Multifunctional nanostructures of Au–Bi2O3 fractals for CO2 reduction and optical sensing

2020 ◽  
Vol 8 (22) ◽  
pp. 11233-11245 ◽  
Author(s):  
Thanh Tran-Phu ◽  
Rahman Daiyan ◽  
Zelio Fusco ◽  
Zhipeng Ma ◽  
Lina Raihana Abd Rahim ◽  
...  
Keyword(s):  
Fractal Structure ◽  
Gas Sensing ◽  
Optical Sensing ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Optical Gas Sensing ◽  
Multifunctional Nanostructures

Three-dimensional (3D) fractal structure of Au–Bi2O3 is fabricated and shows excellent multifunctional performance towards CO2 reduction and optical gas sensing.

Three-dimensional porous copper-decorated bismuth-based nanofoam for boosting electrochemical reduction of CO2 to formate

2021 ◽  
Author(s):  
Yingchun Zhang ◽  
Changsheng Cao ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
High Current ◽  
Porous Copper ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction ◽  
Wide Potential

Bismuth (Bi)-based nanomaterials are considered as the promising electrocatalysts for electrocatalytic CO2 reduction reaction (CO2RR), but it is challenging to achieve high current density and selectivity in a wide potential...

scholarly journals Design of a Dual-Mode Graphene-on-Microring Resonator for Optical Gas Sensing

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 56479-56485
Author(s):  
Jiaqi Wang ◽  
Xinying Zhang ◽  
Zhiwei Wei ◽  
Huabin Qiu ◽  
Yuzhi Chen ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Microring Resonator ◽  
Dual Mode ◽  
Optical Gas Sensing

scholarly journals Three-dimensional self-attaching perovskite quantum dots/polymer platform for efficient solar-driven CO2 reduction

2021 ◽  
Vol 17 ◽  
pp. 100358
Author(s):  
R. Cheng ◽  
C.-C. Chung ◽  
S. Wang ◽  
B. Cao ◽  
M. Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Perovskite Quantum Dots

Optical gas sensing using Langmuir-Blodgett films

1995 ◽  
Vol 3 (3-4) ◽  
pp. 257-262 ◽  
Author(s):  
L.S. Miller ◽  
A.M. McRoberts ◽  
D.J. Walton ◽  
D.A. Parry ◽  
A.L. Newton
Keyword(s):  
Gas Sensing ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Optical Gas Sensing

scholarly journals On-Chip Narrowband Thermal Emitter for Mid-IR Optical Gas Sensing

ACS Photonics ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1371-1380 ◽  
Author(s):  
Alexander Lochbaum ◽  
Yuriy Fedoryshyn ◽  
Alexander Dorodnyy ◽  
Ueli Koch ◽  
Christian Hafner ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Thermal Emitter ◽  
Optical Gas Sensing ◽  
On Chip

scholarly journals Three-dimensional platinum nanoparticle-based bridges for ammonia gas sensing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nishchay A. Isaac ◽  
Johannes Reiprich ◽  
Leslie Schlag ◽  
Pedro H. O. Moreira ◽  
Mostafa Baloochi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Response Times ◽  
High Surface ◽  
Three Dimensional ◽  
Performance Testing ◽  
Volume Ratio ◽  
Platinum Nanoparticle ◽  
Ammonia Gas ◽  
Lift Off

AbstractThis study demonstrates the fabrication of self-aligning three-dimensional (3D) platinum bridges for ammonia gas sensing using gas-phase electrodeposition. This deposition scheme can guide charged nanoparticles to predetermined locations on a surface with sub-micrometer resolution. A shutter-free deposition is possible, preventing the use of additional steps for lift-off and improving material yield. This method uses a spark discharge-based platinum nanoparticle source in combination with sequentially biased surface electrodes and charged photoresist patterns on a glass substrate. In this way, the parallel growth of multiple sensing nodes, in this case 3D self-aligning nanoparticle-based bridges, is accomplished. An array containing 360 locally grown bridges made out of 5 nm platinum nanoparticles is fabricated. The high surface-to-volume ratio of the 3D bridge morphology enables fast response and room temperature operated sensing capabilities. The bridges are preconditioned for ~ 24 h in nitrogen gas before being used for performance testing, ensuring drift-free sensor performance. In this study, platinum bridges are demonstrated to detect ammonia (NH3) with concentrations between 1400 and 100 ppm. The sensing mechanism, response times, cross-sensitivity, selectivity, and sensor stability are discussed. The device showed a sensor response of ~ 4% at 100 ppm NH3 with a 70% response time of 8 min at room temperature.

Hierarchical three-dimensional copper selenide nanocubes microelectrodes for improved carbon dioxide reduction reaction

2021 ◽  
Author(s):  
Rajasekaran Elakkiya ◽  
Govindhan Maduraiveeran
Keyword(s):  
Carbon Dioxide ◽  
High Performance ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Value Added ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Earth Abundant ◽  
Carbon Dioxide Co2 ◽  
Co2 Reduction Reaction

Design of high-performance and Earth-abundant electrocatalysts for electrochemical carbon dioxide (CO2) reduction reaction (CO2RR) into fuels and value-added chemicals offers an emergent pathway for environment and energy sustainable concerns. Herein,...

A facile method for preparation of porous nitrogen-doped Ti Ti3C2Tx MXene for highly responsive acetone detection at high temperature

2021 ◽  
pp. 2151043
Author(s):  
Zijing Wang ◽  
Fen Wang ◽  
Angga Hermawan ◽  
Jianfeng Zhu ◽  
Shu Yin
Keyword(s):  
Gas Sensor ◽  
Recovery Time ◽  
Gas Sensing ◽  
Three Dimensional ◽  
Gas Sensitivity ◽  
Nitrogen Doped ◽  
Dimensional Network ◽  
Potential Applications ◽  
Response And Recovery ◽  
Acetone Detection

Porous nitrogen-doped Ti3C2T[Formula: see text] MXene (N-TCT) with a three-dimensional network structure is synthesized via a simple sacrifice template method and then utilized as an acetone gas sensor. By introducing nitrogen atoms as heteroatoms into Ti3C2T[Formula: see text] nanosheets, some defects generate around the doped nitrogen atoms, which can greatly improve the surface hydrophilicity and adsorption capacity of Ti3C2T[Formula: see text] Mxene nanosheets. It resulted in the enhanced gas sensitivity, achieving a response value of about 36 ([Formula: see text]/[Formula: see text] × 100%) and excellent recovery time (9s) at 150[Formula: see text]C. Compared with the pure Ti3C2T[Formula: see text]-based gas sensor (381/92s), the response and recovery time are both obviously improved, and the response value increased by 3.5 times. The gas-sensing mechanism of the porous N-TCT is also discussed in detail. Based on the excellent gas sensitivity of porous N-TCT for highly responsive acetone detection at high temperatures, the strategy of nitrogen-doped two-dimensional nanomaterials can be extended to other nanomaterials to realize their potential applications.

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