Synthesis of Citrus Limon mediated SnO2-WO3 nanocomposite: Applications to photocatalytic activity and electrochemical sensor

Manjunatha, A.S.; Pavithra, N. S.; Shivanna, M.; Nagaraju, G.; Ravikumar, C.R.

doi:10.1016/j.jece.2020.104500

Cited by 32 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spectra show a broad peak at 607 cm −1 and 637 cm −1 for WO 3 -SnO 2 and WO 3 -SnO 2 /Au nanocomposite, respectively. After calculation of vibration energies, it has been confirmed that these peaks are due to the intermixing of WO 3 and SnO 2 [31]. There is no other significance peaks in the spectra which is due to the absence of any impurities in the prepared sample.…”

Section: Resultsmentioning

confidence: 73%

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Nihal¹,

Sharma²,

Sharma³

et al. 2023

Phys. Scr.

View full text Add to dashboard Cite

In this present work, we synthesized WO3-SnO2 and Au doped WO3-SnO2 nanocomposite by hydrothermal method. The optical characterization has been done by UV/Vis spectroscopy to determine the band gap of pure and gold (Au) doped WO3-SnO2. Fourier transformed Infra red (FTIR) spectroscopy has been used to confirm the chemical bonding between Au and WO3-SnO2 nanocomposite. The X-ray Diffraction (XRD) technique was used to study the structural aspects of prepared materials. Field Emission Scanning Electron Microscopy (FESEM) has been used to investigate morphological characteristics of as prepared nanocomposite. The doping of Au was further confirmed by Energy-Dispersive X-ray spectroscopy (EDS) technique. The sensing properties have been studied from the I-V measurement of WO3-SnO2/Au nanocomposite for Benzene. The sensing parameters such as sensitivity (response), operating temperature and response and recovery time were calculated for benzene vapors.

show abstract

Section: Resultsmentioning

confidence: 73%

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Nihal¹,

Sharma²,

Sharma³

et al. 2023

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Dye photodegradation was hastened at a catalyst dosage of 60 mg for 120 min. Adding an extra 60 mg of catalyst may have resulted in a reduction in activity due to screening and light scattering [57,58]. The efficiency of photocatalytic degradation when exposed to UV light is strongly influenced by the concentration of the dye present.…”

Section: Photocatalytic Activity Of the Nivo 3 For The Degradation Of...mentioning

confidence: 99%

Hydrothermal synthesis and characterization of nanostructured nickel vanadate for supercapacitor and photocatalytic applications

Naik R,

Narsaiah,

Justin

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

We successfully synthesised nickel vanadate (NiVO3) nanocomposite by an inexpensive hydrothermal technique. Several analytical methods have been employed to characterise the synthesised nanocomposite. The crystal structure of NiVO3 is orthorhombic, and its crystallite size is around 10.3 nm. The NiVO3 nanocomposite has an optical band gap of 2.62 eV from the absorption spectra analysis. At a current density of 5 Ag-1, the NiVO3 nanocomposite exhibits a specific capacitance value of 398 Fg-1 and a retention rate of almost 90% after 2000 cycles. Furthermore, stability studies show that at a current density of 5 Ag-1, 90% of the capacitance is retained for 4000 cycles. The photocatalytic studies to break down the industrial pollutant Fast Orange Red (F-OR) dye show a 98.7% decolourization rate after 120 minutes of exposure to UV light irradiation. These features promote the creation of such nanocomposites for practical energy and environmental applications while providing a deeper understanding of the material's characteristics.

show abstract

“…The other region represents the lowfrequency region, which denotes the capacitance of the electrode and which was given the shape of a straight line in order to represent it accurately. The charge transfer resistance Rct was calculated from the diameter of the semicircle in the Nyquist plot [56]. When the EIS technique was used, it was possible to obtain the equivalent circuit of the system which was given in Figure 11(b) inset.…”

Section: Mechanism Of Photocatalytic Degradationmentioning

confidence: 99%

Probe Sonicated Synthesis of Bismuth Oxide (Bi₂O₃): Photocatalytic Application and Electrochemical Sensing of Ascorbic Acid and Lead

Kusuma¹,

Manju²,

Ravikumar³

et al. 2022

Journal of Nanomaterials

View full text Add to dashboard Cite

A simple and low-cost and highly calibrated probe sonication method was used to prepare bismuth oxide nanoparticles (Bi2O3 NPs). The formation of a well-crystalline sample at the end of the product has been further calcined at 600°C for 2 hrs. The powder X-ray diffraction (PXRD) patterns of the NPs substantiated the monoclinic structure (space group P21/c), and the average crystallite size was found to be 60 nm, which was also confirmed by transmission electron microscopic (TEM) studies. Scanning electron microscopic (SEM) images depicted highly porous Bi2O3 NPs with little agglomeration. Utilizing diffused reflectance spectra (DRS) data, the energy bandgap ( E g ) value of 3.3 eV was deduced for Bi2O3 NPs, and their semiconductor behavior has been confirmed. Two dyes, methylene blue (MB) and acid green (AG) were utilized for degradation studies using Bi2O3 NPs under UV light irradiation (from 0 to 120 min). The photocatalytic degradation was found to be maximum for MB (93.45%) and AR (97.80%) dyes. Cyclic voltammetric (CV) and sensor studies using the electrochemical impedance spectroscopy (EIS) were performed. The specific capacitance value of 25.5 Fg-1 was deduced from the cyclic voltammograms of the Bi2O3 electrode in 0.1 N HCl with a scan rate of 10 to 50 mV/s. From the obtained EIS data, the Bi2O3 electrode showed pseudocapacitive characteristics. The prepared electrodes also exhibited high sensitivity towards the detection of ascorbic acid and lead. Hence, sonochemically synthesized Bi2O3 NPs are possibly hopeful for excellent photocatalytic and electrochemical sensing of biomolecules.

show abstract

Synthesis of Citrus Limon mediated SnO2-WO3 nanocomposite: Applications to photocatalytic activity and electrochemical sensor

Cited by 32 publications

References 31 publications

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Hydrothermal synthesis and characterization of nanostructured nickel vanadate for supercapacitor and photocatalytic applications

Probe Sonicated Synthesis of Bismuth Oxide (Bi₂O₃): Photocatalytic Application and Electrochemical Sensing of Ascorbic Acid and Lead

Contact Info

Product

Resources

About

Synthesis of Citrus Limon mediated SnO2-WO3 nanocomposite: Applications to photocatalytic activity and electrochemical sensor

Cited by 32 publications

References 31 publications

Au decorated WO3-SnO2 nanocomposite for enhanced benzene vapors sensing performance

Au decorated WO3-SnO2 nanocomposite for enhanced benzene vapors sensing performance

Hydrothermal synthesis and characterization of nanostructured nickel vanadate for supercapacitor and photocatalytic applications

Probe Sonicated Synthesis of Bismuth Oxide (Bi2O3): Photocatalytic Application and Electrochemical Sensing of Ascorbic Acid and Lead

Contact Info

Product

Resources

About

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Au decorated WO₃-SnO₂ nanocomposite for enhanced benzene vapors sensing performance

Probe Sonicated Synthesis of Bismuth Oxide (Bi₂O₃): Photocatalytic Application and Electrochemical Sensing of Ascorbic Acid and Lead