Carbon-Modified TiO&lt;SUB&gt;2&lt;/SUB&gt; Visible Light Photocatalyst Prepared Using Phenolic Resin as Carbon Source

Chen, Lijing; Wang, Ting; Chen, Feng; Zhang, Jinlong

doi:10.3724/sp.j.1088.2011.01216

Cited by 2 publications

(6 citation statements)

References 24 publications

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“…36-1451) and the peaks of carbon dots can not be observed in XRD patterns of the composites, which demonstrated that the modified elements would not change the ZnO crystal lattice, and the little carbon dots in these composites can not be detected (less than 5%). Moreover, we can infer that C-ZnO NCs had a preferred orientation along the (101) crystal plane, and all products have a good crystallization …”

Section: Resultsmentioning

confidence: 96%

“…The absorption edges of Figure a–c were 404.7, 438.2, and 415 nm, and their band energy gaps were 3.06, 2.83, and 2.99 eV, respectively. The band gap energy of C-ZnO NCs (the molar ratio of glycine to zinc nitrate was 2:1) was 2.83 eV, which was narrowed to 0.13 eV compared to pure ZnO NCs . The enhanced light adsorption can raise the efficiency of the use of visible light, which can increase the production of electron–hole pairs under visible light irradiation, and then result in a higher photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, we can infer that C-ZnO NCs had a preferred orientation along the (101) crystal plane, and all products have a good crystallization. 22 3.2. Optical and Conductive Properties.…”

Section: Resultsmentioning

confidence: 99%

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Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Zhang

Liu

Wang

et al. 2015

Ind. Eng. Chem. Res.

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The carbon dot (C-ZnO NCs) modified zinc oxide with novel visible-light catalytic abilities was mass produced by combustion method. During the formation process, the generated gas of reagents under high temperature can effectively break the product into small particles. Meanwhile, a certain amount of carbon dots have been formed and loaded on the surface of ZnO NCs. The results suggest that the carbon dots have a huge impact on the photocatalytic performance. Specifically, when the molar ratio of glycine to zinc nitrate was 2:1, the product was a monodisperse particle with an average diameter of about 70–80 nm and BET specific surface area of 11.88 m2·g–1, which exhibited the best catalytic efficiency. The degradation process of Rh. B can be completed within 15 min, with an increase of 433.3% compared with pure ZnO materials (80 min). The present study is not only significant for improving large-scale production of modified ZnO NCs but also for suggesting practical application fields such as environmental catalysts.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

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Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Zhang

Liu

Wang

et al. 2015

Ind. Eng. Chem. Res.

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“…Among all kinds of modification methods, nonmetal doping has been regarded as one of most effective approaches to improve the visible‐light‐driven photocatalytic activity. Many groups have proved that carbon doping can greatly enhance the photocatalytic activity of metal oxide catalysts in the visible‐light region and broaden the absorption for solar spectrum . Many efforts have been taken on doping TiO 2 with carbon to achieve better band‐gap narrowing and visible‐light response.…”

Section: Introductionmentioning

confidence: 99%

“…Many groups have proved that carbon doping can greatly enhance the photocatalytic activity of metal oxide catalysts in the visible-light region and broaden the absorption for solar spectrum. [1][2][3][4][5] Many efforts have been taken on doping TiO 2 with carbon to achieve better band-gap narrowing and visible-light response. The estimated optical band gaps for the carbon-modified TiO 2 photocatalysts were 3.18, 4 3.02, 3.11, 6 2.76-2.78, and 1.45 eV, 7,8 respectively.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Graphene/Bi₂WO₆ Composite with High Adsorptivity and Photoactivity for Azo Dyes

Zhang

Huang

Xu³

et al. 2013

J. Am. Ceram. Soc.

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Graphene/Bi2WO6 composites have been synthesized by hydrothermal reduction at 160°C for 24 h using ethanol as the reducing agent. All as‐prepared composites were characterized using X‐ray diffraction (XRD), UV–vis diffuse reflectance spectroscopy, FT‐IR spectroscopy, Raman spectroscopy, scanning electron microscopy, high‐resolution transmission electron microscopy, N2 adsorption, and photocatalytic activity evaluation. The effective charge separation of graphene/Bi2WO6 composites was caused by the electrical conduction of graphene which is the most important factor. The results have proved the formation of interfacial contact between graphene nanosheets and Bi2WO6 nanoplates. The adsorptivity for azo dyes was enhanced greatly with the introduction of graphene. The oxy‐functional groups located at the edges of graphene were responsible for the enhanced adsorptivity. As‐prepared graphene/Bi2WO6 composites exhibited enhanced light absorption from UV to visible‐light region. In addition, the introduction of graphene would also result in smaller crystalline size and lower crystallinity of Bi2WO6. Graphene/Bi2WO6 composites containing an appropriate amount of graphene were proved to exhibit higher adsorptivities and photocatalytic activities for azo dyes. High photocatalytic activities of graphene/Bi2WO6 composites were considered to be the synergetic effects of high adsorption, high light absorption, and high electrical conduction induced by the introduction of graphene.

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Carbon-Modified TiO<SUB>2</SUB> Visible Light Photocatalyst Prepared Using Phenolic Resin as Carbon Source

Cited by 2 publications

References 24 publications

Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Hydrothermal Synthesis of Graphene/Bi₂WO₆ Composite with High Adsorptivity and Photoactivity for Azo Dyes

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Carbon-Modified TiO<SUB>2</SUB> Visible Light Photocatalyst Prepared Using Phenolic Resin as Carbon Source

Cited by 2 publications

References 24 publications

Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Mass Production, Enhanced Visible Light Photocatalytic Efficiency, and Application of Modified ZnO Nanocrystals by Carbon Dots

Hydrothermal Synthesis of Graphene/Bi2WO6 Composite with High Adsorptivity and Photoactivity for Azo Dyes

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Product

Resources

About

Hydrothermal Synthesis of Graphene/Bi₂WO₆ Composite with High Adsorptivity and Photoactivity for Azo Dyes