Down to ppb level NO2 detection by ZnO/rGO heterojunction based chemiresistive sensors

Cao, Peijiang; Cai, YongZhi; Pawar, Dnyandeo; Navale, S.T.; Rao, C. N. R.; Han, Shun; Xu, WangYin; Fang, Ming; Liu, Xinke; Zeng, Yanwei; Liu, Wenjun; Zhu, Deliang

doi:10.1016/j.cej.2020.125491

Cited by 96 publications

(31 citation statements)

References 55 publications

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“…19,20,62 In addition, some sensors have poor response and recovery speeds, which are extremely unfavorable for real-time monitoring of toxic gases. [59][60][61] Comparatively speaking, the Pd-CuO/rGO nanocomposite has broad prospects in designing and fabricating NO 2 sensors in practical applications.…”

Section: Resultsmentioning

confidence: 99%

Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

et al. 2022

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“…Two different characteristic peaks of Zn 2p appear at 1022.8 and 1045.4 eV, respectively, which correlate with 2p3/2 and 2p1/2 states of ZnO nanoparticles in figure 7b and further clarify the existence of Zn 2+ in ZnO [30]. Furthermore, the high-resolution scan of C 1s spectra (figure 7c) shows three different peaks at 284.8, 286.2 and 290.2 eV, which are designated as C-C, C-O and C=O bonds of the air filter, respectively [31,32]. Figure 7d shows the spectrum of O 1s.…”

Section: X-ray Photoelectron Spectroscopy Analysis Of Rgz2 Air Filter For the Surface Composition And Chemical Statesmentioning

confidence: 53%

A superfine glass fibre air filter with rapid response to photocatalytic antibacterial properties under visible light by loading rGO/ZnO

et al. 2021

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The development of high-performance air filter has become more and more important to public health. However, it has always been very challenging for developing a multifunctional air filter to simultaneously achieve excellent filtration and antibacterial properties. Herein, a versatile air filter was prepared with loading the reduced graphene (rGO) and zinc oxide on the superfine glass fibre (s-GF) with the three-dimensional network structure by in situ sol–gel process followed by calcination, which aims to achieve synergistic high-efficiency air filtration and rapid response to photocatalytic antibacterial properties under visible light. The air filter showed a three-dimensional network structure based on a rGO/ZnO/s-GF multilayer and exhibited the highest catalytic performance by achieving a 95% degradation effect on rhodamine B within 2 h and achieving 100% antibacterial inactivation of the Escherichia coli and Staphylococcus aureus within 4 h under visible light when the weight ratio of rGO in rGO/ZnO is 1.6%. The air filtration efficiency can also be maintained at 99% after loading ZnO and rGO photocatalytic particles. The spectrum of the photoluminescence (PL), UV-Vis diffuse reflectance spectra (DRS) and electron spin resonance (ESR) indicate that the combination of rGO and ZnO on the s-GF can increase the separation of photogenerated carriers and the specific surface area of the air filter, thereby increasing the photocatalytic response and antibacterial properties of the s-GF air filter under visible light in a short time.

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“…Hence, to solve this issue, surface modication by decorating metal oxides such as ZnO, SnO 2 , Co 3 O 4 , In 2 O 3 , CuO, and Fe 2 O 3 together with graphene, GO, and rGO has been explored for enhancing its sensing performance. 82,83,[99][100][101][102] In one of the works, Jyoti et al synthesized a ZnO-decorated graphene-based sensor for NO 2 gas detection. 103 The as-made sensor showed 48.4% sensitivity for 40 ppm NO 2 at room temperature.…”

Section: No X Sensorsmentioning

confidence: 99%

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

et al. 2021

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Down to ppb level NO2 detection by ZnO/rGO heterojunction based chemiresistive sensors

Cited by 96 publications

References 55 publications

Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

A superfine glass fibre air filter with rapid response to photocatalytic antibacterial properties under visible light by loading rGO/ZnO

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

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Down to ppb level NO2 detection by ZnO/rGO heterojunction based chemiresistive sensors

Cited by 96 publications

References 55 publications

Highly responsive and selective ppb-level NO2 gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

Highly responsive and selective ppb-level NO2 gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

A superfine glass fibre air filter with rapid response to photocatalytic antibacterial properties under visible light by loading rGO/ZnO

Recent trends in gas sensingviacarbon nanomaterials: outlook and challenges

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Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature

Highly responsive and selective ppb-level NO₂ gas sensor based on porous Pd-functionalized CuO/rGO at room temperature