7 research outputs found
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Fully Transient 3D Origami Paper-Based Ammonia Gas Sensor Obtained by Facile MXene Spray Coating
Developing high-performance chemiresistive
gas sensors with mechanical
compliance for environmental or health-related biomarker monitoring
has recently drawn increasing research attention. Among them, two-dimensional
MXene materials hold great potential for room-temperature hazardous
gas (e.g., NH3) monitoring regardless of the complicated
fabrication process, insufficient 2D/3D flexibilities, and poor environmental
sustainability. Herein, a Ti3C2Tx MXene/gelatin ink was developed for patterning electrodes
through a facile spray coating. Particularly, the patterned Ti3C2Tx-based coating
exhibited good adhesion on the paper substrate against repeated peeling-off
and excellent mechanical flexibility against 1000 cyclic stretching.
The porous morphology of the coating facilitated the NH3 sensing ability. As a result, the 2D kirigami-shaped NH3 sensor exhibited a good response of 7% to 50 ppm of NH3 with detectable concentrations ranging from 5–500 ppm, decent
selectivity over interferences, etc., which could be well-maintained
even at 50% stretched state. In addition, with the help of mechanically
guided compressive buckling, 3D mesostructured MXene origamis could
be obtained, holding promise for detecting the coming direction and
height distribution of hazardous gas, e.g., the NH3. More
importantly, the as-fabricated MXene/gelatin origami paper could be
fully degraded in PBS/H2O2/cellulase solution
within 19 days, demonstrating its potential as a high-performance,
shape morphable, and environmentally friendly wearable gas sensor
Design of Hetero-Nanostructures on MoS<sub>2</sub> Nanosheets To Boost NO<sub>2</sub> Room-Temperature Sensing
Molybdenum
disulfide (MoS<sub>2</sub>), as a promising gas-sensing material,
has gained intense interest because of its large surface-to-volume
ratio, air stability, and various active sites for functionalization.
However, MoS<sub>2</sub>-based gas sensors still suffer from low sensitivity,
slow response, and weak recovery at room temperature, especially for
NO<sub>2</sub>. Fabrication of heterostructures may be an effective
way to modulate the intrinsic electronic properties of MoS<sub>2</sub> nanosheets (NSs), thereby achieving high sensitivity and excellent
recovery properties. In this work, we design a novel p–n hetero-nanostructure
on MoS<sub>2</sub> NSs using interface engineering via a simple wet
chemical method. After surface modification with zinc oxide nanoparticles
(ZnO NPs), the MoS<sub>2</sub>/ZnO hetero-nanostructure is endowed
with an excellent response (5 ppm nitrogen dioxide, 3050%), which
is 11 times greater than that of pure MoS<sub>2</sub> NSs. To the
best of our knowledge, such a response value is much higher than the
response values reported for MoS<sub>2</sub> gas sensors. Moreover,
the fabricated hetero-nanostructure also improves recoverability to
more than 90%, which is rare for room-temperature gas sensors. Our
optimal sensor also possesses the characteristics of an ultrafast
response time of 40 s, a reliable long-term stability within 10 weeks,
an excellent selectivity, and a low detection concentration of 50
ppb. The enhanced sensing performances of the MoS<sub>2</sub>/ZnO
hetero-nanostructure can be ascribed to unique 2D/0D hetero-nanostructures,
synergistic effects, and p–n heterojunctions between ZnO NPs
and MoS<sub>2</sub> NSs. Such achievements of MoS<sub>2</sub>/ZnO
hetero-nanostructure sensors imply that it is possible to use this
novel nanostructure in ultrasensitive sensor applications