Themed collection Gas sensing
Magnetic gas sensing: working principles and recent developments
In magnetic gas sensors, the change in the magnetic properties of the active materials is measured. In this review article, the working principles, fundamentals, recent developments, and future perspectives in magnetic gas sensors are reviewed.
Nanoscale Adv., 2021,3, 1551-1568
https://doi.org/10.1039/D0NA00826E
Micro/nanostructured gas sensors: the physics behind the nanostructure growth, sensing and selectivity mechanisms
Research focus on control growth of nanostructures, understanding of sensing mechanism through band model, LUMO energy, defect state density. Further, role of electrode for sensing and substrate for devices reliability has been discussed.
Nanoscale Adv., 2021,3, 73-93
https://doi.org/10.1039/D0NA00552E
Gas sensors using ordered macroporous oxide nanostructures
Summary and perspective on gas-sensing applications of ordered macroporous oxide nanostructures have been outlined in this review.
Nanoscale Adv., 2019,1, 1626-1639
https://doi.org/10.1039/C8NA00303C
Simple and rapid gas sensing using a single-walled carbon nanotube field-effect transistor-based logic inverter
We design a gas sensor by combining two SWCNT-FET devices in an inverter configuration enabling a better system miniaturization together with a reduction of power consumption and ease of data processing.
Nanoscale Adv., 2021,3, 1582-1587
https://doi.org/10.1039/D0NA00811G
Boron nanostructures obtained via ultrasonic irradiation for high performance chemiresistive methane sensors
Boron nanostructures obtained via a top-down approach can be efficiently used as the receptor in chemiresistive methane gas sensors.
Nanoscale Adv., 2020,2, 1837-1842
https://doi.org/10.1039/C9NA00749K
Carbon dots derived from algae as H2O2 sensors: the importance of nutrients in biomass
Effect of mineral nutrients in biomass was found to be crucial in the synthesized carbon dots, affecting their dispersibility, PL stability and crystallinity.
Nanoscale Adv., 2019,1, 2151-2156
https://doi.org/10.1039/C9NA00049F
Three-dimensional porous SERS powder for sensitive liquid and gas detections fabricated by engineering dense “hot spots” on silica aerogel
A 3D porous SERS powder was developed in this study. Highly sensitive and homogeneous SERS detections on liquid and gas have been achieved, demonstrating potential application for an artificial “nose”.
Nanoscale Adv., 2021,3, 1012-1018
https://doi.org/10.1039/D0NA00849D
Boosting the performance of NO2 gas sensors based on n–n type mesoporous ZnO@In2O3 heterojunction nanowires: in situ conducting probe atomic force microscopic elucidation of room temperature local electron transport
This study emphasis on the effect of n–n heterojunctions in ZnO@In2O3 nanowires on boosting NO2 sensing properties and elucidate the local electron transport properties during sensing process at room-temperature by in situ Conducting Probe Atomic Force Microscopy.
Nanoscale Adv., 2020,2, 4785-4797
https://doi.org/10.1039/D0NA00318B
Hydrogen gas sensing using aluminum doped ZnO metasurfaces
Hydrogen (H2) sensing is crucial in a wide variety of areas, such as industrial, environmental, energy and biomedical applications. In this work, aluminum-doped zinc oxide (AZO) nanotubes are reported for optical hydrogen sensing.
Nanoscale Adv., 2020,2, 3452-3459
https://doi.org/10.1039/D0NA00289E
Gelation of uranyl ions and gel-derived uranium oxide nanoparticles for gas sensing
Gas sensing uranium oxide nanoparticles were synthesized by microwave reaction based on uranyl-ethylene-glycol gel.
Nanoscale Adv., 2020,2, 2478-2484
https://doi.org/10.1039/D0NA00224K
A novel application of nanoporous gold to humidity sensing: a framework for a general volatile compound sensor
In this work, we leverage changes in the electronic properties of electrochemically dealloyed nanoporous gold to sense environmental humidity.
Nanoscale Adv., 2020,2, 777-784
https://doi.org/10.1039/D0NA00010H
Zirconia nanocomposites with carbon and iron(III) oxide for voltammetric detection of sub-nanomolar levels of methyl parathion
This study reports the synthesis of zirconia nanoparticles loaded on various carbon substrates, namely, reduced graphene oxide (Zr-r-GO), carbon nanotubes (Zr-CNT), and activated carbon (Zr-AC).
