Enhanced gas sensing properties to acetone vapor achieved by α-Fe2O3 particles ameliorated with reduced graphene oxide sheets

Zhang, Bo; Liu, Jie; Cui, Xiaobiao; Wang, Qingji; Gao, Yuan; Sun, Peng; Liu, Fengmin; Shimanoe, Kengo; Yamazoe, Noboru; Lu, Geyu

doi:10.1016/j.snb.2016.11.023

Cited by 125 publications

(52 citation statements)

References 67 publications

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“…3D α ‐Fe 2 O 3 structures such as spheres, nanoclusters, round‐edged cubes, hollow nanobarrels (HNBs), etc . were obtained as well.…”

Section: Synthesis Of Binary Graphene/fe2o3 Compositesmentioning

confidence: 94%

“…Figures e and f show the well‐defined morphological features of tetrakaidecahedron with a typical particle size of 700 nm and a broad and uniform size distribution. rGO/ α ‐Fe 2 O 3 composites were obtained using a hydrothermal treatment . Methenamine and FeCl 3 dissolved in ethanol solution were mixed with the GO solution, and after heat treatment and washing, the composites were formed.…”

Section: Synthesis Of Binary Graphene/fe2o3 Compositesmentioning

confidence: 99%

“…The response up to 100 ppm acetone was approximately 8.9, much higher than that of pure α ‐Fe 2 O 3 nanobelts. rGO/ α ‐Fe 2 O 3 composites were employed for gas sensing: the gas response based on the composite containing 1 wt% rGO was enhanced, and the response time was only 2 s . When rGO was introduced, the formation of local p‐n heterojunctions led to a change in the carrier concentration as well as the extension of electron depletion layers.…”

Section: Applicationsmentioning

confidence: 99%

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Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Guo

Yang

et al. 2019

ChemElectroChem

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Iron(III) oxide (Fe 2 O 3 ) has attracted great attention, owing to its abundant natural resources, environmental friendliness, and low cost. Nevertheless, this material possesses an inferior rate capability and a cycle stability that is similar to most transition metal oxides. Graphene, with a one-atom-thick 2D structure, possesses superior mechanical properties, electrical conductivity, and stability, and excellent electrical and electrochemical behaviors. The hierarchical structure of graphene/Fe 2 O 3 composites provides a porous conductive network, close contact between the graphene and Fe 2 O 3 , a stress buffer space for charge transport, and superior structural stability. This composite consists of high conductivity graphene with interconnected Fe 2 O 3 , thus exposing abundant active sites for redox reactions and providing sufficient contacts with the electrolyte. Consequently, materials composed of Fe 2 O 3 and graphene have been widely explored, owing to their outstanding synergistic effects. Graphene can effectively limit the volume expansion and agglomeration of Fe 2 O 3 , whereas Fe 2 O 3 can prevent the restacking of graphene at the same time. This article mainly discusses the preparation of Fe 2 O 3 /graphene materials and their applications, including supercapacitors, rechargeable batteries, catalysis, and so forth. In addition, the perspectives and challenges of Fe 2 O 3 /graphene materials for different applications are also discussed.

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“…3D α ‐Fe 2 O 3 structures such as spheres, nanoclusters, round‐edged cubes, hollow nanobarrels (HNBs), etc . were obtained as well.…”

Section: Synthesis Of Binary Graphene/fe2o3 Compositesmentioning

confidence: 94%

Section: Synthesis Of Binary Graphene/fe2o3 Compositesmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Guo

Yang

et al. 2019

ChemElectroChem

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“…Due to their high sensitivity, quick response, small structure and easy integration, semiconductor sensors have become the focus of research in recent years. 3 We mainly research semiconductor oxide gas sensors based on metal oxide semiconductors, such as SnO 2 , 4-6 ZnO, 7,8 WO 3 , 9,10 Fe 2 O 3 , 11,12 In 2 O 3 , 13,14 CuO, 15,16 and NiO. 17 The gas sensing properties of materials are not only dependent on the composition of diverse elements, but also the relationship with surface morphologies, architecture, particle size and shape.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and NO₂gas-sensing properties of coral-like indium oxide via a facile solvothermal method

Zhang

Zhu

et al. 2017

RSC Adv.

