Twice heat-treating to synthesize TiO2/carbon composites with visible-light photocatalytic activity

Wang, Xiaodong; Xue, Xiangxin; Li, Qiuye; Zhang, Min; Yang, Jianjun

doi:10.1016/j.matlet.2012.08.021

Cited by 13 publications

(4 citation statements)

References 22 publications

(19 reference statements)

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“…2b-2e) were corresponded to the crystalline of pristine TiO 2 powder (in Fig. 2a), whereas there was no activated carbon peak appeared on these which because of itsamorphous structure andvery low content [2,12]. In addition, the intensity of the anatase SHDN ș q) seem to be decreased with increasing amount of AC loading, i.e., the 16.5 wt% sheet sample (in Fig.…”

Section: Resultsmentioning

confidence: 93%

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

Sriwong

Tejangkura

2015

MATEC Web of Conferences

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Abstract. The AC/TiO2/Rubber (ACTR) composite sheets weresuccessfully fabricated by a simply mixing of fixed TiO2 suspension and natural rubber latex (60% HA) contents withthe varyingamounts of activated carbon (AC) suspension, followed by stirring,pouring into apetri dish mold, drying at room temperature (RT),after that taking out from a mold, reversing and drying again at RT. Then, the as-fabricated ACTR composite sheets were characterized by X-ray diffractometer (XRD), attenuated total reflectionFourier transform infrared spectroscopy (ATR-FTIR), energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM)techniques.The photocatalytic efficiencies of allACTR composite sheet sampleswere evaluated by photodegrading of methylene blue (MB) dye solution under UV light irradiation.The results showed that the photocatalytic activity of ACTR sheet with10.0wt%AC loadinghas the highest efficiency for the photodegradation of MB dye than the other sheets. This is due to the fact that it is relatively with the synergistic effect of well-combined titanium dioxide catalyst and activated carbon adsorbent.

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Section: Resultsmentioning

confidence: 93%

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

Sriwong

Tejangkura

2015

MATEC Web of Conferences

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“…Figure 3(a) shows the XRD patterns of GO and rGO-TiO 2 composites. The peaks of the prepared rGO-TiO 2 are located at 2θ=25.4°, 38.1°, 48.3°, 54.2°, and 62.9°, which are characteristics of the anatase phase of TiO 2 corresponding to the (101), ( 004), ( 200), (105), and (204) crystal planes, respectively [31], indicating that the nanoparticles are TiO 2 . According to previous reports, the diffraction peak of pure graphite is at about 2θ=26° [32].…”

Section: Characterization Of Go and Rgo-tiomentioning

confidence: 98%

Degradation of tetracycline in water by gas–liquid plasma in conjunction with rGO-TiO₂ nanocomposite

Liu

Cheng

et al. 2021

Plasma Sci. Technol.

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Tetracycline (TC) is an antibiotic mainly used in livestock production and respiratory infection. Traditional methods are not effective in removing TC from solution. In this study, TC was degraded by gas-liquid plasma in the presence of rGO-TiO 2 in solution. The rGO-TiO 2 was prepared by modified hummers and hydrothermal method. The electrical and optical properties of the gas-liquid discharge plasma were studied and the produced long-lived reactive species were analyzed by spectrophotometer. The degradation efficiency of TC was improved by 41.4% after plasma treatment for 12 min in presence of 30 mg l −1 rGO-TiO 2 compared to that with plasma alone. The degradation efficiency increased with increasing discharge power, but as the initial concentration was increased from 20 to 80 mg l −1 , the degradation efficiency of TC decreased. The initial pH had no significant effect on the degradation of TC. The intermediate products were determined by UV-vis spectrophotometry and ESI (+)-MS, and the degradation mechanism was analyzed. The reactive species, including O 3 , •OH, and H 2 O 2 , etc., produced in the plasma/catalyst system attracted electron-rich functional groups (amino group, aromatic ring, and double bond). Therefore, the gas-liquid plasma/catalyst system could be an effective and promising method for pharmaceutical wastewater treatment in future.

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“…The solution was illuminated under UV light for 1 h. After that, the sample was washed with deionized water and dried. For a comparison, a TiO 2 film prepared by a sol-gel method was used as a reference [18]; the sample was denoted by R-TiO 2 .…”

Section: Preparation Of Tio 2 and Pt-tio 2 Nanosheet Porous Filmsmentioning

confidence: 99%

Photocatalytic Reduction of CO₂to Methane on Pt/TiO₂Nanosheet Porous Film

Zong

Chen

et al. 2014

Advances in Condensed Matter Physics

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Anatase TiO2nanosheet porous films were prepared by calcination of the orthorhombic titanic acid films at 400°C. They showed an excellent photocatalytic activity for CO2photoreduction to methane, which should be related to their special porous structure and large Brunauer-Emmett-Teller (BET) surface area. In order to further improve the photocatalytic activity, Pt nanoparticles were loaded uniformly with the average size of 3-4 nm on TiO2porous films by the photoreduction method. It was found that the loading of Pt expanded the light absorption ability of the porous film and improved the transformation efficiency of CO2to methane. The conversion yield of CO2to methane on Pt/TiO2film reached 20.51 ppm/h·cm2. The Pt/TiO2nanosheet porous film was characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and ultraviolet-visible light diffuse reflectance spectra (UV-vis DRS). Moreover, the transient photocurrent-time curves showed that the Pt/TiO2nanosheet porous film exhibited higher photocurrent, indicating that the higher separation efficiency of the photogenerated charge carriers was achieved.

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Twice heat-treating to synthesize TiO2/carbon composites with visible-light photocatalytic activity

Cited by 13 publications

References 22 publications

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

Degradation of tetracycline in water by gas–liquid plasma in conjunction with rGO-TiO₂ nanocomposite

Photocatalytic Reduction of CO₂to Methane on Pt/TiO₂Nanosheet Porous Film

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Twice heat-treating to synthesize TiO2/carbon composites with visible-light photocatalytic activity

Cited by 13 publications

References 22 publications

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

AC/TiO2/Rubber Composite Sheet Catalysts; Fabrication, Characterization and Photocatalytic Activities

Degradation of tetracycline in water by gas–liquid plasma in conjunction with rGO-TiO2 nanocomposite

Photocatalytic Reduction of CO2to Methane on Pt/TiO2Nanosheet Porous Film

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Degradation of tetracycline in water by gas–liquid plasma in conjunction with rGO-TiO₂ nanocomposite

Photocatalytic Reduction of CO₂to Methane on Pt/TiO₂Nanosheet Porous Film