Hydrothermal synthesis of graphene/TiO 2 /CdS nanocomposites as efficient visible-light-driven photocatalysts

Tian, Zhidan; Yu, Ning; Cheng, Yanhua; Wang, Zhaojie; Chen, Zhigang; Zhang, Lisha

doi:10.1016/j.matlet.2017.02.048

Cited by 35 publications

(17 citation statements)

References 17 publications

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“…Another approach to the modification of TiO 2 is by using different modification techniques such as chemical vapor deposition [24], atomic layer deposition [25], sol-gel method [26] and hydrothermal method [27]. Hydrothermal method shows promising results for the decoration as, for example, in the case of cadmium sulfide [28], iron oxide [29,30], and silicon [31]. With increased temperature and pressure, the dissolution of precursors and the reaction rate are accelerated.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole

Čižmar

Kojić

Rukavina³

et al. 2020

Catalysts

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In this study, titanium dioxide nanotubes were prepared by electrochemical anodization technique and modified with an aqueous solution of FeCl3 using hydrothermal synthesis method to control the amount and distribution of iron compounds on the anatase TiO2 nanotubes. The objective was to synthesize immobilized FeOOH@TiO2 or Fe2O3@TiO2 photocatalysts designed for the flow-through reactor systems; to investigate thermal treatment effect on the photocatalytic efficiency; to determine appropriate Fe-compounds concentration for the maximum photocatalytic activity improvement, and to explain the mechanism responsible for the enhancement. The photocatalysts were tested for the degradation of 1H-benzotriazole in water under UV/solar light irradiation. Up to two times increase in the photocatalytic activity was obtained when TiO2 nanotubes were modified with 0.8 mM Fe. At higher Fe concentrations (8 mM and 80 mM), the photocatalytic activity of the given photocatalysts decreased. To confirm the formation of FeOOH or Fe2O3 species, and to clarify the mechanism of photoactivity, X-ray diffraction (XRD), Raman spectroscopy (RS), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDS) and UV-Vis spectroscopy were used.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole

Čižmar

Kojić

Rukavina³

et al. 2020

Catalysts

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“…The use of precursors with better deposition routes is more important than the utilization of less volatile precursors, in this respect, some The surface area of GO-TiO 2 -0.55CdS (157.5 m 2 /g) result in higher photocatalytic activity [184] delivery systems are used to generate vapor precursors and deliver them to the reactor. Different types of delivery systems are classified based on the phase of the precursors (liquid, solid, and gas).…”

Section: Cvd Methodsmentioning

confidence: 99%

A review on the synthesis of the TiO2-based photocatalyst for the environmental purification

Aboualigaledari

Rahmani

2021

jcc

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“…Yet, the wide band gap (3.0-3.2V) limits the optical response in the UV region. For TiO 2 , the highest recombination time is 10 − 9 seconds while the minimal reaction time between pollutants and the chemical reaction of electrons varies between 10 − 8 -10 − 2 seconds (Lu et al 2017, Tian et al 2017). The electron-hole shaped through the pair is recon gured via difference in the time period.…”

Section: Introductionmentioning

confidence: 99%

Enhanced ultraviolet-visible photocatalysis of RGO/equaixial geometry TiO2 composites on degradation of organic dyes in water

Hasan

Wang

et al. 2021

Environ Sci Pollut Res

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The reduced graphene oxide dopped equaixial geometry TiO 2 (rGO/egTiO 2 ) composite as photocatalyst was synthesized hydrothermally with various mass ratios of tetrabutyl titanate. The photocatalyst is considered to be rGO/equaixial geometry TiO 2 in terms of modifying the combined reduced graphene Oxide and TiO 2 . The rGO plays a vital role in rGO/egTiO 2 composite as photocatalysts were analyzed in methylene blue (MB) and rhodamine B (RhB) photocatalytic degradation under UV and simulated solar light irradiation. This synthesized catalyst was characterized by various analytical techniques such as XPS, XRD, SEM, BET and TEM. The rGO/egTiO 2 composite exhibits enhanced photo-catalytic performance with degradation rate of 97.5 and 97% on RhB and MB for 60 min under UV radiation respectively, while the degradation rate of 94 and 92 % was observed on the same dyes for 6 h under the simulated sunlight radiation. The enhanced photocatalytic performance of the rGO/egTiO 2 composite under ultraviolet irradiation source was owing to a high separation e ciency of the photo-induced electron-hole pairs, while the photocatalytic performance under simulated sunlight radiation was due to the photosensitive and charge separator behavior of rGO. This offers us an excellent potential of signi cant photo catalytic activity for the removal of organic contaminants from wastewater.

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Hydrothermal synthesis of graphene/TiO 2 /CdS nanocomposites as efficient visible-light-driven photocatalysts

Cited by 35 publications

References 17 publications

Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole

Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole

A review on the synthesis of the TiO2-based photocatalyst for the environmental purification

Enhanced ultraviolet-visible photocatalysis of RGO/equaixial geometry TiO2 composites on degradation of organic dyes in water

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