Flexible and highly sensitive H2S gas sensor based on in-situ polymerized SnO2/rGO/PANI ternary nanocomposite with application in halitosis diagnosis

Zhang, Dongzhi; Wu, Zhengfang; Zong, Xiaoqi

doi:10.1016/j.snb.2019.03.055

Cited by 217 publications

(112 citation statements)

References 55 publications

Supporting

Mentioning

110

Contrasting

Unclassified

Order By: Relevance

“…Secondly, carbon fillers can be used as an amplifier in a ternary system based on the p-n junction by adding new pn interfaces and thus increasing the effect of the depletion region on the signal. In the SnO 2 /RGO/PANI nanocomposite, the heterojunction is the main contributor to sensing enhancement (Zhang et al, 2019). The band gaps of SnO 2 , RGO, and PANI are 3.5, 4.39, and 4.49 eV, respectively, resulting in the formation of a p-n junction between the two p-type materials (i.e., RGO and PANI) and the metal oxide (SnO 2 ).…”

Section: Graphitic Composites (Cnt/graphene)mentioning

confidence: 99%

Hydrogen Sulfide Detection by Sensors Based on Conductive Polymers: A Review

et al. 2020

View full text Add to dashboard Cite

Coming from natural and anthropogenic sources, hydrogen sulfide gas (H 2 S) is a smelly hazardous substance at the sub-ppm level, which can lead to poisoning deaths at higher concentrations. Researchers have been working for decades to design sensors with sufficient/good/robust metrological properties and good stability in order to monitor and control in real time the risk associated with this gas. Among the devices proposed, chemiresistive sensors based on conductive polymer appear as a good alternative to the most common solutions such as electrochemical and optical sensors. They present various advantages in terms of design (easy fabrication, easy tuning of physical and chemical properties, low cost, etc.) and performances (good sensitivity, good reproducibility, room temperature operation, short response time, etc.). In this review, we summarize the progresses made on conductive polymer sensors dedicated to H 2 S detection, including the performance of the different materials and sensing mechanisms. Finally, we identify the limitations of these sensors and highlight the most promising approaches to enable the use of these technologies in real-world applications.

show abstract

Section: Graphitic Composites (Cnt/graphene)mentioning

confidence: 99%

Hydrogen Sulfide Detection by Sensors Based on Conductive Polymers: A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Apart from the specific molecules in body fluids, some kinds of gas molecules in exhaled breath, such as water molecule and volatile organic compounds (VOCs, e.g., H 2 S and acetone), can also reflect personal health condition. [ 106 ] They provide a new perspective for the monitoring of cell metabolism and patients’ physical conditions. [ 107 ] Water molecule monitoring in exhaled breath can reflect the dehydration of human body.…”

Section: Health Status Monitoringmentioning

confidence: 99%

Recent Advances in Nanomaterial‐Enabled Wearable Sensors: Material Synthesis, Sensor Design, and Personal Health Monitoring

Peng

Zhao

Ping

et al. 2020

Small

160

105

View full text Add to dashboard Cite

Wearable sensors have gained much attention due to their potential in personal health monitoring in a timely, cost‐effective, easy‐operating, and noninvasive way. In recent studies, nanomaterials have been employed in wearable sensors to improve the sensing performance in view of their excellent properties. Here, focus is mainly on the nanomaterial‐enabled wearable sensors and their latest advances in personal health monitoring. Different kinds of nanomaterials used in wearable sensors, such as metal nanoparticles, carbon nanomaterials, metallic nanomaterials, hybrid nanocomposites, and bio‐nanomaterials, are reviewed. Then, the progress of nanomaterial‐based wearable sensors in personal health monitoring, including the detection of ions and molecules in body fluids and exhaled breath, physiological signals, and emotion parameters, is discussed. Furthermore, the future challenges and opportunities of nanomaterial‐enabled wearable sensors are discussed.

show abstract

“…In order to further enhance the sensing performance, the research of ternary hybrid system has attracted more and more attention in recent years. Various gas sensors based on ternary nanocomposite have been synthesized recently for gas sensing research, mainly include metal particles-metal oxideconducting polymers [107][108][109][110], metal particles-carbon nanotubes-conducting polymers [111], metal particlesgraphene-conducting polymers [112,113], metal oxidegraphene-conducting polymers [114][115][116][117][118], metal oxide-metal oxide-conducting polymers [119], metal oxide-metal oxidemetal oxide-conducting polymers [ 120].…”

Section: Polymer Based Ternary Nanocompositesmentioning

confidence: 99%

Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Yan

Yang

et al. 2020

Science and Technology of Advanced Materials

112

View full text Add to dashboard Cite

With the rapid development of conductive polymers, they have shown great potential in room-temperature chemical gas detection, as their electrical conductivity can be changed upon exposure to oxidative or reductive gas molecules at room temperature. However, due to their relatively low conductivity and high affinity toward volatile organic compounds and water molecules, they always exhibit low sensitivity, poor stability, and gas selectivity, which hinder their practical gas sensor applications. In addition, inorganic sensitive materials show totally different advantages in gas sensors, such as high sensitivity, fast response to low concentration analytes, high surface area, and versatile surface chemistry, which could complement the conducting polymers in terms of the sensing characteristics. It seems to be a win-win choice to combine inorganic sensitive materials with polymers for gas detection due to their synergistic effects, which has attracted extensive interests in gas-sensing applications. In this review, we summarize the recent development in polymer-inorganic nanocomposite based gas sensors. The roles of inorganic nanomaterials in improving the gas-sensing performances of conducting polymers are introduced and the progress of conducting polymer-inorganic nanocomposites including metal oxides, metal, carbon (carbon nanotube, graphene), and ternary composites are presented. Finally, a conclusion and a perspective in the field of gas sensors incorporating conducting polymer-inorganic nanocomposite are summarized.

show abstract

Flexible and highly sensitive H2S gas sensor based on in-situ polymerized SnO2/rGO/PANI ternary nanocomposite with application in halitosis diagnosis

Cited by 217 publications

References 55 publications

Hydrogen Sulfide Detection by Sensors Based on Conductive Polymers: A Review

Hydrogen Sulfide Detection by Sensors Based on Conductive Polymers: A Review

Recent Advances in Nanomaterial‐Enabled Wearable Sensors: Material Synthesis, Sensor Design, and Personal Health Monitoring

Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Contact Info

Product

Resources

About