Synthesis of Titanium Dioxide (TiO2)/Reduced Graphene Oxide (rGO) thin film composite by spray pyrolysis technique and its physical properties

Halim, Mohd Mahadi; Yam, F.K.; Kaus, Noor Haida Mohd

doi:10.1016/j.mssp.2020.105140

Cited by 47 publications

(18 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As presented in Figure 7 , it was found that increasing rGO concentrations in the composite tends to decrease energy band gap in each of the peel waste extract mediated synthesized TiO 2 /rGOs. In addition to this, it is noted that the presence of rGO influences light absorption properties of the composite significantly showing increase in light absorption intensity in the UV region and a red shift in the absorption edge around 400 nm as supported by the previous report [ 42 ]. Furthermore, the TiO 2 /rGO nanocomposites show a red shift in the absorption edge compared to single TiO 2 NPs.…”

Section: Resultssupporting

confidence: 81%

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Olana

Sabir

Bekele

et al. 2022

Bioinorganic Chemistry and Applications

View full text Add to dashboard Cite

Water pollution caused by various natural and artificial sources such as expansion of industrialization, rapid increment in population size, the threat of climate change, and development in urbanization takes a serious attention. Due to this fact, various protocols and techniques were adopted for the treatment of such polluted water. In the present findings, TiO2 nanoparticles (NPs) and TiO2/rGO nanocomposites (NCs) were synthesized using titanium tetra butoxide in the presence of Citrus sinensis (CS) and Musa acuminata (MA) peel waste extract as a capping, reducing, and stabilizing agent. The synthesized NPs and NCs were characterized using thermogravimetric-differential thermal analysis (TGA/DTA), X-ray diffraction (XRD), scanning electron microscope (SEM), high resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED) pattern, ultraviolet diffuse reflectance spectroscopy (UV-DRS), and Fourier transform infrared (FTIR) spectroscopy. The synthesized NPs and NCs were investigated as green alternative photocatalyst for the degradation of methylene blue (MB) dye under visible light irradiation. Thermal analysis results confirmed that the green synthesized TiO2 NPs were found to be too stable above 550°C. XRD analysis result showed that the average crystalline size of CS and MA mediated synthesized TiO2 NPs with various volume ratios was in the range of 7.3–27.3 nm and 13.4–22.4 nm, respectively. The average crystalline size of CS and MA peel extract template synthesized TiO2/rGO NCs was found to be in the range of 7.5–15.3 and 11.2–12.5 nm, respectively. The band gap energy was calculated to be in the range of 3.17–3.29 eV and 3.10–3.38 eV for the CS and MA mediated synthesized TiO2 NPs, respectively. E g of CS and MA peel extract template formed TiO2/rGO NCs was found to be in the range of 2.85–3.11 eV and 3.07–3.11 eV, respectively. SEM analysis proved that the various synthesized TiO2 NPs and TiO2/rGO NCs were spherical in shape and the absence of any other foreign materials confirmed the purity of the corresponding nanocatalysts. In addition, TEM, HRTEM, and SAED analysis confirmed that the structures of the synthesized nanocatalysts were spherical in shape and the catalysts were too crystalline and the result was found to fit with the XRD result. Among the synthesized various volume ratios of TiO2 nanocatalysts, high percentage of degradation (62% and 58.2%) was achieved using TiO2-2c and TiO2-2 m, respectively. Moreover, 94.28% and 94.25% of MB degradation were achieved in the presence of TiO2/rGO-1.5c and TiO2/rGO-1.5c nanocomposite photocatalysts, respectively.

show abstract

Section: Resultssupporting

confidence: 81%

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Olana

Sabir

Bekele

et al. 2022

Bioinorganic Chemistry and Applications

View full text Add to dashboard Cite

show abstract

“…The intensity ratio between these bands (ID/IG) can provide valuable information about the oxidation degree. For example, an intensity ratio ID/IG > 1 is typically associated with the formation of rGO [15,21]. In our case, the ID/IG ratio was ~1.07, confirming the successful formation of TiO2-rGO films.…”

Section: Resultssupporting

confidence: 77%

“…To date, sol-gel [10,11], aerosol-assisted chemical vapor deposition combined with dipcoating [13], and spray pyrolysis [15] techniques are commonly used for the preparation of TiO 2 -rGO films. In general, the above-mentioned methods make it possible to obtain TiO 2 -rGO films with uneven thicknesses, cracks and rough surfaces.…”

