Search results
Search for "environmental monitoring" in Full Text gives 37 result(s) in Beilstein Journal of Nanotechnology.
Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors
Beilstein J. Nanotechnol. 2019, 10, 565–577, doi:10.3762/bjnano.10.58
- to exposure for humans [18]. In environmental monitoring applications, nitrogen dioxide should be detected in the 20 to 200 ppb range. Some authors have reported the detection of NO2 at such low concentrations using sensors employing carbon nanotubes [31][32]. In addition, sensors can be employed as
Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials
Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202
- applications in numerous areas, including healthcare, energy storage, biotechnology, environmental monitoring, and defence/security. Their enhanced specific surface area, superior mechanical properties, nanoporosity and improved surface characteristics (in particular, uniformity and stability) have made them
Metal oxide nanostructures: preparation, characterization and functional applications as chemical sensors
Beilstein J. Nanotechnol. 2017, 8, 1205–1217, doi:10.3762/bjnano.8.122
- oxidizing and a reducing gas interesting for environmental monitoring). Moreover, we have integrated metal oxide nanowires into an electronic nose and proved its ability in a real case study, more specifically the detection of water contamination. Results and Discussion Preparation of metal oxide
- dioxide, according to the raw estimation from the power-law fitting. However, such high concentrations are not interesting for environmental monitoring, being far above the air quality requirements [25]. Considering both target gases, Nb2O5-based sensors exhibit the lowest performance. One explanation
Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles
Beilstein J. Nanotechnol. 2017, 8, 592–603, doi:10.3762/bjnano.8.64
- detection in environmental monitoring. TEM images of electrochemically synthesized core–shell A) Au NPs and B) Pd NPs. Schematic view of the two-pole chemiresistor based on a MWCNT network functionalized with metal NPs. XPS core level spectrum of A) Au 4f and B) Pd 3d on functionalized MWCNTs. SEM images of
Sensitive detection of hydrocarbon gases using electrochemically Pd-modified ZnO chemiresistors
Beilstein J. Nanotechnol. 2017, 8, 82–90, doi:10.3762/bjnano.8.9
- detection for environmental monitoring. In the last years, various techniques have been used for HC gas detection [6][7][8][9]. However, they still have some limitations such as the need for expensive instruments, time-consuming procedures, complicated pre-treatments and periodical maintenance [10][11][12
Hydrophilic silver nanoparticles with tunable optical properties: application for the detection of heavy metals in water
Beilstein J. Nanotechnol. 2016, 7, 1654–1661, doi:10.3762/bjnano.7.157
- devices, nanobiotechnology and nanomedicine. In particular, from the environmental monitoring perspective, sensors based on silver nanoparticles are in great demand because of their antibacterial and inexpensive synthetic method. In the present study, we synthesized AgNPs in water phase using silver
- ][12], energy [13][14][15], optoelectronics [16][17] and biomedicine [18] to sensors [19][20]. A very promising field of application is chemical sensing, which includes gas detection, safety and environmental monitoring [21][22][23][24][25]. Moreover, the need for developing highly sensitive and
Graphene-enhanced plasmonic nanohole arrays for environmental sensing in aqueous samples
Beilstein J. Nanotechnol. 2016, 7, 1564–1573, doi:10.3762/bjnano.7.150
- environmental monitoring providing important features such as real time measurements, high sensitivity and label-free assay [8]. The detection of highly diluted concentrations and small molecules (<200 Da) remains challenging within SPR sensing [9]. For (bio)analytical applications the sensitivity needs to be
NO gas sensing at room temperature using single titanium oxide nanodot sensors created by atomic force microscopy nanolithography
Beilstein J. Nanotechnol. 2016, 7, 1044–1051, doi:10.3762/bjnano.7.97
- recent years, gas sensors have been widely used in a variety of fields, such as medical diagnosis [1][2], environmental monitoring [3] and combustion emission control [4]. Among all types of gas sensors, resistor-type gas sensors based on semiconducting metal oxide nanomaterials [5][6][7][8] are more
- fabrication of titanium oxide nanowire (NW) gas sensors [25][26]. NO gas sensing at low concentrations is beneficial for human health [1][2] and environmental monitoring [3]. Various types of metal oxide nanomaterials have been utilized for NO or NO2 gas sensing, e.g., SnO2 [12][15][16][17], ZnO [13][14][17
Chemiresistive/SERS dual sensor based on densely packed gold nanoparticles
Beilstein J. Nanotechnol. 2015, 6, 2498–2503, doi:10.3762/bjnano.6.259
- sensors are chemiresistors, which are sensitive electrical devices capable of detecting (bio)chemicals by simply monitoring electrical resistance. They require simple DC circuitry, and are therefore ideal for developing wearable/portable devices for protection from chemical exposure, or for environmental
- monitoring. Assemblies of gold NPs were recently proposed as chemiresistor sensors, exhibiting reliable responses to the analyzed compounds [4]. In most cases very small particles were used (3–7 nm), functionalized with specific ligands that facilitate their assembly into thin nanoparticle films through
Simulation tool for assessing the release and environmental distribution of nanomaterials
Beilstein J. Nanotechnol. 2015, 6, 938–951, doi:10.3762/bjnano.6.97
- . In this regard, various environmental impact assessment (EIA) frameworks have been proposed [6], which all require knowledge of the potential environmental distribution of ENMs in addition to their potential toxicological effects. However, reported ENM source release rates, environmental monitoring
- organics. These organics adsorb onto ambient particles [20][21] and thus their transport behavior is governed by the particle phase as is the case with ENMs [9][12]. Simulation results have demonstrated excellent agreement with environmental monitoring data to within a factor of 2 or better [9], which is
Highly NO2 sensitive caesium doped graphene oxide conductometric sensors
Beilstein J. Nanotechnol. 2014, 5, 1073–1081, doi:10.3762/bjnano.5.120
- and environmental monitoring [12]. Theoretical [13][14] and experimental [15][16][17][18][19] studies have revealed that functionalization of graphene can improve significantly its gas sensing performance [20]. The presence of dopants or defects in the graphene lattice can increase the adsorption
Functionalised zinc oxide nanowire gas sensors: Enhanced NO2 gas sensor response by chemical modification of nanowire surfaces
Beilstein J. Nanotechnol. 2012, 3, 368–377, doi:10.3762/bjnano.3.43
- investigated for practical applications such as the detection of gas leaks and the environmental monitoring of gaseous pollutants. Since the earliest reports in this field, research efforts were focussed on improving gas response, selectivity, and sensor stability, and on their practical use, yet further
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