2019
DOI: 10.1039/c9ra05706d
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Assembly with copper(ii) ions and D–π–A molecules on a graphene surface for ultra-fast acetic acid sensing at room temperature

Abstract: The as-prepared 4HQ-rGO/Cu2+ sensor possessed a high response, outstanding selectivity and fast response-recovery characteristic, which was mainly attributed to the supramolecularly assemble of 4-hydroxyquinoline, and Cu2+ with graphene nanosheets.

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Cited by 12 publications
(8 citation statements)
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“…Raman scattering spectroscopy was used to examine the structural characteristics.of as synthesized materials. The D‐band and G‐ band of all two samples are responsible for two distinct peaks at 1348 cm −1 and 1594 cm −1 , respectively (Figure 3 & S3) [47] . The first‐order dispersion of the E2 g phonon of the sp 2 carbon‐carbon bond is responsible for the G‐band, whereas the D‐band represents the defect sites linked to vacancies and grain boundaries [48] .…”
Section: Resultsmentioning
confidence: 96%
See 1 more Smart Citation
“…Raman scattering spectroscopy was used to examine the structural characteristics.of as synthesized materials. The D‐band and G‐ band of all two samples are responsible for two distinct peaks at 1348 cm −1 and 1594 cm −1 , respectively (Figure 3 & S3) [47] . The first‐order dispersion of the E2 g phonon of the sp 2 carbon‐carbon bond is responsible for the G‐band, whereas the D‐band represents the defect sites linked to vacancies and grain boundaries [48] .…”
Section: Resultsmentioning
confidence: 96%
“…The D- ChemistrySelect band and G-band of all two samples are responsible for two distinct peaks at 1348 cm À 1 and 1594 cm À 1 , respectively (Figure 3 & S3). [47] The first-order dispersion of the E2 g phonon of the sp 2 carbon-carbon bond is responsible for the G-band, whereas the D-band represents the defect sites linked to vacancies and grain boundaries. [48] The degree of disorder and defect in each sample can be determined using the peak intensity ratio of the D band to the G band (I D /I G ).…”
Section: Resultsmentioning
confidence: 99%
“…The gas sensing behaviors of the RTGSs were characterized using a home-built gas sensing system as illustrated in our previous work . The gas sensing response of the sensors is defined as formula where R a is the initial resistance of the gas sensors in air and R g is the resistance detected under NO 2 exposure.…”
Section: Resultsmentioning
confidence: 99%
“…[15] Low working temperature reduces power consumption, becoming the future gas sensor development trend. [20,21] Hence, it is of great interest to design novel materials to enhance gas-sensing performances for acetic acid detection.…”
Section: Introductionmentioning
confidence: 99%