Effect of the dispersants on the performance of fuel cell type CO sensor with Pt–C/Nafion electrodes

Guan, Yu; Dai, Mingjun; Liu, Tong; Liu, Yingwei; Liu, Fangmeng; Liang, Xishuang; Suo, Hui; Sun, Peng

doi:10.1016/j.snb.2016.02.011

Cited by 28 publications

(15 citation statements)

References 41 publications

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“…The peak at 10° disappeared with the formation of the various nanocomposites, thus indicating that GO was reduced to RGO [38]. The diffraction peaks at around 39.8°, 46.3°, and 67.8° for PDDA-Pt/RGO were associated with the (111), (200), and (220) facets of the Pt nanoparticles, respectively [39,40]. In addition, peaks at 38.1°, 44.1°, 64.4°, and 77.3° for PDDA-Ag/RGO were attributed to the reflections on the (111) (200), (220), and (311) planes of Ag, respectively.…”

Section: Characterization Of Pdda-auptag/rgo Nanocompositesmentioning

confidence: 98%

A Non-Enzymatic Sensor Based on Trimetallic Nanoalloy with Poly (Diallyldimethylammonium Chloride)-Capped Reduced Graphene Oxide for Dynamic Monitoring Hydrogen Peroxide Production by Cancerous Cells

Jiao

Pan

Liu

et al. 2019

Sensors

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Catching cancer at an early stage is necessary to make it easier to treat and to save people's lives rather than just extending them. Reactive oxygen species (ROS) have sparked a huge interest owing to their vital role in various biological processes, especially in tumorigenesis, thus leading to the potential of ROS as prognostic biomarkers for cancer. Herein, a non-enzymatic biosensor for the dynamic monitoring of intracellular hydrogen peroxide (H 2 O 2 ), the most important ROS, via an effective electrode composed of poly (diallyldimethylammonium chloride) (PDDA)-capped reduced graphene oxide (RGO) nanosheets with high loading trimetallic AuPtAg nanoalloy, is proposed. The designed biosensor was able to measure H 2 O 2 released from different cancerous cells promptly and precisely owing to the impressive conductivity of RGO and PDDA and the excellent synergistic effect of the ternary alloy in boosting the electrocatalytic activity. Built upon the peroxidase-like activity of the nanoalloy, the developed sensor exhibited distinguished electrochemical performance, resulting in a low detection limit of 1.2 nM and a wide linear range from 0.05 µM to 5.5 mM. Our approach offers a significant contribution toward the further elucidation of the role of ROS in carcinogenesis and the effective screening of cancer at an early stage.It has been proven that reactive oxygen species (ROS), including superoxide (O 2− ), hydrogen peroxide (H 2 O 2 ), hydroxyl radicals, and peroxynitrite, are messenger molecules, which can turn various biological processes on and off [6]. Balanced ROS metabolism increases antioxidant ability, thereby establishing a barrier against tumorigenesis [7,8]. However, DNA damage caused by ROS results in genomic instability and altered gene expression, while ROS-mediated signaling pathways also drive cell proliferation and apoptosis suppression, thus promoting tumor formation [9,10]. Among the ROS, H 2 O 2 has sparked huge interest in anticancer therapies as not only is it the main substance in the cellular response to oxidative stress, but it is also able to pass through cell membranes over a relatively long lifetime. In addition, cancer cells have metabolic and signaling aberrations, and thus exhibit an enhanced H 2 O 2 level that differs from that in normal cells [11,12]. Therefore, the measurement of intracellular H 2 O 2 could be of great value in clarifying its role in oncogenesis and exploring advanced therapeutic strategies for cancer and other ROS-related diseases.Although various analytical techniques for measuring H 2 O 2 , such as spectrophotometry and chemiluminescence, have been developed, they still suffer drawbacks such as low detection limits and complex processing when faced with the challenge of achieving detection limits in the nanomolar range in living cells [13,14]. In this regard, electrochemical techniques with high sensitivity and simplicity to improve the timely detection of H 2 O 2 in vivo have gained increasing attention. Enzymes like horseradish peroxidase have been widely us...

