Room‐Temperature Hydrogen Sensing with Heteronanostructures Based on Reduced Graphene Oxide and Tin Oxide

Russo, Patrícia A.; Donato, Nicola; Leonardi, ﻿Salvatore; Baek, Seunghwan; Conte, Donato E.; Neri, G.; Pinna, Nicola

doi:10.1002/ange.201204373

Cited by 45 publications

(50 citation statements)

References 48 publications

(55 reference statements)

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“…Graphene oxide was synthesized from synthetic graphite powder (Aldrich) using am odified Hummers method. [67,68] The details of the synthesis are given in the Supporting Information. The amorphous carbon (carbon black Vulcan XC72R) was purchased from Cabot.…”

Section: Methodsmentioning

confidence: 99%

Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating

Zhang

Santangelo

Fazio

et al. 2015

Chemistry A European J

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TiO2 is frequently combined with carbon materials, such as reduced graphene oxide (RGO), to produce composites with improved properties, for example for photocatalytic applications. It is shown that heating conditions significantly affect the interface and photocatalytic properties of TiO2 @C, and that microwave irradiation can be advantageous for the synthesis of carbon-based materials. Composites of TiO2 with RGO or amorphous carbon were prepared from reaction of titanium isopropoxide with benzyl alcohol. During the synthesis of the TiO2 nanoparticles, the carbon is involved in reactions that lead to the covalent attachment of the oxide, the extent of which depends on the carbon characteristics, heating rate, and mechanism. TiO2 is more efficiently stabilized at the surface of RGO than amorphous carbon. Rapid heating of the reaction mixture results in a stronger coupling between the nanoparticles and carbon, more uniform coatings, and smaller particles with narrower size distributions. The more efficient attachment of the oxide leads to better photocatalytic performance.

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Section: Methodsmentioning

confidence: 99%

Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating

Zhang

Santangelo

Fazio

et al. 2015

Chemistry A European J

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“…Introduction of nanoparticles in the base matrix helps in preventing agglomeration of layered materials (such as graphene), and increase the surface area by forming three dimensional networks; an essential part to improve the base matrix performance during sensing [41]. Also, it is reported that catalytic metals such as palladium normally improves the adsorption/desorption kinetics [62].…”

Section: Relevance Of Materialsmentioning

confidence: 99%

Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas

Kashyap¹,

Sinha²,

Barman³

et al. 2020

Multilayer Thin Films - Versatile Applications for Materials Engineering

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Hydrogen is one of the most useful but dangerous gases because of its broad combustion range and small ignition temperature. Currently, there is a great need for hydrogen detectors with selectivity, high sensitivity and reliable operations in view of its safe production, storage, transportation and other applications. In this regard, nano thin films of two dimensional materials like graphene, graphene oxide (GO) and reduced graphene oxide (rGO) have immense promise because their material attributes can be exceptionally tuned to achieve the desired characteristics. Also graphene oxide and reduced graphene oxide serve as potential sensing hosts due to the presence of functional groups on their surfaces. In this chapter, an attempt has been made to compare the work done in the field of hydrogen sensors using pure graphene and graphene derivatives such as graphene oxide and reduced graphene oxide. The response parameters like sensitivity, stability, selectivity, response time, recovery time, detection limit, linearity, dynamic range, and working temperatures for various graphene based sensors have been elaborately compared. Finally, a conclusion and future outlook on nano scale thin film of graphene and graphene oxides for gas sensing have been briefly discussed.

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“…NiO-SiO2 heterojunction nanofibers exhibited better H2 sensing performance than pure SnO2 nanofibers and also extremely fast response and recovery with 100 ppm H2 at 320 o C. [159] He et al [160] reported that MOF-5 crystals coated with Au thin shells show a surface-enhanced Raman scattering signal that functions as a gas sensor for selective detection of CO2. Russo et al [161] designed Pt-SnO2-rGO heterostructures as a H2 sensor exhibiting high response to H2 at trace concentrations in a range of 0.5-3.0 % under ambient conditions with response and recovery times of several seconds. This sensing enhancement was related to heterojunction barrier at an interface of SnO2-rGO heterostructures and the function of Pt nanoclusters as a catalytic promoter.…”

Section: Semiconductor Gas Nanosensorsmentioning

confidence: 99%

Progress through synergistic effects of heterojunction in nanocatalysts ‐ Review

Cuong

Quang

2020

Vietnam Journal of Chemistry

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There are major advances in the development of the nanostructured materials to enhance the reaction performance in catalytic field. Recent efforts have shown that high conversion efficiency and stability of efficient nanocatalysts can be achieved by combining the intrinsic properties of single components into heterostructures. The unprecedented combination affords the integrated nanocatalysts capable of overcoming the limitations of single components and addressing the issues of the assessment of the efficiency of the catalytic converters. The present review gives a concise overview of the heterostructured nanoarchitectures with a focus of the tailoring of their structural geometry, self‐construction and surface chemistry to effectively create integrated catalysts with multi‐functionalities. The novel integrated catalysts present in the critical review were emphasized these concepts by undergoing inherent synergistic effects in their heterojunction structures to emerge superior catalytic performance and high selectivity for promising applications. Various types of the integrated nanocatalysts including coupled particles, porous composites, organized hybrids, assembled films, and biomimetic replicas are presented in respect to the discussion of expressive statements for widespread emerging applications in artificial photosynthesis, graphene‐based catalysts, electrochemical gas sensing, water‐gas shift reaction, and methane fuel generation.

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Room‐Temperature Hydrogen Sensing with Heteronanostructures Based on Reduced Graphene Oxide and Tin Oxide

Cited by 45 publications

References 48 publications

Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating

Stabilization of Titanium Dioxide Nanoparticles at the Surface of Carbon Nanomaterials Promoted by Microwave Heating

Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas

Progress through synergistic effects of heterojunction in nanocatalysts ‐ Review

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