Titania based nanocomposites as a photocatalyst: A review

Sharon, Madhuri; Modi, Farha; Sharon, Maheshwar

doi:10.3934/matersci.2016.3.1236

Cited by 32 publications

(20 citation statements)

References 60 publications

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“…This calculation was done according to the previous assumption of the layer number calculation. The TiO2-fCNT diffractogram (Figure 3) shows the characteristic peaks at 26°, 38°, 48°, 54°, and 63° corresponding to the anatase crystalline phase [34]. Applying Scherrer's equation [35], the average crystal size of the anatase nanoparticles was about 6.3 nm.…”

Section: Transmission Electron Microscopy (Tem)mentioning

confidence: 99%

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Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

et al. 2019

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A hydrogen peroxide (H2O2) sensor and biosensor based on modified multi-walled carbon nanotubes (CNTs) with titanium dioxide (TiO2) nanostructures was designed and evaluated. The construction of the sensor was performed using a glassy carbon (GC) modified electrode with a TiO2–CNT film and Prussian blue (PB) as an electrocalatyzer. The same sensor was also employed as the basis for H2O2 biosensor construction through further modification with horseradish peroxidase (HRP) immobilized at the TiO2–fCNT film. Functionalized CNTs (fCNTs) and modified TiO2–fCNTs were characterized by Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray DifFraction (XRD), confirming the presence of anatase over the fCNTs. Depending on the surface charge, a solvent which optimizes the CNT dispersion was selected: dimethyl formamide (DMF) for fCNTs and sodium dodecylsulfate (SDS) for TiO2–fCNTs. Calculated values for the electron transfer rate constant (ks) were 0.027 s−1 at the PB–fCNT/GC modified electrode and 4.7 × 10−4 s−1 at the PB–TiO2/fCNT/GC electrode, suggesting that, at the PB–TiO2/fCNT/GC modified electrode, the electronic transfer was improved. According to these results, the PB–fCNT/GC electrode exhibited better Detection Limit (LD) and Quantification Limit (LQ) than the PB–TiO2/fCNT/GC electrode for H2O2. However, the PB film was very unstable at the potentials used. Therefore, the PB–TiO2/fCNT/GC modified electrode was considered the best for H2O2 detection in terms of operability. Cyclic Voltammetry (CV) behaviors of the HRP–TiO2/fCNT/GC modified electrodes before and after the chronoamperometric test for H2O2, suggest the high stability of the enzymatic electrode. In comparison with other HRP/fCNT-based electrochemical biosensors previously described in the literature, the HRP–fCNTs/GC modified electrode did not show an electroanalytical response toward H2O2.

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Section: Transmission Electron Microscopy (Tem)mentioning

confidence: 99%

“…The main peak of the 002 plane of fCNTs overlapped with the 101 plane of anatase in the TiO 2 -fCNT material. corresponding to the anatase crystalline phase [34]. Applying Scherrer's equation [35], the average crystal size of the anatase nanoparticles was about 6.3 nm.…”

Section: Transmission Electron Microscopy (Tem)mentioning

confidence: 99%

Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

et al. 2019

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“…Next, the gel is dried and calcined to get molecular or even nanostructured materials ( Figure 1 b) [ 18 ]. In the 1960s, sol–gel method was developed for synthesizing various materials including all kinds of mesoporous materials [ 9 ]. These mesoporous materials, which have high specific surface area, narrow pore size distribution and adjustable pore size, are mainly classified into silicon-based mesoporous materials (SiC, SiCN, SiOC, etc.)…”

Section: Synthesismentioning

confidence: 99%

“…Among them, doping is one of the most promising ways for enhancing the performance of mesoporous TiO 2 . Not only can the TiO 2 bandgap energy be reduced, but also the charge separation efficiency of TiO 2 can be improved by this strategy [ 9 , 11 ]. Generally, doping includes non-metal doping, metal doping and co-doping.…”

Section: Synthesismentioning

confidence: 99%

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Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Niu

Wang

et al. 2018

Materials

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Mesoporous materials are materials with high surface area and intrinsic porosity, and therefore have attracted great research interest due to these unique structures. Mesoporous titanium dioxide (TiO2) is one of the most widely studied mesoporous materials given its special characters and enormous applications. In this article, we highlight the significant work on mesoporous TiO2 including syntheses and applications, particularly in the field of photocatalysis, energy and biology. Different synthesis methods of mesoporous TiO2—including sol–gel, hydrothermal, solvothermal method, and other template methods—are covered and compared. The applications in photocatalysis, new energy batteries and in biological fields are demonstrated. New research directions and significant challenges of mesoporous TiO2 are also discussed.

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Photocatalytic Degradation Properties of Nano‐lignocellulose⋅NiNiO/GR‐TiO₂ Hollow Rod Composite for Methylene Blue

Pan

Guo

et al. 2022

ChemistrySelect

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The NiNiO/GR‐TiO2 magnetic hollow rod composites based on lignocellulose was prepared via electroless Ni and sol‐gel method to effectively solve that the composites were difficult to recycle and reuse. Rapid degradation of organic dyes was conducted. The element distribution, surface morphology, and functional groups were characterized via SEM, TEM, LSCM and FT‐IR, respectively. The structure was characterized by XRD and XPS. The photocatalytic properties were tested via TU‐1950 UV spectrophotometer. The EDS demonstrated the increase of S and N elements and FT‐IR results, indicating that methylene blue has been degraded by ring‐opening reaction. The results showed that the surface elements of the hollow rod structure were evenly distributed. The composite catalytic efficiency could reached 57.65 % and catalytic material prepared in vacuum was 93.34 % when the dosage of graphene was 50 mg. The composite materials photocatalytic system with addition of 20 mL EDTA could greatly improve the catalytic efficiency, which was up to 97.43 %.

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Titania based nanocomposites as a photocatalyst: A review

Cited by 32 publications

References 60 publications

Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Photocatalytic Degradation Properties of Nano‐lignocellulose⋅NiNiO/GR‐TiO₂ Hollow Rod Composite for Methylene Blue

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Titania based nanocomposites as a photocatalyst: A review

Cited by 32 publications

References 60 publications

Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Photocatalytic Degradation Properties of Nano‐lignocellulose⋅NiNiO/GR‐TiO2 Hollow Rod Composite for Methylene Blue

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Product

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Photocatalytic Degradation Properties of Nano‐lignocellulose⋅NiNiO/GR‐TiO₂ Hollow Rod Composite for Methylene Blue