Section: Introductionmentioning

confidence: 99%

Crack-Free and Thickness-Controllable Deposition of TiO2–rGO Thin Films for Solar Harnessing Devices

Khamkhash

Molkenova

et al. 2022

Coatings

View full text Add to dashboard Cite

The use of thin films consisting of TiO2 and reduced graphene oxide (TiO2–rGO) in solar harnessing devices is gaining momentum thanks to improved charge-transporting characteristics. In this report, we propose a facile spin-coating methodology for the deposition of crack-free and thickness-controllable TiO2–rGO thin films. A range of characterization techniques were utilized to confirm the formation of the TiO2–rGO thin film. Improved charge-transporting properties of TiO2–rGO composite thin films were confirmed by measuring their photoelectrochemical (PEC) activity under simulated solar light illumination. In particular, it was found that the TiO2–rGO composite thin film yielded a better photocurrent response (~151.3 µA/cm2) than the bare TiO2 thin film (~71.6 µA/cm2) at 1.23 eV vs. the reversible hydrogen electrode (RHE). The obtained results suggested that rGO addition remarkably improves the charge-transporting properties in TiO2 films.

show abstract

“…Raman spectroscopy is a powerful evidence to verify the existence of the carbon sources in the calcined Cts/mTiO 2 composite (Figure 3b). For the mTiO 2 sample, E g peaks at 144, 198 and 639 cm −1 , B 1g(1) peak at 398 cm −1 and the A 1g +B 1g(2) peak at 514 cm −1 indicate the optical Ti−O modes of anatase TiO 2 [48] . However, the strong peak at 153 cm −1 is attributed to E g(1) vibrational mode of anatase TiO 2 , which is red shifted from 144 cm −1 due to the interaction of Cts and mTiO 2 [49] .…”

Section: Resultsmentioning

confidence: 96%

Facile Preparation of Chitosan‐modified Mesoporous Titanium Dioxide Film on Fused‐silica Capillary for Selective Enrichment of Phosphopeptides

Jiao

Wei

et al. 2021

ChemNanoMat

View full text Add to dashboard Cite

Chitosan (Cts), a positively charged natural polysaccharide, is employed to functionalize mesoporous titanium dioxide (mTiO2) nanoparticles. The prepared Cts/mTiO2 composite was used as a stationary phase to coat the inner wall of fused‐silica capillary and obtain uniform Cts/mTiO2 film. The Cts/mTiO2 film is applied to detect and enrich phosphopeptides in complex biological samples based on typical in‐tube solid phase microextraction (IT‐SPME) system. This unique Cts/mTiO2 film exhibits excellent enrichment performances of high selectivity (β‐casein and BSA in molar ratio of 1 : 1000), sensitivity (detection limit as low as 40 fmol of β‐casein tryptic digest solution) and high adsorption capacity (124.5 μg mg−1). Meanwhile, the Cts/mTiO2 film possesses preferable reusability and can be reused more than 10 times. These results confirm that the Cts/mTiO2 film possesses potential and satisfactory prospects in phosphoproteomics analysis.

show abstract

Synthesis of Titanium Dioxide (TiO2)/Reduced Graphene Oxide (rGO) thin film composite by spray pyrolysis technique and its physical properties

Cited by 47 publications

References 49 publications

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Crack-Free and Thickness-Controllable Deposition of TiO2–rGO Thin Films for Solar Harnessing Devices

Facile Preparation of Chitosan‐modified Mesoporous Titanium Dioxide Film on Fused‐silica Capillary for Selective Enrichment of Phosphopeptides

Contact Info

Product

Resources

About

Synthesis of Titanium Dioxide (TiO2)/Reduced Graphene Oxide (rGO) thin film composite by spray pyrolysis technique and its physical properties

Cited by 47 publications

References 49 publications

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO2/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO2/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Crack-Free and Thickness-Controllable Deposition of TiO2–rGO Thin Films for Solar Harnessing Devices

Facile Preparation of Chitosan‐modified Mesoporous Titanium Dioxide Film on Fused‐silica Capillary for Selective Enrichment of Phosphopeptides

Contact Info

Product

Resources

About

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation

Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO₂/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation