SnSe nanosheet arrays film for trace NO2 detection at room temperature

Yang, Wenlong; Zhao, Chengjiu; Du, Bin; Wu, Rongliang; Lai, Xiaofang; He, Yong; Jian, Jikang

doi:10.1016/j.snb.2022.132407

Cited by 12 publications

(9 citation statements)

References 54 publications

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“…Typically, as the sample content rises, the specific surface area and adsorption sites increase, which promotes the gas sensing reaction. If the sample content further increases beyond the appropriate value, the process of carrier transfer from the sensing materials surface to the electrodes will be hindered, resulting in a decrease in sensor response . It can be found that the DMMP sensor obtained from 15 μL of dispersion has the highest response compared to other sensors.…”

Section: Resultsmentioning

confidence: 98%

“…If the sample content further increases beyond the appropriate value, the process of carrier transfer from the sensing materials surface to the electrodes will be hindered, resulting in a decrease in sensor response. 32 It can be found that the DMMP sensor obtained from 15 μL of dispersion has the highest response compared to other sensors. Henceforth, the sensors prepared by 15 μL of dispersion were selected to evaluate their sensing behavior.…”

Section: ■ Experimental Sectionmentioning

confidence: 87%

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Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

et al. 2023

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The development of room-temperature chemiresistive gas sensors with low limit of detection, high sensitivity, and selectivity for dimethyl methylphosphonate (DMMP) detection remains a challenge. Herein, a synergy of the two intermolecular hydrogen bond-promoted approach was proposed to fabricate a room-temperature DMMP sensor with enhanced performances. As a proof of concept, ternary p-hexafluoroisopropanol phenyl (HFIP) functionalized polypyrrole-reduced graphene oxide hybrids (HFIP-PPy-rGO) were rationally designed. During the sensing process, rGO serves as a conductive carrier, ensuring that the sensors operate at room temperature, and both HFIP and PPy act as adsorption sites for DMMP through hydrogen bonding interactions. As expected, the HFIP-PPy-rGO sensor exhibits high selectivity and sensitivity to DMMP. Besides, the HFIP-PPy-rGO sensor also possesses excellent linear response to DMMP and long-term stability. Experimental results and quartz crystal microbalance measurements prove that the specific recognition of DMMP is realized by forming two intermolecular hydrogen bonds between HFIP and DMMP, as well as PPy and DMMP. Additionally, the introduction of HFIP groups also contributes to adjusting device conductivity, enhancing signal conversion function. To put the DMMP sensor into potential practical application, the obvious sensing response to different DMMP concentrations in soil was confirmed, and a wireless detection system was built to realize real-time monitoring of DMMP concentrations in the surroundings. Overall, this study provides a facile and practical solution for improving the sensing performance of room-temperature sensors based on the hydrogen bond theory.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Experimental Sectionmentioning

confidence: 87%

Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

et al. 2023

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“…SnSe NS and BP electrodes were synthesized using a vacuum thermal evaporation method on the substrate of a flexible CC, which is similar to the method given in a previous report. 38 Before the experiment, the CC was ultrasonically cleaned for 15 min with acetone, ethanol, and deionized water successively and dried at 60 °C for 12 h. SnSe powder was purchased from Alfa Aesar (99.999%), which was used as the evaporation source. The CC in the shape of a disk with a 1 cm 2 size was used as the substrate.…”

Section: Methodsmentioning

confidence: 99%

SnSe Nanosheet Array on Carbon Cloth as a High-Capacity Anode for Sodium-Ion Batteries