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Section: Characterization Of Pdda-auptag/rgo Nanocompositesmentioning

confidence: 98%

A Non-Enzymatic Sensor Based on Trimetallic Nanoalloy with Poly (Diallyldimethylammonium Chloride)-Capped Reduced Graphene Oxide for Dynamic Monitoring Hydrogen Peroxide Production by Cancerous Cells

Jiao

Pan

Liu

et al. 2019

Sensors

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“…Methanol Gas Sensor and Its Mechanism and Fabrication. In direct methanol fuel cell (DMFC), liquid methanol, because of its high energy density (4800 W h/L), 36 ease of access, and convenient handling, is utilized as the primary fuel. 37 Inlet methanol is oxidized by a reaction with water at an anode electrode.…”

Section: Performance Evaluation Of Ethanol Sensorsmentioning

confidence: 99%

“…Figure 8c shows the electrochemical reaction of H 2 as a cathode for a Nafion membrane. 197 In these sensors, the protons generated in the working electrode can transfer to the counter electrode using the Nafion (proton-exchange membrane). It is important to note that the electrons can only flow to the counter electrode through the external loop because of the semipermeability of the Nafion membrane.…”

Section: Carbon Monoxide Gasmentioning

confidence: 99%

“…196 In addition, an electromotive force (EMF) of the sensor, the mixed potential consisting of CO oxidation and O 2 reduction, is the most contributing parameter to calculating the size of the CO response considering O 2 response behavior and current−voltage characteristics in N 2 with 1000 ppm CO or 20% O 2 . 203 Comparing four dispersants for Nafion-based fuel-cell-type CO sensor (EG, PTFE, TEOS, and glycerol) shows that the sensor with EG has the best sensitivity of 88 nA/ppm, a very low detection limit of 1 ppm, and rapid response of 22 s against CO. 197 Poisoning the effect of PEFC-type electrochemical cells and significantly reducing Pt catalyst loading make it is possible to detect 0.2 ppm CO against H 2 . 204 Furthermore, the temperature ranges directly affect the performance of the CO sensor.…”

Section: Carbon Monoxide Gasmentioning

confidence: 99%

“…There are several issues in the design and configuration of today’s sensors of gases, such as amperometry problems (leakage, corrosion, and volatilization) using biomaterials. − For example, the diffusion and the adsorption of hydrogen molecules on the Pt–air RE for electrochemical H 2 sensors, palladium delamination in several encounters in the mechanical sensor of H 2 , cross-sensibility, , solubility-related problems, − small operating ranges, − response time, the limit of detection, and the lifetime of gas sensors are widely investigated. − …”

Section: Introductionmentioning

confidence: 99%

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Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Mehrpooya

Ganjali

Mousavi

et al. 2023

Ind. Eng. Chem. Res.

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Gas detection based on the electrochemical cells has recently been paid attention. Because of the many applications of fuel cell sensors, several investigations have been done on fuel-cell-type sensors for gas detection. In this study, the research works are categorized based on the type of the most used fuel cell sensors, such as CO, H2, methanol, and ethanol. Moreover, the manufacturing, applied technologies and the operating conditions of them, including the limit of detection, detection ranges, and response time of the fuel cells, are reviewed and discussed. Finally, according to the previous investigations that have been carried out, the gaps are introduced and evaluated to prepare beneficial suggestions for future investigations. According to the literature, humidity management using Pt–Cu/C is one of the most used manufacturing methods for improving a fuel cell sensor’s global and specific sensitivity. In addition, Nafion MEA with JM20 exhibits better detection performance of methanol sensors. Moreover, using nanotubes of multiwall carbon and nanoparticles of Pt–Pd in manufacturing shows proven improvements regarding the limit of detection and detection range for ethanol fuel cell sensors. PEFC-type sensor cells can improve the detection of CO to 0.2 ppm. Furthermore, the required targets for hydrogen fuel cell sensors in terms of safety and performance announced by the U.S. Department of Energy, for example, the response time of 1 s, are not reported in the open literature.

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Optical and gas-sensing property enhancement of membranes based on lithium iron phosphate particles with different dispersants

et al. 2020

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Effect of the dispersants on the performance of fuel cell type CO sensor with Pt–C/Nafion electrodes

Cited by 28 publications

References 41 publications

A Non-Enzymatic Sensor Based on Trimetallic Nanoalloy with Poly (Diallyldimethylammonium Chloride)-Capped Reduced Graphene Oxide for Dynamic Monitoring Hydrogen Peroxide Production by Cancerous Cells

A Non-Enzymatic Sensor Based on Trimetallic Nanoalloy with Poly (Diallyldimethylammonium Chloride)-Capped Reduced Graphene Oxide for Dynamic Monitoring Hydrogen Peroxide Production by Cancerous Cells

Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Optical and gas-sensing property enhancement of membranes based on lithium iron phosphate particles with different dispersants

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