MOF-derived porous Fe2O3 nanocubes combined with reduced graphene oxide for n-butanol room temperature gas sensing

Mo, Ruixue; Han, Dongqiang; Yang, Chengwei; Tang, Junyan; Wang, Fei; Li, Caolong

doi:10.1016/j.snb.2020.129326

Cited by 85 publications

(30 citation statements)

References 36 publications

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“…The requirements for the reaction vessels are high, the safety is poor, and the reaction cannot be visually observed [210][211][212][213][214][215][216] Interfacial interaction Reduces stacking and aggregation, maintains a high specific surface area There are many factors affecting the reaction, and the wettability, compatibility, diffusivity, and the surface structure of the materials on both sides of the interface will also affect the interfacial effect [217][218][219] preparation methods of GO/MOF composites, and their advantages and disadvantages. There are various methods for the preparation of GO/ MOF composites, and we have tried to list the commonly used preparation methods in the last five years in Table 3 and summarize their respective advantages and disadvantages.…”

Section: Preparation Methods Advantages Disadvantages Refsmentioning

confidence: 99%

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

Huang

Han

et al. 2021

J Porous Mater

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Graphene-oxide (GO) is an oxidized derivative of graphene. GO has a large number of oxygen-containing functional groups, including hydroxyl, carboxyl, and epoxy groups. The introduction of these groups makes its physical and chemical properties more complicated. For example, although GO films are impermeable to other liquids and even gases, they exhibit abnormally high permeance of water through the GO film. As a three-dimensional hollow material, metal-organic frameworks (MOFs) have a very large specific surface area and pore volume, and have a wide range of applications in catalysis, adsorption, and separations. Combining GO with MOFs can alter the distance between the layers of the GO to affect the transport and screening of specific molecules. This gives composites many potential applications in areas such as gas treatment and water treatment. This review summarizes the current status of GO/MOF composites, expanding on the following aspects: (1) We begin by reviewing the current status of research on GO and MOF with a focus on the physical properties. The mechanical strength of single-layer graphene is very weak, and in most solvents, GO spontaneously aggregates and is very difficult to effectively disperse. On the other hand, MOFs have high specific surface area, high crystallinity, and high porosity, but relatively low stability. Their relative instability greatly limited their practical applications. The formation of GO/MOF composites can take advantage of desirable properties of both material types, while improving their physical characteristics.(2) We next review the characteristics, preparation and applications of GO/MOF composites. At present, various GO/MOF composite materials, such as GO/ZIF-8, GO/MOF-5 have been prepared by in-situ synthesis and other methods. They are widely used in gas adsorption and separation, wastewater treatment applications, and molecular sieve applications. (3) We conclude this review by summarizing the opportunities for achieving composites materials with hydrophilic, antifouling, high-throughput, and high-repulsion properties by efficient, controllable, and low-cost methods. As GO/MOF technology improves, we suggest that these versatile materials have additional prospective applications in other areas, including as materials for medical applications.

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Section: Preparation Methods Advantages Disadvantages Refsmentioning

confidence: 99%

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

Huang

Han

et al. 2021

J Porous Mater

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“…10,11 The performance of gas sensors is largely dependent on the material used to detect the gas. Various MOS materials have been utilized to detect toxic gases, including Fe 2 O 3, 12 NiO, 13 Cr 2 O 3 , 14 ZnO, 15 Co 3 O 4 , 16 SnO 2 , 17 and WO 3 . 18 In particular, Fe 2 O 3 nanomaterials are widely used in the detection of combustible gases, toxic pollutant gases, and VOCs due to their high stability, low cost, high electrical conductivity, and environmental friendliness.…”

Section: ■ Introductionmentioning

confidence: 99%

“…So far, a variety of methods have been developed for the detection of DEA gas. − Metal-oxide-semiconductor (MOS)-based resistive gas sensors have become the most commonly employed solid-state gas sensors due to their low cost, high sensitivity, and simple device structure. , The performance of gas sensors is largely dependent on the material used to detect the gas. Various MOS materials have been utilized to detect toxic gases, including Fe 2 O 3, NiO, Cr 2 O 3 , ZnO, Co 3 O 4 , SnO 2 , and WO 3 . In particular, Fe 2 O 3 nanomaterials are widely used in the detection of combustible gases, toxic pollutant gases, and VOCs due to their high stability, low cost, high electrical conductivity, and environmental friendliness. , For example, Hai et al developed 3D ultraporous Fe 2 O 3 nanostructures for ethanol and acetone detection.…”

