Self-powered ethanol gas sensor based on the piezoelectric Ag/ZnO nanowire arrays at room temperature

Zhang, Xixi; Wang, Weiwei; Zhang, Dongzhi; Mi, Qian; Yu, Sujing

doi:10.1007/s10854-021-05494-5

Cited by 22 publications

(7 citation statements)

References 59 publications

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“…Further, Ag NPs tends to lose electrons, which may generate more triboelectric charges. 35,36 More importantly, the voltage variation of the TENG based on Ag@BMO-CS film was more pronounced than the pure friction material under the same ammonia concentration. The introduction of Ag NPs greatly improves the gas-sensing performance of the self-powered sensor.…”

Section: Resultsmentioning

confidence: 96%

An Eco-Friendly and Dual-Functional Ag@BMO-Chitosan-Based Triboelectric Nanogenerator for Self-Powered Gas Sensing Application

Liu,

Qin,

Zhou

et al. 2023

ECS J. Solid State Sci. Technol.

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Real-time monitoring of hazardous gases is critical to determine the influence of the air environment on the lives of people. Herein, a highly biodegradable chitosan-based triboelectric gas sensor has been successfully fabricated by using Ag@Bi2MoO6-Chitosan (Ag@BMO-CS) bilayer film obtained with the facile drop-casting method, which paired with polydimethylsiloxane (PDMS) film as triboelectric layers. The output voltage of the 5% Ag-modified chitosan bilayer-based triboelectric nanogenerator reaches up to 8.35 V at 2 Hz operating frequency. The integrated self-powered gas sensor based on the triboelectrification and gas adsorption effects shows the ability to distinguish ammonia (NH3) gas sensitively, and the response to 20 ppm NH3 (ΔV/Va=59.1 %) is 1.4 times larger than the separated self-powered sensor. In addition, the sensing mechanism combining the triboelectric effect and gas-sensing reaction was proposed to demonstrate the enhancement of NH3 sensing performance for Ag@BMO-CS-based triboelectric gas sensors. This work presents a sustainable self-supply gas sensor based on TENG for the detection of NH3 gas without any external power supply, which has a broad spectrum of applications in hazardous gas leaks, non-invasive diagnostics, and fresh food transportation.

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Section: Resultsmentioning

confidence: 96%

An Eco-Friendly and Dual-Functional Ag@BMO-Chitosan-Based Triboelectric Nanogenerator for Self-Powered Gas Sensing Application

Liu,

Qin,

Zhou

et al. 2023

ECS J. Solid State Sci. Technol.

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“…The detection of pressure variations in the form of sound is the most common sensor application, which is seen in piezoelectric microphones and piezoelectric pickups for electrically amplified guitars. [138,140] Thermal Calorimetry…”

Section: Electrical Conductometric Capacitive Chemiresistivementioning

confidence: 99%

Heterojunctions of rGO/Metal Oxide Nanocomposites as Promising Gas-Sensing Materials—A Review

et al. 2022

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Monitoring environmental hazards and pollution control is vital for the detection of harmful toxic gases from industrial activities and natural processes in the environment, such as nitrogen dioxide (NO2), ammonia (NH3), hydrogen (H2), hydrogen sulfide (H2S), carbon dioxide (CO2), and sulfur dioxide (SO2). This is to ensure the preservation of public health and promote workplace safety. Graphene and its derivatives, especially reduced graphene oxide (rGO), have been designated as ideal materials in gas-sensing devices as their electronic properties highly influence the potential to adsorb specified toxic gas molecules. Despite its exceptional sensitivity at low gas concentrations, the sensor selectivity of pristine graphene is relatively weak, which limits its utility in many practical gas sensor applications. In view of this, the hybridization technique through heterojunction configurations of rGO with metal oxides has been explored, which showed promising improvement and a synergistic effect on the gas-sensing capacity, particularly at room temperature sensitivity and selectivity, even at low concentrations of the target gas. The unique features of graphene as a preferential gas sensor material are first highlighted, followed by a brief discussion on the basic working mechanism, fabrication, and performance of hybridized rGO/metal oxide-based gas sensors for various toxic gases, including NO2, NH3, H2, H2S, CO2, and SO2. The challenges and prospects of the graphene/metal oxide-based based gas sensors are presented at the end of the review.

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“…The first method that can be used to improve the performance of a self‐powered active gas sensor is doping ZnO with a metal. Various studies on conventional gas sensors using ZnO have attempted to improve their performance by adding suitable noble metals (e.g., Au, [ 25 ] Pt, [6a] Pd, [ 26 ] and Ag [ 27 ] ) and transition metals (e.g., Cu, [ 28 ] Fe, [ 29 ] and Co [ 30 ] ). The metal dopants are either directly entering the lattice sites of ZnO or replacing Zn 2+ .…”

Section: Self‐powered Active Gas Sensorsmentioning

confidence: 99%

“…The O 2 − in air improves the output performance, but exposure to a reductive gas releases electrons back to ZnO by the reaction between the gas and oxygen, which degrades the piezoelectric performance due to the strong screening effect. [ 34 ] Based on this principle, doping ZnO with noble metals (such as Pt, [ 35 ] Au, [ 36 ] Pd, [ 37 ] and Ag [ 27 ] ) should improve the performance of self‐powered active gas sensors. He et al [37b] reported a self‐powered ethanol sensor that used Pd‐doped ZnO.…”

Section: Self‐powered Active Gas Sensorsmentioning

confidence: 99%

Piezo/Triboelectric Effect Driven Self‐Powered Gas Sensor for Environmental Sensor Networks

Joo

Lee²,

Lee

2022

Energy Tech

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With the growing concern about the safety of the spaces where people work and live, the development of fast and accurate real‐time safety monitoring systems such as gas sensors to detect harmful gas such as H2S, NH3, and NO x is essential. For effective monitoring, a wireless sensor system that can be used anytime, anywhere is required, but there is still a limit to the power supply to operate it. Self‐powered gas sensors with piezoelectric/triboelectric nanogenerators (PENGs/TENGs) are receiving considerable attention because they can implement portable gas sensors that do not require an additional power source. Herein, the latest developments in piezoelectric/triboelectric effect based self‐powered gas sensors are summarized and discussed. The first part of this review discusses the fundamental aspects and strategies of the self‐powered active gas sensor based on the piezoelectric and triboelectric effects. The second part focuses on the self‐powered gas sensors that operate on energy generated by piezoelectric and TENGs.

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Self-powered ethanol gas sensor based on the piezoelectric Ag/ZnO nanowire arrays at room temperature

Cited by 22 publications

References 59 publications

An Eco-Friendly and Dual-Functional Ag@BMO-Chitosan-Based Triboelectric Nanogenerator for Self-Powered Gas Sensing Application

An Eco-Friendly and Dual-Functional Ag@BMO-Chitosan-Based Triboelectric Nanogenerator for Self-Powered Gas Sensing Application

Heterojunctions of rGO/Metal Oxide Nanocomposites as Promising Gas-Sensing Materials—A Review

Piezo/Triboelectric Effect Driven Self‐Powered Gas Sensor for Environmental Sensor Networks

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