Synergistic effect of cubic C3N4/ZnO/C hybrid composite for selective detection of sulfur dioxide

Miao, Xinjia; Zhao, Xiaojun; Qin, Hao; Jin, Qi; Chen, Yang; Cao, Zongqiang; Yang, Weiting; Qingji, Wang; Pan, Qinhe

doi:10.1007/s12598-022-02064-4

Cited by 13 publications

(4 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two-dimensional materials, owing to their substantial body surface ratio, abundant active sites, and controllable morphology, have emerged as highly promising candidates for gas sensing applications [ 20 , 21 , 22 , 23 , 24 , 25 ]. Following the successful detection of individual NOx gas molecules by graphene [ 26 ], the adsorption characteristics of NOx molecules onto other two-dimensional materials have also been extensively investigated.…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…Extensive research was conducted to identify the ideal morphology and crystallographic configuration of zinc-oxide-based chemical sensors, employing various synthesis methods [21][22][23][24]. Research findings have demonstrated that ZnO exhibits remarkable sensitivity to various gases [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Gas Sensing Performance of Zinc Oxide Nanoparticles Fabricated via Ochradenus baccatus Leaf

Khan,

Shaalan,

Ahmed

et al. 2024

Chemosensors

View full text Add to dashboard Cite

ZnO nanoparticles (NPs) were prepared by green synthesis using plant leaf extraction of Ochradenus baccatus and characterized by XRD, FESEM, HRTEM, and Raman spectroscopy techniques. Since elevated CO levels have been associated with inflammatory conditions, cardiovascular diseases, and respiratory disorders and the methane gas primarily produced by gut microbiota and linked to gastrointestinal disorders and other abnormal methane levels in breath samples, the nanoparticles were applied for gas sensor fabrication. Thus, the gas sensors fabricated using ZnO nanoparticles were investigated for CH4, H2, CO, and NO2 gases. The gas sensing was performed for the fabricated sensors at various operating temperatures and gas concentrations. Interestingly, leaf-extracted green synthesized ZnO NPs were more sensitive to CH4, CO, and NO2 gases than to H2. The results of sensing studies revealed that the nanoparticles exhibit a selectivity toward gas depending on the gas type. The sensor response was also studied against the humidity. These findings bridge between the laboratory and industry sectors for future gas sensors development, which can be used for exhaled breath analysis and serve as potential diagnostic tools for highly sensitive contagious diseases.

show abstract

“…Among them, ZnO, an n-type semiconductor, is broadly used for gas-sensing applications due to its multiple advantages such as wide direct bandgap (3.2 eV) at room temperature, easy synthesis, non-toxicity, and low production cost [12]. Furthermore, research activities to investigate doping, compositing, morphology modification, and heterostructure fabrication are proceeding to improve ZnO gas sensor performance [13][14][15]. In addition, oxygen vacancy formation is a simple method to improve the ZnO sensing ability [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Highly NO2-Sensitive Gas Sensor Based on a Defective ZnO Nanofilm and Using Electron Beam Lithography

Feng,

Giubertoni,

Cian

et al. 2023

Micromachines

View full text Add to dashboard Cite

Hazardous substances produced by anthropic activities threaten human health and the green environment. Gas sensors, especially those based on metal oxides, are widely used to monitor toxic gases with low cost and efficient performance. In this study, electron beam lithography with two-step exposure was used to minimize the geometries of the gas sensor hotplate to a submicron size in order to reduce the power consumption, reaching 100 °C with 0.09 W. The sensing capabilities of the ZnO nanofilm against NO2 were optimized by introducing an enrichment of oxygen vacancies through N2 calcination at 650 °C. The presence of oxygen vacancies was proven using EDX and XPS. It was found that oxygen vacancies did not significantly change the crystallographic structure of ZnO, but they significantly improved the electrical conductivity and sensing behaviors of ZnO film toward 5 ppm of dry air.

show abstract

Synergistic effect of cubic C3N4/ZnO/C hybrid composite for selective detection of sulfur dioxide

Cited by 13 publications

References 63 publications

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

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

Gas Sensing Performance of Zinc Oxide Nanoparticles Fabricated via Ochradenus baccatus Leaf

Fabrication of a Highly NO2-Sensitive Gas Sensor Based on a Defective ZnO Nanofilm and Using Electron Beam Lithography

Contact Info

Product

Resources

About