Section: Introductionmentioning

confidence: 99%

Generation of Oxygen Vacancies in Metal–Organic Framework-Derived One-Dimensional Ni_0.4Fe_2.6O₄ Nanorice Heterojunctions for ppb-Level Diethylamine Gas Sensing

et al. 2023

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Metal–organic frameworks (MOFs) are ideal sensing materials due to their distinctive morphologies, high surface area, and simple calcination to remove sacrificial MOF scaffolds. Oxygen vacancies (Ovs) can be efficiently generated by the thermal annealing of metal oxides in an inert atmosphere. Herein, MIL-53-based Fe and Fe/Ni-MOFs nanorices (NRs) were first prepared by using a solvothermal method, and then one-dimensional (1D) Fe2O3 and Ni0.4Fe2.6O4 NRs were derived from the MOFs after calcination at 350 °C in an air and argon (Ar) atmosphere, respectively. It was found that Ar-annealed Ni0.4Fe2.6O4 NRs have higher Ovs concentrations (82.11%) and smaller NRs (24.3 nm) than air-annealed NRs (65.68% & 31.5 nm). Beneficially, among the synthesized NRs, the Ar-Ni0.4Fe2.6O4 NRs show a higher sensitivity to diethylamine (DEA) (R a/R g = 23 @ 5 ppm, 175 °C), low detection limit (R a/R g = 1.2 @ 200 ppb), wide dynamic response (R a/R g = 93.5@ 30 ppm), high stability (30 days), and faster response/recovery time (4 s/38 s). Moreover, the 1D nanostructure containing heterostructures offers excellent sensing selectivity and a wide detection range from 200 ppb to 30 ppm in the presence of DEA. The outstanding gas sensing behavior can be attributable to synergistic impact, structural advantages, high concentration of Ovs, and the heterojunction interface, which can have profound effects on gas sensor performance. This study provides a unique technique for constructing high-performance gas sensors for ppb-level DEA detection and the formation of Ovs in metal oxides without the need for any additives.

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“…Not only the morphology and sensing response but also the selectivity of the NiFe 2 O 4 materials can be varied by designing synthetic strategies. Due to their controllable pore size and easily modifiable surface, metal–organic frameworks (MOFs) are used as sacrificial templates to prepare metal oxide gas sensing materials to obtain gas sensors with superior performance. − Furthermore, hollow MOF derivatives can provide more surface active sites and larger specific surface areas for the improved performance of gas sensing. For instance, Zhang et al obtained a porous NiFe 2 O 4 nano-octahedron with a hollow interior from Ni/Fe bimetallic MOFs, which has good gas sensitivity to toluene at low concentrations .…”

Section: Introductionmentioning

confidence: 99%

Metal–Organic Framework-Derived Porous NiFe₂O₄ Nanoboxes for Ethyl Acetate Gas Sensors

Liu

Wang

Zhang

et al. 2022

ACS Appl. Nano Mater.

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Detection of ethyl acetate (EtOAc) gas is important for human health and even the diagnosis of certain cancers. However, only a few materials were reported for EtOAc sensing. Herein, NiFe2O4 nanobox (NB) sensing materials with a porous hollow structure were prepared by annealing the self-sacrificed templates of hydrothermally synthesized metal–organic frameworks (MOFs). The superior selectivity of NiFe2O4 NB materials was observed toward EtOAc gas at low optimum working temperature. The response (R g /R a) of the NiFe2O4 NB-based sensor is 64.27 toward 200 ppm EtOAc at 120 °C, which is nearly three times greater than that of the sensor based on NiFe2O4 nanocubes (NCs) without a hollow structure. In addition, the NiFe2O4 NB-based sensor exhibited a limit of detection (LOD) of around 0.26 ppm. The enhanced gas sensing performance of the NiFe2O4 NB material may be associated with the unique porous hollow morphology and multiple surface element states, providing more active sites and facilitating the diffusion of gases. The NiFe2O4 NB material is expected to be a candidate material for EtOAc gas detection.

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MOF-derived porous Fe2O3 nanocubes combined with reduced graphene oxide for n-butanol room temperature gas sensing

Cited by 85 publications

References 36 publications

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

Generation of Oxygen Vacancies in Metal–Organic Framework-Derived One-Dimensional Ni_0.4Fe_2.6O₄ Nanorice Heterojunctions for ppb-Level Diethylamine Gas Sensing

Metal–Organic Framework-Derived Porous NiFe₂O₄ Nanoboxes for Ethyl Acetate Gas Sensors

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MOF-derived porous Fe2O3 nanocubes combined with reduced graphene oxide for n-butanol room temperature gas sensing

Cited by 85 publications

References 36 publications

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications

Generation of Oxygen Vacancies in Metal–Organic Framework-Derived One-Dimensional Ni0.4Fe2.6O4 Nanorice Heterojunctions for ppb-Level Diethylamine Gas Sensing

Metal–Organic Framework-Derived Porous NiFe2O4 Nanoboxes for Ethyl Acetate Gas Sensors

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Product

Resources

About

Generation of Oxygen Vacancies in Metal–Organic Framework-Derived One-Dimensional Ni_0.4Fe_2.6O₄ Nanorice Heterojunctions for ppb-Level Diethylamine Gas Sensing

Metal–Organic Framework-Derived Porous NiFe₂O₄ Nanoboxes for Ethyl Acetate Gas Sensors