Yang,

Chen,

Yin

et al. 2023

ACS Appl. Mater. Interfaces

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Binder-free electrodes offer a great opportunity for developing highperformance sodium-ion batteries (SIBs) aiming at the application in energy storage devices. Tin selenide (SnSe) is considered to be a promising anode material for SIBs owing to its high theoretical capacity (780 mA h g −1 ). In this work, a SnSe nanosheet array (SnSe NS) on a carbon cloth is prepared using a vacuum thermal evaporation method. The as-prepared SnSe NS electrode does not have metal current collectors, binders, or any conductive additives. In comparison with the electrode of SnSe blocky particles (SnSe BP), the SnSe NS electrode delivers a higher initial charge capacity of 713 mA h g −1 at a current density of 0.1C and maintains a higher charge capacity of 410 mA h g −1 after 50 cycles. Furthermore, the electrochemical behaviors of the SnSe NS electrode are determined via pseudocapacitance and electrochemical impedance spectroscopy measurements, indicating a faster kinetic process of the SnSe NS electrode compared to that of the SnSe BP. Operando X-ray diffraction measurements prove that the SnSe NS exhibits better phase reversibility than the SnSe BP. After the cycles, the SnSe NS electrode still maintains its particular structure. This work provides a feasible method to prepare SnSe nanostructures with high capacity and improved sodium ion diffusion ability.

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“…With the increase of fossil combustion, industrial waste gas, and vehicle exhaust emissions, nitrogen dioxide (NO 2 ) has emerged as a source of pollution, and the development of excellent NO 2 sensors plays a key role in monitoring its leakage. 1,2 At present, the methods commonly used to detect NO 2 include gas chromatography, liquid chromatography, electrochemical sensing, optical acoustic sensors, etc. However, the above sensors have some problems such as a large volume, slow response, high power consumption, and expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Cu-MOF-Derived C-Doped CuO/Cu₂O Hollow Nano-Octahedrons for Room-Temperature NO₂ Sensing at the ppb Level

Ma,

Yang,

et al. 2024

ACS Appl. Nano Mater.

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P-type semiconductors [copper oxide (CuO) and cuprous oxide (Cu 2 O)] have been widely researched as good gas sensing materials due to their unique oxygen adsorption properties. In this work, C-doped CuO/Cu 2 O hollow nano-octahedrons have been prepared by thermal decomposition of the Cu-based metal−organic framework ([Cu 3 (BTC) 2 ] n ). The CuO and Cu 2 O nanoparticles form nano-octahedron heterojunctions by a close packing mode. A large number of active heterojunction sites were exposed, which significantly increased the adsorbed oxygen (O 2 − ) content. Meanwhile, doping C in the lattice of the heterojunction effectively reduces the band gap of CuO/Cu 2 O and promotes the chemical reaction of the target gas on the surface of the material. Density functional theory calculations indicate that the CuO/Cu 2 O heterojunction has strong adsorption ability for NO 2 . Electrochemical impedance spectroscopy further reveals that C-doped CuO/Cu 2 O hollow nano-octahedrons-40 min heterojunction has the best electron transport performance. The sensors have good gas sensing response (22.88−50 ppm) and selectivity to nitrogen dioxide (NO 2 ) at room temperature (28 °C). In addition, the sensor has extremely low detection, which can detect parts per billion level NO 2 (20.50% to 100 ppb). It is expected to provide a reference for the development of a room-temperature NO 2 sensor.

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SnSe nanosheet arrays film for trace NO2 detection at room temperature

Cited by 12 publications

References 54 publications

Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

SnSe Nanosheet Array on Carbon Cloth as a High-Capacity Anode for Sodium-Ion Batteries

Cu-MOF-Derived C-Doped CuO/Cu₂O Hollow Nano-Octahedrons for Room-Temperature NO₂ Sensing at the ppb Level

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SnSe nanosheet arrays film for trace NO2 detection at room temperature

Cited by 12 publications

References 54 publications

Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

Synergy of Two Intermolecular Hydrogen Bonds Promotes Highly Sensitive and Selective Room-Temperature Dimethyl Methylphosphonate Sensing: A Case of rGO-Based Gas Sensors

SnSe Nanosheet Array on Carbon Cloth as a High-Capacity Anode for Sodium-Ion Batteries

Cu-MOF-Derived C-Doped CuO/Cu2O Hollow Nano-Octahedrons for Room-Temperature NO2 Sensing at the ppb Level

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Product

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Cu-MOF-Derived C-Doped CuO/Cu₂O Hollow Nano-Octahedrons for Room-Temperature NO₂ Sensing at the ppb Level