Nanoscale Adv., 2019,1, 4947-4954
https://doi.org/10.1039/C9NA00589G
Enhanced chemiresistive sensing performance of well-defined porous CuO-doped ZnO nanobelts toward VOCs
Due to the synergic effect between the electron depletion layer and the local hole accumulation layer at the p–n junctions of CuO|ZnO heterointerfaces, well-defined porous CuO-doped ZnO nanobelts exhibit an excellent sensing performance toward VOCs.
Nanoscale Adv., 2019,1, 3900-3908
https://doi.org/10.1039/C9NA00163H
Using evolved gas analysis – mass spectrometry to characterize adsorption on a nanoparticle surface
EGA-MS is presented as an experimental technique to characterize the surface of LnF3 nanoparticles as a complementary approach to surface chemistry.
Nanoscale Adv., 2019,1, 2740-2747
https://doi.org/10.1039/C9NA00098D
Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors
Quick and cost-effective fabrication of metal-halide nanostructure ozone sensors.
Nanoscale Adv., 2019,1, 2699-2706
https://doi.org/10.1039/C9NA00219G
Vapour sensing properties of graphene-covered gold nanoparticles
A corrugated graphene overlayer can increase the sensitivity and selectivity of local surface plasmon resonance-based vapour sensing with gold nanoparticles.
Nanoscale Adv., 2019,1, 2408-2415
https://doi.org/10.1039/C9NA00110G
CdS nanodroplets over silica microballs for efficient room-temperature LPG detection
An LPG sensor operating at RT was fabricated with the morphology of CdS nanodroplets over silica microballs.
Nanoscale Adv., 2019,1, 2382-2391
https://doi.org/10.1039/C9NA00053D
A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application
Fully printed, functionalized multi-walled carbon nanotube (FMWCNT)/hydroxyethyl cellulose (HEC) composite-based humidity sensor.
Nanoscale Adv., 2019,1, 2311-2322
https://doi.org/10.1039/C9NA00179D
Highly sensitive and room temperature detection of ultra-low concentrations of O3 using self-powered sensing elements of Cu2O nanocubes
The fundamental development of the design of novel self-powered ozone sensing elements, operating at room temperature, based on p-type metal oxides paves the way to a new class of low cost, highly promising gas sensing devices.
Nanoscale Adv., 2019,1, 2009-2017
https://doi.org/10.1039/C9NA00043G
Porous reduced graphene oxide (rGO)/WO3 nanocomposites for the enhanced detection of NH3 at room temperature
Incorporation of reduced graphene oxide (rGO) modifies the properties of semiconducting metal oxide nanoparticles and makes it possible to tune the surface area and pore size to optimum values, which in turn improves their gas sensing properties.
Nanoscale Adv., 2019,1, 1799-1811
https://doi.org/10.1039/C9NA00048H
The critical role of hydroxyl groups in water vapor sensing of graphene oxide
The present study provides a significant conceptual advance in graphene oxide based humidity sensors. It is found that sensor response is directly dependent on the amount of OH− groups. The proposed strategy to control OH− in this report can make significant impact on the development of future smart GO-based humidity sensors and should be applicable to other gases.
Nanoscale Adv., 2019,1, 1319-1330
https://doi.org/10.1039/C8NA00135A
A ZnO/porous GaN heterojunction and its application as a humidity sensor
A new humidity sensor based on a heterojunction of ZnO/PGAN is fabricated by a simple spraying process and the heterojunction can be directly applied to a diode-type humidity sensor.
Nanoscale Adv., 2019,1, 1232-1239
https://doi.org/10.1039/C8NA00243F
Rh-doped MoSe2 as a toxic gas scavenger: a first-principles study
Using first-principles theory, we investigated the most stable configuration for the Rh dopant on a MoSe2 monolayer, and the interaction of the Rh-doped MoSe2 (Rh-MoSe2) monolayer with four toxic gases (CO, NO, NO2 and SO2) to exploit the potential application of the Rh-MoS2 monolayer as a gas sensor or adsorbent.
Nanoscale Adv., 2019,1, 772-780
https://doi.org/10.1039/C8NA00233A
About this collection
This topical collection highlights nanoscale-based research on gas sensing recently published in Nanoscale Advances. The collection includes reviews exploring overall progress in gas sensing techniques and methods, and original research showcasing the latest thinking on the synthesis, applications and properties of gas sensors.