A room-temperature methane sensor based on Pd-decorated ZnO/rGO hybrids enhanced by visible light photocatalysis

Xia, Yi; Wang, Jing; Xu, Lei; Li, Xian; Huang, Shaojun

doi:10.1016/j.snb.2019.127334

Cited by 61 publications

(39 citation statements)

References 60 publications

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“…The enhancement in sensitivity was attributed to surface plasmon resonance and spillover effects. Besides the decoration of graphene surface via nanoparticles, different nanocomposites and hybrids of graphene such as WO 3 nanorodes/Graphene [ 95 ], carbon nitride/rGO [ 96 ], RGO-CeO 2 [ 97 ], WO 3 /rGO [ 98 ], MoS 2 /rGO [ 99 ], p-phenylenediamine-graphene oxide (PGO)/InGaN [ 100 ], Pd-decorated ZnO/rGO [ 101 ] and Pd-WO 3 /graphene/Si [ 102 ] were utilized for improving the gas sensing performance of graphene sensor at RT under light irradiation. Zhang et al designed a gasochromic-Pd-WO 3 /graphene/Si tandem structure (Fig.…”

Section: Photoactivated Two-dimensional (2d) Materialsmentioning

confidence: 99%

Room-Temperature Gas Sensors Under Photoactivation: From Metal Oxides to 2D Materials

et al. 2020

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Room-temperature gas sensors have aroused great attention in current gas sensor technology because of deemed demand of cheap, low power consumption and portable sensors for rapidly growing Internet of things applications. As an important approach, light illumination has been exploited for room-temperature operation with improving gas sensor’s attributes including sensitivity, speed and selectivity. This review provides an overview of the utilization of photoactivated nanomaterials in gas sensing field. First, recent advances in gas sensing of some exciting different nanostructures and hybrids of metal oxide semiconductors under light illumination are highlighted. Later, excellent gas sensing performance of emerging two-dimensional materials-based sensors under light illumination is discussed in details with proposed gas sensing mechanism. Originated impressive features from the interaction of photons with sensing materials are elucidated in the context of modulating sensing characteristics. Finally, the review concludes with key and constructive insights into current and future perspectives in the light-activated nanomaterials for optoelectronic gas sensor applications.

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Section: Photoactivated Two-dimensional (2d) Materialsmentioning

confidence: 99%

Room-Temperature Gas Sensors Under Photoactivation: From Metal Oxides to 2D Materials

et al. 2020

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“…Pd-decorated ZnO/rGO hybrid-based CH 4 gas sensor shows a fast sensing response time of 74 s at room temperature towards CH 4 (25 ppm). This opens a new route to design of ternary hybrid-based CH 4 gas sensors [ 217 ].…”

Section: Greenhosue Gas Sensorsmentioning

confidence: 99%

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

Gautam¹,

Sharma²,

Tyagi³

et al. 2021

R. Soc. open sci.

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Climate change and global warming have been two massive concerns for the scientific community during the last few decades. Anthropogenic emissions of greenhouse gases (GHGs) have greatly amplified the level of greenhouse gases in the Earth's atmosphere which results in the gradual heating of the atmosphere. The precise measurement and reliable quantification of GHGs emission in the environment are of the utmost priority for the study of climate change. The detection of GHGs such as carbon dioxide, methane, nitrous oxide and ozone is the first and foremost step in finding the solution to manage and reduce the concentration of these gases in the Earth's atmosphere. The nanostructured metal oxide semiconductor (NMOS) based technologies for sensing GHGs emission have been found most reliable and accurate. Owing to their fascinating structural and morphological properties metal oxide semiconductors become an important class of materials for GHGs emission sensing technology. In this review article, the current concentration of GHGs in the Earth's environment, dominant sources of anthropogenic emissions of these gases and consequently their possible impacts on human life have been described briefly. Further, the different available technologies for GHG sensors along with their principle of operation have been largely discussed. The advantages and disadvantages of each sensor technology have also been highlighted. In particular, this article presents a comprehensive study on the development of various NMOS-based GHGs sensors and their performance analysis in order to establish a strong detection technology for the anthropogenic GHGs. In the last, the scope for improved sensitivity, selectivity and response time for these sensors, their future trends and outlook for researchers are suggested in the conclusion of this article.

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“…[ 94 ] Recently, the complete photocatalytic oxidation of methane has attracted increasing attention. [ 78,95–103 ] The Yi group reported that Ag‐modified ZnO (Ag/ZnO) nanostructures showed very high photocatalytic activity for CH 4 oxidation under simulated‐sunlight illumination. [ 78 ] It was found that the built‐in electric field of a ZnO polar semiconductor promotes the separation of photogenerated electrons and holes.…”

Section: Photocatalytic Conversion Of Methanementioning

confidence: 99%

Photocatalytic and Thermocatalytic Conversion of Methane

et al. 2021

Solar RRL

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Methane, a high‐quality fuel and important chemical raw material, is widely used in industrial production and life applications. However, the utilization and conversion rates of methane are low because methane is a very stable hydrocarbon gas. At present, the main industrial route of methane conversion involves thermocatalysis technology operating at high temperature. However, this approach has the disadvantages of high energy consumption, high equipment requirements, and high reaction temperature, resulting in shortened catalyst lifetime. Therefore, there is an urgent need to develop a new technology that can effectively utilize and transform methane under mild conditions to obtain the target products. As a kind of clean and renewable energy, solar energy has attracted extensive attention, and research on the effective conversion of methane by solar energy has become an important field. Herein, the recent achievements of solar energy in promoting or driving the catalytic conversion of methane are reviewed. The selection and design of photocatalysts used in different photocatalytic methane conversion reactions are focused on, which may provide important guidance for future research on this process. The prospects and challenges of photocatalytic methane conversion are also discussed.

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A room-temperature methane sensor based on Pd-decorated ZnO/rGO hybrids enhanced by visible light photocatalysis

Cited by 61 publications

References 60 publications

Room-Temperature Gas Sensors Under Photoactivation: From Metal Oxides to 2D Materials

Room-Temperature Gas Sensors Under Photoactivation: From Metal Oxides to 2D Materials

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

Photocatalytic and Thermocatalytic Conversion of Methane

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