensing performance through the rational functionalization and utilization of different nanocluster materials.

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