Construction of MOF-derived In2O3/g-C3N4/rGO nanostructures to enhance NOx gas-sensitive properties at room temperature

Liu, Jiongjiang; Liu, Yuanyuan; Liu, Hongda; Pan, Qing‐Jiang; Zhang, Guo

doi:10.1016/j.snb.2023.133308

Cited by 15 publications

(3 citation statements)

References 50 publications

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“…Specifically, the diffraction peaks at 21.5°, 30.6°, 35.4°, 51.0°and 60.7°c orrespond to the (211), ( 222), ( 400), ( 134), ( 440) and (622) crystal faces of In 2 O 3 , respectively. However, no significant diffraction peaks belonging to rGO (2θ = 24°, 42.8°) can be observed in rGO/In 2 O 3 and Ar-rGO/In 2 O 3 , which may be related to the low amount and low diffraction intensity of rGO [17][18][19]. Meanwhile, it's worth noting that, after rGO modification and Ar plasma treatment, the peaks of In 2 O 3 don't show significant weakening and broadening, suggesting that both strategies don't have a noticeable effect on the crystal structure.…”

Section: Materials Characterizationmentioning

confidence: 89%

Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Guo,

Zeng,

Zhao

et al. 2024

Phys. Scr.

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We successfully constructed a high-performance In2O3 based triethylamine sensor using rGO combined with Ar plasma treatment (Ar-rGO/In2O3). The Ar plasma treatment and rGO doping did not cause significant changes to the crystal structure of In2O3 hollow nanospheres, but increased the content of oxygen vacancies in In2O3, while making the structure of In2O3 hollow nanospheres more porous and thin-walled. The gas sensitivity test results show that this new Ar-rGO/In2O3 based sensor has the advantages of high response (Ra/Rg=172 to 100 ppm, 4.2 times that of pure In2O3 material), low detection limit (0.5 ppm), fast response speed (1 s), and good stability to triethylamine. It also has excellent selectivity, repeatability, and long-term stability. This work is of great significance for understanding the relationship between response and surface oxygen vacancies of sensitive materials, as well as promoting the development of new triethylamine sensors.

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Section: Materials Characterizationmentioning

confidence: 89%

Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Guo,

Zeng,

Zhao

et al. 2024

Phys. Scr.

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“…Consequently, there is a growing need for nitrogen oxide gas detectors characterized by high sensitivity, selectivity and stability. Various methods of NO X detection have been published, including electrochemical gas sensors [ 11 , 12 , 13 ], optical gas sensors [ 14 ], and semiconductor gas sensors [ 15 , 16 , 17 ]. Compared with alternative gas sensors, semiconductor gas detectors display heightened sensitivity and affordability.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of NO and NO2 on Two-Dimensional As, Sb, and Bi Materials: First-Principles Insights

Zhang,

Chen,

Fang

et al. 2024

Materials

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To address the most significant environmental challenges, the quest for high-performance gas sensing materials is crucial. Among numerous two-dimensional materials, this study investigates the gas-sensitive capabilities of monolayer As, Sb, and Bi materials. To compare the gas detection abilities of these three materials, we employ first-principles calculations to comprehensively study the adsorption behavior of NO and NO2 gas molecules on the material surfaces. The results indicate that monolayer Bi material exhibits reasonable adsorption distances, substantial adsorption energies, and significant charge transfer for both NO and NO2 gases. Therefore, among the materials studied, it demonstrates the best gas detection capability. Furthermore, monolayer As and Sb materials exhibit remarkably high capacities for adsorbing NO and NO2 gas molecules, firmly interacting with the gas molecules. Gas adsorption induces changes in the material’s work function, suggesting the potential application of these two materials as catalysts.

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“…SnO 2 -Sn 3 O 4 materials with heterostructures were prepared by Zeng et al 11 using the solvothermal method and annealing, and their special layered microsphere structure and the formation of heterojunctions enabled them to exhibit high sensitivity and excellent selectivity for NO 2 . Liu et al 12 successfully prepared In 2 O 3 /g-C 3 N 4 /rGO composites by the solvothermal method. The effective combination of In 2 O 3 hollow nanotubes, g-C 3 N 4 nanosheets and rGO nanosheets resulted in the formation of a heterojunction structure.…”

Section: Introductionmentioning

confidence: 99%

UiO-66 metal–organic framework-derived ZrO₂/ZnO mesoporous materials for high-efficiency detection of NO₂ at room temperature

Yang,

Peng,

Lin

et al. 2023

J. Mater. Chem. A

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Construction of MOF-derived In2O3/g-C3N4/rGO nanostructures to enhance NOx gas-sensitive properties at room temperature

Cited by 15 publications

References 50 publications

Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Adsorption Behavior of NO and NO2 on Two-Dimensional As, Sb, and Bi Materials: First-Principles Insights

UiO-66 metal–organic framework-derived ZrO₂/ZnO mesoporous materials for high-efficiency detection of NO₂ at room temperature

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Construction of MOF-derived In2O3/g-C3N4/rGO nanostructures to enhance NOx gas-sensitive properties at room temperature

Cited by 15 publications

References 50 publications

Ar plasma-engraved rGO/In2O3 hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Ar plasma-engraved rGO/In2O3 hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Adsorption Behavior of NO and NO2 on Two-Dimensional As, Sb, and Bi Materials: First-Principles Insights

UiO-66 metal–organic framework-derived ZrO2/ZnO mesoporous materials for high-efficiency detection of NO2 at room temperature

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Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

Ar plasma-engraved rGO/In₂O₃ hollow nanospheres with rich oxygen vacancies for enhanced triethylamine detection

UiO-66 metal–organic framework-derived ZrO₂/ZnO mesoporous materials for high-efficiency detection of NO₂ at room temperature