Preparation of graphene-TiO2 photocatalysis materials by laser-induced hydrothermal method

Yang, Zhiru; He, Zhiguo; Wu, Wanli; Zhou, Yang

doi:10.1016/j.colcom.2021.100408

Cited by 16 publications

(5 citation statements)

References 56 publications

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“…Zhiru et al prepared a graphene-TiO 2 photocatalytic material using a hydrothermal method, which delivered degradation rates of 89% and 91% for MB and rhodamine B (RhB) under xenon lamp light source (Xe300UV) within 60 min, respectively, which are higher than those of pure TiO 2 nanoparticles. Graphene, as a carrier, effectively improves the photodegradation performance of TiO 2 toward pollutants [117]. prepared Ce 2+ -doped mesoporous TiO2 nanomaterials with high specific surface are using a hydrothermal method.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

“…Doping with Ce 2+ ions was found to not only increase t specific surface area of the mesoporous TiO2 nanoparticles, but also effectively inhibit t mesoporous collapse and transformation of the anatase phase into the rutile phase [11 Zhiru et al prepared a graphene-TiO2 photocatalytic material using a hydrotherm method, which delivered degradation rates of 89% and 91% for MB and rhodamine (RhB) under xenon lamp light source (Xe300UV) within 60 min, respectively, which a higher than those of pure TiO2 nanoparticles. Graphene, as a carrier, effectively improv the photodegradation performance of TiO2 toward pollutants [117].…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

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Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Yang

Chen

et al. 2022

Catalysts

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While modern industry has contributed to the prosperity of an increasingly urbanized society, it has also led to serious pollution problems, with discharged wastewater and exhaust gases causing significant environmental harm. Titanium dioxide (TiO2), which is an excellent photocatalyst, has received extensive attention because it is inexpensive and able to photocatalytically degrade pollutants in an environmentally friendly manner. TiO2 has many advantages, including high chemical stability, low toxicity, low operating costs, and environmental friendliness. TiO2 is an N-order semiconductor material with a bandgap of 3.2 eV. Only when the wavelength of ultraviolet light is less than or equal to 387.5 nm can the valence band electrons obtain the energy of the photons and pass through the conduction band and form photoelectrons, while the valence band, correspondingly, forms photogenerated holes, and light in other areas will not be generated. The most common methods used to improve the photocatalytic efficiency of TiO2 involve increasing its photoresponse range and reducing photogenerated-carrier coupling. The morphology, size, and structure of a heterojunction can be altered through element doping, leading to improved photocatalytic efficiency. Mainstream methods for preparing TiO2 are reviewed in this paper, with several excellent preparation schemes for improving the photocatalytic efficiency of TiO2 introduced. TiO2 is mainly prepared using sol-gel, solvothermal, hydrothermal, anodic oxidation, microwave-assisted, CVD and PVD methods, and TiO2 nanoparticles with excellent photocatalytic properties can also be prepared. Ti-containing materials are widely used to purify harmful gases, as well as contaminants from building materials, coatings, and daily necessities. Therefore, the preparation and applications of titanium materials have become globally popular research topics.

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Section: Hydrothermal Synthesismentioning

confidence: 99%

Section: Hydrothermal Synthesismentioning

confidence: 99%

Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Yang

Chen

et al. 2022

Catalysts

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“…The hydrothermal method, also known as the hydrothermal synthesis method, is a primary method for preparing nano-TiO 2 materials. [98][99][100][101][102][103][104] This method usually uses an aqueous solution as the reaction medium in a closed container (autoclave) and adds TiO 2 precursor. After heating to the reaction temperature, the precursor is dissolved, nucleated, grown, and then washed and dried to obtain TiO 2 nanometers powder.…”

Section: Hydrothermal Methodsmentioning

confidence: 99%

“…The hydrothermal method, also known as the hydrothermal synthesis method, is a primary method for preparing nano‐TiO 2 materials [98–104] . This method usually uses an aqueous solution as the reaction medium in a closed container (autoclave) and adds TiO 2 precursor.…”

Section: Synthesis Of Nano‐tio2mentioning

confidence: 99%

Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials

Zhao

Zhang

et al. 2022

Chemistry An Asian Journal

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TiO 2 photocatalysis, as an energy-saving, highefficiency and green technology, has a wide range of applications in sewage treatment, cancer treatment, hydrogen production, photocatalytic CO 2 reduction and photocatalytic sensors. However, the large band width (E g = 3.2 eV) of TiO 2 material hinders its practical application, which in turn leads to low visible-light utilization and low quantum yield.Therefore, the preparation of TiO 2 with high quantum yield and fast response to visible light has become a key topic in current photocatalyst research. This review discusses different photocatalytic applications, current synthetic techniques for the elaboration of nanostructures of several TiO 2 -based materials and recent advances in enhancing visible photocatalytic activity.

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“…At present, the main synthesis methods of nano TiO 2 include hydrothermal synthesis [19][20][21], hydrolysis [22][23] and sol-gel method [24], etc. The photocatalytic performance of TiO 2 is greatly affected on its physical properties such as morphology, particle size and speci c surface area, also the morphology and particle size of TiO 2 can be regulated by changing and optimizing the synthesis method, it is important to choose TiO 2 preparation method to improve its photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

In Situ synthesis of regular channel structure PSC-TiO2 with a remarkably photocatalytic degradation tetracycline efficiency

LI,

Deng,

Yang

et al. 2023

Preprint

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Incorporating carbon doping and regular channel structure peanut shell carbon-TiO2 (PSC-TiO2) is a challenge because the carbon is usually amorphous phase and TiO2 is agglomerated. Here, we propose an in situ synthetic strategy for the regular channel structure PSC-TiO2 by TiCl4 hydrolysis method, and the obtained PSC-TiO2 composites was used for tetracycline (TC) removal. The morphology and structure of as-prepared PSC-TiO2 composites were characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared (FT-IR) and UV-Vis diffuse reflectance spectra (UV-Vis) techniques. All results confirm the regular channel PSC-TiO2 synthesized successfully. As a result of unique channel structure the resulting PSC-TiO2 exhibits remarkably sunlight adsorption-photocatalytic efficiency for the degradation of TC. For 150 mg/L TC solution, the removal efficiency of TC in the PSC-TiO2 (87.0%) was higher than that in the PSC adsorption (39.4%) and pure TiO2 (70.7%) within 60 min. The obtained 15%PSC-TiO2 composite (400 °C, 2h) showed higher light absorption efficiency, C-O-Ti band and regular channel morphological structure, which resulted in the synergistic effect of PSC adsorption and TiO2 photocatalysis performance, and the current study provides a new insight for regular channel PSC-TiO2 preparation and application.

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Preparation of graphene-TiO2 photocatalysis materials by laser-induced hydrothermal method

Cited by 16 publications

References 56 publications

Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials

In Situ synthesis of regular channel structure PSC-TiO2 with a remarkably photocatalytic degradation tetracycline efficiency

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Preparation of graphene-TiO2 photocatalysis materials by laser-induced hydrothermal method

Cited by 16 publications

References 56 publications

Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Preparation and Photocatalytic Activities of TiO2-Based Composite Catalysts

Synthesis and Applications of TiO2‐based Nanostructures as Photocatalytic Materials

In Situ synthesis of regular channel structure PSC-TiO2 with a remarkably photocatalytic degradation tetracycline efficiency

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Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials