CdS nanowires with PbS nanoparticles surface coating as room temperature liquefied petroleum gas sensor

A novel composite of CdS nanorods growing on a polyaniline-Cd2+ particles surface with excellent formaldehyde gas sensing properties at low temperature

“…9 PbS/CdS nanowires with a nano-heterojunction show good sensing properties to liqueed petroleum gas (LPG) at room temperature due to the advantages of adsorbing and de-adsorbing LPG molecules easily by penetrating from top to bottom. 10 Besides inorganic semiconducting sensors, organic conductive polymers such as polyaniline (PANI) based sensors also have been well established due to the facile synthesis, simple acid/base doping/de-doping chemistry and high gas sensing response. 11 Polyaniline-based electrochemical gas sensors have shown fast responses to various organic vapors also have been widely used to detect combustible, toxic gases such as LPG and toluene and triethylamine vapor.…”

CdS nanodroplets over silica microballs for efficient room-temperature LPG detection

“…Many successful efforts have been made to achieve a low operating temperature using a variety of nanomaterials; their hybrid structures and composite materials have even been demonstrated to work at room temperature (RT). [6][7][8][9][10][11] This particular feature is typically observed in CdS nanocomposites or CdS heterostructures. Nevertheless, the other sensing parameters, viz., the response and recovery times, sensitivity, and detection limit depend on other composite or heterostructure materials.…”

“…Enormous efforts have been made to develop a gas sensor with high sensitivity, high selectivity, short response and recovery times and most importantly a low operating temperature using diverse materials to detect noxious, explosive, inammable and pollutant gases. [5][6][7][8][9][10] However, the invention of semiconductor-based sensing devices with identical desired parameters to identify hazardous gases for a healthy ambience is still an open challenge for researchers. Many successful efforts have been made to achieve a low operating temperature using a variety of nanomaterials; their hybrid structures and composite materials have even been demonstrated to work at room temperature (RT).…”

Effect of annealing temperature and graphene concentrations on photovoltaic and NIR-detector applications of PbS/rGO nanocomposites

“…PbS nanostructures can also be used as a multiple exciton generation (MEG), in which the impact of a single photon produces two or more excitons. This phenomenon has raised the possibility of quantum dot based solar cells with high photo-conversion efficiency and photonic device applications as well as gas sensor [4][5][6][7]. However, efficiency of these nanostructures for optoelectronic applications is very important that should be taken into account.…”