Hydrothermal synthesis of NO2 gas-sensitive and hydrophobic zinc oxide thin films

Padvi, M. N.; Harale, N.S.; Patil, P. S.; Dhas, Suprimkumar D.; Moholkar, A.V.

doi:10.1007/s10854-020-05063-2

Cited by 7 publications

(6 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solution combination was held for 30 min for ultrasonication treatment in an ultrasonic water bath before being transferred to a Teflon-lined autoclave. The hydrothermal syntheses were carried out in an electric oven at 150 °C for 12 h. The obtained white precipitate was then separated, filtered, rinsed with distilled water and EtOH several times, dried, and heated to 500 °C 13 , 15 . Hy-ZnO NPs' whitish powder was carefully gathered and stored till needed.…”

Section: Methodsmentioning

confidence: 99%

“…By lowering their band-gap energy, some highly effective photocatalysts including ZnO, TiO 2 , CeO 2 and SnO 2 can be used in this technique to shift their photocatalytic effectiveness towards visible light 10 – 13 . One of the photocatalysts that has been investigated the most is ZnO NPs in particular 14 , 15 . UV light can cause valence electrons to move onto the conduction band since the band gap energy of bulk ZnO NPs is 3.3 eV.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal fabrication, characterization and RSM optimization of cobalt-doped zinc oxide nanoparticles for antibiotic photodegradation under visible light

Meky,

Hassaan,

Fetouh

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Photodegradation is considered a significant method engaged for the elimination of organic pollutants from water. In this work, hydrothermal cobalt-doped zinc oxide nanoparticles (Hy-Co–ZnO NPs) loaded with 5, 10, and 15% cobalt were prepared in a hydrothermal way and were investigated as a photocatalyst for the Ciprofloxacin (CIPF) degradation under visible irradiation using LED-light. Characterization approaches such as FTIR, XRD, XPS, DRS UV–vis spectroscopy, SEM, TEM, BET, EDX and TGA were used for the investigation of the fabricated Hy-Co–ZnO NPs. The studies indicated that 10% Hy-Co–ZnO NPs was the most efficient catalyst for the CIPF photolysis compared to ZnO NPs and other Hy-Co–ZnO NPs with 5 and 15% cobalt content. Higher photocatalytic activity (> 98%) of 20 mg/L of CIPF solution was attained within 60 min. The reaction kinetics showed that the first-order model is suitable for displaying the rate of reaction and amount of CIPF elimination with R2 = 0.9883. Moreover, Central composite design (CCD) optimization of the 10% Hy-Co–ZnO NPs was also studied.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrothermal fabrication, characterization and RSM optimization of cobalt-doped zinc oxide nanoparticles for antibiotic photodegradation under visible light

Meky,

Hassaan,

Fetouh

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The gas response (%) is calculated for the material mentioned as follows. [32] (Table 1) Here R gas represents the resistance in the presence of the target gas, and R air represents the resistance in ambient air [34]. A typical HRTEM image of AgFeO 2 nanoparticles (Fig.…”

Section: Gas Sensing Measurementmentioning

confidence: 99%

Low Temperature NO2 Gas Sensing by Delafossite-Structured AgFeO2 Nanograins

More,

Bhise,

Zirpe

et al. 2024

Preprint

View full text Add to dashboard Cite

Nitrogen Dioxide (NO2) gas monitoring has become increasingly important to ensure the safety of human lives and the environment. The present study investigates the potential of low-cost delafossite-structured AgFeO2 nanoparticles to detect NO2 gas at low temperature. Highly porous, grain-like AgFeO2 nanoparticles were prepared by simple co-precipitation method and characterized using XRD, FESEM-EDS, TEM and BET analysis.AgFeO2 nanograins synthesized by conventional method, demonstrated gas-sensing performance with respect to sensitivity (1.89%), short response (51s) and, selectivity at low temperature of 50 oC, towards 8 ppm NO2 gas.

show abstract

“…Table 1 presents a concise summary of the advantages and limitations of each solution-based synthesis technique for obtaining a 3D-ZnO superstructure. Due to the simplicity of the process and equipment, as shown in Figure 2a, as well as its low-cost budget, high yields, and scalability, the hydrothermal technique has been utilized to obtain a 3D-ZnO superstructures [42][43][44]. Ma et al successfully synthesized a hemispherical 3D-ZnO, as shown in Figure 2b, through a hydrothermal technique, at 150 • C for 12 h [45].…”

Section: D-zno Superstructures' Synthesis and Their Pec Performancementioning

confidence: 99%

3D-ZnO Superstructure Decorated with Carbon-Based Material for Efficient Photoelectrochemical Water-Splitting under Visible-Light Irradiation

et al. 2023

View full text Add to dashboard Cite

The depletion of fossil fuels is a worldwide problem that has led to the discovery of alternative energy sources. Solar energy is the focus of numerous studies due to its huge potential power and environmentally friendly nature. Furthermore, one such area of study is the production of hydrogen energy by engaging photocatalysts using the photoelectrochemical (PEC) method. 3-D ZnO superstructures are extensively explored, showing high solar light-harvesting efficiency, more reaction sites, great electron transportation, and low electron-hole recombination. However, further development requires the consideration of several aspects, including the morphological effects of 3D-ZnO on water-splitting performance. This study reviewed various 3D-ZnO superstructures fabricated through different synthesis methods and crystal growth modifiers, as well as their advantages and limitations. Additionally, a recent modification by carbon-based material for enhanced water-splitting efficiency has been discussed. Finally, the review provides some challenging issues and future perspectives on the improvement of vectorial charge carrier migration and separation between ZnO as well as carbon-based material, using rare earth metals, which appears to be exciting for water-splitting.

show abstract

Hydrothermal synthesis of NO2 gas-sensitive and hydrophobic zinc oxide thin films

Cited by 7 publications

References 50 publications

Hydrothermal fabrication, characterization and RSM optimization of cobalt-doped zinc oxide nanoparticles for antibiotic photodegradation under visible light

Hydrothermal fabrication, characterization and RSM optimization of cobalt-doped zinc oxide nanoparticles for antibiotic photodegradation under visible light

Low Temperature NO2 Gas Sensing by Delafossite-Structured AgFeO2 Nanograins

3D-ZnO Superstructure Decorated with Carbon-Based Material for Efficient Photoelectrochemical Water-Splitting under Visible-Light Irradiation

Contact Info

Product

Resources

About