A facile and green method for synthesis of rGO@SiO2@FeOOH@Ag nanocomposite as efficient surface enhanced Raman scattering (SERS) platforms

Huang, Qingli; Wei, Wenxian; Yan, Qingpi; Wu, Changle; Zhu, Xiashi

doi:10.1016/j.matlet.2015.03.117

Cited by 15 publications

(6 citation statements)

References 17 publications

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“…The utilization of nanomaterials has explosively increased with a great amount of work reported (Jung et al, 2016;Karimipour and Molaei, 2016;Kiani et al, 2016;Kim T. U. et al, 2016); Lee et al, 2016;Meang et al, 2016;Tola et al, 2016;Truong and Park, 2016). Recently, nanocomposites based on RGO have been synthesized through the decoration of different NPs on graphene oxide (GO) or RGO, which have numerous applications in lithium ion batteries (Chen et al, 2015), surface-enhanced Raman spectroscopy (Huang et al, 2015), sensors (Bas, 2015), photo-catalysts (Yan et al, 2014;Hareesh et al, 2016), and others. In the research on gas sensing, one advantage of nanoparticle decoration is that a noble metal can be used to enhance the gas responses of sensors by chemical and electrical sensitization (Lin and Hsu, 2013;Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Improvement of NO2 Sensing Properties in Pd Functionalized Reduced Graphene Oxides by Electron-Beam Irradiation

et al. 2019

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Herein, we present the effect of electron-beam irradiation (EBI) on the gas-sensing properties of Pd-functionalized reduced graphene oxide (RGO). Scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy were used to characterize the synthesized products. The samples were irradiated using electron beams at doses of 0 (Pd-RGO-0), 100 (Pd-RGO-100), and 500 kGy (Pd-RGO-500), and the NO2 gas-sensing properties were investigated. It was found that irradiation by electron beams has a critical effect on the gas-sensing properties of the samples, and the Pd-RGO-500 sensor showed the highest response to NO 2 gas. In particular, the response of the unirradiated sensor and the sensor irradiated at doses of 100 and 500 kGy to 10 ppm NO 2 were 1.027, 1.045, and 1.047, respectively. The response times of Pd-RGO-0, Pd-RGO-100, and Pd-RGO-500 to 10 ppm NO 2 gas were 389, 335, and 345 s, respectively. The corresponding recovery times for these sensors were 808, 766, and 816 s, respectively. The increased numbers of oxygen functional groups and high-energy defects were the main reasons for the increased gas response. This study will eventually lead to increased performance levels of RGO-based sensors that use EBI, as this technology can introduce changes into materials in a non-contact, clean, and powerful manner.

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Section: Introductionmentioning

confidence: 99%

Improvement of NO2 Sensing Properties in Pd Functionalized Reduced Graphene Oxides by Electron-Beam Irradiation

et al. 2019

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“…The energy separation between Fe 2p 1/2 and Fe 2p 3/2 is 13.6 eV, which is a characteristic of FeOOH. 26 And a satellite peak of Fe 2p 3/2 can be seen in about 719.0 eV, as shown in Fig. 1(B).…”

Section: Measurement Of Photocatalytic Activitymentioning

confidence: 80%

“…The typical peaks of Fe element at the binding energies of 724.6 eV (Fe 2p 1/2 ) and 711.0 eV (Fe 2p 3/2 ) are found. The energy separation between Fe 2p 1/2 and Fe 2p 3/2 is 13.6 eV, which is a characteristic of FeOOH 26. And a satellite peak of Fe 2p 3/2 can be seen in about 719.0 eV, as shown in Fig.1(B).…”

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confidence: 84%

Photodegradation of Rhodamine B in α-FeOOH/oxalate under light irradiation

et al. 2015

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“…The rolled-up Ag/FeOOH microtubes move in hydrogen peroxide solutions with an average speed of 117 μm/s. Synthesized Ag/FeOOH composite material can also be used as a catalyst, sensor, and surface-enhanced Raman spectroscopy (SERS) platform . We believe that the combination of GSIT synthesis and SILD surface modification enabled the fabrication of microtubes with a hierarchical morphology.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of the FeOOH Microtubes with Inner Surface Modified by Ag Nanoparticles

et al. 2020

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Lepidocrocite (γ-FeOOH) microtubes with scroll morphology prepared by gas–solution interface technique (GSIT) have been modified by silver nanoparticles (Ag NPs). The successive ionic layer deposition (SILD) was first used for the synthesis of the Ag NPs on the lower surface of a solid film freely lying on the surface of a solution. The sizes of Ag NPs are about 15 nm after one synthesis cycle, and their diameters reach 35 nm after three SILD cycles. As a result of vacuum-drying, the modified film is transformed into microtubes with a diameter of about 10 μm and a length of 150 μm in such a way that the inner surface of the microtube is modified by Ag NPs. The catalytic properties of the microtubes have been observed by the decomposition of H2O2 in aqueous solution. The Ag/FeOOH microtubes move in hydrogen peroxide solutions with an average speed of 117 μm/s. This result is based on the synergetic effect between lepidocrocite nanosheets and Ag NPs, which results in the modified microtubes having enhanced mobility.

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A facile and green method for synthesis of rGO@SiO2@FeOOH@Ag nanocomposite as efficient surface enhanced Raman scattering (SERS) platforms

Cited by 15 publications

References 17 publications

Improvement of NO2 Sensing Properties in Pd Functionalized Reduced Graphene Oxides by Electron-Beam Irradiation

Improvement of NO2 Sensing Properties in Pd Functionalized Reduced Graphene Oxides by Electron-Beam Irradiation

Photodegradation of Rhodamine B in α-FeOOH/oxalate under light irradiation

Synthesis of the FeOOH Microtubes with Inner Surface Modified by Ag Nanoparticles

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