Enhanced field emission properties of CuO nanoribbons decorated with Ag nanoparticles

Wu, Shumao; Li, Fēi; Zhang, Liangji; Li, Zhen

doi:10.1016/j.matlet.2016.02.096

Cited by 19 publications

(4 citation statements)

References 19 publications

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“…In order to enhance the eld emission properties, the researchers employed various approaches to obtain surface modied, 18,19 hybrid, 20,21 and post-processed 22,23 CuO nanostructures. Recently, noble metal nanoparticles, such as Ag 18 and Au, 24 are decorated on the 1D CuO nanostructures by wet chemistry and enhanced eld emissions have been obtained due to the increased conductivity and improved semiconductor characteristics. Carbon materials (graphene oxide layers 19 and carbon nanotube network lms 25 ) and metal oxides such as ZnO nanoparticles 26 are also chosen to coat on the CuO nanostructures to improve the eld emissions.…”

Section: Introductionmentioning

confidence: 99%

Electric field assisted growth and field emission properties of thermally oxidized CuO nanowires

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Electric field assisted growth and field emission properties of thermally oxidized CuO nanowires

et al. 2017

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“…The CuO has a monoclinic crystal system and narrow band gap in the range of 1.2-1.8 eV [25]. It has an extensive range of uses in the areas of photocatalytic activity [26], solar cells [27], batteries [28], photocatalysis [29], electronics [30] and sensors [31] as well. The gas-sensing capabilities of CuO have been the subject of a number of studies.…”

Section: Introductionmentioning

confidence: 99%

Low ppm NO2 detection through advanced ultrasensitive copper oxide gas sensor

Sihag,

Dahiya,

Rani

et al. 2024

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The imperative development of a cutting-edge environmental gas sensor is essential to proficiently monitor and detect hazardous gases, ensuring comprehensive safety and awareness. Nanostructures developed from metal oxides are emerging as promising candidates for achieving superior performance in gas sensors. NO2 is one of the toxic gases that affects people as well as the environment so its detection is crucial. The present study investigates the gas sensing capability of copper oxide-based sensor for 5 ppm of NO2 gas at 100 °C. The sensing material was synthesized using a facile precipitation method and characterized by XRD, FE-SEM, UV–visible spectroscopy, photoluminescence spectroscopy, XPS and BET techniques. The developed material shows a response equal to 67.1% at optimal temperature towards 5 ppm NO2 gas. The sensor demonstrated an impressive detection limit of 300 ppb, along with a commendable percentage response of 5.2%. Under optimized conditions, the synthesized material demonstrated its high selectivity, as evidenced by the highest percentage response recorded for NO2 gas among NO2, NH3, CO, CO2 and H2S.

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“…The advantages of using solar light or low consume artificial lights to promote VOCs oxidation at room temperature is being actively pursued. Current limitations are found either in the weak response of the most active semiconductor photocatalysts (i.e., TiO 2 , ZnO) beyond the UV range (that only represents 4%–5% of the full solar spectrum) or in the rapid electron-hole recombination rates detected in transition metal oxide semiconducting photocatalysts with expanded absorption capacities towards the visible-near infrared (NIR) ranges (i.e., MO x , M = Cu, Fe, Mn, Co) [2,43,52,53,54,55,56,57,58].…”

Section: Introductionmentioning

confidence: 99%

Silver-Copper Oxide Heteronanostructures for the Plasmonic-Enhanced Photocatalytic Oxidation of N-Hexane in the Visible-NIR Range

et al. 2019

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Volatile organic compounds (VOCs) are recognized as hazardous contributors to air pollution, precursors of multiple secondary byproducts, troposphere aerosols, and recognized contributors to respiratory and cancer-related issues in highly populated areas. Moreover, VOCs present in indoor environments represent a challenging issue that need to be addressed due to its increasing presence in nowadays society. Catalytic oxidation by noble metals represents the most effective but costly solution. The use of photocatalytic oxidation has become one of the most explored alternatives given the green and sustainable advantages of using solar light or low-consumption light emitting devices. Herein, we have tried to address the shortcomings of the most studied photocatalytic systems based on titania (TiO2) with limited response in the UV-range or alternatively the high recombination rates detected in other transition metal-based oxide systems. We have developed a silver-copper oxide heteronanostructure able to combine the plasmonic-enhanced properties of Ag nanostructures with the visible-light driven photoresponse of CuO nanoarchitectures. The entangled Ag-CuO heteronanostructure exhibits a broad absorption towards the visible-near infrared (NIR) range and achieves total photo-oxidation of n-hexane under irradiation with different light-emitting diodes (LEDs) specific wavelengths at temperatures below 180 °C and outperforming its thermal catalytic response or its silver-free CuO illuminated counterpart.

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Enhanced field emission properties of CuO nanoribbons decorated with Ag nanoparticles

Cited by 19 publications

References 19 publications

Electric field assisted growth and field emission properties of thermally oxidized CuO nanowires

Electric field assisted growth and field emission properties of thermally oxidized CuO nanowires

Low ppm NO2 detection through advanced ultrasensitive copper oxide gas sensor

Silver-Copper Oxide Heteronanostructures for the Plasmonic-Enhanced Photocatalytic Oxidation of N-Hexane in the Visible-NIR Range

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