The development of high-performance room temperature NOX one-dimensional Na0.23TiO2/TiO2 compound gas sensor

He, Hailiu; Liu, Jiongjiang; Liu, Hongda; Pan, Qing‐Jiang; Zhang, Guo

doi:10.1016/j.colsurfa.2022.129444

Cited by 8 publications

(5 citation statements)

References 66 publications

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“…Furthermore, high relative humidity also greatly affects the performance of metal oxide sensors. However, Na 0.23 TiO 2 /TiO 2 NTs show exceptional NOx-sensing capabilities, even at 80% relative humidity [124]. These sensors have also demonstrated a seven-fold higher response compared to commercially available TiO 2 particles.…”

Section: Dopingmentioning

confidence: 99%

Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing

2023

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The search for sustainable technology-driven advancements in material synthesis is a new norm, which ensures a low impact on the environment, production cost, and workers’ health. In this context, non-toxic, non-hazardous, and low-cost materials and their synthesis methods are integrated to compete with existing physical and chemical methods. From this perspective, titanium oxide (TiO2) is one of the fascinating materials because of its non-toxicity, biocompatibility, and potential of growing by sustainable methods. Accordingly, TiO2 is extensively used in gas-sensing devices. Yet, many TiO2 nanostructures are still synthesized with a lack of mindfulness of environmental impact and sustainable methods, which results in a serious burden on practical commercialization. This review provides a general outline of the advantages and disadvantages of conventional and sustainable methods of TiO2 preparation. Additionally, a detailed discussion on sustainable growth methods for green synthesis is included. Furthermore, gas-sensing applications and approaches to improve the key functionality of sensors, including response time, recovery time, repeatability, and stability, are discussed in detail in the latter parts of the review. At the end, a concluding discussion is included to provide guidelines for the selection of sustainable synthesis methods and techniques to improve the gas-sensing properties of TiO2.

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Section: Dopingmentioning

confidence: 99%

Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing

2023

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“…In addition, MoO3/rGO (0.047 m 3 /g) has a larger pore volume than MoO3 (0.037 m 3 /g). The larger specific surface area and rich pore channels of MoO3/rGO allow for the exposure of many active sites to interact with the target gas [9,45]. The N 2 adsorption-desorption isotherms of MoO 3 and MoO 3 /rGO are depicted in Figure 5.…”

Section: Structural and Morphological Characterizationmentioning

confidence: 99%

“…In addition, MoO3/rGO (0.047 m 3 /g) has a larger pore volume than MoO3 (0.037 m 3 /g). The larger specific surface area and rich pore channels of MoO3/rGO allow for the exposure of many active sites to interact with the target gas [9,45]. The comparison shows that the Rct of the MoO3/rGO composites is obviously smaller than that of pure MoO3, which suggests that rGO helps to increase the charge migration rate in the composite [46].…”

Section: Structural and Morphological Characterizationmentioning

confidence: 99%

Conductometric Gas Sensor Based on MoO3 Nanoribbon Modified with rGO Nanosheets for Ethylenediamine Detection at Room Temperature

Liu,

Liu

et al. 2023

Nanomaterials

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An ethylenediamine (EDA) gas sensor based on a composite of MoO3 nanoribbon and reduced graphene oxide (rGO) was fabricated in this work. MoO3 nanoribbon/rGO composites were synthesized using a hydrothermal process. The crystal structure, morphology, and elemental composition of MoO3/rGO were analyzed via XRD, FT-IR, Raman, TEM, SEM, XPS, and EPR characterization. The response value of MoO3/rGO to 100 ppm ethylenediamine was 843.7 at room temperature, 1.9 times higher than that of MoO3 nanoribbons. The MoO3/rGO sensor has a low detection limit (LOD) of 0.235 ppm, short response time (8 s), good selectivity, and long-term stability. The improved gas-sensitive performance of MoO3/rGO composites is mainly due to the excellent electron transport properties of graphene, the generation of heterojunctions, the higher content of oxygen vacancies, and the large specific surface area in the composites. This study presents a new approach to efficiently and selectively detect ethylenediamine vapor with low power.

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“…Metal oxides consider the large and recommended materials for increasing energy storage through composites with polymer materials [ 30 , 31 , 32 , 33 , 34 , 35 ]. Silver ions work to increase the efficiency of transferring electrical charges and increase the electrochemical performance of materials [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Ag2S-Ag2O-Ag/poly-2-aminobenzene-1-thiol Nanocomposite as a Promising Two-Electrode Symmetric Supercapacitor: Tested in Acidic and Basic Mediums

et al. 2023

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A Ag2S-Ag2O-Ag/poly-2-aminobenzene-1-thiol (P2ABT) nanocomposite was prepared using the photopolymerization reaction using AgNO3 as an oxidant. The size of the nanocomposite was about 40 nm, in which the morphology was confirmed using TEM and SEM analyses. The functional groups of Ag2S-Ag2O-Ag/P2ABT were confirmed using FTIR; also, XRD confirmed the inorganic Ag2S, Ag, and Ag2O formation. This nanocomposite has great performance in supercapacitor applications, with it tested in acidic (1.0 M HCl) and basic mediums (1.0 M NaOH). This pseudo-capacitor has great performance that appeared through the charge time in an acid medium in comparison to the basic medium with values of 118 s and 103 s, correspondingly. The cyclic voltammetry (CV) analysis further confirmed the excellent performance of the supercapacitor material, as indicated by the large area under the cyclic curve. The specific capacitance (CS) and energy density (E) values (at 0.3 A/g) were 92.5 and 44.4 F/g and 5.0 and 2.52 W·h·Kg−1 in the acidic and basic mediums, correspondingly. The charge transfer was studied through a Nyquist plot, and the produced Rs values were 4.9 and 6.2 Ω, respectively. Building on these findings, our objective is to make a significant contribution to the progress of supercapacitor technology through a prototype design soon.

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The development of high-performance room temperature NOX one-dimensional Na0.23TiO2/TiO2 compound gas sensor

Cited by 8 publications

References 66 publications

Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing

Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing

Conductometric Gas Sensor Based on MoO3 Nanoribbon Modified with rGO Nanosheets for Ethylenediamine Detection at Room Temperature

Ag2S-Ag2O-Ag/poly-2-aminobenzene-1-thiol Nanocomposite as a Promising Two-Electrode Symmetric Supercapacitor: Tested in Acidic and Basic Mediums

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