Fabrication of TiO 2 nanorod assembly grafted rGO (rGO@TiO 2 -NR) hybridized flake-like photocatalyst

Lv, Kangle; Fang, Shun; Si, Lingling; Xia, Yang; Ho, Wingkei; Li, Mei

doi:10.1016/j.apsusc.2016.03.195

Cited by 87 publications

(29 citation statements)

References 55 publications

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“…The morphology of pure TiO2 represented nanorods (Figure 3b) and the length and diameter were approximately 0.8 μm and 20 nm, respectively. A previous report indicated that microsphere TiO2 were easily formed due to the aggregation of TiO2 nanoparticles to reduce the surface energy in the hydrothermal treatment under presence of PTO [32]. Meanwhile, the morphologies of ITO-TiO2 and rGO were investigated under different hydrothermal times.…”

Section: Semmentioning

confidence: 99%

Indium Tin-Oxide Wrapped 3D rGO and TiO2 Composites: Development, Characterization, and Enhancing Photocatalytic Activity for Methylene Blue

et al. 2019

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A hybrid material of indium tin-oxide (ITO) wrapped titanium dioxide and reduced graphene oxide (ITO-rGO and TiO2) was prepared using a facile hydrothermal technique. TiO2 nanorods were in situ grown on the surface of rGO (rGO and TiO2), and which was then assembled onto ITO substrate layer by layer with formation of a 3D structure. ITO-rGO and TiO2 exhibit low charge transfer resistance at the electrode-electrolyte interface and have good photoresponsive ability. Methylene blue (MB) can be effectively adsorbed and enriched onto ITO-rGO and TiO2 surface. The adsorption kinetics and thermodynamics of ITO-rGO and TiO2 were evaluated, showing that the exothermic and entropy-driven reaction were the main thermodynamic processes, and the Langmuir isotherm was the ideal model for adsorption fitting. Meanwhile, ITO greatly improved degradation of rGO and TiO2 because electrons can be collected by ITO before recombination and MB can easily enter into the 3D structure of rGO and TiO2. The highest photodegradation rate of MB reached 93.40% for ITO-rGO and TiO2 at pH 9. Additionally, ITO-rGO and TiO2 successfully solved the problems of being difficult to recycle and causing secondary pollution of traditional TiO2 catalysts. Therefore, ITO-rGO and TiO2 may be a potential photocatalyst for degrading organic pollutants in water.

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Section: Semmentioning

confidence: 99%

Indium Tin-Oxide Wrapped 3D rGO and TiO2 Composites: Development, Characterization, and Enhancing Photocatalytic Activity for Methylene Blue

et al. 2019

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“…The reduced graphene oxide (rGO) existence causes the redshift of light absorption and slower recombination. Besides that, enhancement of photocatalytic activity occurs because the rGO decorated TiO 2 (rGO-TiO 2 ) do strong interaction that initiates the electron injection and electron transport from TiO 2 to rGO so that inhibits electron-hole recombination [15]. In this work, TiO 2 will be synthesized with rGO simultaneous by a one-pot process using the hydrothermal method for improving photocatalytic properties by using rhodamine-B (RhB) as a dye for photocatalytic degradation experiment under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Highly photodegradation of organic dye pollutant RhB using TiO2-modified reduced graphene oxide

Hidayat

Wahyuningsih

Fadillah

et al. 2021

Preprint

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TiO2-modified reduced graphene oxide (TiO2-rGO) has been studied in one-process step synthesis via the hydrothermal method. In this study, the various concentrations of rGO were investigated and characterized by fourier transform infrared (FTIR), x-ray diffraction (XRD), scanning electron microscope (SEM), surface area analyzer (SAA), thermogravimetric analysis/differential thermal analysis (TGA/DTA), and spectroscopy UV-Vis. In addition, the photodegradation of rhodamine-B was studied by a batch system under visible light irradiation at wavelength 554 nm. The optimum experimental results showed that the presence of rGO in TiO2 nanostructures could improve the specific surface area until 248.58 m2 g− 1 and enhanced the photodegradation efficiency until 70.66% under visible light irradiation. The photocatalyst stability was evaluated for five cycles experiment and the performance have reduced 6.58% efficiency.

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“…As a result, many researchers have attempted to develop various 2D materials beyond graphene [34] or low-cost reduced graphene oxide (rGO) films on a variety of substrates by a simple spin-coating method [35]- [38]. The decoration of rGO with metal nanoparticles [39]- [42], TiO 2 [43]- [45], and other 2D materials [46]- [49] has also been shown to further improve the characteristics of rGO. For example, rGO combined with Ag nanoparticles improves the performance of photodetectors owing to the surface plasmon resonance effect [41], [50].…”

Section: Introductionmentioning

confidence: 99%

Low-Power, Large-Area and High-Performance CdSe Quantum Dots/Reduced Graphene Oxide Photodetectors

et al. 2020

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Graphene has unique and outstanding properties that make it a promising material for many applications. It has triggered considerable research in fields including solar cells, photodetectors, electrodes, and supercapacitors. Despite the favorable characteristics of devices using graphene have been widely explored, issues such as low absorbance, complex processing, and limited device size remain. Hence, we present large-area CdSe quantum dots (QDs)/reduced graphene oxide (rGO) films and corresponding photodetectors through a cost-effective and simple spin-coating method. As light turns on, CdSe QDs are excited and generate excess electron-hole pairs, leading to a significantly increased on/off current ratio of 2195 at a low bias voltage of −1 V, compared to that of photodetectors without CdSe QDs. Decorating the rGO film with CdSe QDs enables the wavefunction modulation and enhances the light harvesting. Our proposed high-performance photodetector can be operated at a low voltage, which is beneficial for applications in various green and low-power consumption devices. INDEX TERMS Large area, low power, photodetectors, reduce graphene oxide, CdSe quantum dots.

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Fabrication of TiO 2 nanorod assembly grafted rGO (rGO@TiO 2 -NR) hybridized flake-like photocatalyst

Cited by 87 publications

References 55 publications

Indium Tin-Oxide Wrapped 3D rGO and TiO2 Composites: Development, Characterization, and Enhancing Photocatalytic Activity for Methylene Blue

Indium Tin-Oxide Wrapped 3D rGO and TiO2 Composites: Development, Characterization, and Enhancing Photocatalytic Activity for Methylene Blue

Highly photodegradation of organic dye pollutant RhB using TiO2-modified reduced graphene oxide

Low-Power, Large-Area and High-Performance CdSe Quantum Dots/Reduced Graphene Oxide Photodetectors

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