Mesoporous cellulose nanofibers-interlaced PEDOT:PSS hybrids for chemiresistive ammonia detection

Article Nanoscience & Nanotechnology

Molecular ammonia sensing of PEDOT:PSS/nitrogen doped MXene Ti3C2T x composite film at room temperature

Jiyu Qiu et al.

Summary: This study successfully developed a gas sensor capable of detecting trace NH3 at room temperature by combining organic and inorganic materials, demonstrating good response speed and stability.

NANOTECHNOLOGY (2022)

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Article Engineering, Environmental

Conductive PEDOT:PSS/cellulose nanofibril paper electrodes for flexible supercapacitors with superior areal capacitance and cycling stability

Haishun Du et al.

Summary: In this study, mechanically strong and conductive PEDOT:PSS based bulk films were successfully prepared using Cellulose nanofibrils (CNF) as building blocks. The optimized PEDOT:PSS/CNP exhibited excellent flexibility, high tensile strength (72 MPa), and high electrical conductivity (66.67 S/cm), making it a promising electrode material for flexible supercapacitors. The symmetric supercapacitor assembled using PEDOT:PSS/CNP showed outstanding electrochemical performance with high specific capacitance and energy density, as well as remarkable cycling stability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Nanoscience & Nanotechnology

MXene Ti3C2Tx-Derived Nitrogen-Functionalized Heterophase TiO2 Homojunctions for Room-Temperature Trace Ammonia Gas Sensing

Yong Zhou et al.

Summary: In this study, nitrogen-functionalized heterophase TiO2 homojunctions (N-MXene) derived from MXene Ti3C2Tx were prepared and utilized as a sensing layer to detect trace NH3 gas at room temperature. The sensors exhibited improved detection limits and performance compared to existing MXene-involved reports, showing strong responses, sufficient recovery, and fast response/recovery speeds under humid conditions. The incorporation of nitrogen doping and TiO2 homojunctions played a key role in enhancing the performance of the sensors.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Analytical

Conductometric room temperature ammonia sensors based on titanium dioxide nanoparticles decorated thin black phosphorus nanosheets

Yanjie Wang et al.

Summary: The study utilized TiO2 nanoparticles decorated BP nanosheets as the sensing layer, achieving selective detection of 0.5-30 ppm NH3 at room temperature for the first time. The optimized BP-TiO2 sensors showed higher response, less baseline drift, shorter response/recovery times, and stronger long-term stability compared to pure BP counterparts.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Nanoscience & Nanotechnology

Flexible fabric gas sensors based on reduced graphene-polyaniline nanocomposite for highly sensitive NH 3 detection at room temperature

Guifang Luo et al.

Summary: A flexible fabric gas sensor for detecting sub-ppm-level NH3 was developed, showing fast response, long-term stability, and low detection limit. The high sensitivity of the sensor is mainly attributed to its distinctive 1D fiber structure and the p-p heterojunction between rGO nanosheets and PANI.

NANOTECHNOLOGY (2021)

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Article Chemistry, Analytical

Chemiresistive sensing of volatile ammonia over zinc oxide encapsulated polypyrrole based nanocomposite

Pratibha Singh et al.

Summary: This research manuscript demonstrates the chemiresistive sensing of volatile ammonia using a ZnO-en-PPy composite prepared with ferric chloride as a polymerizing agent. The composite showed optimized crystallinity, improved thermal stability, and responsive electrical conductivity against ammonia concentration. A portable resistive type ammonia sensor was successfully prepared with sensitivity range of 1 ppm-100 ppm, sensitivity 0.4947 k omega-ppm- 1, response time 45 s, recovery time 55 s, and stability for 90 days.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Ultrathin Nb2CTx nanosheets-supported polyaniline nanocomposite: Enabling ultrasensitive NH3 detection

Si Wang et al.

Summary: A novel NH3 sensor based on 2D niobium carbide MXene-supported polyaniline nanocomposite was successfully developed for ultrasensitive NH3 detection under humidity atmosphere. The sensor exhibited superior selectivity, high sensitivity, low detection limit, and good long-term reliability towards NH3 with specific RH levels. The improved sensing properties were attributed to the interaction between PANI and Nb2CTx, which effectively reduced the influence of humidity on sensor performance.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Nanoscience & Nanotechnology