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“…Hence, designing and developing gas sensors with high sensibility, excellent selectivity and lower optimum operation temperature is urgent and important.Graphene is a typical two-dimensional (2D) sheet of sp 2 bonded carbon with excellent electronic applications. Due to its unique physical and chemical properties, many efforts have been carried out on the application of graphene as sensing elements [12]. These advantages, including its high conductivity, large surface area and low electrical noise, make it a promising platform for preparing new sensors [13][14][15].…”

mentioning

confidence: 99%

Graphene Oxide@3D Hierarchical SnO2 Nanofiber/Nanosheets Nanocomposites for Highly Sensitive and Low-Temperature Formaldehyde Detection

2019

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In this work, we reported a formaldehyde (HCHO) gas sensor with highly sensitive and selective gas-sensing performance at low operating temperature based on graphene oxide (GO)@SnO 2 nanofiber/nanosheets (NF/NSs) nanocomposites. Hierarchical SnO 2 NF/NSs coated with GO nanosheets showed enhanced sensing performance for HCHO gas, especially at low operating temperature. A series of characterization methods, including X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) were used to characterize their microstructures, morphologies, compositions, surface areas and so on. The sensing performance of GO@SnO 2 NF/NSs nanocomposites was optimized by adjusting the loading amount of GO ranging from 0.25% to 1.25%. The results showed the optimum loading amount of 1% GO in GO@SnO 2 NF/NSs nanocomposites not only exhibited the highest sensitivity value (R a /R g = 280 to 100 ppm HCHO gas) but also lowered the optimum operation temperature from 120 • C to 60 • C. The response value was about 4.5 times higher than that of pure hierarchical SnO 2 NF/NSs (R a /R g = 64 to 100 ppm). GO@SnO 2 NF/NSs nanocomposites showed lower detection limit down to 0.25 ppm HCHO and excellent selectivity against interfering gases (ethanol (C 2 H 5 OH), acetone (CH 3 COCH 3 ), methanol (CH 3 OH), ammonia (NH 3 ), methylbenzene (C 7 H 8 ), benzene (C 6 H 6 ) and water (H 2 O)). The enhanced sensing performance for HCHO was mainly ascribed to the high specific surface area, suitable electron transfer channels and the synergistic effect of the SnO 2 NF/NSs and GO nanosheets network.Molecules 2020, 25, 35 2 of 15 sensitivity, poor selectivity and/or relatively high optimum operation temperature. Hence, designing and developing gas sensors with high sensibility, excellent selectivity and lower optimum operation temperature is urgent and important.Graphene is a typical two-dimensional (2D) sheet of sp 2 bonded carbon with excellent electronic applications. Due to its unique physical and chemical properties, many efforts have been carried out on the application of graphene as sensing elements [12]. These advantages, including its high conductivity, large surface area and low electrical noise, make it a promising platform for preparing new sensors [13][14][15]. In order to prepare a new gas sensor with high sensing performance, low operation temperature and excellent selectivity, the combination of graphene and metal oxide semiconductors is a new strategy to enhance sensing performance compared to pure sensing materials [16]. Gaikwad et al. have reported a NH 3 gas sensor based on Polyaniline/Graphene Oxide (PANI/GO) by nanoemulsion method [17]. Sun et al. have synthesized rGO/ZnSnO 3 composites as a sensing material for detecting HCHO gas by a facile solution-based self-assembly synthesis method [18]. Rong et al. have prepared microstructures of SnO 2 @rGO nanocomposites for HCHO detection by facile thermal treatment ...

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Enhanced gas sensing properties to acetone vapor achieved by α-Fe2O3 particles ameliorated with reduced graphene oxide sheets

Cited by 125 publications

References 67 publications

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Synthesis and NO₂gas-sensing properties of coral-like indium oxide via a facile solvothermal method

Graphene Oxide@3D Hierarchical SnO2 Nanofiber/Nanosheets Nanocomposites for Highly Sensitive and Low-Temperature Formaldehyde Detection

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Enhanced gas sensing properties to acetone vapor achieved by α-Fe2O3 particles ameliorated with reduced graphene oxide sheets

Cited by 125 publications

References 67 publications

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Synthesis and NO2gas-sensing properties of coral-like indium oxide via a facile solvothermal method

Graphene Oxide@3D Hierarchical SnO2 Nanofiber/Nanosheets Nanocomposites for Highly Sensitive and Low-Temperature Formaldehyde Detection

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Product

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Synthesis and NO₂gas-sensing properties of coral-like indium oxide via a facile solvothermal method